WO2019208643A1 - 5,5-ジ置換-4,5-ジヒドロイソオキサゾールの製造方法 - Google Patents
5,5-ジ置換-4,5-ジヒドロイソオキサゾールの製造方法 Download PDFInfo
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- WO2019208643A1 WO2019208643A1 PCT/JP2019/017459 JP2019017459W WO2019208643A1 WO 2019208643 A1 WO2019208643 A1 WO 2019208643A1 JP 2019017459 W JP2019017459 W JP 2019017459W WO 2019208643 A1 WO2019208643 A1 WO 2019208643A1
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- acid
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- hydroxylamine
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- compound
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- -1 5,5-di-substituted-4,5-dihydroisoxazole Chemical class 0.000 title description 40
- AVXURJPOCDRRFD-UHFFFAOYSA-N Hydroxylamine Chemical compound ON AVXURJPOCDRRFD-UHFFFAOYSA-N 0.000 claims abstract description 124
- 150000001875 compounds Chemical class 0.000 claims abstract description 116
- 238000006243 chemical reaction Methods 0.000 claims abstract description 105
- 239000003377 acid catalyst Substances 0.000 claims abstract description 60
- 238000000034 method Methods 0.000 claims description 135
- DTQVDTLACAAQTR-UHFFFAOYSA-N Trifluoroacetic acid Chemical compound OC(=O)C(F)(F)F DTQVDTLACAAQTR-UHFFFAOYSA-N 0.000 claims description 121
- 239000002253 acid Substances 0.000 claims description 98
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 87
- 239000003054 catalyst Substances 0.000 claims description 77
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 73
- 229910001868 water Inorganic materials 0.000 claims description 73
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical group [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 60
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 claims description 57
- 150000007513 acids Chemical class 0.000 claims description 49
- DIYSFZUJSGOINT-UHFFFAOYSA-N 5,5-dimethyl-4h-1,2-oxazole Chemical compound CC1(C)CC=NO1 DIYSFZUJSGOINT-UHFFFAOYSA-N 0.000 claims description 45
- 239000002904 solvent Substances 0.000 claims description 44
- WTDHULULXKLSOZ-UHFFFAOYSA-N Hydroxylamine hydrochloride Chemical compound Cl.ON WTDHULULXKLSOZ-UHFFFAOYSA-N 0.000 claims description 38
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims description 38
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 claims description 38
- 239000011976 maleic acid Substances 0.000 claims description 38
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 claims description 38
- AFBPFSWMIHJQDM-UHFFFAOYSA-N N-methylaniline Chemical compound CNC1=CC=CC=C1 AFBPFSWMIHJQDM-UHFFFAOYSA-N 0.000 claims description 34
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 claims description 33
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 28
- 229910017604 nitric acid Inorganic materials 0.000 claims description 28
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 27
- 230000003472 neutralizing effect Effects 0.000 claims description 22
- 239000000243 solution Substances 0.000 claims description 22
- SEPQTYODOKLVSB-UHFFFAOYSA-N 3-methylbut-2-enal Chemical compound CC(C)=CC=O SEPQTYODOKLVSB-UHFFFAOYSA-N 0.000 claims description 21
- 239000007864 aqueous solution Substances 0.000 claims description 21
- 239000003795 chemical substances by application Substances 0.000 claims description 21
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 20
- 150000001735 carboxylic acids Chemical class 0.000 claims description 20
- 235000011121 sodium hydroxide Nutrition 0.000 claims description 20
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 claims description 18
- 125000004432 carbon atom Chemical group C* 0.000 claims description 17
- OCJBOOLMMGQPQU-UHFFFAOYSA-N 1,4-dichlorobenzene Chemical compound ClC1=CC=C(Cl)C=C1 OCJBOOLMMGQPQU-UHFFFAOYSA-N 0.000 claims description 16
- ZNBNBTIDJSKEAM-UHFFFAOYSA-N 4-[7-hydroxy-2-[5-[5-[6-hydroxy-6-(hydroxymethyl)-3,5-dimethyloxan-2-yl]-3-methyloxolan-2-yl]-5-methyloxolan-2-yl]-2,8-dimethyl-1,10-dioxaspiro[4.5]decan-9-yl]-2-methyl-3-propanoyloxypentanoic acid Chemical compound C1C(O)C(C)C(C(C)C(OC(=O)CC)C(C)C(O)=O)OC11OC(C)(C2OC(C)(CC2)C2C(CC(O2)C2C(CC(C)C(O)(CO)O2)C)C)CC1 ZNBNBTIDJSKEAM-UHFFFAOYSA-N 0.000 claims description 16
- 229910000378 hydroxylammonium sulfate Inorganic materials 0.000 claims description 16
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 16
- 235000010755 mineral Nutrition 0.000 claims description 16
- 239000011707 mineral Substances 0.000 claims description 16
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 15
- 229940117389 dichlorobenzene Drugs 0.000 claims description 15
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 14
- 150000003460 sulfonic acids Chemical class 0.000 claims description 14
- 150000002443 hydroxylamines Chemical class 0.000 claims description 13
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 12
- RWRDLPDLKQPQOW-UHFFFAOYSA-N Pyrrolidine Chemical compound C1CCNC1 RWRDLPDLKQPQOW-UHFFFAOYSA-N 0.000 claims description 12
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 12
- 125000004169 (C1-C6) alkyl group Chemical group 0.000 claims description 10
- YNAVUWVOSKDBBP-UHFFFAOYSA-N Morpholine Chemical compound C1COCCN1 YNAVUWVOSKDBBP-UHFFFAOYSA-N 0.000 claims description 10
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 10
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 10
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 10
- 239000008096 xylene Substances 0.000 claims description 10
- 125000005913 (C3-C6) cycloalkyl group Chemical group 0.000 claims description 9
- 125000000882 C2-C6 alkenyl group Chemical group 0.000 claims description 9
- 125000004191 (C1-C6) alkoxy group Chemical group 0.000 claims description 8
- 125000003601 C2-C6 alkynyl group Chemical group 0.000 claims description 8
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 7
- 229910021529 ammonia Inorganic materials 0.000 claims description 6
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 6
- 239000003125 aqueous solvent Substances 0.000 claims description 5
- VEFXTGTZJOWDOF-UHFFFAOYSA-N benzene;hydrate Chemical compound O.C1=CC=CC=C1 VEFXTGTZJOWDOF-UHFFFAOYSA-N 0.000 claims description 5
- 229910052799 carbon Inorganic materials 0.000 claims description 5
- 229910000028 potassium bicarbonate Inorganic materials 0.000 claims description 5
- 239000011736 potassium bicarbonate Substances 0.000 claims description 5
- 235000015497 potassium bicarbonate Nutrition 0.000 claims description 5
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 5
- 235000011181 potassium carbonates Nutrition 0.000 claims description 5
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 claims description 5
- 235000011118 potassium hydroxide Nutrition 0.000 claims description 5
- 125000002837 carbocyclic group Chemical group 0.000 claims description 4
- 235000017550 sodium carbonate Nutrition 0.000 claims description 4
- 229940086066 potassium hydrogencarbonate Drugs 0.000 claims description 3
- WEQPBCSPRXFQQS-UHFFFAOYSA-N 4,5-dihydro-1,2-oxazole Chemical compound C1CC=NO1 WEQPBCSPRXFQQS-UHFFFAOYSA-N 0.000 abstract 1
- 239000002585 base Substances 0.000 description 69
- 238000004817 gas chromatography Methods 0.000 description 32
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 26
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 24
- 235000011007 phosphoric acid Nutrition 0.000 description 24
- 230000005484 gravity Effects 0.000 description 23
- 239000000203 mixture Substances 0.000 description 22
- 239000011541 reaction mixture Substances 0.000 description 22
- 239000010410 layer Substances 0.000 description 21
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 19
- AFVFQIVMOAPDHO-UHFFFAOYSA-N Methanesulfonic acid Chemical compound CS(O)(=O)=O AFVFQIVMOAPDHO-UHFFFAOYSA-N 0.000 description 18
- JXTHNDFMNIQAHM-UHFFFAOYSA-N dichloroacetic acid Chemical compound OC(=O)C(Cl)Cl JXTHNDFMNIQAHM-UHFFFAOYSA-N 0.000 description 18
- DKGAVHZHDRPRBM-UHFFFAOYSA-N Tert-Butanol Chemical compound CC(C)(C)O DKGAVHZHDRPRBM-UHFFFAOYSA-N 0.000 description 17
- 125000001424 substituent group Chemical group 0.000 description 17
- 230000032683 aging Effects 0.000 description 16
- YNJBWRMUSHSURL-UHFFFAOYSA-N trichloroacetic acid Chemical compound OC(=O)C(Cl)(Cl)Cl YNJBWRMUSHSURL-UHFFFAOYSA-N 0.000 description 15
- 125000005843 halogen group Chemical group 0.000 description 14
- 239000000047 product Substances 0.000 description 14
- 150000003839 salts Chemical class 0.000 description 14
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 13
- SRSXLGNVWSONIS-UHFFFAOYSA-N benzenesulfonic acid Chemical compound OS(=O)(=O)C1=CC=CC=C1 SRSXLGNVWSONIS-UHFFFAOYSA-N 0.000 description 13
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- 239000006227 byproduct Substances 0.000 description 13
- 125000000753 cycloalkyl group Chemical group 0.000 description 13
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 12
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 12
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 12
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 12
- 238000001816 cooling Methods 0.000 description 12
- 229920006395 saturated elastomer Polymers 0.000 description 12
- 125000004178 (C1-C4) alkyl group Chemical group 0.000 description 10
- 239000000543 intermediate Substances 0.000 description 10
- 150000003016 phosphoric acids Chemical class 0.000 description 10
- ITMCEJHCFYSIIV-UHFFFAOYSA-N triflic acid Chemical compound OS(=O)(=O)C(F)(F)F ITMCEJHCFYSIIV-UHFFFAOYSA-N 0.000 description 10
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 9
- 150000008064 anhydrides Chemical class 0.000 description 9
- 229960005215 dichloroacetic acid Drugs 0.000 description 9
- 229940098779 methanesulfonic acid Drugs 0.000 description 9
- 238000002360 preparation method Methods 0.000 description 9
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 8
- ASMQGLCHMVWBQR-UHFFFAOYSA-M diphenyl phosphate Chemical compound C=1C=CC=CC=1OP(=O)([O-])OC1=CC=CC=C1 ASMQGLCHMVWBQR-UHFFFAOYSA-M 0.000 description 8
- 229940098895 maleic acid Drugs 0.000 description 8
- 229940044600 maleic anhydride Drugs 0.000 description 8
- 239000012044 organic layer Substances 0.000 description 8
- 239000002994 raw material Substances 0.000 description 8
- 230000001629 suppression Effects 0.000 description 8
- 229960004319 trichloroacetic acid Drugs 0.000 description 8
- 125000004765 (C1-C4) haloalkyl group Chemical group 0.000 description 7
- MIOPJNTWMNEORI-GMSGAONNSA-N (S)-camphorsulfonic acid Chemical compound C1C[C@@]2(CS(O)(=O)=O)C(=O)C[C@@H]1C2(C)C MIOPJNTWMNEORI-GMSGAONNSA-N 0.000 description 7
- 125000000217 alkyl group Chemical group 0.000 description 7
- 125000003118 aryl group Chemical group 0.000 description 7
- 238000009835 boiling Methods 0.000 description 7
- 239000003960 organic solvent Substances 0.000 description 7
- 235000002597 Solanum melongena Nutrition 0.000 description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 6
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 6
- 239000012230 colorless oil Substances 0.000 description 6
- 239000012043 crude product Substances 0.000 description 6
- 239000000539 dimer Substances 0.000 description 6
- 238000004821 distillation Methods 0.000 description 6
- 150000002825 nitriles Chemical class 0.000 description 6
- KJIFKLIQANRMOU-UHFFFAOYSA-N oxidanium;4-methylbenzenesulfonate Chemical compound O.CC1=CC=C(S(O)(=O)=O)C=C1 KJIFKLIQANRMOU-UHFFFAOYSA-N 0.000 description 6
- 238000003756 stirring Methods 0.000 description 6
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 6
- 125000000171 (C1-C6) haloalkyl group Chemical group 0.000 description 5
- 229910019142 PO4 Inorganic materials 0.000 description 5
- 150000001299 aldehydes Chemical class 0.000 description 5
- 125000001931 aliphatic group Chemical group 0.000 description 5
- 150000001412 amines Chemical class 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 5
- 150000001492 aromatic hydrocarbon derivatives Chemical class 0.000 description 5
- 125000004122 cyclic group Chemical group 0.000 description 5
- 230000002363 herbicidal effect Effects 0.000 description 5
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- 239000010452 phosphate Substances 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- CAAMSDWKXXPUJR-UHFFFAOYSA-N 3,5-dihydro-4H-imidazol-4-one Chemical class O=C1CNC=N1 CAAMSDWKXXPUJR-UHFFFAOYSA-N 0.000 description 4
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 4
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 4
- JGFZNNIVVJXRND-UHFFFAOYSA-N N,N-Diisopropylethylamine (DIPEA) Chemical compound CCN(C(C)C)C(C)C JGFZNNIVVJXRND-UHFFFAOYSA-N 0.000 description 4
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 4
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 4
- PXAJQJMDEXJWFB-UHFFFAOYSA-N acetone oxime Chemical compound CC(C)=NO PXAJQJMDEXJWFB-UHFFFAOYSA-N 0.000 description 4
- 150000001298 alcohols Chemical class 0.000 description 4
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 4
- 239000003729 cation exchange resin Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- UCQFCFPECQILOL-UHFFFAOYSA-N diethyl hydrogen phosphate Chemical compound CCOP(O)(=O)OCC UCQFCFPECQILOL-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- ZJXZSIYSNXKHEA-UHFFFAOYSA-N ethyl dihydrogen phosphate Chemical compound CCOP(O)(O)=O ZJXZSIYSNXKHEA-UHFFFAOYSA-N 0.000 description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 4
- 150000002923 oximes Chemical class 0.000 description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 4
- 150000003335 secondary amines Chemical class 0.000 description 4
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 125000000229 (C1-C4)alkoxy group Chemical group 0.000 description 3
- 125000006650 (C2-C4) alkynyl group Chemical group 0.000 description 3
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 3
- SGUVLZREKBPKCE-UHFFFAOYSA-N 1,5-diazabicyclo[4.3.0]-non-5-ene Chemical compound C1CCN=C2CCCN21 SGUVLZREKBPKCE-UHFFFAOYSA-N 0.000 description 3
- 238000001644 13C nuclear magnetic resonance spectroscopy Methods 0.000 description 3
- 238000005160 1H NMR spectroscopy Methods 0.000 description 3
- OISVCGZHLKNMSJ-UHFFFAOYSA-N 2,6-dimethylpyridine Chemical compound CC1=CC=CC(C)=N1 OISVCGZHLKNMSJ-UHFFFAOYSA-N 0.000 description 3
- CASLETQIYIQFTQ-UHFFFAOYSA-N 3-[[5-(difluoromethoxy)-1-methyl-3-(trifluoromethyl)pyrazol-4-yl]methylsulfonyl]-5,5-dimethyl-4h-1,2-oxazole Chemical compound CN1N=C(C(F)(F)F)C(CS(=O)(=O)C=2CC(C)(C)ON=2)=C1OC(F)F CASLETQIYIQFTQ-UHFFFAOYSA-N 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
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- 125000000304 alkynyl group Chemical group 0.000 description 3
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- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 150000001991 dicarboxylic acids Chemical class 0.000 description 3
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- 239000007789 gas Substances 0.000 description 3
- 238000002290 gas chromatography-mass spectrometry Methods 0.000 description 3
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 3
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 3
- CMPQUABWPXYYSH-UHFFFAOYSA-N phenyl phosphate Chemical compound OP(O)(=O)OC1=CC=CC=C1 CMPQUABWPXYYSH-UHFFFAOYSA-N 0.000 description 3
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 3
- 239000002356 single layer Substances 0.000 description 3
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- 150000003628 tricarboxylic acids Chemical class 0.000 description 3
- WSLDOOZREJYCGB-UHFFFAOYSA-N 1,2-Dichloroethane Chemical compound ClCCCl WSLDOOZREJYCGB-UHFFFAOYSA-N 0.000 description 2
- RFFLAFLAYFXFSW-UHFFFAOYSA-N 1,2-dichlorobenzene Chemical compound ClC1=CC=CC=C1Cl RFFLAFLAYFXFSW-UHFFFAOYSA-N 0.000 description 2
- HOBQUXNQVJZYSD-UHFFFAOYSA-N 3,3-bis(4-methoxyphenyl)prop-2-enal Chemical compound C1=CC(OC)=CC=C1C(=CC=O)C1=CC=C(OC)C=C1 HOBQUXNQVJZYSD-UHFFFAOYSA-N 0.000 description 2
- VHYFNPMBLIVWCW-UHFFFAOYSA-N 4-Dimethylaminopyridine Chemical compound CN(C)C1=CC=NC=C1 VHYFNPMBLIVWCW-UHFFFAOYSA-N 0.000 description 2
- RGUKYNXWOWSRET-UHFFFAOYSA-N 4-pyrrolidin-1-ylpyridine Chemical compound C1CCCN1C1=CC=NC=C1 RGUKYNXWOWSRET-UHFFFAOYSA-N 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 2
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 2
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- 125000004399 C1-C4 alkenyl group Chemical group 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
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- 229910001860 alkaline earth metal hydroxide Inorganic materials 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 description 1
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 1
- JHIWVOJDXOSYLW-UHFFFAOYSA-N butyl 2,2-difluorocyclopropane-1-carboxylate Chemical compound CCCCOC(=O)C1CC1(F)F JHIWVOJDXOSYLW-UHFFFAOYSA-N 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 229960000846 camphor Drugs 0.000 description 1
- 235000013877 carbamide Nutrition 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 150000001728 carbonyl compounds Chemical class 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 150000001733 carboxylic acid esters Chemical class 0.000 description 1
- 229940023913 cation exchange resins Drugs 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 125000001309 chloro group Chemical group Cl* 0.000 description 1
- 125000004775 chlorodifluoromethyl group Chemical group FC(F)(Cl)* 0.000 description 1
- 125000004093 cyano group Chemical group *C#N 0.000 description 1
- YKNMBTZOEVIJCM-UHFFFAOYSA-N dec-2-ene Chemical compound CCCCCCCC=CC YKNMBTZOEVIJCM-UHFFFAOYSA-N 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- AQEFLFZSWDEAIP-UHFFFAOYSA-N di-tert-butyl ether Chemical compound CC(C)(C)OC(C)(C)C AQEFLFZSWDEAIP-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 1
- KJOZJSGOIJQCGA-UHFFFAOYSA-N dichloromethane;2,2,2-trifluoroacetic acid Chemical compound ClCCl.OC(=O)C(F)(F)F KJOZJSGOIJQCGA-UHFFFAOYSA-N 0.000 description 1
- HPNMFZURTQLUMO-UHFFFAOYSA-N diethylamine Chemical compound CCNCC HPNMFZURTQLUMO-UHFFFAOYSA-N 0.000 description 1
- GGSUCNLOZRCGPQ-UHFFFAOYSA-N diethylaniline Chemical compound CCN(CC)C1=CC=CC=C1 GGSUCNLOZRCGPQ-UHFFFAOYSA-N 0.000 description 1
- 125000001028 difluoromethyl group Chemical group [H]C(F)(F)* 0.000 description 1
- SBZXBUIDTXKZTM-UHFFFAOYSA-N diglyme Chemical compound COCCOCCOC SBZXBUIDTXKZTM-UHFFFAOYSA-N 0.000 description 1
- 229940043279 diisopropylamine Drugs 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- WEHWNAOGRSTTBQ-UHFFFAOYSA-N dipropylamine Chemical compound CCCNCCC WEHWNAOGRSTTBQ-UHFFFAOYSA-N 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 125000001153 fluoro group Chemical group F* 0.000 description 1
- 125000004216 fluoromethyl group Chemical group [H]C([H])(F)* 0.000 description 1
- 125000001188 haloalkyl group Chemical group 0.000 description 1
- 125000006343 heptafluoro propyl group Chemical group 0.000 description 1
- 125000000623 heterocyclic group Chemical group 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- NILJXUMQIIUAFY-UHFFFAOYSA-N hydroxylamine;nitric acid Chemical compound ON.O[N+]([O-])=O NILJXUMQIIUAFY-UHFFFAOYSA-N 0.000 description 1
- LVWBCSKGNSTMNO-UHFFFAOYSA-N hydroxylamine;oxalic acid Chemical compound ON.OC(=O)C(O)=O LVWBCSKGNSTMNO-UHFFFAOYSA-N 0.000 description 1
- HYYHQASRTSDPOD-UHFFFAOYSA-N hydroxylamine;phosphoric acid Chemical compound ON.OP(O)(O)=O HYYHQASRTSDPOD-UHFFFAOYSA-N 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 125000001972 isopentyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000000555 isopropenyl group Chemical group [H]\C([H])=C(\*)C([H])([H])[H] 0.000 description 1
- 150000002545 isoxazoles Chemical class 0.000 description 1
- XIXADJRWDQXREU-UHFFFAOYSA-M lithium acetate Chemical compound [Li+].CC([O-])=O XIXADJRWDQXREU-UHFFFAOYSA-M 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- IZDROVVXIHRYMH-UHFFFAOYSA-N methanesulfonic anhydride Chemical compound CS(=O)(=O)OS(C)(=O)=O IZDROVVXIHRYMH-UHFFFAOYSA-N 0.000 description 1
- 125000004170 methylsulfonyl group Chemical group [H]C([H])([H])S(*)(=O)=O 0.000 description 1
- 235000019837 monoammonium phosphate Nutrition 0.000 description 1
- 229910052901 montmorillonite Inorganic materials 0.000 description 1
- 229910052680 mordenite Inorganic materials 0.000 description 1
- 125000000740 n-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000001971 neopentyl group Chemical group [H]C([*])([H])C(C([H])([H])[H])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 1
- 125000004433 nitrogen atom Chemical group N* 0.000 description 1
- KPADFPAILITQBG-UHFFFAOYSA-N non-4-ene Chemical compound CCCCC=CCCC KPADFPAILITQBG-UHFFFAOYSA-N 0.000 description 1
- 229940078552 o-xylene Drugs 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000006146 oximation reaction Methods 0.000 description 1
- 125000005646 oximino group Chemical group 0.000 description 1
- 125000006340 pentafluoro ethyl group Chemical group FC(F)(F)C(F)(F)* 0.000 description 1
- 125000000951 phenoxy group Chemical group [H]C1=C([H])C([H])=C(O*)C([H])=C1[H] 0.000 description 1
- DHRLEVQXOMLTIM-UHFFFAOYSA-N phosphoric acid;trioxomolybdenum Chemical compound O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.OP(O)(O)=O DHRLEVQXOMLTIM-UHFFFAOYSA-N 0.000 description 1
- IYDGMDWEHDFVQI-UHFFFAOYSA-N phosphoric acid;trioxotungsten Chemical compound O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.OP(O)(O)=O IYDGMDWEHDFVQI-UHFFFAOYSA-N 0.000 description 1
- 229920001467 poly(styrenesulfonates) Polymers 0.000 description 1
- 125000003367 polycyclic group Chemical group 0.000 description 1
- 229920000137 polyphosphoric acid Polymers 0.000 description 1
- 235000011056 potassium acetate Nutrition 0.000 description 1
- 229940005657 pyrophosphoric acid Drugs 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 239000012925 reference material Substances 0.000 description 1
- 238000007363 ring formation reaction Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- CGFYHILWFSGVJS-UHFFFAOYSA-N silicic acid;trioxotungsten Chemical compound O[Si](O)(O)O.O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1.O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1.O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1.O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1 CGFYHILWFSGVJS-UHFFFAOYSA-N 0.000 description 1
- 239000001632 sodium acetate Substances 0.000 description 1
- 235000017281 sodium acetate Nutrition 0.000 description 1
- 239000001488 sodium phosphate Substances 0.000 description 1
- 229910000162 sodium phosphate Inorganic materials 0.000 description 1
- BVIUXFXFAYXPLC-UHFFFAOYSA-N spiro[4H-1,2-oxazole-5,9'-fluorene] Chemical compound O1N=CCC11C2=CC=CC=C2C=2C=CC=CC=21 BVIUXFXFAYXPLC-UHFFFAOYSA-N 0.000 description 1
- 125000003107 substituted aryl group Chemical group 0.000 description 1
- 238000000967 suction filtration Methods 0.000 description 1
- HXJUTPCZVOIRIF-UHFFFAOYSA-N sulfolane Chemical compound O=S1(=O)CCCC1 HXJUTPCZVOIRIF-UHFFFAOYSA-N 0.000 description 1
- 150000003457 sulfones Chemical class 0.000 description 1
- 150000003462 sulfoxides Chemical class 0.000 description 1
- DLYUQMMRRRQYAE-UHFFFAOYSA-N tetraphosphorus decaoxide Chemical compound O1P(O2)(=O)OP3(=O)OP1(=O)OP2(=O)O3 DLYUQMMRRRQYAE-UHFFFAOYSA-N 0.000 description 1
- 125000002088 tosyl group Chemical group [H]C1=C([H])C(=C([H])C([H])=C1C([H])([H])[H])S(*)(=O)=O 0.000 description 1
- IMNIMPAHZVJRPE-UHFFFAOYSA-N triethylenediamine Chemical compound C1CN2CCN1CC2 IMNIMPAHZVJRPE-UHFFFAOYSA-N 0.000 description 1
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 description 1
- 125000001889 triflyl group Chemical group FC(F)(F)S(*)(=O)=O 0.000 description 1
- YFNKIDBQEZZDLK-UHFFFAOYSA-N triglyme Chemical compound COCCOCCOCCOC YFNKIDBQEZZDLK-UHFFFAOYSA-N 0.000 description 1
- 239000013638 trimer Substances 0.000 description 1
- YFTHZRPMJXBUME-UHFFFAOYSA-N tripropylamine Chemical compound CCCN(CCC)CCC YFTHZRPMJXBUME-UHFFFAOYSA-N 0.000 description 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D261/00—Heterocyclic compounds containing 1,2-oxazole or hydrogenated 1,2-oxazole rings
- C07D261/02—Heterocyclic compounds containing 1,2-oxazole or hydrogenated 1,2-oxazole rings not condensed with other rings
- C07D261/04—Heterocyclic compounds containing 1,2-oxazole or hydrogenated 1,2-oxazole rings not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/02—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
- B01J31/0231—Halogen-containing compounds
- B01J31/0232—Halogen-containing compounds also containing elements or functional groups covered by B01J31/0201 - B01J31/0228
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/02—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
- B01J31/0234—Nitrogen-, phosphorus-, arsenic- or antimony-containing compounds
- B01J31/0235—Nitrogen containing compounds
- B01J31/0237—Amines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2231/00—Catalytic reactions performed with catalysts classified in B01J31/00
- B01J2231/30—Addition reactions at carbon centres, i.e. to either C-C or C-X multiple bonds
- B01J2231/34—Other additions, e.g. Monsanto-type carbonylations, addition to 1,2-C=X or 1,2-C-X triplebonds, additions to 1,4-C=C-C=X or 1,4-C=-C-X triple bonds with X, e.g. O, S, NH/N
- B01J2231/348—1,4-additions, e.g. conjugate additions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2531/00—Additional information regarding catalytic systems classified in B01J31/00
- B01J2531/001—General concepts, e.g. reviews, relating to catalyst systems and methods of making them, the concept being defined by a common material or method/theory
- B01J2531/002—Materials
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07B—GENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR
- C07B61/00—Other general methods
Definitions
- the present invention has the formula (3):
- Patent Document 1 discloses a useful herbicide. Among them, pyroxasulfone is well known as a herbicide having excellent herbicidal activity. Furthermore, JP 2013-512202 (Patent Document 2) shows that 5,5-disubstituted-4,5-dihydroisoxazole of the formula (3) is an important intermediate of the herbicide described in Patent Document 1. Disclose.
- Patent Document 2 JP 2013-512202 discloses a method for producing 5,5-disubstituted-4,5-dihydroisoxazole.
- the oxime of the formula (II) is converted to the carbonyl compound of the formula (III) ( ⁇ -disubstituted- ⁇ , ⁇ - Unsaturated aldehyde) to give 5,5-disubstituted-4,5-dihydroisoxazole of formula (I).
- the present inventor has diligently studied a method for producing the compound of formula (3). As a result, it was surprisingly found that the above problem can be solved by providing the following production method of the compound of formula (3). The present inventor has completed the present invention based on this finding.
- the present invention is as follows.
- R 1 and R 2 are each independently an optionally substituted (C1-C6) alkyl; an optionally substituted (C3-C6) cycloalkyl; Optionally (C2-C6) alkenyl; optionally substituted (C2-C6) alkynyl; optionally substituted (C1-C6) alkoxy; or optionally substituted phenyl; or R 1 and R 2 , together with the carbon atom to which they are attached, forms a 4 to 12 membered carbocyclic ring, where the ring formed here may be substituted.
- 1 and R 2 are as defined above).
- the acid catalyst is one or more selected from the group consisting of mineral acids, carboxylic acids, sulfonic acids, and phosphoric acids (preferably 1 to 3, more preferably 1 or 2, more preferably 1). ), The method according to [I-20].
- the acid catalyst is one or more (preferably 1 to 3, more preferably 1 or 2 and even more preferably 1) acids selected from the group consisting of mineral acids, carboxylic acids and sulfonic acids. The method according to [I-20].
- Acid catalyst is nitric acid, trifluoroacetic acid, trichloroacetic acid, dichloroacetic acid, maleic acid, maleic anhydride, methanesulfonic acid, trifluoromethanesulfonic acid, benzenesulfonic acid, p-toluenesulfonic acid, 10-camphor
- One or more (preferably 1 to 3) acid catalysts are selected from the group consisting of nitric acid, trifluoroacetic acid, trichloroacetic acid, maleic acid, maleic anhydride, benzenesulfonic acid and p-toluenesulfonic acid.
- the method according to [I-20] which is more preferably 1 or 2 acids, and still more preferably 1 acid.
- the acid catalyst is one or more selected from the group consisting of nitric acid, trifluoroacetic acid, maleic acid and p-toluenesulfonic acid (preferably 1 to 3, more preferably 1 or 2, more preferably Is an acid), the method according to [I-20].
- the acid catalyst is 1 to 3, preferably 1 or 2, more preferably 1 acid selected from the group consisting of trifluoroacetic acid, maleic acid and maleic anhydride. I-20].
- the amount of the acid catalyst used is 0.01 to 0.30 mol per mol of the compound of formula (1), and any one of [I-20] to [I-28] The method according to item.
- the acid of the acid-base catalyst is at least one selected from the group consisting of mineral acids, carboxylic acids, sulfonic acids, and phosphoric acids (preferably 1 to 3, more preferably 1 or 2, more preferably Is a single acid). The method according to [I-32].
- the acid of the acid-base catalyst is one or more selected from the group consisting of mineral acids, carboxylic acids and sulfonic acids (preferably 1 to 3, more preferably 1 or 2, more preferably 1). ), The method according to [I-32].
- Acid-base catalyst acid is nitric acid, trifluoroacetic acid, trichloroacetic acid, dichloroacetic acid, maleic acid, maleic anhydride, methanesulfonic acid, trifluoromethanesulfonic acid, benzenesulfonic acid, p-toluenesulfonic acid, 1- or more (preferably 1 to 3, more preferably 1 or 2, more preferably 1) acid selected from the group consisting of 10-camphorsulfonic acid and diphenyl phosphate [I-32] The method described in 1.
- the acid of the acid-base catalyst is one or more selected from the group consisting of nitric acid, trifluoroacetic acid, trichloroacetic acid, maleic acid, maleic anhydride, benzenesulfonic acid and p-toluenesulfonic acid (preferably 1
- the method according to [I-32], wherein the acid is ⁇ 3, more preferably 1 or 2, more preferably 1.
- the acid-base catalyst acid is one or more selected from the group consisting of nitric acid, trifluoroacetic acid, maleic acid and p-toluenesulfonic acid (preferably 1 to 3, more preferably 1 or 2)
- the method according to [I-32], more preferably 1 acid is one or more selected from the group consisting of nitric acid, trifluoroacetic acid, maleic acid and p-toluenesulfonic acid (preferably 1 to 3, more preferably 1 or 2)
- the method according to [I-32] more preferably 1 acid.
- the acid of the acid-base catalyst is 1 to 3, preferably 1 or 2, more preferably 1 selected from the group consisting of trifluoroacetic acid, maleic acid and maleic anhydride.
- the amount of acid used in the acid-base catalyst is 0.005 to 0.10 mol per mol of the compound of formula (1), from [I-32] to [I-40] The method according to any one of the above.
- the base of the acid-base catalyst is one or more (preferably 1 to 3, more preferably 1 or 2, more preferably 1) secondary amines, [I-32] To [I-41].
- the base of the acid-base catalyst is one or more selected from the group consisting of N-methylaniline, morpholine and pyrrolidine (preferably 1 to 3, more preferably 1 or 2, more preferably 1). ), The method according to any one of [I-32] to [I-41].
- the amount of the base of the acid-base catalyst used is 0.005 to 0.10 mol with respect to 1 mol of the compound of formula (1), from [I-32] to [I-44] The method according to any one of the above.
- the neutralizing agent is sodium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate, sodium bicarbonate, potassium bicarbonate or ammonia, according to [I-53] or [I-54] Method.
- reaction is carried out in the presence of one or more (preferably 1 or 2, more preferably 1) solvent selected from acetonitrile, toluene, xylene, chlorobenzene, dichlorobenzene and dichloromethane, and an aqueous solvent.
- solvent selected from acetonitrile, toluene, xylene, chlorobenzene, dichlorobenzene and dichloromethane, and an aqueous solvent.
- reaction is carried out in the presence of one or more (preferably 1 or 2, more preferably 1) solvent selected from toluene, xylene, chlorobenzene, dichlorobenzene and dichloromethane, and an aqueous solvent.
- solvent selected from toluene, xylene, chlorobenzene, dichlorobenzene and dichloromethane, and an aqueous solvent.
- R 1 and R 2 are each independently (C1-C6) alkyl; (C1-C6) haloalkyl; (C3-C6) cycloalkyl; (C2-C6) alkenyl; (C2-C6) ) Alkynyl; (C1-C6) alkoxy; or phenyl optionally substituted by 1 to 5 substituents independently selected from halogen atoms, (C1-C4) alkyl and (C1-C4) haloalkyl Or R 1 and R 2 together with the carbon atom to which they are attached form a 4-6 membered carbocycle, any of [I-1] to [I-64] 2.
- R 1 and R 2 are each independently (C1-C4) alkyl; (C1-C4) haloalkyl; (C3-C6) cycloalkyl; (C2-C4) alkenyl; (C2-C4 ) Alkynyl; (C1-C4) alkoxy; or phenyl optionally substituted by 1 to 5 substituents independently selected from halogen atoms, (C1-C4) alkyl and (C1-C4) haloalkyl Yes; or R 1 and R 2 together with the carbon atom to which they are attached form a 4-6 membered carbocycle, any one of [I-1] to [I-64] The method according to item.
- R 1 and R 2 are each independently (C1-C4) alkyl or (C1-C4) haloalkyl. The method described.
- the present invention is as follows.
- R 1 and R 2 are each independently an optionally substituted (C1-C6) alkyl; an optionally substituted (C3-C6) cycloalkyl; Optionally (C2-C6) alkenyl; optionally substituted (C2-C6) alkynyl; optionally substituted (C1-C6) alkoxy; or optionally substituted phenyl; or R 1 and R 2 , together with the carbon atom to which they are attached, forms a 4 to 12 membered carbocyclic ring, where the ring formed here may be substituted.
- 1 and R 2 are as defined above).
- [II-6] One or more (preferably 1 to 3, more preferably 1 or 2 and even more preferably 1) acids selected from the group consisting of mineral acids, carboxylic acids and sulfonic acids. The method according to [II-5].
- the acid catalyst is one or more selected from the group consisting of nitric acid, trifluoroacetic acid, maleic acid and p-toluenesulfonic acid (preferably 1 to 3, more preferably 1 or 2, more preferably Is a single acid) according to [II-5].
- the acid of the acid-base catalyst is at least one selected from the group consisting of mineral acids, carboxylic acids and sulfonic acids (preferably 1 to 3, more preferably 1 or 2, more preferably 1). ), The method according to [II-9].
- the acid of the acid-base catalyst is one or more selected from the group consisting of nitric acid, trifluoroacetic acid, maleic acid and p-toluenesulfonic acid (preferably 1 to 3, more preferably 1 or 2)
- the base of the acid-base catalyst is one or more selected from the group consisting of N-methylaniline, morpholine and pyrrolidine (preferably 1 to 3, more preferably 1 or 2, more preferably 1). ), The method according to any one of [II-9] to [II-12].
- the hydroxylamine is hydroxylamine hydrochloride or hydroxylamine sulfate, and the reaction is further performed in the presence of a neutralizing agent, according to any one of [II-1] to [II-14] the method of.
- the neutralizing agent is sodium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate, sodium hydrogen carbonate, potassium hydrogen carbonate or ammonia, according to [II-17] or [II-18] Method.
- reaction is carried out in the presence of one or more (preferably 1 or 2, more preferably 1) solvent selected from acetonitrile, toluene, xylene, chlorobenzene, dichlorobenzene and dichloromethane, and an aqueous solvent.
- solvent selected from acetonitrile, toluene, xylene, chlorobenzene, dichlorobenzene and dichloromethane, and an aqueous solvent.
- the present invention provides a novel method for producing a compound of formula (3). According to this invention, the manufacturing method of the compound of Formula (3) more preferable industrially is provided. Moreover, according to this invention, the compound of Formula (3) can be manufactured by simple operation and efficiently.
- Non-Patent Document 2 Special Table 2013-512202 (Patent Document 2) and Synlett 2008, No. 6, 827-830 (Non-Patent Document 1) and Chem. Eur. J. 2010, Vol. 16, 11325-11339 (Non-Patent Document 2)
- a ketone oxime that produces a ketone such as acetone or diethyl ketone as a by-product is used as a raw material.
- ketone oximes are unnecessary. Therefore, the method of the present invention does not produce ketones as by-products and / or waste.
- the raw material having the minimum structure necessary for introducing the oximino moiety (—O—N ⁇ ) of the target compound was hydroxylamine (HO—NH 2 ).
- the present inventor succeeded in producing the target compound without using ketone oxime.
- the method for producing the compound of formula (3) using the hydroxylamine of the present invention suppresses the generation of by-products and / or waste and improves the atomic efficiency. Therefore, the production method of the present invention is industrially preferable, economical, and environmentally friendly.
- the compound of formula (3) is produced in the presence of water.
- a highly safe 50% aqueous hydroxylamine solution can be used instead of highly explosive and dangerous anhydrous hydroxylamine.
- the compound of formula (3) is produced under non-aqueous conditions.
- the reaction intermediate of the process, oxime is expected to hydrolyze back to aldehyde and hydroxylamine in the presence of water.
- the acid as a catalyst is diluted and inactivated, so the reaction is expected to hardly proceed.
- the target compound can be produced efficiently by a simple operation. Furthermore, by the present invention, the production of by-products and / or waste can be suppressed, and the atomic efficiency can be improved. As a result, the present invention provides a method by which an intermediate for producing herbicides such as pyroxasulfone can be produced easily and inexpensively on an industrial scale. Therefore, the method of the present invention is industrially favorable, economical, environmentally friendly and has high industrial utility value.
- halogen atoms include fluorine atom, chlorine atom, bromine atom and iodine atom.
- (Ca—Cb) means that the number of carbon atoms is a to b.
- “(C1-C4)” in “(C1-C4) alkyl” means that the alkyl has 1 to 4 carbon atoms.
- alkyl are understood to include both straight and branched chains such as butyl and tert-butyl.
- specific terms such as “butyl” are used, this is specific for “normal butyl”, ie “n-butyl”.
- the specific term “butyl” means linear “normal butyl”.
- branched isomers such as “tert-butyl” are specifically mentioned when intended.
- Me means methyl.
- Et means ethyl.
- Pr means ethyl.
- Pr means propyl (ie, normal propyl).
- I-Pr” and “Pr-i” mean isopropyl.
- Bu means butyl (ie, normal butyl).
- S-Bu and “Bu-s” mean sec-butyl.
- I-Bu and “Bu-i” mean isobutyl.
- T-Bu and “Bu-t” mean tert-butyl.
- Pen pentyl (ie, normal pentyl).
- Hex n-Hex and Hex-n
- decyl ie, normal decyl
- C-Pr and “Pr-c” mean cyclopropyl.
- C-Bu and “Bu-c” mean cyclobutyl.
- C-Pen and “Pen-c” mean cyclopentyl.
- C-Hex and “Hex-c” mean cyclohexyl.
- Ph means phenyl.
- Bn means benzyl.
- Ms means methylsulfonyl (CH 3 SO 2 —).
- Ts means tosyl (4-CH 3 —C 6 H 4 SO 2 —).
- Tf means trifluoromethylsulfonyl (CF 3 SO 2 —).
- Ac means acetyl (CH 3 CO—).
- (C1-C6) alkyl means straight-chain or branched alkyl having 1 to 6 carbon atoms.
- Examples of (C1-C6) alkyl include, but are not limited to, methyl, ethyl, propyl, isopropyl, butyl, sec-butyl, isobutyl, tert-butyl, pentyl, isopentyl, neopentyl, hexyl and the like.
- (C1-C4) alkyl means a straight or branched alkyl having 1 to 4 carbon atoms.
- Examples of (C1-C4) alkyl are suitable examples of the above (C1-C6) alkyl examples.
- (C1-C6) haloalkyl means a linear or branched alkyl having 1 to 6 carbon atoms, which is substituted with 1 to 13 halogen atoms which are the same or different (where halogen atoms are Has the same meaning as defined above).
- Examples of (C1-C6) haloalkyl are fluoromethyl, difluoromethyl, trifluoromethyl, chlorodifluoromethyl, 2-fluoroethyl, 2-chloroethyl, 2,2,2-trifluoroethyl, pentafluoroethyl, 3-fluoro Propyl, 3-chloropropyl, 2,2,3,3,3-pentafluoropropyl, 2,2,2-trifluoro-1-trifluoromethylethyl, heptafluoropropyl, 1,2,2,2-tetra Fluoro-1-trifluoromethylethyl, 4-fluorobutyl, 4-chlorobutyl, 4-bromobutyl, 2,2,3,3,4,4,4-heptafluorobutyl, 5-fluoropentyl, 6-fluorohexyl However, it is not limited to these.
- (C1-C4) haloalkyl means a linear or branched alkyl having 1 to 4 carbon atoms, which is substituted with 1 to 9 halogen atoms which are the same or different (wherein the halogen atom is the above) Has the same meaning as the definition of Examples of (C1-C4) haloalkyl include, but are not limited to, suitable examples of the above (C1-C6) haloalkyl examples.
- (C3-C6) cycloalkyl means cycloalkyl having 3 to 6 carbon atoms.
- Examples of (C3-C6) cycloalkyl are cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl.
- (C2-C6) alkenyl means straight or branched alkenyl having 2 to 6 carbon atoms.
- Examples of (C2-C6) alkenyl are vinyl, 1-propenyl, isopropenyl, 2-propenyl, 1-butenyl, 1-methyl-1-propenyl, 2-methyl-1-propenyl, 2-butenyl, 1,3 -Including but not limited to butadienyl, 1-pentenyl, 1-hexenyl and the like.
- (C2-C4) alkenyl means straight or branched alkenyl having 2 to 4 carbon atoms.
- Examples of C2-C6 alkenyl include, but are not limited to, suitable examples of the above (C2-C6) alkenyl examples.
- (C2-C6) alkynyl means a straight-chain or branched alkynyl having 2 to 6 carbon atoms.
- Examples of (C2-C6) alkynyl include ethynyl, 1-propynyl, 2-propynyl, 1-butynyl, 1-methyl-2-propynyl, 2-butynyl, 1-pentynyl, 1-hexynyl and the like It is not limited.
- (C2-C4) alkynyl means straight or branched alkynyl having 2 to 4 carbon atoms.
- Examples of (C2-C4) alkynyl include, but are not limited to, suitable examples of the above (C2-C6) alkynyl examples.
- (C1-C6) alkoxy means (C1-C6) alkyl-O- (wherein the (C1-C6) alkyl moiety has the same meaning as defined above).
- Examples of (C1-C6) alkoxy include methoxy, ethoxy, propoxy, isopropoxy, butoxy, sec-butoxy, isobutoxy, tert-butoxy, pentyloxy, isopentyloxy, neopentyloxy, hexyloxy, etc. It is not limited to.
- (C1-4) alkoxy means (C1-C4) alkyl-O— (where the (C1-C4) alkyl moiety has the same meaning as defined above).
- Examples of (C1-C4) alkoxy include, but are not limited to, suitable examples of the above (C1-C6) alkoxy examples.
- the cyclic hydrocarbon group means an aromatic or non-aromatic monocyclic or polycyclic cyclic group in which all atoms constituting the ring are carbon atoms.
- examples of cyclic hydrocarbon groups include aromatic or non-aromatic monocyclic, bicyclic or tricyclic 3-14 membered (preferably 5-14 membered, more preferably 5-10 membered) cyclic hydrocarbon groups, but not limited thereto.
- examples of cyclic hydrocarbon groups include aromatic or non-aromatic monocyclic or bicyclic (preferably monocyclic) 4 to 8 members (preferably 5 to 6 members). These cyclic hydrocarbon groups include, but are not limited to:
- cyclic hydrocarbon groups include, but are not limited to, cycloalkyl, aryl, and the like.
- Aryl is an aromatic cyclic group among the cyclic hydrocarbon groups as defined above.
- Cyclic hydrocarbon groups as defined or exemplified above may include non-fused cyclic (eg monocyclic or spirocyclic) and fused cyclic cyclic groups where possible. .
- the cyclic hydrocarbon group as defined or exemplified above may be unsaturated, partially saturated or saturated, if possible.
- a cyclic hydrocarbon group as defined or exemplified above is also referred to as a carbocyclic group.
- a carbocycle is a ring corresponding to a cyclic hydrocarbon group as defined or exemplified above.
- examples of the “substituent” relating to the term “optionally substituted” include one or more substituents (preferably 1 to 4) independently selected from the substituent group (a). But not limited to these.
- Substituent group (a) includes halogen atom; nitro group; cyano group; hydroxy group; amino group; (C1-C6) alkyl; (C1-C6) haloalkyl; (C3-C6) cycloalkyl; (C2-C6). (C2-C6) alkynyl; (C1-C6) alkoxy; phenyl; phenoxy and the like.
- one or more substituents independently selected from the substituent group (a) are independently selected from the substituent group (b). And may have one or more substituents (preferably 1 to 4 substituents).
- substituent group (b) is the same as the substituent group (a).
- a compound having an isomer includes all isomers and an arbitrary mixture thereof in an arbitrary ratio.
- xylene includes o-xylene, m-xylene, p-xylene and any mixture thereof in any proportion.
- dichlorobenzene includes o-dichlorobenzene, m-dichlorobenzene, p-dichlorobenzene and any mixture thereof in any proportion.
- the method according to the present invention includes the following scheme (wherein R 1 and R 2 are as described in [1] above).
- the process according to the invention comprises reacting a compound of formula (1) ( ⁇ -disubstituted- ⁇ , ⁇ -unsaturated aldehyde) with hydroxylamine (NH 2 OH) in the presence of a catalyst, ) Compound (5,5-disubstituted-4,5-dihydroisoxazole).
- the method according to the present invention uses a compound of formula (1).
- the compound of the formula (1) is a known compound, or can be produced from a known compound according to a known method.
- compounds of formula (1) include, but are not limited to: 3-methyl-2-butene-1-al (3- Methyl-2-buten-1-al is also referred to as 3-methyl-2-butenal, 3-methylbut-2-enal or prenal), 3-methyl-2-pentene -1-R, 3-ethyl-2-penten-1-al, 3,4-dimethyl-2-penten-1-al, 3,4,4-trimethyl-2-penten-1-al, 4-chloro -3-Methyl-2-buten-1-al, 4,4,4-trifluoro-3-methyl-2-buten-1-al, 3-cyclopropyl-2-buten-1-al, 2-cyclo Butylideneacetaldehyde, 2-cyclopentylideneacetaldehyde, 2-cyclohexylideneacetaldehyde, 3-methyl-2-hepten-1-al, 3,7-dimethyl-2,6-octadien-1-
- the product of the present invention is 5,5-disubstituted-4,5-dihydroisoxazole corresponding to the compound of formula (1) used as a raw material.
- Specific examples of compounds of formula (3) include, but are not limited to: 5,5-dimethyl-4,5-dihydroisoxazole, 5-ethyl-5-methyl-4,5-dihydro Isoxazole, 5,5-diethyl-4,5-dihydroisoxazole, 5-isopropyl-5-methyl-4,5-dihydroisoxazole, 5- (tert-butyl) -5-methyl-4,5-dihydro Isoxazole, 5- (chloromethyl) -5-methyl-4,5-dihydroisoxazole, 5-methyl-5- (trifluoromethyl) -4,5-dihydroisoxazole, 5-cyclopropyl-5-methyl -4,5-dihydroisoxazole, 5-oxa-6
- hydroxylamine used in the present invention is not particularly limited as long as the reaction proceeds and safety is ensured.
- examples of hydroxylamine include, but are not limited to, hydroxylamine (free) and its salts.
- examples of hydroxylamine (free) include, but are not limited to, 50% aqueous hydroxylamine, 60% aqueous hydroxylamine, 70% aqueous hydroxylamine, 80% aqueous hydroxylamine, 90% aqueous hydroxylamine, and the like.
- “50% hydroxylamine aqueous solution” is also referred to as “Hydroxylamine (50% solution in water)”.
- hydroxylamine salts include hydroxylamine hydrochloride, hydroxylamine sulfate, hydroxylamine nitrate (eg, 50% aqueous solution), hydroxylamine carbonate, hydroxylamine phosphate, hydroxylamine acetate, hydroxylamine oxalate, and the like. It is not limited.
- the hydroxylamine used in the present invention may be used alone or in combination of two or more in any ratio.
- the form of hydroxylamine used in the present invention may be any form as long as the reaction proceeds and safety is ensured. As long as the reaction proceeds and safety is ensured, examples of the form include solids and liquids, aqueous solutions of any concentration, solutions of solvents other than water (for example, organic solvents), and the like.
- the form of hydroxylamine may be any form as long as the reaction proceeds and safety is ensured.
- preferred examples of the hydroxylamine (free) form include an aqueous solution having a concentration of 10% to less than 70%, preferably an aqueous solution having a concentration of 45% to 55%.
- hydroxylamine include free hydroxylamine aqueous solution and hydroxylamine salt, more preferably free hydroxylamine aqueous solution, hydroxylamine hydrochloride, hydroxyl group sulfate.
- An amine more preferably 45% to 55% aqueous hydroxylamine, hydroxylamine hydrochloride, hydroxylamine sulfate, more preferably 45% to 50% aqueous hydroxylamine, hydroxylamine hydrochloride, hydroxylamine sulfate.
- the amount of hydroxylamine used in the present invention is as follows.
- the hydroxylamine (NH 2 OH) is 0.9 to 2.0 mol, preferably 0.9 to 1.5 mol, more preferably 0, relative to 1 mol of the compound of the formula (1).
- a range of 0.9 to 1.1 mol, and more preferably 0.9 to 1.1 mol can be exemplified.
- a range of 0.0 to 1.2 mol, more preferably 1.0 to 1.1 mol can also be exemplified.
- the hydroxylamine (NH 2 OH) is 0.90 mol or more and less than 1.00 mol, preferably 0.90 mol or more and 0.99 mol or less, relative to 1 mol of the compound of the formula (1). More preferably, a range of 0.90 mol to 0.98 mol, more preferably 0.93 mol to 0.97 mol, can also be exemplified.
- the reaction of the present invention is preferably carried out using a neutralizing agent.
- the neutralizing agent is a base for neutralizing the hydroxylamine salt to release free hydroxylamine.
- neutralizing agents include alkali metal hydroxides (for example, lithium hydroxide, sodium hydroxide, potassium hydroxide, etc.), alkaline earth metal hydroxides (for example, magnesium hydroxide, calcium hydroxide, water) Barium oxide etc.), alkali metal carbonates (eg lithium carbonate, sodium carbonate, potassium carbonate etc.), alkaline earth metal carbonates (eg magnesium carbonate, calcium carbonate, barium carbonate etc.), alkali metal bicarbonates (eg Lithium carbonate, sodium bicarbonate, potassium bicarbonate, etc.), alkali metal carboxylates (eg, lithium acetate, sodium acetate, potassium acetate, etc.), amines (eg, triethylamine, tributylamine, diisopropylethylamine, 1,8 -Diazabicyclo [5.4.0] -7-unde -7-ene (DBU), pyridine, etc.), ammonia (e.g., 25-30% ammonia water,
- the neutralizing agent include sodium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate, sodium hydrogen carbonate, potassium hydrogen carbonate and the like, ammonia, more preferably sodium hydroxide, sodium carbonate, sodium hydrogen carbonate, ammonia, More preferably, it contains sodium hydroxide.
- sodium hydroxide include sodium hydroxide beads, 48% aqueous sodium hydroxide, 25% aqueous sodium hydroxide, 10% aqueous sodium hydroxide, preferably 48% aqueous sodium hydroxide, 25% aqueous sodium hydroxide, and more.
- it includes 48% aqueous sodium hydroxide solution, but is not limited thereto.
- the form of the neutralizing agent may be any form as long as the reaction proceeds. Examples of forms include solids with only neutralizers, liquids and gases, aqueous solutions of any concentration, solutions of solvents other than water (eg, organic solvents), and the like.
- the form of the neutralizing agent can be appropriately selected by those skilled in the art.
- the amount of neutralizing agent used may be any amount as long as the reaction proceeds.
- examples of the amount of the neutralizing agent include an amount that can neutralize the hydroxylamine salt to liberate free hydroxylamine. From the viewpoint of yield, by-product suppression, economic efficiency, etc., 0.9 to 1.1 equivalents, preferably 0.9 to 1.0 equivalents can be exemplified with respect to 1 equivalent of hydroxylamine salt. However, the amount used can be appropriately adjusted by those skilled in the art.
- the reaction of the present invention is preferably carried out in the presence of a solvent.
- the solvent may be any solvent as long as the reaction of the present invention proceeds and safety is ensured.
- the solvent include water, alcohols (eg, methanol, ethanol, 2-propanol, butanol, tert-butanol (tert-butanol is also referred to as tert-butyl alcohol)), ethers (eg, tetrahydrofuran (THF), 1,4-dioxane, diisopropyl ether, dibutyl ether, di-tert-butyl ether, cyclopentyl methyl ether (CPME), methyl-tert-butyl ether, 1,2-dimethoxyethane (DME), diglyme, triglyme ), Nitriles (eg acetonitrile), amides (eg N, N-dimethyl)
- preferred examples of the solvent include water, alcohols, nitriles, ethers, aromatic hydrocarbon derivatives, halogenated aliphatic carbonization. Hydrogens and any combination thereof in any proportion, more preferably water, nitriles, aromatic hydrocarbon derivatives, halogenated aliphatic hydrocarbons and any combination thereof in any proportion, more preferably water , Aromatic hydrocarbon derivatives, halogenated aliphatic hydrocarbons and any combination thereof in any proportion, particularly preferably any combination of water and halogenated aliphatic hydrocarbons in any proportion.
- solvents are water, methanol, ethanol, 2-propanol, tert-butanol, acetonitrile, tetrahydrofuran (THF), toluene, xylene, chlorobenzene, dichlorobenzene, dichloromethane and any combination thereof in any proportion.
- More preferably water, acetonitrile, toluene, xylene, chlorobenzene, dichlorobenzene, dichloromethane and any combination thereof in any proportion more preferably water, toluene, xylene, chlorobenzene, dichlorobenzene, dichloromethane and any proportion thereof Including any combination of water and dichloromethane.
- the presence of water is preferable. In either case, as long as the reaction proceeds, the solvent may be separated into a single layer or two layers.
- preferable examples of the solvent include water, alcohols, nitriles, ethers, aromatic hydrocarbon derivatives, halogenated aliphatic hydrocarbons, and an arbitrary ratio thereof. Any combination, more preferably water, alcohols, nitriles, halogenated aliphatic hydrocarbons and any combination thereof in any proportion, more preferably water, nitriles, halogenated aliphatic hydrocarbons and any Any combination thereof, particularly preferably any combination of water and halogenated aliphatic hydrocarbons.
- solvents are water, methanol, ethanol, 2-propanol, tert-butanol, acetonitrile, tetrahydrofuran (THF), toluene, xylene, chlorobenzene, dichlorobenzene, dichloromethane and any combination thereof in any proportion. More preferably water, methanol, ethanol, 2-propanol, tert-butanol, acetonitrile, dichloromethane and any combination thereof in an arbitrary ratio, more preferably water, acetonitrile, dichloromethane and any combination thereof in an arbitrary ratio Particularly preferably, it contains any combination of water and dichloromethane in any proportion. However, in any case, the presence of water is preferable. In either case, as long as the reaction proceeds, the solvent may be separated into a single layer or two layers.
- Water derived from an aqueous hydroxylamine solution can be understood as a solvent.
- a neutralizing agent eg, hydroxylamine hydrochloride, hydroxylamine sulfate, etc.
- water derived from an aqueous solution of the neutralizing agent eg, 48% aqueous sodium hydroxide
- Water produced by neutralization can also be understood as a solvent.
- the amount of the solvent used may be any amount as long as the reaction system can be sufficiently stirred. From the viewpoint of yield, suppression of by-products, economic efficiency, etc., more than 0 (zero) and not more than 10 L (liter), preferably 0.001 to 5 L, 0.001 with respect to 1 mol of the compound of formula (1) To 0.5 L, 0.001 to 0.2 L, preferably 0.01 to 5 L, 0.01 to 0.5 L, 0.01 to 0.2 L, more preferably 0.02 to 0.5 L, more preferably Can exemplify a range of 0.02 to 0.2 L. When a combination of two or more solvents is used, the ratio of the two or more solvents may be any ratio as long as the reaction proceeds.
- the reaction of the present invention is preferably performed in the presence of water.
- the amount of water is as follows.
- the amount of water is, for example, 50 mol% or more, preferably 100 mol% or more, more preferably 150 mol% or more, and still more preferably 180 mol% or more with respect to 1 mol of the compound of formula (1).
- 50 mol% to 6000 mol% preferably 50 mol% to 3000 mol%, more preferably 50 mol% to 1500 mol%, more preferably 50 mol% to 1000 mol%, still more preferably 50 mol% to 800 mol%, still more preferably 50 mol%.
- 150 mol% to 6000 mol% preferably 150 mol% to 3000 mol%, more preferably 150 mol% to 1500 mol%, more preferably 150 mol% to 1000 mol%, still more preferably 150 mol% to 800 mol%, still more preferably. It is 150 mol% to 500 mol%, more preferably 150 mol% to 400 mol%, more preferably 150 mol% to 350 mol%.
- reaction temperature is not particularly limited. From the viewpoints of yield, by-product suppression, economic efficiency, etc., -30 ° C (minus 30 ° C) to 160 ° C, preferably 0 ° C to 80 ° C, more preferably 20 ° C to 80 ° C, still more preferably 20 ° C to A range of 60 ° C., more preferably 30 ° C. to 50 ° C. can be exemplified.
- the reaction proceeds satisfactorily in an industrially preferable temperature range (for example, 40 to 60 ° C.) as understood from the Examples.
- an industrially preferable temperature range for example, 40 to 60 ° C.
- the reaction proceeds satisfactorily even at a relatively low temperature (for example, 20 to 40 ° C.).
- the reaction temperature of the present invention is not limited to these temperature ranges.
- reaction time is not particularly limited. From the viewpoint of yield, by-product suppression, economic efficiency, etc., the range is 0.5 hours to 96 hours, preferably 1 hour to 50 hours, more preferably 6 hours to 50 hours, still more preferably 6 hours to 24 hours. Can be illustrated.
- the reaction of the present invention is performed in the presence of a catalyst.
- the catalyst used in the present invention is preferably an acid catalyst or an acid-base catalyst.
- the compound of formula (3) is prepared in the presence of an acid catalyst.
- the acid catalyst may be any acid catalyst as long as the reaction proceeds. In addition, as long as the reaction proceeds, any of the following forms may be used and are included in the scope of the present invention.
- a free acid can be used as the acid catalyst.
- the acid catalyst may be used in the form of a partial salt. When the acid catalyst is a partial salt, the acid catalyst may be a single salt or a double salt.
- the acid catalyst may be used in the form of an anhydride.
- the acid catalyst may be used in the form of a hydrate.
- the acid catalyst may be used in the form of a dimer, trimer or higher order multimer.
- acid catalysts include, but are not limited to:
- Mineral acids can be used as the acid catalyst.
- Specific examples of mineral acids include, but are not limited to, hydrochloric acid, sulfuric acid, and nitric acid.
- Carboxylic acids can be used as the acid catalyst. As long as the reaction proceeds, the carboxylic acid may be used as the free acid or as its anhydride.
- examples of carboxylic acids include saturated or unsaturated aliphatic (C1-C8) monocarboxylic acids, dicarboxylic acids and tricarboxylic acids, and halogen atoms, optionally substituted by one or more halogen atoms,
- C1 Includes aromatic (C7-C11) monocarboxylic acids, dicarboxylic acids and tricarboxylic acids optionally substituted by one or more substituents independently selected from -C4) alkyl and (C1-C4) haloalkyl.
- polycarboxylic acids such as dicarboxylic acids and tricarboxylic acids may be partially salted with a plurality of carboxy groups.
- Examples of preferred carboxylic acids include saturated or unsaturated aliphatic (C1-C8) carboxylic acids that may be substituted with one or more halogen atoms.
- Examples of carboxylic anhydrides are those anhydrides.
- examples of carboxylic acids include saturated or unsaturated aliphatic (C1-C8) carboxylic acids that may be substituted with one or more halogen atoms, and halogen atoms, (C1-C4) alkyl and (C1 -C4) including benzoic acid optionally substituted by one or more substituents independently selected from haloalkyl.
- Examples of preferred carboxylic acids include saturated or unsaturated aliphatic (C1-C8) carboxylic acids that may be substituted with one or more halogen atoms.
- Examples of carboxylic anhydrides are those anhydrides.
- carboxylic acid examples include acetic acid, trifluoroacetic acid, trichloroacetic acid, dichloroacetic acid, maleic acid, citric acid, benzoic acid and phthalic acid.
- carboxylic acid anhydride examples include trifluoroacetic anhydride, maleic anhydride, and phthalic anhydride.
- the maleic acid may be maleic anhydride.
- sulfonic acid can be used as the acid catalyst. So long as the reaction proceeds, the sulfonic acid may be used as the free acid or as its anhydride.
- sulfonic acids include methane sulfonic acid, trifluoromethane sulfonic acid (TfOH), benzene sulfonic acid, p-toluene sulfonic acid (TsOH) and 10-camphor sulfonic acid (CSA).
- p-toluenesulfonic acid (TsOH) includes “p-toluenesulfonic acid monohydrate (TsOH ⁇ H 2 O)”.
- Specific examples of sulfonic acid anhydrides include methanesulfonic anhydride and trifluoromethanesulfonic anhydride.
- Phosphoric acids and derivatives thereof can be used as the acid catalyst.
- phosphoric acids and derivatives thereof are not particularly limited. Examples of phosphoric acids and derivatives thereof include, but are not limited to:
- phosphoric acid may be used as a free acid, or one or more OH groups in the molecule may partially form a salt.
- phosphoric acid may be an anhydride thereof.
- Specific examples of phosphoric acids include phosphoric acid (orthophosphoric acid; H 3 PO 4 ), ammonium dihydrogen phosphate, polyphosphoric acid, pyrophosphoric acid (diphosphoric acid) and diphosphorus pentoxide.
- Phosphoric acid monoesters As long as the reaction proceeds, the phosphoric acid monoester may be used as a free acid, or one or more OH groups in the molecule partially form a salt. It may be. Phosphoric acid monoester may be used as its anhydride as long as it is chemically acceptable. Specific examples of phosphate monoesters include ethyl phosphate (ie, ethyl dihydrogen phosphate; (C 2 H 5 O) P ( ⁇ O) (OH) 2 ) and phenyl phosphate (ie, phosphoric acid). Dihydrogen phenyl; (C 6 H 5 O) P ( ⁇ O) (OH) 2 ).
- Phosphoric acid diesters As long as the reaction proceeds, the phosphoric acid diester may be used as the free acid or as its anhydride as long as it is chemically acceptable. Good. Specific examples of phosphate diesters include diethyl phosphate (ie, diethyl hydrogen phosphate; (C 2 H 5 O) 2 P ( ⁇ O) OH) and diphenyl phosphate (ie, diphenyl hydrogen phosphate; ( C 6 H 5 O) 2 P ( ⁇ O) OH).
- diethyl phosphate ie, diethyl hydrogen phosphate; (C 2 H 5 O) 2 P ( ⁇ O) OH
- diphenyl phosphate ie, diphenyl hydrogen phosphate; ( C 6 H 5 O) 2 P ( ⁇ O) OH.
- Solid acids can be used as the acid catalyst.
- solid acids include, but are not limited to, cation exchange resins, heteropoly acids, zeolites, montmorillonite, alumina and the like.
- the term “cation exchange resin” is not particularly limited, and means a known cation exchange resin having strong or weak acidity.
- Specific examples of the cation exchange resin include Diaion (registered trademark) series (for example, Diaion SK1B, SK110, SK116, P206, WK40, etc.) manufactured by Mitsubishi Chemical Corporation, and Amberlite (registered by Rohm and Haas). Trademark) series (for example, Amberlite IR-120B, IR-200CT, IRC50, IR-124, etc.), Dowex (registered trademark) series (for example, 50W-X8, etc.) manufactured by The Dow Chemical Company, etc. Including, but not limited to.
- heteropolyacids include 12-molybdo (VI) phosphoric acid n-hydrate (H 3 [PMo 12 O 40 ] .nH 2 O (n ⁇ 30)). 12 tungsto (VI) phosphoric acid n-hydrate (H 3 [PW 12 O 40 ] ⁇ nH 2 O (n ⁇ 30)), 12 tungsto (VI) Examples include, but are not limited to, acid n hydrate (12-tungsto (VI) silicic acid n-hydrate; H 4 [SiW 12 O 40 ] ⁇ nH 2 O (eg, n ⁇ 26)). 12 molybdo (VI) phosphate n-hydrate is also referred to as phosphomolybdic acid n-hydrate.
- 12 tungsto (VI) phosphate n-hydrate is also referred to as phosphotungstic acid n-hydrate.
- 12 tungsto (VI) silicic acid n-hydrate is also referred to as silicotungstic acid n-hydrate.
- a salt of a heteropolyacid can also be used. Specific examples of the salt of the heteropolyacid include sodium 12-molybdo (VI) phosphate n-hydrate; Na 3 [PMo 12 O 40 ] ⁇ nH 2 O (n ⁇ 30)) etc., but is not limited to this.
- 12 molybdo (VI) sodium phosphate n-hydrate is also referred to as sodium phsophomolybdate n-hydrate.
- zeolite examples include, but are not limited to, ZSM-5 type, mordenite type, L type, Y type, X type and beta type, etc.
- preferred examples of the acid catalyst are as follows, but are not limited thereto.
- One or more acids preferably 1 to 3, more preferably 1 or 2, more preferably 1) selected from the group consisting of mineral acids, carboxylic acids, sulfonic acids and phosphoric acids are preferred.
- preferred specific examples of the acid catalyst are as follows, but are not limited thereto.
- Hydrochloric acid sulfuric acid, nitric acid, trifluoroacetic acid, trichloroacetic acid, dichloroacetic acid, maleic acid, maleic anhydride, methanesulfonic acid, trifluoromethanesulfonic acid, benzenesulfonic acid, p-toluenesulfonic acid, 10-camphorsulfonic acid, phosphoric acid 1 or more (preferably 1 to 3, more preferably 1 or 2 and even more preferably 1) acids selected from the group consisting of ethyl phosphate, phenyl phosphate, diethyl phosphate and diphenyl phosphate preferable.
- Nitric acid trifluoroacetic acid, trichloroacetic acid, dichloroacetic acid, maleic acid, maleic anhydride, methanesulfonic acid, trifluoromethanesulfonic acid, benzenesulfonic acid, p-toluenesulfonic acid, 10-camphorsulfonic acid and diphenyl phosphate
- One or more (preferably 1 to 3, more preferably 1 or 2, and still more preferably 1) acids are more preferable.
- One or more selected from the group consisting of nitric acid, trifluoroacetic acid, trichloroacetic acid, maleic acid, maleic anhydride, benzenesulfonic acid and p-toluenesulfonic acid (preferably 1 to 3, more preferably 1 or 2; More preferred is 1) acid.
- One or more selected from the group consisting of nitric acid, trifluoroacetic acid, trichloroacetic acid, maleic acid, maleic anhydride, and p-toluenesulfonic acid preferably 1 to 3, more preferably 1 or 2, more preferably 1 Are more preferred.
- 1 or more (preferably 1 to 3, more preferably 1 or 2, more preferably 1) selected from the group consisting of nitric acid, trifluoroacetic acid, maleic acid, maleic anhydride and p-toluenesulfonic acid Acid is more preferred.
- One or more (preferably 1 to 3, more preferably 1 or 2, more preferably 1) acids selected from the group consisting of nitric acid, trifluoroacetic acid, maleic acid and p-toluenesulfonic acid are more preferred.
- One or more (preferably 1 to 3, more preferably 1 or 2, more preferably 1) acids selected from the group consisting of nitric acid, trifluoroacetic acid, maleic acid and maleic anhydride are also more preferred.
- One to three (preferably one or two, more preferably one) acids selected from the group consisting of trifluoroacetic acid, maleic acid and maleic anhydride are more preferred. More preferred are 1 or 2 (preferably 1) acids selected from the group consisting of trifluoroacetic acid and maleic acid. More preferred is trifluoroacetic acid.
- the acid catalyst may be used alone or in combination of two or more in any ratio.
- the form of the acid catalyst may be any form as long as the reaction proceeds. Examples of the form include a solid containing only an acid catalyst, a liquid or a gas, an aqueous solution of any concentration, or a solution of a solvent other than water (for example, an organic solvent).
- the form can be appropriately selected by those skilled in the art.
- the amount of the acid catalyst used may be any amount as long as the reaction proceeds. From the viewpoint of yield, suppression of by-products, economic efficiency, etc., 0.01 to 1.0 mol, preferably 0.01 to 0.30 mol, more preferably, relative to 1 mol of the compound of formula (1). Examples thereof include 0.02 to 0.30 mol, 0.02 to 0.20 mol, and 0.02 to 0.10 mol.
- the amount of hydroxylamine used is 0.5-2 mol, preferably 0.9-1.5 mol, more preferably 0, relative to 1 mol of the compound of formula (1).
- examples include 9.9 to 1.2 mol, 1.0 to 1.2 mol, more preferably 0.9 to 1.1 mol, and 1.0 to 1.1 mol.
- the compound of formula (3) is prepared in the presence of an acid-base catalyst.
- An acid-base catalyst is a mixture of an acid and a base.
- the acid-base catalyst may be any acid-base catalyst as long as the reaction proceeds. In addition, any form may be used as long as the reaction proceeds, and it is included in the scope of the present invention.
- the acid-base catalyst is a salt
- the acid-base catalyst may be a single salt or a double salt.
- the acid-base catalyst may be used in the form of an anhydride.
- the acid-base catalyst may be used in the form of a hydrate.
- the acid and / or base of the acid-base catalyst may be used in the form of a dimer or the like.
- the acid-base catalyst may be used alone or in combination of two or more in any ratio.
- the form of the acid-base catalyst may be any form as long as the reaction proceeds. Examples of the form include a solid or liquid containing only an acid-base catalyst, an aqueous solution of any concentration, or a solution of a solvent other than water (for example, an organic solvent).
- the form can be appropriately selected by those skilled in the art.
- the acids exemplified as the acid catalyst can be used.
- preferred examples of the acid of the acid-base catalyst are as follows, but are not limited thereto.
- One or more acids preferably 1 to 3, more preferably 1 or 2, more preferably 1) selected from the group consisting of mineral acids, carboxylic acids, sulfonic acids and phosphoric acids are preferred.
- One or more (preferably 1 to 3, more preferably 1 or 2, more preferably 1) acids selected from the group consisting of mineral acids, carboxylic acids and sulfonic acids are preferred.
- One or more (preferably 1 to 3, more preferably 1 or 2, more preferably 1) acids selected from the group consisting of mineral acids and carboxylic acids are more preferred.
- preferred specific examples of the acid-base catalyst acid are as follows, but are not limited thereto.
- Hydrochloric acid sulfuric acid, nitric acid, trifluoroacetic acid, trichloroacetic acid, dichloroacetic acid, maleic acid, maleic anhydride, methanesulfonic acid, trifluoromethanesulfonic acid, benzenesulfonic acid, p-toluenesulfonic acid, 10-camphorsulfonic acid, phosphoric acid 1 or more (preferably 1 to 3, more preferably 1 or 2 and even more preferably 1) acids selected from the group consisting of ethyl phosphate, phenyl phosphate, diethyl phosphate and diphenyl phosphate preferable.
- Nitric acid trifluoroacetic acid, trichloroacetic acid, dichloroacetic acid, maleic acid, maleic anhydride, methanesulfonic acid, trifluoromethanesulfonic acid, benzenesulfonic acid, p-toluenesulfonic acid, 10-camphorsulfonic acid and diphenyl phosphate
- One or more (preferably 1 to 3, more preferably 1 or 2, and still more preferably 1) acids are more preferable.
- One or more selected from the group consisting of nitric acid, trifluoroacetic acid, trichloroacetic acid, maleic acid, maleic anhydride, benzenesulfonic acid and p-toluenesulfonic acid (preferably 1 to 3, more preferably 1 or 2; More preferred is 1) acid.
- One or more selected from the group consisting of nitric acid, trifluoroacetic acid, trichloroacetic acid, maleic acid, maleic anhydride, and p-toluenesulfonic acid preferably 1 to 3, more preferably 1 or 2, more preferably 1 Are more preferred.
- 1 or more (preferably 1 to 3, more preferably 1 or 2, more preferably 1) selected from the group consisting of nitric acid, trifluoroacetic acid, maleic acid, maleic anhydride and p-toluenesulfonic acid Acid is more preferred.
- One or more (preferably 1 to 3, more preferably 1 or 2, more preferably 1) acids selected from the group consisting of nitric acid, trifluoroacetic acid, maleic acid and p-toluenesulfonic acid are more preferred.
- One or more (preferably 1 to 3, more preferably 1 or 2, more preferably 1) acids selected from the group consisting of nitric acid, trifluoroacetic acid, maleic acid and maleic anhydride are also more preferred.
- One to three acids selected from the group consisting of nitric acid, trifluoroacetic acid and maleic acid are more preferred. Also preferred are 1 to 3 (preferably 1 or 2, more preferably 1) acids selected from the group consisting of trifluoroacetic acid, maleic acid and maleic anhydride. More preferred are 1 or 2 (preferably 1) acids selected from the group consisting of trifluoroacetic acid and maleic acid. More preferred is trifluoroacetic acid.
- amines are preferable.
- R 3 , R 4 and R 5 are each independently hydrogen, optionally substituted (C1-C6) alkyl; optionally substituted (C3-C6) cycloalkyl; Optionally substituted (C2-C6) alkenyl; optionally substituted (C2-C6) alkynyl; or optionally substituted aryl; or any two of R 3 , R 4 and R 5 are Together with the nitrogen atom to which is attached forms a 4- to 12-membered heterocycle, in which the ring formed may be substituted, wherein R 3 , R 4 and R 5 At least one is not hydrogen) Primary amines, secondary amines, tertiary amines, or heterocyclic amines.
- primary amines include, but are not limited to, methylamine, ethylamine, propylamine, butylamine, aniline and the like.
- secondary amines include, but are not limited to, diethylamine, dipropylamine, diisopropylamine, N-methylaniline (PhNHMe), N-ethylaniline, piperidine, morpholine, and the like.
- tertiary amines are triethylamine, tripropylamine, tributylamine, diisopropylethylamine, 1,4-diazabicyclo [2.2.2] octane (DABCO), N, N-dimethylaniline, N, N -Including but not limited to diethylaniline and the like.
- heterocyclic amine examples include pyridine, 4- (dimethylamino) -pyridine, 4-pyrrolidinopyridine, 2,6-lutidine, quinoline, isoquinoline, 1,8-diazabicyclo [5.4.0].
- pyridine 4- (dimethylamino) -pyridine
- 4-pyrrolidinopyridine 2,6-lutidine
- quinoline isoquinoline
- DBU -7-undec-7-ene
- DBN 1,5-diazabicyclo [4.3.0] non-5-ene
- Nona-5-ene also belongs to a tertiary amine.
- Examples of amines also include imidazolinones.
- Specific examples of imidazolinones include optical isomers such as (2S, 5S) -2-tert-butyl-3-methyl-5-benzyl-4-imidazolinone and diastereomers thereof, and analogs thereof including.
- imidazolinones are expensive, it is industrially preferable not to use imidazolinones.
- preferred examples of the base of the acid-base catalyst include a secondary amine.
- Preferred specific examples of acid-base catalyzed bases include N-methylaniline, morpholine and pyrrolidine, more preferably N-methylaniline.
- the amount of the acid-base catalyst used may be any amount as long as the reaction proceeds.
- the acid to base ratio of the acid-base catalyst may be 1: 1 or not 1: 1.
- the amount of acid used in the acid-base catalyst is from 0.001 to 1.00 mol, preferably from 0.001 mol to 1 mol of the compound of formula (1), from the viewpoints of yield, suppression of by-products, economic efficiency and the like. Examples include 005 to 0.30 mol, 0.005 to 0.10 mol, more preferably 0.01 to 0.10 mol, and 0.01 to 0.05 mol.
- the amount of base used in the acid-base catalyst is 0.001 to 1.00 mol, preferably 0.001 mol per 1 mol of the compound of formula (1) from the viewpoints of yield, by-product suppression, economic efficiency, and the like.
- Examples include 005 to 0.30 mol, 0.005 to 0.10 mol, more preferably 0.01 to 0.10 mol, and 0.01 to 0.05 mol.
- the amount of hydroxylamine used is 0.5-2 mol, 0.9-1.5 mol, 0.9-1 with respect to 1 mol of the compound of the formula (1).
- a range of 2 moles can be exemplified.
- the amount of hydroxylamine used is preferably less than the compound of formula (1). In one embodiment, the amount of hydroxylamine used is less than 1.00 mol, preferably 0.99 mol or less, more preferably 0.98 mol or less, per 1 mol of the compound of the formula (1).
- it is 0.90 mol or more and 1.00 mol or less, preferably 0.90 mol or more and less than 1.00 mol, more preferably 0.90 mol or more and 0 mol per 1 mol of the compound of formula (1).
- An example is a range of .99 mol or less, more preferably 0.90 mol to 0.98 mol.
- Examples 2 to 11 As shown in the table below, the amount of hydroxylamine (NH 2 OH), the type and amount of acid, and the stirring conditions (aging conditions) were changed as in Example 1, except that 5,5- Dimethyl-4,5-dihydroisoxazole was prepared.
- the components other than the solvent and the like in the reaction mixture include (1-a; raw material) and (3-a; target product), and (2-a; intermediate) ), (9-1-a; aldehyde derivative of dimer intermediate) and (9-2-a; oxime derivative of dimer intermediate) were detected.
- GC by analysis such as GC-MS and 1 H NMR, (1-a ; raw material), (3-a; target product), (2-a; Intermediate) (9- 1-a; aldehyde derivative of dimer intermediate) and (9-2-a; oxime derivative of dimer intermediate) were identified.
- Example 12 Production of 5,5-dimethyl-4,5-dihydroisoxazole (3-a) using an acid catalyst in a solvent containing an organic solvent.
- Prenal (478 ⁇ l, specific gravity: 0.879 20 ° C.), 421 mg, purity: 98% (GC area%), 4.9 mmol, 100 mol%) was added by a microsyringe.
- Dichloromethane (0.5 ml, 0.1 L / mol) and trifluoroacetic acid (38 ⁇ l, specific gravity: 1.49 (20 ° C.), 58 mg, 0.5 mmol, 10 mol%) were added thereto.
- Hydroxylamine aqueous solution (282 ⁇ l, specific gravity: 1.122 (20 ° C.), 316 mg, purity: 52% (titration with 1.0 M hydrochloric acid), 4.98 mmol, 102 mol%) was performed so as not to exceed 30 ° C. under ice cooling. In addition, the mixture was stirred at 50 ° C. for 20 hours (aging). The reaction mixture was analyzed by GC (area percentage).
- Examples 13-15 As shown in the following table, the same as Example 12 except that the type and amount of the solvent, the amount of hydroxylamine (NH 2 OH), the type and amount of the acid catalyst, and the stirring conditions (aging conditions) were changed. Thus, 5,5-dimethyl-4,5-dihydroisoxazole was produced.
- Example 16 Preparation of 5,5-dimethyl-4,5-dihydroisoxazole (3-a) using an acid-base catalyst
- Prenal (478 ⁇ l, specific gravity: 0.879 (20 ° C.), 421 mg, purity: 98% (GC area%), 4.9 mmol, 100 mol%) was added with a microsyringe.
- Trifluoroacetic acid (19 ⁇ l, specific gravity: 1.49 (20 ° C.), 29 mg, 0.25 mmol, 5 mol%) was added thereto.
- Examples 17-31 As shown in the table below, the procedure was the same as in Example 16 except that the amount of hydroxylamine (NH 2 OH), the type and amount of acid, the type and amount of base, and the stirring conditions (aging conditions) were changed. Thus, 5,5-dimethyl-4,5-dihydroisoxazole was produced.
- Comparative Example 1 As shown in the table below, the amount of hydroxylamine (NH 2 OH), the type and amount of base, and the stirring conditions (aging conditions) were changed and the same as in Example 16 except that no acid was added. An attempt was made to produce 5,5-dimethyl-4,5-dihydroisoxazole.
- Examples 1 to 6 are examples using an acid catalyst. When an acid catalyst was used, good yields were obtained with both prenal excess (Examples 2, 4, 6) and hydroxylamine excess (Examples 1, 3, 5). When an acid catalyst was used, an effect was obtained in which the yield was not affected by the amount ratio (molar ratio) of prenal and hydroxylamine.
- the results of Examples 7 to 11 show that various acids can be used as the acid catalyst of the present invention.
- Examples 12 to 15 are examples using an acid catalyst in a solvent containing an organic solvent. Good yields were obtained in the presence of various organic solvents.
- Examples 16 to 25 are examples using an acid-base catalyst. Good yields were also obtained in Example 17 using the same amount (equimolar) of prenal and hydroxylamine.
- Examples 16 and 18 to 23 which were reacted under the condition of excess plenal obtained further excellent yields.
- the results of Examples 26 to 31 show that various acids and bases can be used as the acid-base catalyst of the present invention.
- Comparative Example 1 is an example in which the reaction was attempted without an acid catalyst. The reaction hardly proceeded without the acid catalyst.
- Trifluoroacetic acid (3.8 ⁇ l, specific gravity: 1.49 (20 ° C.), 5.7 mg, 0.050 mmol, 1 mol%) and N-methylaniline (5.4 ⁇ l, specific gravity: 0.99 (20 ° C.), 5 .4 mg, 0.050 mmol, 1 mol%) was taken in the same gas tight syringe and mixed in the syringe. This mixture was added to the previous test tube in several portions so that the internal temperature did not exceed 20 ° C., and the mixture was stirred at 30 ° C. for 20 hours (aging).
- an aqueous hydroxylamine solution (7.55 g, purity: 52% (titrated with 1.0 M hydrochloric acid), 118.8 mmol, 102 mol%) was added thereto so as not to exceed 30 ° C., and the mixture was stirred at 45 ° C. for 20 hours. (Aging).
- the components other than the solvent in the reaction mixture were as follows; 5,5-dimethyl-4,5-dihydroisoxazole (3-a; target product) ): 96%.
- a saturated aqueous sodium hydrogen carbonate solution (12 ml) was added and stirred.
- the resulting mixture was partitioned into organic and aqueous layers. The organic and aqueous layers were separated. The aqueous layer was extracted with a small amount of dichloromethane, and the combined organic layers were concentrated under reduced pressure. The resulting crude product was purified by distillation under reduced pressure to give 5,5-dimethyl-4,5-dihydroisoxazole (3-a, colorless oil, 9.3 g, 93.8 mmol, yield: 81%, Boiling point: 75-77 ° C./50 Torr) was obtained.
- the resulting mixture was partitioned into organic and aqueous layers. The organic and aqueous layers were separated. The aqueous layer was extracted with a small amount of dichloromethane, and the combined organic layers were concentrated under reduced pressure. The resulting crude product was purified by distillation under reduced pressure to give 5,5-dimethyl-4,5-dihydroisoxazole (3-a, colorless oil, 10.1 g, 101.9 mmol, yield: 87%, Boiling point: 75-77 ° C./50 Torr) was obtained.
- Examples 34 and 35 As in Examples 32 and 33 except that the type and amount of the solvent, the type of catalyst, and the stirring conditions (aging conditions) were changed as shown in the table below, 5,5-dimethyl-4, 5-Dihydroisoxazole was prepared. The results are shown in the table below.
- Example 37 Preparation of 5,5-dimethyl-4,5-dihydroisoxazole (3-a) Prenal (10.0 g, purity: 98% (GC area%), 116.5 mmol, 100 mol%) was added to a 50 ml eggplant flask. Thereafter, trifluoroacetic acid (178 ⁇ l, specific gravity: 1.49 (20 ° C.)), 266 mg, 2.33 mmol, 2 mol%) was added under ice cooling.
- Examples 36, 38 and 39 As shown in the table below, 5,5-dimethyl-4,5-dihydroisoxazole was prepared in the same manner as in Example 37 except that the type and amount of the catalyst and the stirring conditions (aging conditions) were changed. Manufactured.
- Example 40 Preparation of 5,5-dimethyl-4,5-dihydroisoxazole (3-a) using hydroxylamine hydrochloride and acid catalyst
- prenal (10.0 g, purity: 98% (GC area%), 116.5 mmol, 100 mol%) was dissolved in dichloromethane (11.7 ml, 0.1 L / mol), and then trifluoroacetic acid (0.89 ml, specific gravity: 1.49 (20 ° C.)), 1. 33 g, 11.7 mmol, 10 mol%) and hydroxylamine hydrochloride (8.26 g, 118.8 mmol, 102 mol%) were added.
- Example 41 Preparation of 5,5-dimethyl-4,5-dihydroisoxazole (3-a) using hydroxylamine hydrochloride and acid-base catalyst Plenal (10.0 g, purity: 98% (GC area%) in a 100 ml eggplant flask , 116.5 mmol, 100 mol%) in dichloromethane (11.7 ml, 0.1 L / mol), trifluoroacetic acid (178 ⁇ l, specific gravity: 1.49 (20 ° C.)), 266 mg, 2 .33 mmol, 2 mol%) and hydroxylamine hydrochloride (7.91 g, 113.9 mmol, 98 mol%) were added.
- Example 42 Preparation of 5,5-dimethyl-4,5-dihydroisoxazole (3-a) using hydroxylamine sulfate and acid catalyst
- prenal (10.0 g, purity: 98% (GC area%), 116.5 mmol, 100 mol%) was dissolved in dichloromethane (11.7 ml, 0.1 L / mol), and then hydroxylamine sulfate (9.75 g, 59.4 mmol, 51 mol%, 102 mol% as hydroxylamine (NH 2 OH)).
- hydroxylamine sulfate 9.75 g, 59.4 mmol, 51 mol%, 102 mol% as hydroxylamine (NH 2 OH)
- the 5,5-disubstituted-4,5-dihydroisoxazole of the formula (3) produced by the method of the present invention is useful as an intermediate for producing pharmaceuticals, agricultural chemicals and the like, especially the herbicide pyroxasulfone.
- generation of by-products and / or waste can be suppressed, and atomic efficiency can be improved.
- the target compound can be produced efficiently by a safe and simple operation. Therefore, the method of the present invention is safe, industrially favorable, economical, environmentally friendly and has high industrial utility value. In short, the present invention has high industrial applicability.
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Abstract
Description
本発明の他の目的は、簡単な操作により、且つ効率的に、目的化合物を製造できる方法を提供することにある。
R1及びR2は、それらが結合している炭素原子と一緒になって、4~6員の炭素環を形成する、〔I-1〕から〔I-64〕のいずれか1項に記載の方法。
R1及びR2は、それらが結合している炭素原子と一緒になって、4~6員の炭素環を形成する、〔I-1〕から〔I-64〕のいずれか1項に記載の方法。
特表2013-512202(特許文献2)に記載の方法では、式(3)の化合物の製造は非水条件で行われる。当該方法の反応中間体であるオキシムは、水の存在下では加水分解してアルデヒドとヒドロキシルアミンに戻ると予想される。更に、水の存在下では、触媒としての酸が希釈されて不活性化されるから、反応は進行し難いと予想される。
実際に、後述の参考例1に示す通り、特許文献2の方法において水が反応系内に存在することは、収率の著しい低下を招く。従って、当業者は、式(3)の化合物の製造において水が存在することは好ましくないと理解する。
非水条件で行われる特許文献2に記載の方法において、ケトンオキシムに代えてヒドロキシルアミンを用いるとすれば、危険性の高い無水ヒドロキシルアミンを用いざるを得ないと考えられる。
しかしながら、本発明者らは、あえてヒドロキシルアミンを水の存在下で使用し反応を行った結果、驚くべきことに、良好な収率で反応が進行することを見出した。すなわち、本発明者らは、特許文献2の示唆にもかかわらず、ヒドロキシルアミンを水の存在下で使用することで、安全かつ効率的に式(3)の化合物が得られることを見出した。
「Me」はメチルを意味する。
「Et」はエチルを意味する。
「Pr」、「n-Pr」及び「Pr-n」はプロピル(すなわち、ノルマルプロピル)を意味する。
「i-Pr」及び「Pr-i」はイソプロピルを意味する。
「Bu」、「n-Bu」及び「Bu-n」はブチル(すなわち、ノルマルブチル)を意味する。
「s-Bu」及び「Bu-s」はsec-ブチルを意味する。
「i-Bu」及び「Bu-i」はイソブチルを意味する。
「t-Bu」及び「Bu-t」はtert-ブチルを意味する。
「Pen」、「n-Pen」及び「Pen-n」はペンチル(すなわち、ノルマルペンチル)を意味する。
「Hex」、「n-Hex」及び「Hex-n」はヘキシル(すなわち、ノルマルヘキシル)を意味する。
「Dec」、「n-Dec」及び「Dec-n」はデシル(すなわち、ノルマルデシル)を意味する。
「c-Pr」及び「Pr-c」はシクロプロピルを意味する。
「c-Bu」及び「Bu-c」はシクロブチルを意味する。
「c-Pen」及び「Pen-c」はシクロペンチルを意味する。
「c-Hex」及び「Hex-c」はシクロヘキシルを意味する。
「Ph」はフェニルを意味する。
「Bn」はベンジルを意味する。
「Ts」はトシル(4-CH3-C6H4SO2-)を意味する。
「Tf」はトリフルオロメチルスルホニル(CF3SO2-)を意味する。
「Ac」は、アセチル(CH3CO-)を意味する。
(E)-異性体(anti-異性体)、(Z)-異性体(syn-異性体)及びそれらの混合物が本発明の範囲に含まれる。
式(1)の化合物の具体的な例は、以下を含むが、これらに限定されない;3-メチル-2-ブテン-1-アール(3-methyl-2-butene-1-al)(3-メチル-2-ブテン-1-アールは3-メチル-2-ブテナール、3-メチルブタ-2-エナール(3-methylbut-2-enal)又はプレナール(prenal)とも言う)、3-メチル-2-ペンテン-1-アール、3-エチル-2-ペンテン-1-アール、3,4-ジメチル-2-ペンテン-1-アール、3,4,4-トリメチル-2-ペンテン-1-アール、4-クロロ-3-メチル-2-ブテン-1-アール、4,4,4-トリフルオロ-3-メチル-2-ブテン-1-アール、3-シクロプロピル-2-ブテン-1-アール、2-シクロブチリデンアセトアルデヒド、2-シクロペンチリデンアセトアルデヒド、2-シクロヘキシリデンアセトアルデヒド、3-メチル-2-ヘプテン-1-アール、3,7-ジメチル-2,6-オクタジエン-1-アール、3,7-ジメチル-2-オクタン-1-アール、2-(9H-フルオレン-9-イリデン)アセトアルデヒド、3,3-ジフェニル-2-プロペン-1-アール、3,3-ビス(4-フェニル)-2-プロペン-1-アール、3,3-ビス(4-メトキシフェニル)-2-プロペン-1-アール、3,3-ビス(4-メトキシフェニル)-2-プロペン-1-アール、3-フェニル-2-ブテン-1-アール、3-(4-メチルフェニル)-2-ブテン-1-アール、3-(4-メトキシフェニル)-2-ブテン-1-アール、3-(4-クロロフェニル)-2-ブテン-1-アール等。生成物の有用性等の観点から、式(1)の化合物の好ましい具体的な例は、3-メチル-2-ブテン-1-アールである。
本発明の生成物は、原料として用いた式(1)の化合物に相当する5,5-ジ置換-4,5-ジヒドロイソオキサゾールである。式(3)の化合物の具体的な例は、以下を含むが、これらに限定されない;5,5-ジメチル-4,5-ジヒドロイソオキサゾール、5-エチル-5-メチル-4,5-ジヒドロイソオキサゾール、5,5-ジエチル-4,5-ジヒドロイソオキサゾール、5-イソプロピル-5-メチル-4,5-ジヒドロイソオキサゾール、5-(tert-ブチル)-5-メチル-4,5-ジヒドロイソオキサゾール、5-(クロロメチル)-5-メチル-4,5-ジヒドロイソオキサゾール、5-メチル-5-(トリフルオロメチル)-4,5-ジヒドロイソオキサゾール、5-シクロプロピル-5-メチル-4,5-ジヒドロイソオキサゾール、5-オキサ-6-アザスピロ[3.4]オクタ-6-エン、1-メチル-2-メチル[4.4]ノナ-2-エン、1-メチル-2-メチル[4.5]デカ-2-エン、5-ブチル-5-メチル-4,5-ジヒドロイソオキサゾール、5-メチル-5-(4-メチルペンタ-3-エン-1-イル)-4,5-ジヒドロイソオキサゾール、5-メチル-5-(4-メチルペンチル)-4,5-ジヒドロイソオキサゾール、4’H-スピロ[フルオレン-9,5’-イソオキサゾール]、5,5-ジフェニル-4,5-ジヒドロイソオキサゾール、5,5-ビス(4-メチルフェニル)-4,5-ジヒドロイソオキサゾール、5,5-ビス(4-メトキシフェニル)-4,5-ジヒドロイソオキサゾール、5,5-ビス(4-クロロフェニル)-4,5-ジヒドロイソオキサゾール、5-メチル-5-フェニル-4,5-ジヒドロイソオキサゾール、5-エチル-5-フェニル-4,5-ジヒドロイソオキサゾール、5-(4-メチルフェニル)-5-メチル-4,5-ジヒドロイソオキサゾール、5-(4-メトキシフェニル)-5-メチル-4,5-ジヒドロイソオキサゾール、5-(4-クロロフェニル)-5-メチル-4,5-ジヒドロイソオキサゾール等。生成物の有用性等の観点から、式(3)の化合物の好ましい具体的な例は、5,5-ジメチル-4,5-ジヒドロイソオキサゾールである。
本発明で使用されるヒドロキシルアミンは、反応が進行し且つ安全が確保される限りは、特に限定されない。ヒドロキシルアミンの例は、ヒドロキシルアミン(フリー)及びその塩を含むが、これらに限定されない。ヒドロキシルアミン(フリー)の例は、50%ヒドロキシルアミン水溶液、60%ヒドロキシルアミン水溶液、70%ヒドロキシルアミン水溶液、80%ヒドロキシルアミン水溶液、90%ヒドロキシルアミン水溶液等を含むが、これらに限定されない。一般的に「50%ヒドロキシルアミン水溶液(50% hydroxylamine aqueous solution)」は「ヒドロキシルアミン(50%水溶液)(Hydroxylamine (50% solution in water))」とも言う。ヒドロキシルアミン塩の例は、塩酸ヒドロキシルアミン、硫酸ヒドロキシルアミン、硝酸ヒドロキシルアミン(例えば、50%水溶液)、炭酸ヒドロキシルアミン、リン酸ヒドロキシルアミン、酢酸ヒドロキシルアミン、シュウ酸ヒドロキシルアミン等を含むが、これらに限定されない。
一つの態様では、式(1)の化合物1モルに対して、ヒドロキシルアミン(NH2OH)として、0.9~2.0モル、好ましくは0.9~1.5モル、より好ましくは0.9~1.2モル、更に好ましくは、0.9~1.1モルの範囲を例示できる。
別の態様では、式(1)の化合物1モルに対して、ヒドロキシルアミン(NH2OH)として、1.0~2.0モル、好ましくは1.0~1.5モル、より好ましくは1.0~1.2モル、更に好ましくは、1.0~1.1モルの範囲もまた例示できる。
更に別の態様では、式(1)の化合物1モルに対して、ヒドロキシルアミン(NH2OH)として、0.90モル以上1.00モル未満、好ましくは0.90モル以上0.99モル以下、より好ましくは0.90モル以上0.98モル以下、更に好ましくは0.93モル以上0.97モル以下の範囲もまた例示できる。
反応の円滑な進行、安全性等の観点から、本発明の反応は溶媒の存在下で実施することが好ましい。溶媒は、本発明の反応が進行し且つ安全が確保される限りは、いずれの溶媒でもよい。溶媒の例は、水、アルコール類(例えば、メタノール、エタノール、2-プロパノール、ブタノール、tert-ブタノール(tert-ブタノールはtert-ブチルアルコールとも言う)等)、エーテル類(例えば、テトラヒドロフラン(THF)、1,4-ジオキサン、ジイソプロピルエーテル、ジブチルエーテル、ジ-tert-ブチルエーテル、シクロペンチルメチルエーテル(CPME)、メチル-tert-ブチルエーテル、1,2-ジメトキシエタン(DME)、ジグリム(diglyme)、トリグリム(triglyme)等)、ニトリル類(例えば、アセトニトリル等)、アミド類(例えば、N,N-ジメチルホルムアミド(DMF)、N,N-ジメチルアセトアミド(DMAC)、N-メチルピロリドン(NMP)等)、アルキル尿素類(例えば、N,N’-ジメチルイミダゾリジノン(DMI)等)、スルホキシド類(例えば、ジメチルスルホキシド(DMSO)等)、スルホン類(例えば、スルホラン等)、カルボン酸エステル類(例えば、酢酸エチル、酢酸ブチル等)、芳香族炭化水素誘導体類(例えば、ベンゼン、トルエン、キシレン、クロロベンゼン、ジクロロベンゼン、ニトロベンゼン等)、ハロゲン化脂肪族炭化水素類(例えば、ジクロロメタン、クロロホルム、1,2-ジクロロエタン(EDC)等)、脂肪族炭化水素類(例えば、ヘキサン、へプタン、オクタン、シクロヘキサン、エチルシクロヘキサン等)及び任意の割合のそれらの任意の組み合わせを含むが、これらに限定されない。しかしながら、ヒドロキシルアミンを用いる安全性の観点から、本発明の反応は水の存在下で行うことが好ましい。なお、いずれの場合も、反応が進行する限りは、溶媒は単層でも2層に分離してもよい。
一つの態様では、水の量は、例えば、式(1)の化合物1モルに対して、50mol%以上、好ましくは100mol%以上、より好ましくは150mol%以上、更に好ましくは180mol%以上である。
別の態様では、50mol%~6000mol%、好ましくは50mol%~3000mol%、より好ましくは50mol%~1500mol%、更に好ましくは50mol%~1000mol%、更に好ましくは50mol%~800mol%、更に好ましくは50mol%~500mol%、更に好ましくは50mol%~400mol%、更に好ましくは50mol%~350mol%である。
更に別の態様では、100mol%~6000mol%、好ましくは100mol%~3000mol%、より好ましくは100mol%~1500mol%、更に好ましくは100mol%~1000mol%、更に好ましくは100mol%~800mol%、更に好ましくは100mol%~500mol%、更に好ましくは100mol%~400mol%、更に好ましくは100mol%~350mol%である。
更に別の態様では、150mol%~6000mol%、好ましくは150mol%~3000mol%、より好ましくは150mol%~1500mol%、更に好ましくは150mol%~1000mol%、更に好ましくは150mol%~800mol%、更に好ましくは150mol%~500mol%、更に好ましくは150mol%~400mol%、更に好ましくは150mol%~350mol%である。
更に別の態様では、180mol%~6000mol%、好ましくは180mol%~3000mol%、より好ましくは180mol%~1500mol%、更に好ましくは180mol%~1000mol%、更に好ましくは180mol%~800mol%、更に好ましくは180mol%~500mol%、更に好ましくは180mol%~400mol%、更に好ましくは180mol%~350mol%である。
反応温度は、特に制限されない。収率、副生成物抑制、経済効率等の観点から、-30℃(マイナス30℃)~160℃、好ましくは0℃~80℃、より好ましくは20℃~80℃、更に好ましくは20℃~60℃、更に好ましくは30℃~50℃の範囲を例示できる。
触媒に酸塩基触媒を用いる様態では、実施例から理解されるように、比較的低温(例えば、20~40℃)でも満足に反応進行するという更なる利点がある。
しかし、本発明の反応温度は、これらの温度範囲に限定されない。
反応時間は、特に制限されない。収率、副生成物抑制、経済効率等の観点から、0.5時間~96時間、好ましくは1時間~50時間、より好ましくは6時間~50時間、更に好ましくは6時間~24時間の範囲を例示できる。
反応の円滑な進行等の観点から、本発明の反応は触媒の存在下で行われる。本発明で使用される触媒は、好ましくは、酸触媒又は酸塩基触媒である。
本発明の一つの様態では、酸触媒の存在下で式(3)の化合物を製造する。酸触媒は、反応が進行する限りは、いずれの酸触媒でもよい。加えて、反応が進行する限りは、以下のいずれの形態が使用されてもよく、本発明の範囲に含まれる。酸触媒として、遊離の酸を使用できる。酸触媒は部分的な塩の形態で使用してもよい。酸触媒が部分的な塩の場合は、酸触媒は単塩でもよく、複塩でもよい。酸触媒は無水物の形態で使用してもよい。酸触媒は水和物の形態で使用してもよい。酸触媒は二量体、三量体又はより高次の多量体の形態で使用してもよい。
酸触媒として、鉱酸を使用することができる。鉱酸の具体的な例は、塩酸、硫酸、硝酸を含むが、これらに限定されない。
酸触媒として、カルボン酸を使用することができる。反応が進行する限りは、カルボン酸は、遊離の酸として使用してもよく、又はその無水物として使用してもよい。
酸触媒として、スルホン酸を使用することができる。反応が進行する限りは、スルホン酸は、遊離の酸として使用してもよく、又はその無水物として使用してもよい。スルホン酸の具体的な例は、メタンスルホン酸、トリフルオロメタンスルホン酸(TfOH)、ベンゼンスルホン酸、p-トルエンスルホン酸(TsOH)及び10-カンファースルホン酸(CSA)を含む。本明細書中、「p-トルエンスルホン酸(TsOH)」は「p-トルエンスルホン酸一水和物(TsOH・H2O)」を含む。スルホン酸無水物の具体的な例は、無水メタンスルホン酸及び無水トリフルオロメタンスルホン酸を含む。
酸触媒として、リン酸類及びその誘導体を使用することができる。それらが化学的に許容され、本発明の効果を示す限りは、リン酸類及びその誘導体は特に制限されない。リン酸類及びその誘導体の例は以下を含むが、これらに限定されない。
反応が進行する限りは、リン酸は、遊離の酸として使用してもよく、又はその分子中の1以上のOH基が部分的に塩を形成していてもよい。加えて、リン酸はその無水物等であってもよい。リン酸類の具体的な例は、リン酸(オルトリン酸;H3PO4)、リン酸二水素アンモニウム、ポリリン酸、ピロリン酸(二リン酸)及び五酸化二リンを含む。
反応が進行する限りは、リン酸モノエステルは、遊離の酸として使用してもよく、又はその分子中の1以上のOH基が部分的に塩を形成していてもよい。リン酸モノエステルは、それが化学的に許容される限りは、その無水物として使用してもよい。リン酸モノエステル類の具体的な例は、リン酸エチル(すなわち、リン酸二水素エチル;(C2H5O)P(=O)(OH)2)及びリン酸フェニル(すなわち、リン酸二水素フェニル;(C6H5O)P(=O)(OH)2)を含む。
反応が進行する限りは、リン酸ジエステルは、遊離の酸として使用してもよく、又はそれが化学的に許容される限りは、その無水物として使用してもよい。リン酸ジエステル類の具体的な例は、リン酸ジエチル(すなわち、リン酸水素ジエチル;(C2H5O)2P(=O)OH)及びリン酸ジフェニル(すなわち、リン酸水素ジフェニル;(C6H5O)2P(=O)OH)を含む。
酸触媒として、固体酸を使用することができる。
酸触媒として、ヘテロポリ酸の塩も使用することができる。ヘテロポリ酸の塩の具体的な例は、12モリブド(VI)リン酸ナトリウムn水和物(sodium 12-molybdo(VI)phosphate n-hydrate;Na3[PMo12O40]・nH2O(n≒30))等を含むが、これに限定されない。12モリブド(VI)リン酸ナトリウムn水和物はリンモリブデン酸ナトリウムn水和物(sodium phsophomolybdate n-hydrate)とも言う。
鉱酸類、カルボン酸類、スルホン酸類及びリン酸類からなる群より選ばれる1個以上(好ましくは1~3個、より好ましくは1又2個、更に好ましくは1個)の酸が好ましい。
鉱酸類、カルボン酸類及びスルホン酸類からなる群より選ばれる1個以上(好ましくは1~3個、より好ましくは1又2個、更に好ましくは1個)の酸がより好ましい。
上記と同様の観点から、酸触媒の好ましい具体的な例は、以下の通りであるが、これらに限定されない。
塩酸、硫酸、硝酸、トリフルオロ酢酸、トリクロロ酢酸、ジクロロ酢酸、マレイン酸、無水マレイン酸、メタンスルホン酸、トリフルオロメタンスルホン酸、ベンゼンスルホン酸、p-トルエンスルホン酸、10-カンファースルホン酸、リン酸、リン酸エチル、リン酸フェニル、リン酸ジエチル及びリン酸ジフェニルからなる群より選ばれる1個以上(好ましくは1~3個、より好ましくは1又2個、更に好ましくは1個)の酸が好ましい。
硝酸、トリフルオロ酢酸、トリクロロ酢酸、ジクロロ酢酸、マレイン酸、無水マレイン酸、メタンスルホン酸、トリフルオロメタンスルホン酸、ベンゼンスルホン酸、p-トルエンスルホン酸、10-カンファースルホン酸及びリン酸ジフェニルからなる群より選ばれる1個以上(好ましくは1~3個、より好ましくは1又2個、更に好ましくは1個)の酸がより好ましい。
硝酸、トリフルオロ酢酸、トリクロロ酢酸、ジクロロ酢酸、マレイン酸、無水マレイン酸、メタンスルホン酸、トリフルオロメタンスルホン酸、ベンゼンスルホン酸及びp-トルエンスルホン酸からなる群より選ばれる1個以上(好ましくは1~3個、より好ましくは1又2個、更に好ましくは1個)の酸が更に好ましい。
硝酸、トリフルオロ酢酸、トリクロロ酢酸、マレイン酸、無水マレイン酸、ベンゼンスルホン酸及びp-トルエンスルホン酸からなる群より選ばれる1個以上(好ましくは1~3個、より好ましくは1又2個、更に好ましくは1個)の酸が更に好ましい。
硝酸、トリフルオロ酢酸、トリクロロ酢酸、マレイン酸、無水マレイン酸及びp-トルエンスルホン酸からなる群より選ばれる1個以上(好ましくは1~3個、より好ましくは1又2個、更に好ましくは1個)の酸が更に好ましい。
硝酸、トリフルオロ酢酸、マレイン酸、無水マレイン酸及びp-トルエンスルホン酸からなる群より選ばれる1個以上(好ましくは1~3個、より好ましくは1又2個、更に好ましくは1個)の酸が更に好ましい。
硝酸、トリフルオロ酢酸、マレイン酸及びp-トルエンスルホン酸からなる群より選ばれる1個以上(好ましくは1~3個、より好ましくは1又2個、更に好ましくは1個)の酸が更に好ましい。
硝酸、トリフルオロ酢酸、マレイン酸及び無水マレイン酸からなる群より選ばれる1個以上(好ましくは1~3個、より好ましくは1又2個、更に好ましくは1個)の酸もまた更に好ましい。
トリフルオロ酢酸、マレイン酸及び無水マレイン酸からなる群より選ばれる1~3個、(好ましくは1又2個、より好ましくは1個)の酸が更に好ましい。
トリフルオロ酢酸及びマレイン酸からなる群より選ばれる1又2個(好ましくは1個)の酸が更に好ましい。
トリフルオロ酢酸が更に好ましい。
本発明の別の様態では、酸塩基触媒の存在下で式(3)の化合物を製造する。酸塩基触媒は、酸と塩基の混合物である。酸塩基触媒は、反応が進行する限りは、いずれの酸塩基触媒でもよい。加えて、反応が進行する限りは、いずれの形態が使用されてもよく、本発明の範囲に含まれる。
酸塩基触媒が塩の場合は、酸塩基触媒は単塩でもよく、複塩でもよい。酸塩基触媒は無水物の形態で使用してもよい。酸塩基触媒は水和物の形態で使用してもよい。酸塩基触媒の酸及び/又は塩基は二量体等の形態で使用してもよい。
鉱酸類、カルボン酸類、スルホン酸類及びリン酸類からなる群より選ばれる1個以上(好ましくは1~3個、より好ましくは1又2個、更に好ましくは1個)の酸が好ましい。
鉱酸類、カルボン酸類及びスルホン酸類からなる群より選ばれる1個以上(好ましくは1~3個、より好ましくは1又2個、更に好ましくは1個)の酸が好ましい。
鉱酸類及びカルボン酸類からなる群より選ばれる1個以上(好ましくは1~3個、より好ましくは1又2個、更に好ましくは1個)の酸がより好ましい。
上記と同様の観点から、酸塩基触媒の酸の好ましい具体的な例は、以下の通りであるが、これらに限定されない。
塩酸、硫酸、硝酸、トリフルオロ酢酸、トリクロロ酢酸、ジクロロ酢酸、マレイン酸、無水マレイン酸、メタンスルホン酸、トリフルオロメタンスルホン酸、ベンゼンスルホン酸、p-トルエンスルホン酸、10-カンファースルホン酸、リン酸、リン酸エチル、リン酸フェニル、リン酸ジエチル及びリン酸ジフェニルからなる群より選ばれる1個以上(好ましくは1~3個、より好ましくは1又2個、更に好ましくは1個)の酸が好ましい。
硝酸、トリフルオロ酢酸、トリクロロ酢酸、ジクロロ酢酸、マレイン酸、無水マレイン酸、メタンスルホン酸、トリフルオロメタンスルホン酸、ベンゼンスルホン酸、p-トルエンスルホン酸、10-カンファースルホン酸及びリン酸ジフェニルからなる群より選ばれる1個以上(好ましくは1~3個、より好ましくは1又2個、更に好ましくは1個)の酸がより好ましい。
硝酸、トリフルオロ酢酸、トリクロロ酢酸、ジクロロ酢酸、マレイン酸、無水マレイン酸、メタンスルホン酸、トリフルオロメタンスルホン酸、ベンゼンスルホン酸及びp-トルエンスルホン酸からなる群より選ばれる1個以上(好ましくは1~3個、より好ましくは1又2個、更に好ましくは1個)の酸が更に好ましい。
硝酸、トリフルオロ酢酸、トリクロロ酢酸、マレイン酸、無水マレイン酸、ベンゼンスルホン酸及びp-トルエンスルホン酸からなる群より選ばれる1個以上(好ましくは1~3個、より好ましくは1又2個、更に好ましくは1個)の酸が更に好ましい。
硝酸、トリフルオロ酢酸、トリクロロ酢酸、マレイン酸、無水マレイン酸及びp-トルエンスルホン酸からなる群より選ばれる1個以上(好ましくは1~3個、より好ましくは1又2個、更に好ましくは1個)の酸が更に好ましい。
硝酸、トリフルオロ酢酸、マレイン酸、無水マレイン酸及びp-トルエンスルホン酸からなる群より選ばれる1個以上(好ましくは1~3個、より好ましくは1又2個、更に好ましくは1個)の酸が更に好ましい。
硝酸、トリフルオロ酢酸、マレイン酸及びp-トルエンスルホン酸からなる群より選ばれる1個以上(好ましくは1~3個、より好ましくは1又2個、更に好ましくは1個)の酸が更に好ましい。
硝酸、トリフルオロ酢酸、マレイン酸及び無水マレイン酸からなる群より選ばれる1個以上(好ましくは1~3個、より好ましくは1又2個、更に好ましくは1個)の酸もまた更に好ましい。
硝酸、トリフルオロ酢酸及びマレイン酸からなる群より選ばれる1~3個(好ましくは1又2個、更に好ましくは1個)の酸が更に好ましい。
トリフルオロ酢酸、マレイン酸及び無水マレイン酸からなる群より選ばれる1~3個、(好ましくは1又2個、より好ましくは1個)の酸もまた更に好ましい。
トリフルオロ酢酸及びマレイン酸からなる群より選ばれる1又2個(好ましくは1個)の酸が更に好ましい。
トリフルオロ酢酸が更に好ましい。
の第1級アミン、第2級アミン、第3級アミン、又は複素環式アミンであってよい。
酸塩基触媒の酸の使用量は、収率、副生成物抑制、経済効率等の観点から、式(1)の化合物1モルに対して、0.001~1.00モル、好ましくは0.005~0.30モル、0.005~0.10モル、より好ましくは0.01~0.10モル、0.01~0.05モルの範囲を例示できる。
酸塩基触媒の塩基の使用量は、収率、副生成物抑制、経済効率等の観点から、式(1)の化合物1モルに対して、0.001~1.00モル、好ましくは0.005~0.30モル、0.005~0.10モル、より好ましくは0.01~0.10モル、0.01~0.05モルの範囲を例示できる。
機器:JEOL JMN-ECS-300又はJEOL JMN-Lambda-400(JEOL RESONANCE製)、溶媒:CDCl3及び/又はDMSO-d6、内部基準物質:テトラメチルシラン(TMS)及びその他。
1H-NMRと同様の機器、溶媒及び基準物質で13C-NMRを測定した。
GC-2025(株式会社島津製作所製)、検出方法:FID
文献(a):(社)日本化学会編、「新実験化学講座9 分析化学 II」、第60~86頁(1977年)、発行者 飯泉新吾、丸善株式会社(例えば、カラムに使用可能な固定相液体に関しては、第66頁を参照できる。)
文献(b):(社)日本化学会編、「実験化学講座20-1 分析化学」第5版、第121~129頁(2007年)、発行者 村田誠四郎、丸善株式会社(例えば、中空キャピラリー分離カラムの具体的な使用方法に関しては、第124~125頁を参照できる。)
分析装置:6890N Network GC System(Agilent Technologies製)、質量検出器:5973N MSD(Agilent Technologies製)
酸触媒を用いた5,5-ジメチル-4,5-ジヒドロイソオキサゾール(3-a)の製造
下記の表に示すようにヒドロキシルアミン(NH2OH)の量、酸の種類及び量、並びに撹拌条件(熟成条件)を変更したことを除いては実施例1と同様にして、5,5-ジメチル-4,5-ジヒドロイソオキサゾールを製造した。
反応混合物のGC分析(面積百分率)の結果、反応混合物中の溶媒等を除く成分は、(1-a;原料)及び(3-a;目的生成物)のほか、(2-a;中間体)、(9-1-a;二量体中間体のアルデヒド誘導体)及び(9-2-a;二量体中間体のオキシム誘導体)が検出された。なお、本発明において、GC、GC-MS及び1H NMRなどの分析により、(1-a;原料)、(3-a;目的生成物)、(2-a;中間体)、(9-1-a;二量体中間体のアルデヒド誘導体)及び(9-2-a;二量体中間体のオキシム誘導体)は同定された。
TFA:トリフルオロ酢酸
TsOH:p-トルエンスルホン酸一水和物
有機溶媒を含む溶媒中での、酸触媒を用いた5,5-ジメチル-4,5-ジヒドロイソオキサゾール(3-a)の製造
10mlフタ付き試験管にプレナール(478μl,比重:0.879(20℃),421mg,純度:98%(GC面積%),4.9mmol,100mol%)をマイクロシリンジで加えた。そこにジクロロメタン(0.5ml,0.1L/mol)とトリフルオロ酢酸(38μl,比重:1.49(20℃),58mg,0.5mmol,10mol%)を加えた。氷冷下、30℃を超えないようにヒドロキシルアミン水溶液(282μl,比重:1.122(20℃),316mg,純度:52%(1.0M塩酸で滴定),4.98mmol,102mol%)を加え、50℃で20時間撹拌した(熟成)。反応混合物をGC(面積百分率)により分析した。
下記の表に示すように溶媒の種類及び量、ヒドロキシルアミン(NH2OH)の量、酸触媒の種類及び量、並びに撹拌条件(熟成条件)を変更したことを除いては実施例12と同様にして、5,5-ジメチル-4,5-ジヒドロイソオキサゾールを製造した。
TFA:トリフルオロ酢酸
CH2Cl2:ジクロロメタン
CH3CN:アセトニトリル
t-BuOH:tert-ブタノール
酸塩基触媒を用いた5,5-ジメチル-4,5-ジヒドロイソオキサゾール(3-a)の製造
10mlフタ付き試験管にプレナール(478μl,比重:0.879(20℃),421mg,純度:98%(GC面積%),4.9mmol,100mol%)をマイクロシリンジで加えた。そこにトリフルオロ酢酸(19μl,比重:1.49(20℃),29mg,0.25mmol,5mol%,)を加えた。氷冷下、30℃を超えないようにヒドロキシルアミン水溶液(268μl,比重:1.122(20℃),301mg,純度:52%(1.0M塩酸で滴定),4.73mmol,97mol%)を加えた後、N-メチルアニリン(27μl,比重:0.99(20℃),27mg,0.25mmol,5mol%)を加え、30℃で20時間撹拌した(熟成)。反応混合物をGC(面積百分率)により分析した。
下記の表に示すようにヒドロキシルアミン(NH2OH)の量、酸の種類及び量、塩基の種類及び量、並びに撹拌条件(熟成条件)を変更したことを除いては実施例16と同様にして、5,5-ジメチル-4,5-ジヒドロイソオキサゾールを製造した。
下記の表に示すようにヒドロキシルアミン(NH2OH)の量、塩基の種類及び量、並びに撹拌条件(熟成条件)を変更し、酸を加えないことを除いては実施例16と同様にして、5,5-ジメチル-4,5-ジヒドロイソオキサゾールの製造を試みた。
TFA:トリフルオロ酢酸
PhNHMe:N-メチルアニリン
TsOH:p-トルエンスルホン酸一水和物
実施例7~11の結果は、本発明の酸触媒として様々な酸が利用可能であることを示している。
実施例12~15は有機溶媒を含む溶媒中で、酸触媒を使用した例である。様々な有機溶媒の存在下で良好な収率が得られた。
実施例16~25は酸塩基触媒を使用した例である。同量の(等モルの)プレナールとヒドロキシルアミンを用いた実施例17においても良好な収率が得られた。特に、プレナール過剰の条件で反応させた実施例16、18~23は更に優れた収率を得られた。
実施例26~31の結果は、本発明の酸塩基触媒として様々な酸及び塩基が利用可能であることを示している。
比較例1は酸触媒なしで反応を試みた例である。酸触媒なしでは反応はほとんど進行しなかった。
5,5-ジメチル-4,5-ジヒドロイソオキサゾール(3-a)の製造
10mlフタ付き試験管にアセトンオキシム(326mg,4.45mmol,91mol%)とプレナール(478μl,比重:0.879(20℃),421mg,純度:98%(GC面積%),4.90mmol,100mol%)を加えた。そこに水(147mg,比重:1.00,147μl,8.17mmol,167mol%)を加えて、氷冷した。トリフルオロ酢酸(3.8μl,比重:1.49(20℃),5.7mg,0.050mmol,1mol%)とN-メチルアニリン(5.4μl,比重:0.99(20℃),5.4mg,0.050mmol,1mol%)を同一ガスタイトシリンジに取り、シリンジ内で混合した。先の試験管にこの混合物を、内温が20℃を超えないように少しずつ何回かに分けて添加し、30℃で20時間撹拌した(熟成)。反応混合物のGC分析(面積百分率)の結果、反応混合物中の溶媒等を除く主な成分は次の通りであった;5,5-ジメチル-4,5-ジヒドロイソオキサゾール(3-a;目的生成物):37%,プレナール(1-a;原料):29%,アセトンオキシム(原料):17%。
参考例1の結果は、明らかに低い収率を示した。この結果は、特許文献2に記載から予想される通り、特許文献2の方法においては水の存在がオキシム化及び/又は環化の妨げとなることを示している。
なお、酸触媒反応と酸塩基触媒反応とでは反応途中で検出された反応中間体類の挙動に差があったが、実施例1~31の上表に示すように、反応完結後には酸触媒でも酸塩基触媒でも本発明の所望の効果が得られた。
一方で、本発明のヒドロキシルアミンを用いた方法では、水の存在下の反応にもかかわらず良好な収率が得られており、本発明の方法は特許文献2に記載の方法とは異質な反応によるものであることが示唆される。
5,5-ジメチル-4,5-ジヒドロイソオキサゾール(3-a)の製造
50mlナスフラスコ中でプレナール(10.0g,純度:98%(GC面積%),116.5mmol,100mol%)をジクロロメタン(11.7ml,0.1L/mol)に溶解した後、氷冷下でトリフルオロ酢酸(0.89ml,比重:1.49(20℃)),1.33g,11.7mmol,10mol%)を加えた。氷冷下、そこに30℃を超えないようにヒドロキシルアミン水溶液(7.55g,純度:52%(1.0M塩酸で滴定),118.8mmol,102mol%)を加え、45℃で20時間撹拌した(熟成)。反応混合物のGC分析(面積百分率)の結果、反応混合物中の溶媒等を除く成分は次の通りであった;5,5-ジメチル-4,5-ジヒドロイソオキサゾール(3-a;目的生成物):96%。
反応終了後、飽和炭酸水素ナトリウム水溶液(12ml)を加えて、撹拌した。得られた混合物を有機層と水層に分配した。有機層と水層を分離した。水層を少量のジクロロメタンで抽出し、合わせた有機層を減圧下で濃縮した。得られた粗生成物を減圧蒸留により精製して、5,5-ジメチル-4,5-ジヒドロイソオキサゾール(3-a,無色油状物,9.3g,93.8mmol,収率:81%,沸点:75~77℃/50Torr)を得た。
5,5-ジメチル-4,5-ジヒドロイソオキサゾール(3-a)の製造
50mlナスフラスコ中でプレナール(10.0g,純度:98%(GC面積%),116.5mmol,100mol%)をジクロロメタン(11.7ml,0.1L/mol)に溶解した後、氷冷下でマレイン酸(1.35g,11.7mmol,10mol%)を加えた。氷冷下、そこに30℃を超えないようにヒドロキシルアミン水溶液(7.55g,純度:52%(1.0M塩酸で滴定),118.8mmol,102mol%)を加え、45℃で24時間撹拌した(熟成)。反応混合物のGC分析(面積百分率)の結果、反応混合物中の溶媒等を除く成分は次の通りであった;5,5-ジメチル-4,5-ジヒドロイソオキサゾール(3-a;目的生成物):97%。
反応終了後、飽和炭酸水素ナトリウム水溶液(12ml)を加えて、撹拌した。得られた混合物を有機層と水層に分配した。有機層と水層を分離した。水層を少量のジクロロメタンで抽出し、合わせた有機層を減圧下で濃縮した。得られた粗生成物を減圧蒸留により精製して、5,5-ジメチル-4,5-ジヒドロイソオキサゾール(3-a,無色油状物,10.1g,101.9mmol,収率:87%,沸点:75~77℃/50Torr)を得た。
後述の表に示すように溶媒の種類及び量、触媒の種類、並びに撹拌条件(熟成条件)を変更したことを除いては実施例32及び33と同様にして、5,5-ジメチル-4,5-ジヒドロイソオキサゾールを製造した。結果は後述の表に示す。
5,5-ジメチル-4,5-ジヒドロイソオキサゾール(3-a)の製造
50mlナスフラスコにプレナール(10.0g,純度:98%(GC面積%),116.5mmol,100mol%)を加えた後、氷冷下でトリフルオロ酢酸(178μl,比重:1.49(20℃)),266mg,2.33mmol,2mol%)を加えた。氷冷下、そこに30℃を超えないようにヒドロキシルアミン水溶液(7.25g,純度:52%(1.0M塩酸で滴定),114.2mmol,98mol%)を加えた後、N-メチルアニリン(252μl,比重:0.99(20℃),250mg,2.33mmol,2mol%,)を加え、30℃で24時間撹拌した(熟成)。反応混合物のGC分析(面積百分率)の結果、反応混合物中の溶媒等を除く成分は次の通りであった;5,5-ジメチル-4,5-ジヒドロイソオキサゾール(3-a;目的生成物):96%。
反応終了後、ジクロロメタン(12ml)と飽和炭酸水素ナトリウム水溶液(12ml)を加えて、撹拌した。得られた混合物を有機層と水層に分配した。有機層と水層を分離した。水層を少量のジクロロメタンで抽出し、合わせた有機層を減圧下で濃縮した。得られた粗生成物を減圧蒸留により精製して、5,5-ジメチル-4,5-ジヒドロイソオキサゾール(3-a,無色油状物,9.7g,97.9mmol,収率:84%,沸点:75~77℃/50Torr)を得た。
1H-NMR(400MHz,CDCl3)δ(ppm,TMS基準):1.40(s,6H),2.75(d,J=1.9Hz,2H),7.06(s,1H).
13C-NMR(100MHz,CDCl3)δ(ppm):27.0,47.3,82.2,146.2.
沸点:154.9℃/1atm(TG-DTA:熱重量-示差熱同時分析)。TG-DTAには次の機器を用いた。機器:DSC3100S(MAC Science Co.,Ltd.製)。
下記の表に示すように、触媒の種類及び量、並びに撹拌条件(熟成条件)を変更したことを除いては実施例37と同様にして、5,5-ジメチル-4,5-ジヒドロイソオキサゾールを製造した。
TFA:トリフルオロ酢酸
PhNHMe:N-メチルアニリン
CH2Cl2:ジクロロメタン
塩酸ヒドロキシルアミンと酸触媒を用いた5,5-ジメチル-4,5-ジヒドロイソオキサゾール(3-a)の製造
100mlナスフラスコ中でプレナール(10.0g,純度:98%(GC面積%),116.5mmol,100mol%)をジクロロメタン(11.7ml,0.1L/mol)に溶解した後、氷冷下でトリフルオロ酢酸(0.89ml,比重:1.49(20℃)),1.33g,11.7mmol,10mol%)及び塩酸ヒドロキシルアミン(8.26g,118.8mmol,102mol%)を加えた。氷冷下、そこに30℃を超えないように48%水酸化ナトリウム水溶液(9.90g,118.8mmol,102mol%)を加え、45℃で20時間撹拌した(熟成)。反応混合物のGC分析(面積百分率)の結果、反応混合物中の溶媒等を除く成分は次の通りであった;5,5-ジメチル-4,5-ジヒドロイソオキサゾール(3-a;目的生成物):92%。
反応終了後、飽和炭酸水素ナトリウム水溶液(12ml)を加えて、撹拌した。得られた混合物を有機層と水層に分配した。有機層と水層を分離した。水層を少量のジクロロメタンで抽出し、合わせた有機層を減圧下で濃縮した。得られた粗生成物を減圧蒸留により精製して、5,5-ジメチル-4,5-ジヒドロイソオキサゾール(3-a,無色油状物,8.8g,88.6mmol,収率:76%,沸点:75~77℃/50Torr)を得た。
塩酸ヒドロキシルアミンと酸塩基触媒を用いた5,5-ジメチル-4,5-ジヒドロイソオキサゾール(3-a)の製造
100mlナスフラスコ中でプレナール(10.0g,純度:98%(GC面積%),116.5mmol,100mol%)をジクロロメタン(11.7ml,0.1L/mol)に溶解した後、氷冷下でトリフルオロ酢酸(178μl,比重:1.49(20℃)),266mg,2.33mmol,2mol%)、塩酸ヒドロキシルアミン(7.91g,113.9mmol,98mol%)を加えた。氷冷下、そこに30℃を超えないように48%水酸化ナトリウム水溶液(9.49g,113.9mmol,98mol%)を加えた。その後、N-メチルアニリン(252μl,比重:0.99(20℃)),250mg,2.33mmol,2mol%)を加え、30℃で5時間撹拌した。その後、トリフルオロ酢酸(178μl,比重:1.49(20℃),266mg,2.33mmol,2mol%)及びN-メチルアニリン(252μl,比重:0.99(20℃)),250mg,2.33mmol,2mol%)を追加し、30℃で24時間撹拌した(熟成)。反応混合物のGC分析(面積百分率)の結果、反応混合物中の溶媒等を除く成分は次の通りであった;5,5-ジメチル-4,5-ジヒドロイソオキサゾール(3-a;目的生成物):89%。
反応終了後、飽和炭酸水素ナトリウム水溶液(12ml)と水(20ml)を加えて、撹拌した。得られた混合物を有機層と水層に分配した。有機層と水層を分離した。水層を少量のジクロロメタンで抽出し、合わせた有機層を減圧下で濃縮した。得られた粗生成物を減圧蒸留により精製して、5,5-ジメチル-4,5-ジヒドロイソオキサゾール(3-a,無色油状物,8.6g,87.0mmol,収率:75%,沸点:75~77℃/50Torr)を得た。
硫酸ヒドロキシルアミンと酸触媒を用いた5,5-ジメチル-4,5-ジヒドロイソオキサゾール(3-a)の製造
100mlナスフラスコ中でプレナール(10.0g,純度:98%(GC面積%),116.5mmol,100mol%)をジクロロメタン(11.7ml,0.1L/mol)に溶解した後、硫酸ヒドロキシルアミン(9.75g,59.4mmol,51mol%,ヒドロキシルアミン(NH2OH)として102mol%)を加えた。そこに15~25℃で48%水酸化ナトリウム水溶液(9.22g,110.7mmol,95mol%)を加えた後、氷冷下でトリフルオロ酢酸(2.68ml,比重:1.49(20℃),3.99g,34.9mmol,30mol%)を加え、45℃で20時間撹拌した(熟成)。反応混合物のGC分析(面積百分率)の結果、反応混合物中の溶媒等を除く成分は次の通りであった;5,5-ジメチル-4,5-ジヒドロイソオキサゾール(3-a;目的生成物):92%。
反応終了後、飽和炭酸水素ナトリウム水溶液(12ml)を加えて、撹拌した。析出した固形物を除去するため吸引ろ過した。ろ過後得られた混合物を有機層と水層に分配した。有機層と水層を分離した。水層を少量のジクロロメタンで抽出し、有機層を合わせた。1,4-ジフェノキシベンゼンを内部標準として用いるGC分析の結果、5,5-ジメチル-4,5-ジヒドロイソオキサゾール(3-a;目的生成物)の収率は79%であった。
合わせた有機層を減圧下で濃縮した。得られた粗生成物を減圧蒸留により精製して、5,5-ジメチル-4,5-ジヒドロイソオキサゾール(3-a,無色油状物,8.22g,82.9mmol,収率:71%,沸点:75~77℃/50Torr)を得た。
CH2Cl2:ジクロロメタン
NH2OH・HCl:塩酸ヒドロキシルアミン
(HONH2)2・H2SO4:硫酸ヒドロキシルアミン
TFA:トリフルオロ酢酸
PhNHMe:N-メチルアニリン
Claims (22)
- 式(3)の化合物の製造方法であって、式(1)の化合物を、触媒の存在下で、ヒドロキシルアミンと反応させることを含む方法:
- 式(1)の化合物とヒドロキシルアミンとの反応が、水の存在下で行われる、請求項1に記載の方法。
- 式(1)の化合物とヒドロキシルアミンとの反応が、式(1)の化合物1モルに対して100mol%以上の水の存在下で行われる、請求項1に記載の方法。
- 式(1)の化合物とヒドロキシルアミンとの反応が、式(1)の化合物1モルに対して100mol%~1000mol%の水の存在下で行われる、請求項1に記載の方法。
- 触媒が、酸触媒である、請求項1から請求項4のいずれか1項に記載の方法。
- 酸触媒が、鉱酸類、カルボン酸類及びスルホン酸類からなる群より選ばれる1個以上の酸である、請求項5に記載の方法。
- 酸触媒が、硝酸、トリフルオロ酢酸、マレイン酸及びp-トルエンスルホン酸からなる群より選ばれる1個以上の酸である、請求項5に記載の方法。
- 酸触媒が、トリフルオロ酢酸である、請求項5に記載の方法。
- 触媒が、酸塩基触媒である、請求項1から請求項4のいずれか1項に記載の方法。
- 酸塩基触媒の酸が、鉱酸類、カルボン酸類及びスルホン酸類からなる群より選ばれる1個以上の酸である、請求項9に記載の方法。
- 酸塩基触媒の酸が、硝酸、トリフルオロ酢酸、マレイン酸及びp-トルエンスルホン酸からなる群より選ばれる1個以上の酸である、請求項9に記載の方法。
- 酸塩基触媒の酸が、トリフルオロ酢酸である、請求項9に記載の方法。
- 酸塩基触媒の塩基が、N-メチルアニリン、モルホリン及びピロリジンからなる群より選ばれる1個以上の塩基である、請求項9から請求項12のいずれか1項に記載の方法。
- 酸塩基触媒の塩基が、N-メチルアニリンである、請求項9から請求項12のいずれか1項に記載の方法。
- ヒドロキシルアミンがフリーのヒドロキシルアミン水溶液又はヒドロキシルアミン塩である、請求項1から請求項14のいずれか1項に記載の方法。
- ヒドロキシルアミンが45%~55%ヒドロキシルアミン水溶液、塩酸ヒドロキシルアミン又は硫酸ヒドロキシルアミンである、請求項1から請求項14のいずれか1項に記載の方法。
- ヒドロキシルアミンがヒドロキシルアミン塩であり、反応が、さらに中和剤の存在下で行われる、請求項1から請求項14のいずれか1項に記載の方法。
- ヒドロキシルアミンが塩酸ヒドロキシルアミン又は硫酸ヒドロキシルアミンであり、反応が、さらに中和剤の存在下で行われる、請求項1から請求項14のいずれか1項に記載の方法。
- 中和剤が、水酸化ナトリウム、水酸化カリウム、炭酸ナトリウム、炭酸カリウム、炭酸水素ナトリウム、炭酸水素カリウム又はアンモニアである、請求項17又は請求項18に記載の方法。
- 反応が、アセトニトリル、トルエン、キシレン、クロロベンゼン、ジクロロベンゼン及びジクロロメタンから選ばれる1個以上の溶媒、及び水溶媒の存在下で行われる、請求項1から請求項19のいずれか1項に記載の方法。
- 反応が、水とジクロロベンゼンの組み合わせの溶媒の存在下で行われる、請求項1から請求項19のいずれか1項に記載の方法。
- 式(1)の化合物がプレナールであり、式(3)の化合物が5,5-ジメチル-4,5-ジヒドロイソオキサゾールである、請求項1から請求項21のいずれか1項に記載の方法。
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