WO2009110475A1 - 3-アミノ-2-クロロ-6-トリフルオロメチルピリジンの製造方法 - Google Patents
3-アミノ-2-クロロ-6-トリフルオロメチルピリジンの製造方法 Download PDFInfo
- Publication number
- WO2009110475A1 WO2009110475A1 PCT/JP2009/053978 JP2009053978W WO2009110475A1 WO 2009110475 A1 WO2009110475 A1 WO 2009110475A1 JP 2009053978 W JP2009053978 W JP 2009053978W WO 2009110475 A1 WO2009110475 A1 WO 2009110475A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- chloro
- trifluoromethylnicotinamide
- reaction
- trifluoromethylpyridine
- amino
- Prior art date
Links
- QAZZMFLLNSJCLW-UHFFFAOYSA-N 2-chloro-6-(trifluoromethyl)pyridin-3-amine Chemical compound NC1=CC=C(C(F)(F)F)N=C1Cl QAZZMFLLNSJCLW-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- JBTBDGVGPLLRLS-UHFFFAOYSA-N 2-chloro-6-(trifluoromethyl)pyridine-3-carboxamide Chemical compound NC(=O)C1=CC=C(C(F)(F)F)N=C1Cl JBTBDGVGPLLRLS-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000002904 solvent Substances 0.000 claims abstract description 18
- BZMWJLRKOIRLSU-UHFFFAOYSA-N 2-oxo-6-(trifluoromethyl)-1h-pyridine-3-carboxamide Chemical compound NC(=O)C1=CC=C(C(F)(F)F)NC1=O BZMWJLRKOIRLSU-UHFFFAOYSA-N 0.000 claims abstract description 8
- DXRBTBMFFGEVCX-UHFFFAOYSA-N 2-chloro-6-(trifluoromethyl)pyridine-3-carboxylic acid Chemical compound OC(=O)C1=CC=C(C(F)(F)F)N=C1Cl DXRBTBMFFGEVCX-UHFFFAOYSA-N 0.000 claims abstract description 6
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 claims description 23
- CDSFASYGONAHHN-UHFFFAOYSA-N 2-chloro-6-(trifluoromethyl)pyridine-3-carbonitrile Chemical compound FC(F)(F)C1=CC=C(C#N)C(Cl)=N1 CDSFASYGONAHHN-UHFFFAOYSA-N 0.000 claims description 16
- XHXFXVLFKHQFAL-UHFFFAOYSA-N phosphoryl trichloride Chemical compound ClP(Cl)(Cl)=O XHXFXVLFKHQFAL-UHFFFAOYSA-N 0.000 claims description 16
- CTSLXHKWHWQRSH-UHFFFAOYSA-N oxalyl chloride Chemical compound ClC(=O)C(Cl)=O CTSLXHKWHWQRSH-UHFFFAOYSA-N 0.000 claims description 12
- FYSNRJHAOHDILO-UHFFFAOYSA-N thionyl chloride Chemical compound ClS(Cl)=O FYSNRJHAOHDILO-UHFFFAOYSA-N 0.000 claims description 8
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 7
- WPPJGHKCGNVACP-UHFFFAOYSA-N 2-chloro-6-(trifluoromethyl)pyridine-3-carbonyl chloride Chemical compound FC(F)(F)C1=CC=C(C(Cl)=O)C(Cl)=N1 WPPJGHKCGNVACP-UHFFFAOYSA-N 0.000 claims description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 6
- NGNBDVOYPDDBFK-UHFFFAOYSA-N 2-[2,4-di(pentan-2-yl)phenoxy]acetyl chloride Chemical compound CCCC(C)C1=CC=C(OCC(Cl)=O)C(C(C)CCC)=C1 NGNBDVOYPDDBFK-UHFFFAOYSA-N 0.000 claims description 5
- BZBYBGBFDYFKMU-UHFFFAOYSA-N 2-(fluoromethyl)pyridine-3-carbonitrile Chemical compound FCC1=NC=CC=C1C#N BZBYBGBFDYFKMU-UHFFFAOYSA-N 0.000 claims description 3
- 239000007858 starting material Substances 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 34
- 150000001875 compounds Chemical class 0.000 description 22
- 239000002585 base Substances 0.000 description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- RFFLAFLAYFXFSW-UHFFFAOYSA-N 1,2-dichlorobenzene Chemical compound ClC1=CC=CC=C1Cl RFFLAFLAYFXFSW-UHFFFAOYSA-N 0.000 description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 9
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 7
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 6
- SMWDFEZZVXVKRB-UHFFFAOYSA-N Quinoline Chemical compound N1=CC=CC2=CC=CC=C21 SMWDFEZZVXVKRB-UHFFFAOYSA-N 0.000 description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 6
- 238000001914 filtration Methods 0.000 description 6
- 238000003786 synthesis reaction Methods 0.000 description 6
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 5
- 230000035484 reaction time Effects 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 238000005160 1H NMR spectroscopy Methods 0.000 description 4
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 4
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- OISVCGZHLKNMSJ-UHFFFAOYSA-N 2,6-dimethylpyridine Chemical compound CC1=CC=CC(C)=N1 OISVCGZHLKNMSJ-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- SJRJJKPEHAURKC-UHFFFAOYSA-N N-Methylmorpholine Chemical compound CN1CCOCC1 SJRJJKPEHAURKC-UHFFFAOYSA-N 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 239000005708 Sodium hypochlorite Substances 0.000 description 3
- 239000003905 agrochemical Substances 0.000 description 3
- 238000004821 distillation Methods 0.000 description 3
- 239000003814 drug Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 2
- BSKHPKMHTQYZBB-UHFFFAOYSA-N 2-methylpyridine Chemical compound CC1=CC=CC=N1 BSKHPKMHTQYZBB-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
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- JGFZNNIVVJXRND-UHFFFAOYSA-N N,N-Diisopropylethylamine (DIPEA) Chemical compound CCN(C(C)C)C(C)C JGFZNNIVVJXRND-UHFFFAOYSA-N 0.000 description 2
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 description 2
- JLTDJTHDQAWBAV-UHFFFAOYSA-N N,N-dimethylaniline Chemical compound CN(C)C1=CC=CC=C1 JLTDJTHDQAWBAV-UHFFFAOYSA-N 0.000 description 2
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- GGSUCNLOZRCGPQ-UHFFFAOYSA-N diethylaniline Chemical compound CCN(CC)C1=CC=CC=C1 GGSUCNLOZRCGPQ-UHFFFAOYSA-N 0.000 description 2
- 150000002170 ethers Chemical class 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000003880 polar aprotic solvent Substances 0.000 description 2
- FVSKHRXBFJPNKK-UHFFFAOYSA-N propionitrile Chemical compound CCC#N FVSKHRXBFJPNKK-UHFFFAOYSA-N 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- HXJUTPCZVOIRIF-UHFFFAOYSA-N sulfolane Chemical compound O=S1(=O)CCCC1 HXJUTPCZVOIRIF-UHFFFAOYSA-N 0.000 description 2
- 150000003512 tertiary amines Chemical class 0.000 description 2
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 2
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 2
- GETQZCLCWQTVFV-UHFFFAOYSA-N trimethylamine Chemical compound CN(C)C GETQZCLCWQTVFV-UHFFFAOYSA-N 0.000 description 2
- 239000008096 xylene Substances 0.000 description 2
- ZPQOPVIELGIULI-UHFFFAOYSA-N 1,3-dichlorobenzene Chemical compound ClC1=CC=CC(Cl)=C1 ZPQOPVIELGIULI-UHFFFAOYSA-N 0.000 description 1
- OCJBOOLMMGQPQU-UHFFFAOYSA-N 1,4-dichlorobenzene Chemical compound ClC1=CC=C(Cl)C=C1 OCJBOOLMMGQPQU-UHFFFAOYSA-N 0.000 description 1
- CXBDYQVECUFKRK-UHFFFAOYSA-N 1-methoxybutane Chemical compound CCCCOC CXBDYQVECUFKRK-UHFFFAOYSA-N 0.000 description 1
- GQHTUMJGOHRCHB-UHFFFAOYSA-N 2,3,4,6,7,8,9,10-octahydropyrimido[1,2-a]azepine Chemical compound C1CCCCN2CCCN=C21 GQHTUMJGOHRCHB-UHFFFAOYSA-N 0.000 description 1
- JRYYVMDEUJQWRO-UHFFFAOYSA-N 2-methylnicotinamide Chemical compound CC1=NC=CC=C1C(N)=O JRYYVMDEUJQWRO-UHFFFAOYSA-N 0.000 description 1
- RGUKYNXWOWSRET-UHFFFAOYSA-N 4-pyrrolidin-1-ylpyridine Chemical compound C1CCCN1C1=CC=NC=C1 RGUKYNXWOWSRET-UHFFFAOYSA-N 0.000 description 1
- DDIXMUVENCORLG-UHFFFAOYSA-N 6-(trifluoromethyl)pyridine-3-carbonyl chloride Chemical compound FC(F)(F)C1=CC=C(C(Cl)=O)C=N1 DDIXMUVENCORLG-UHFFFAOYSA-N 0.000 description 1
- RIKJKWNZUSPCCM-UHFFFAOYSA-N 6-(trifluoromethyl)pyridine-3-carboxamide Chemical compound NC(=O)C1=CC=C(C(F)(F)F)N=C1 RIKJKWNZUSPCCM-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 1
- -1 alkali metal hypochlorite Chemical class 0.000 description 1
- 229910001860 alkaline earth metal hydroxide Inorganic materials 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- RQPZNWPYLFFXCP-UHFFFAOYSA-L barium dihydroxide Chemical compound [OH-].[OH-].[Ba+2] RQPZNWPYLFFXCP-UHFFFAOYSA-L 0.000 description 1
- 229910001863 barium hydroxide 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
- 150000008282 halocarbons Chemical class 0.000 description 1
- GNOIPBMMFNIUFM-UHFFFAOYSA-N hexamethylphosphoric triamide Chemical compound CN(C)P(=O)(N(C)C)N(C)C GNOIPBMMFNIUFM-UHFFFAOYSA-N 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- PPHQUIPUBYPZLD-UHFFFAOYSA-N n-ethyl-n-methylaniline Chemical compound CCN(C)C1=CC=CC=C1 PPHQUIPUBYPZLD-UHFFFAOYSA-N 0.000 description 1
- 239000012044 organic layer Substances 0.000 description 1
- SATVIFGJTRRDQU-UHFFFAOYSA-N potassium hypochlorite Chemical compound [K+].Cl[O-] SATVIFGJTRRDQU-UHFFFAOYSA-N 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- IMFACGCPASFAPR-UHFFFAOYSA-N tributylamine Chemical compound CCCCN(CCCC)CCCC IMFACGCPASFAPR-UHFFFAOYSA-N 0.000 description 1
- IMNIMPAHZVJRPE-UHFFFAOYSA-N triethylenediamine Chemical compound C1CN2CCN1CC2 IMNIMPAHZVJRPE-UHFFFAOYSA-N 0.000 description 1
- RKBCYCFRFCNLTO-UHFFFAOYSA-N triisopropylamine Chemical compound CC(C)N(C(C)C)C(C)C RKBCYCFRFCNLTO-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
- C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
- C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D213/60—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D213/72—Nitrogen atoms
- C07D213/73—Unsubstituted amino or imino radicals
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
- C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
- C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D213/60—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D213/78—Carbon atoms having three bonds to hetero atoms, with at the most one bond to halogen, e.g. ester or nitrile radicals
- C07D213/79—Acids; Esters
- C07D213/803—Processes of preparation
- C07D213/807—Processes of preparation by oxidation of pyridines or condensed pyridines
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
- C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
- C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D213/60—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D213/78—Carbon atoms having three bonds to hetero atoms, with at the most one bond to halogen, e.g. ester or nitrile radicals
- C07D213/81—Amides; Imides
- C07D213/82—Amides; Imides in position 3
Definitions
- the present invention relates to a method for producing 3-amino-2-chloro-6-trifluoromethylpyridine useful as an intermediate for pharmaceuticals, agricultural chemicals and the like.
- 3-Amino-2-chloro-6-trifluoromethylpyridine is a known compound as an intermediate for pharmaceuticals and agrochemicals.
- Patent Document 1 discloses 2-chloro-3-nitro-6-trifluoro. A process by reduction of methylpyridine is disclosed.
- the method for producing 3-amino-2-chloro-6-trifluoromethylpyridine although disclosed in Patent Document 1, has a low yield and is insufficient as an industrial production method.
- An object of the present invention is to provide a process for producing 3-amino-2-chloro-6-trifluoromethylpyridine with good industrial yield.
- the present inventors have reacted 2-chloro-6-trifluoromethylnicotinamide with hypochlorite in the presence of a solvent and a base. While finding that 3-amino-2-chloro-6-trifluoromethylpyridine can be produced with high yield, a method for efficiently producing 2-chloro-6-trifluoromethylnicotinamide as a raw material was found, The present invention has been completed. That is, the present invention is characterized by reacting 2-chloro-6-trifluoromethylnicotinamide with hypochlorite in the presence of a solvent and a base. The present invention relates to a method for producing methylpyridine.
- the present invention also provides 2-chloro-6-trifluoromethylnicotinic acid chloride by reacting 2-chloro-6-trifluoromethylnicotinic acid with thionyl chloride or oxalyl chloride, and the resulting 2-chloro- A process for producing 2-chloro-6-trifluoromethylnicotinamide by reacting 6-trifluoromethylnicotinic acid chloride with aqueous ammonia; and 2-hydroxy-6-trifluoromethylnicotinamide in the presence of a base.
- the present invention relates to a process for producing 6-trifluoromethylnicotinamide.
- 3-amino-2-chloro-6-trifluoromethylpyridine can be produced industrially efficiently.
- the hypochlorite that can be used in this reaction is preferably an alkali metal hypochlorite such as sodium hypochlorite or potassium hypochlorite, and more preferably sodium hypochlorite.
- the amount of hypochlorite used is 0.5 to 1.5 times mol, preferably 0.7 to 1 times mol for the compound of formula (II).
- bases that can be used in this reaction include alkali metal hydroxides such as sodium hydroxide and potassium hydroxide; alkaline earth metal hydroxides such as barium hydroxide and calcium hydroxide.
- the amount used is 2 to 3 times the mol of the compound of formula (II).
- sodium hydroxide is preferable.
- the solvent may be any solvent as long as it is inert to the reaction.
- ethers such as tetrahydrofuran and dioxane; acetonitrile, propionitrile, N, N-dimethylformamide, dimethyl sulfoxide, hexamethylphosphoric
- polar aprotic solvents such as triamide, sulfolane, dimethylacetamide and N-methylpyrrolidone; water and the like can be appropriately selected.
- the solvent can be used in an amount of 5 to 10 times the volume of the compound of formula (II).
- the solvent is preferably water.
- the reaction can usually be carried out at 60 to 100 ° C., and the reaction time is usually about 0.5 to 1 hour.
- the compound of formula (II), which is a raw material for the reaction [A], can be produced by the reaction [B] or [C] described later.
- 2-chloro-6-trifluoromethylnicotinic acid represented by the formula (III) is usually converted to 2-chloro-6-trifluoromethylnicotinic acid chloride represented by the formula (IV) (acid).
- the resulting acid chloride can be treated with aqueous ammonia in the presence of a solvent to obtain the compound of formula (II).
- the reaction to be converted into an acid chloride can usually be carried out by reacting the compound of the formula (III) with an equimolar amount or more of thionyl chloride or oxalyl chloride. This reaction may use a solvent, and any solvent may be used as long as it is inert to the reaction.
- halogenated hydrocarbons such as methylene chloride, chloroform, carbon tetrachloride and chlorobenzene.
- aromatic hydrocarbons such as benzene, toluene and xylene.
- the reaction can usually be carried out at 60 to 100 ° C., and the reaction time is usually about 0.5 to 2 hours.
- the compound of the formula (IV) produced in this reaction is purified or used for the next reaction without purification.
- the resulting acid chloride is usually treated with 20 to 30% aqueous ammonia in the presence of a solvent to produce the compound of formula (II).
- Aqueous ammonia can be used in an excess amount relative to the compound of formula (IV), and is preferably 3 to 10 moles.
- the solvent any solvent inert to the reaction may be used.
- ethers such as butyl methyl ether, tetrahydrofuran, dioxane, dimethoxyethane; acetonitrile, propionitrile, N, N-dimethylformamide,
- polar aprotic solvents such as dimethyl sulfoxide, hexamethylphosphoric triamide, sulfolane, dimethylacetamide, N-methylpyrrolidone and the like.
- the solvent can be used in an amount of 1 to 3 times the volume of the compound of formula (III).
- the reaction can usually be carried out at 0 to 40 ° C., and the reaction time is usually about 0.5 to 2 hours.
- the reaction [C] is usually carried out by treating 2-chloro-6-trifluoromethylnicotinonitrile represented by the formula (V) with 1 to 3 times by volume, preferably 94 to 98% concentrated sulfuric acid. be able to.
- the reaction can usually be carried out at 60 to 80 ° C., and the reaction time is usually about 1 to 3 hours.
- the compound of Formula (V) can be manufactured by reaction [D].
- Reaction [D] can usually be carried out by reacting 2-hydroxy-6-trifluoromethylnicotinamide represented by the formula (VI) with phosphorus oxychloride in the presence of a base.
- the phosphorus oxychloride used in this reaction can be used in an amount of 2 to 3 moles compared to the compound of the formula (VI).
- Examples of the base that can be used in this reaction include trimethylamine, triethylamine, triisopropylamine, diisopropylethylamine, tributylamine, 4-dimethylaminopyridine, 4-pyrrolidinopyridine, N-methylmorpholine, N, N-dimethylaniline, N, N-diethylaniline, N-ethyl-N-methylaniline, 1,8-diazabicyclo [5.4.0] -7-undecene, 1,4-diazabicyclo [2.2.2] octane and the like.
- One or more can be selected as appropriate from tertiary amines; quinoline; pyridine; 2,6-dimethylpyridine and the like.
- the base can be used in an amount of 1 to 3 moles compared to the compound of the formula (V).
- the base is preferably a tertiary amine or quinoline.
- This reaction can be carried out usually at 100 to 160 ° C., preferably 130 to 140 ° C., and the reaction time is usually about 3 to 36 hours.
- This reaction can be performed in the presence of a solvent, if necessary. Any solvent may be used as long as it does not adversely affect the reaction.
- aromatic hydrocarbons such as toluene, xylene, chlorobenzene, 1,2-dichlorobenzene, 1,3-dichlorobenzene, 1,4-dichlorobenzene. Among them, 1,2-dichlorobenzene is preferable.
- the present invention also includes the following methods.
- a compound of formula (II) is produced by the reaction [B], and the compound of formula (II) is reacted with hypochlorite in the presence of a base to give 3- A process for producing amino-2-chloro-6-trifluoromethylpyridine.
- a compound of formula (II) is produced by the reaction [C], and the compound of formula (II) is reacted with hypochlorite in the presence of a base to give 3- A process for producing amino-2-chloro-6-trifluoromethylpyridine.
- a compound of formula (II) is produced by the above reactions [D] and [C], and the compound of formula (II) is reacted with hypochlorite in the presence of a base to give a compound of formula (I ) 3-amino-2-chloro-6-trifluoromethylpyridine.
- Example 1 Synthesis of 2-chloro-6-trifluoromethylnicotinonitrile (1) To 300 g of 2-hydroxy-6-trifluoromethylnicotinamide, 300 mL of triethylamine was added, and 300 mL of phosphorus oxychloride was added dropwise little by little. After reacting at 130 ° C. for 4 hours, the cooled reaction solution was gradually added to 1 L of water. After stirring for 30 minutes under ice cooling, the precipitated solid was collected by filtration and washed with 300 mL of water.
- Example 6 Synthesis of 3-amino-2-chloro-6-trifluoromethylpyridine 11.6 wt% sodium hypochlorite in a mixture of 200 g 2-chloro-6-trifluoromethylnicotinamide and 1000 ml water under ice-cooling 432 ml of an aqueous solution and then 190 ml of a 10N aqueous sodium hydroxide solution were added dropwise and stirred at 90 ° C. for 30 minutes.
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Abstract
Description
本発明の目的は、工業的に収率良く、3-アミノ-2-クロロ-6-トリフルオロメチルピリジンを製造する方法を提供することにある。
即ち、本発明は2-クロロ-6-トリフルオロメチルニコチンアミドを溶媒及び塩基の存在下で、次亜塩素酸塩と反応させることを特徴とする3-アミノ-2-クロロ-6-トリフルオロメチルピリジンの製造方法に関する。又、本発明は、2-クロロ-6-トリフルオロメチルニコチン酸を塩化チオニル又はオキサリルクロリドと反応させて2-クロロ-6-トリフルオロメチルニコチン酸クロリドを製造し、得られた2-クロロ-6-トリフルオロメチルニコチン酸クロリドをアンモニア水と反応させて2-クロロ-6-トリフルオロメチルニコチンアミドを製造する方法;並びに、2-ヒドロキシ-6-トリフルオロメチルニコチンアミドを塩基の存在下でオキシ塩化リンと反応させて、2-クロロ-6-トリフルオロメチルニコチノニトリルを製造し、得られた2-クロロ-6-トリフルオロメチルニコチノニトリルを濃硫酸と反応させて2-クロロ-6-トリフルオロメチルニコチンアミドを製造する方法に関する。
反応[A]で示したように、式(I)で表される3-アミノ-2-クロロ-6-トリフルオロメチルピリジンは、式(II)で表される2-クロロ-6-トリフルオロメチルニコチンアミドを溶媒及び塩基の存在下、次亜塩素酸塩と反応することにより製造することができる。
本反応に使用することができる塩基の例としては、水酸化ナトリウム、水酸化カリウムのようなアルカリ金属水酸化物;水酸化バリウム、水酸化カルシウムのようなアルカリ土類金属水酸化物が挙げられ、その使用量は式(II)の化合物に対して2~3倍モルである。塩基としては、水酸化ナトリウムが好ましい。
溶媒としては、反応に不活性な溶媒であればいずれのものでもよく、例えば、テトラヒドロフラン、ジオキサンのようなエーテル類;アセトニトリル、プロピオニトリル、N,N-ジメチルホルムアミド、ジメチルスルホキシド、ヘキサメチルホスホリックトリアミド、スルホラン、ジメチルアセトアミド、N-メチルピロリドンのような極性非プロトン性溶媒;水などから1種又は2種以上を適宜選択することができる。溶媒は、式(II)の化合物に対して5~10倍容量使用することができる。溶媒は、水が好ましい。
反応は、通常60~100℃で行うことができ、その反応時間は、通常0.5~1時間程度である。
酸塩化物に変換させる反応は、通常、式(III)の化合物と、等モル以上の塩化チオニル又はオキサリルクロリドとを反応させることにより行なうことができる。
本反応は溶媒を使用してもよく、溶媒としては、反応に不活性な溶媒であればいずれの物でもよく、例えば、塩化メチレン、クロロホルム、四塩化炭素、クロロベンゼンのようなハロゲン化炭化水素類;ベンゼン、トルエン、キシレンのような芳香族炭化水素類などから1種又は2種以上を適宜選択することができる。
反応は、通常60~100℃で行うことができ、その反応時間は、通常0.5~2時間程度である。
本反応で製造される式(IV)の化合物は、精製し、又は精製することなく次反応に使用される。
次に、得られる酸塩化物を、通常、溶媒の存在下で好ましくは20~30%のアンモニア水で処理することにより、式(II)の化合物を製造することができる。
アンモニア水は式(IV)の化合物に対して過剰量使用することができ、望ましくは3倍モル~10倍モルである。
溶媒としては、反応に不活性な溶媒であればいずれのものでもよく、例えば、ブチルメチルエーテル、テトラヒドロフラン、ジオキサン、ジメトキシエタンのようなエーテル類;アセトニトリル、プロピオニトリル、N,N-ジメチルホルムアミド、ジメチルスルホキシド、ヘキサメチルホスホリックトリアミド、スルホラン、ジメチルアセトアミド、N-メチルピロリドンのような極性非プロトン性溶媒などから1種又は2種以上を適宜選択することができる。溶媒は式(III)の化合物に対して1~3倍容量使用することができる。
反応は、通常0~40℃で行うことができ、その反応時間は、通常0.5~2時間程度である。
式(V)の化合物は、反応〔D〕により製造することができる。
本反応に使用するオキシ塩化リンは、式(VI)の化合物に対して2~3倍モル使用することができる。
本反応に使用することのできる塩基としては、トリメチルアミン、トリエチルアミン、トリイソプロピルアミン、ジイソプロピルエチルアミン、トリブチルアミン、4-ジメチルアミノピリジン、4-ピロリジノピリジン、N-メチルモルホリン、N,N-ジメチルアニリン、N,N-ジエチルアニリン、N-エチル-N-メチルアニリン、1,8-ジアザビシクロ〔5.4.0〕-7-ウンデセン、1,4-ジアザビシクロ〔2.2.2〕オクタンのような第三級アミン類;キノリン;ピリジン;2,6-ジメチルピリジンなどから1種又は2種以上を適宜選択することができる。塩基は、式(V)の化合物に対して1~3倍モル使用することができる。塩基は、第三級アミン類又はキノリンが好ましい。
本反応は、必要に応じて溶媒存在下で行うことができる。溶媒としては、反応に悪影響を与えないものであれば良く、例えばトルエン、キシレン、クロロベンゼン、1,2-ジクロロベンゼン、1,3-ジクロロベンゼン、1,4-ジクロロベンゼンのような芳香族炭化水素類を挙げることができるが、中でも1,2-ジクロロベンゼンが望ましい。
(1)前記反応〔B〕により、式(II)の化合物を製造し、式(II)の化合物を塩基の存在下で、次亜塩素酸塩と反応させることにより式(I)の3-アミノ-2-クロロ-6-トリフルオロメチルピリジンを製造する方法。
(2)前記反応〔C〕により、式(II)の化合物を製造し、式(II)の化合物を塩基の存在下で、次亜塩素酸塩と反応させることにより式(I)の3-アミノ-2-クロロ-6-トリフルオロメチルピリジンを製造する方法。
(3)前記反応〔D〕及び〔C〕により、式(II)の化合物を製造し、式(II)の化合物を塩基の存在下で、次亜塩素酸塩と反応させることにより式(I)の3-アミノ-2-クロロ-6-トリフルオロメチルピリジンを製造する方法。
実施例1 2-クロロ-6-トリフルオロメチルニコチノニトリルの合成(1)
2-ヒドロキシ-6-トリフルオロメチルニコチンアミド300gにトリエチルアミン300mLを添加し、オキシ塩化リン300mLを少しずつ滴下した。130℃で4時間反応後、放冷した反応液を水1Lに徐々に加えた。氷冷下、30分攪拌後、析出した固体をろ取し、水300mLで洗浄した。ろ取した固体を減圧蒸留(120℃/18mmHg)により精製し、2-クロロ-6-トリフルオロメチルニコチノニトリル(融点:35~36℃)247gを得た。1H-NMR(CDCl3) δ=7.75(1H, d, J= 7.8Hz), 8.21(1H, d, J= 7.8Hz).
2-ヒドロキシ-6-トリフルオロメチルニコチンアミド100g中にキノリン86mL、オキシ塩化リン136mLを順に加え、140℃で24時間攪拌した。得られた残渣を室温に戻した後水500mL中にゆっくり加え、氷冷下攪拌後、析出した固体を濾取し、減圧蒸留(90℃/4mmHg)により精製し、2-クロロ-6-トリフルオロメチルニコチノニトリル72gを得た。
2-ヒドロキシ-6-トリフルオロメチルニコチンアミド300gの1,2-ジクロロベンゼン600ml懸濁液にトリエチルアミン300mLを添加し、オキシ塩化リン300mLを少しずつ滴下した。140℃で4時間反応後、放冷した反応液を水1Lに徐々に加えた。有機層を分離し、減圧蒸留(110~120℃/15mmHg)により精製し、2-クロロ-6-トリフルオロメチルニコチノニトリル220gを得た。
2-クロロ-6-トリフルオロメチルニコチン酸49gにオキサリルクロリド49mL、DMF(ジメチルホルムアミド)1滴を滴下し、1時間還流した。反応終了後、過剰のオキサリルクロリドを減圧下に留去し、粗製の2-クロロ-6-トリフルオロメチルニコチン酸クロリド(油状物質)を得た。1H-NMR(CDCl3) δ= 7.78(1H, d, J = 7.6Hz), 8.50(1H, d, J = 7.6Hz).
次に、得られた2-クロロ-6-トリフルオロメチルニコチン酸クロリドにTHF(テトラヒドロフラン)50mLを加えた溶液を氷冷下、28wt%アンモニア水250mLに、少しずつ滴下した。30分攪拌した後、水を加えて、ろ取し、水洗、乾燥して、2-クロロ-6-トリフルオロメチルニコチンアミド40.7g(融点:215~217℃)を得た。1H-NMR(DMSO-d6) δ= 7.97(1H, bs), 8.00(1H, d, J= 7.4Hz), 8.18(1H, bs), 8.18(1H, d, J= 7.4Hz).
2-クロロ-6-トリフルオロメチルニコチノニトリル100g中に96vol%硫酸140mLを加え、75℃で2時間攪拌した。反応液を冷水500mL中に投入し析出した結晶を濾取、水洗、乾燥して、2-クロロ-6-トリフルオロメチルニコチンアミド108gを得た。
2-クロロ-6-トリフルオロメチルニコチンアミド200g及び水1000mlの混合物に氷冷下で11.6wt%次亜塩素酸ナトリウム水溶液432ml、次いで10規定水酸化ナトリウム水溶液190mlを滴下し、90℃で30分間攪拌した。反応混合物を10℃まで冷却し、析出した結晶を濾取、冷水100mlで3回洗浄した後、室温で24時間乾燥して、3-アミノ-2-クロロ-6-トリフルオロメチルピリジン(融点:96~97℃)144gを得た。1H-NMR(CDCl3) δ= 4.47(2H, bs, NH2), 7.09(1H, d, J= 7.8Hz), 7.42(1H, d, J= 7.8Hz).
なお、2008年3月4日に出願された日本特許出願2008-053247号の明細書、特許請求の範囲、及び要約書の全内容をここに引用し、本発明の明細書の開示として、取り入れるものである。
Claims (5)
- 2-クロロ-6-トリフルオロメチルニコチンアミドを溶媒及び塩基の存在下で、次亜塩素酸塩と反応させることを特徴とする3-アミノ-2-クロロ-6-トリフルオロメチルピリジンの製造方法。
- 2-クロロ-6-トリフルオロメチルニコチン酸を塩化チオニル又はオキサリルクロリドと反応させて2-クロロ-6-トリフルオロメチルニコチン酸クロリドを製造し、得られた2-クロロ-6-トリフルオロメチルニコチン酸クロリドをアンモニア水と反応させて2-クロロ-6-トリフルオロメチルニコチンアミドを製造し、次に、2-クロロ-6-トリフルオロメチルニコチンアミドを次亜塩素酸塩と反応させることを特徴とする請求項1に記載の製造方法。
- 2-ヒドロキシ-6-トリフルオロメチルニコチンアミドを塩基の存在下でオキシ塩化リンと反応させて2-クロロ-6-トリフルオロメチルニコチノニトリルを製造し、得られた2-クロロ-6-トリフルオロメチルニコチノニトリルを濃硫酸と反応させて2-クロロ-6-トリフルオロメチルニコチンアミドを製造し、次に、2-クロロ-6-トリフルオロメチルニコチンアミドを次亜塩素酸塩と反応させることを特徴とする請求項1に記載の製造方法。
- 2-クロロ-6-トリフルオロメチルニコチン酸を塩化チオニル又はオキサリルクロリドと反応させて2-クロロ-6-トリフルオロメチルニコチン酸クロリドを製造し、得られた2-クロロ-6-トリフルオロメチルニコチン酸クロリドをアンモニア水と反応させることを特徴とする2-クロロ-6-トリフルオロメチルニコチンアミドの製造方法。
- 2-ヒドロキシ-6-トリフルオロメチルニコチンアミドを塩基の存在下でオキシ塩化リンと反応させて2-クロロ-6-トリフルオロメチルニコチノニトリルを製造し、得られた2-クロロ-6-トリフルオロメチルニコチノニトリルを濃硫酸と反応させることを特徴とする2-クロロ-6-トリフルオロメチルニコチンアミドの製造方法。
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See also references of EP2251329A4 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2015000715A1 (en) | 2013-07-02 | 2015-01-08 | Syngenta Participations Ag | Pesticidally active bi- or tricyclic heterocycles with sulfur containing substituents |
EP3778598A2 (en) | 2013-07-02 | 2021-02-17 | Syngenta Participations Ag | Pesticidally active bi- or tricyclic heterocycles with sulfur containing substituents |
Also Published As
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JP2009235062A (ja) | 2009-10-15 |
CN101959863B (zh) | 2014-01-08 |
KR101540495B1 (ko) | 2015-07-29 |
CN101959863A (zh) | 2011-01-26 |
EP2251329A4 (en) | 2012-03-21 |
JP5524491B2 (ja) | 2014-06-18 |
EP2251329A1 (en) | 2010-11-17 |
KR20100124269A (ko) | 2010-11-26 |
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