WO2005121111A1 - 3-アミノメチルテトラヒドロフラン誘導体の製造方法 - Google Patents
3-アミノメチルテトラヒドロフラン誘導体の製造方法 Download PDFInfo
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- C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
- C07D307/02—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings
- C07D307/04—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having no double bonds between ring members or between ring members and non-ring members
- C07D307/10—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having no double bonds between ring members or between ring members and non-ring members with substituted hydrocarbon radicals attached to ring carbon atoms
- C07D307/14—Radicals substituted by nitrogen atoms not forming part of a nitro radical
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- the present invention relates to a method for producing a 3-aminomethyltetrahydrofuran derivative. More specifically, the present invention relates to a method for producing a 3-aminomethyltetrahydrofuran derivative for reducing a 3-cyanotetrahydrofuran derivative. 3-Aminomethyltetrahydrofuran derivatives are useful as intermediates for pharmaceuticals and agricultural chemicals.
- R 1 and R 11 each represent a hydrogen atom or a lower alkyl group.
- 3-hydroxymethyltetrahydrofuran is used as a raw material, and is derivatized to 3- (tetrahydrofuryl) methylnodide or 3- (tetrahydrofuryl) methylsulfonate, and is reacted with potassium phthalimide to hydrolyze.
- a method of decomposing or decomposing hydrazine is described in Patent Document 1 mentioned above.
- 2-hydroxymethyl-1,4-butanediol which is a raw material of 3-hydroxymethyltetrahydrofuran, is expensive, and a large amount of by-products derived from phthalimide are generated. It is not an industrially advantageous method such as use.
- a method for producing a 3-cyanotetrahydrofuran derivative a method of irradiating tetrahydrofuran and chlorocyanine with ultraviolet rays in the presence of sodium bicarbonate (see Patent Document 3), a method of oxidizing ethylene and acrylonitrile in the presence of a catalyst.
- Patent Document 4 Only two examples of the reaction method (see Patent Document 4) are known, and the former has a low yield and selectivity, and the latter has a high selectivity V.
- the method of deviation is not efficient and cannot be said to be a method for producing a 3-cyanotetrahydrofuran derivative.
- a method of producing a 3-cyanotetrahydrofuran derivative from a 3-halogenido or 3-alkyl or arylsulfonylanitetratetrahydrofuran derivative which is the method of the present invention is not known.
- Patent Document 1 JP-A-7-179448
- Patent Document 2 Japanese Patent Application Laid-Open No. 9-110848
- Patent Document 3 German Patent No. 1234227
- Patent Document 4 JP-A-2000-264884
- the inventors of the present application have conducted intensive studies in order to achieve the above object, and as a result, have found a method for producing a 3-aminomethyltetrahydrofuran derivative by reducing the cyano group of a 3-cyanotetrahydrofuran derivative.
- the present inventors have found a method of producing a cyanotetrahydrofuran derivative from a malic acid derivative which is inexpensive and easily available industrially in high yield, and have completed the present invention.
- the first of the present invention is the general formula (1)
- R 4 , R 5 , R 6 , and R 7 represent a hydrogen atom or a hydrocarbon group having 1 to 4 carbon atoms which may be the same or different.
- R 5 , R 6 and R 7 represent a hydrogen atom or a hydrocarbon group having 1 to 4 carbon atoms which may be the same or different. This is a method for producing a 3-aminomethyltetrahydrofuran derivative represented by
- the second of the present invention is a compound represented by the general formula (3)
- RR 2 , R 3 , R 4 , R 5 , R 6 , and R ′ may be the same or different and represent a hydrogen atom or a hydrocarbon group having 1 to 4 carbon atoms.
- X is Represents a halogen atom or a hydrocarbon 1 to 6 alkylsulfonate group or a C6 to 12 arylsulfonate group).
- 3-Halogenated or 3-alkyl or arylsulfonate-tetrahydrofuran derivative A method for producing a 3-cyanotetrahydrofuran derivative represented by the general formula (1), characterized by reacting the compound with an organic or inorganic cyano compound.
- a third aspect of the present invention is to use a 3-aminomethod according to the first production method of the present invention, which uses the 3-cyanotetrahydrofuran derivative obtained by the second production method of the present invention. This is a method for producing a tyltetrahydrofuran derivative.
- a fourth aspect of the present invention is a general formula (3a) produced from a malic acid derivative in three steps.
- a 3-aminomethyltetrahydrofuran derivative can be produced industrially more advantageously than a conventional method using a low-cost raw material.
- R 6 and R 7 each independently represent a hydrogen atom or a hydrocarbon group having 1 to 4 carbon atoms, which may be the same or different. More specifically, examples of the hydrocarbon group having 1 to 4 carbon atoms include a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, a 2-butyl group, an isobutyl group and a t-butyl group. No.
- 3-cyanotetrahydrofuran derivative examples include 3-cyanotetrahydrofuran and hydrocarbon groups substituted with a hydrocarbon group such as 4-ethyl 3-cyanotetrahydrofuran and 3-methyl-3-cyanotetrahydrofuran.
- 3-Cyanotetrahydrofuran can be mentioned.
- the method for producing the 3-cyanotetrahydrofuran derivative used in the method of the present invention is not limited, but it is more preferably a method for cyanating a 3-halogenated or 3-alkyl- or arylsulfonatoidanitetrahydrofuran derivative described below. Can be manufactured.
- the 3-aminomethyltetrahydrofuran derivative represented by the general formula (2) is produced by reducing the cyano group of the 3 cyanotetrahydrofuran derivative represented by the general formula (1).
- R 2 , R 3 , R 4 , R 5 , R 6 , and R7 are represented by the general formula (1)
- R 6 and R 7 It is synonymous with R 6 and R 7 .
- 3-aminomethyltetrahydrofuran derivative include 3-aminomethyltetrahydrofuran and hydrocarbon group substitution such as 4-ethyl-3-aminomethyltetrahydrofuran and 3-methyl3-aminomethyltetrahydrofuran. And 3-cyanotetrahydrofuran.
- the 3-aminomethyltetrahydrofuran derivative obtained by the method of the present invention corresponds to the 3-cyanotetrahydrofuran derivative used, and each substituent of R 4 , R 5 , R 6 , and R 7 , R 2 , R 3, R 4 , Each substituent of R 6 and R 7 is the same.
- 3-cyanotetrahydrofuran V
- 3-aminomethyltetrahydrofuran is obtained
- 3-methyl-1-cyanotetrahydrofuran 3-methyl-3-aminomethyltetrahydrofuran is obtained.
- the method for reducing the cyano group of the 3-cyanotetrahydrofuran derivative of the present invention includes, for example, a method of reducing with a metal hydride, a method of reducing with hydrogen in the presence of a hydrogenation catalyst, and the like.
- metal hydride for reduction with a metal hydride specifically, for example, hydrogenation of lithium aluminum hydride, lithium trimethoxyaluminum hydride, aluminum hydride, diisobutylaluminum hydride, etc.
- Aluminum compounds include, for example, borohydride compounds such as diborane, lithium borohydride and sodium borohydride.
- the amount used in the case of reduction with a metal hydride is in the range of 2 to 10 mol, preferably 3 to 6 mol, per 1 mol of the normally used 3-cyanotetrahydrofuran derivative.
- the hydrogenation catalyst in the case of reduction with hydrogen in the presence of the hydrogenation catalyst may be a catalyst for reducing the cyano group of the 3-cyanotetrahydrofuran derivative of the present invention to an aminomethyl group by molecular hydrogen. Any compound may be used as long as it is normally used.
- Group 13 power At least one metal or metal compound selected is preferably used. More specifically, a metal or metal compound such as manganese, rhenium, iron, ruthenium, osmium, conolute, rhodium, iridium, nickel, and rhodium, platinum, copper, silver, gold, zinc, aluminum, etc. . These metals or metal compounds may or may not be dissolved in the reaction solution.
- hydrogenation catalysts include simple metals such as rhodium metal powder and palladium metal powder; Raney metal compounds such as Raney nickel, Raney copper, and Raney konoleto; and stable metals such as Raney nickel.
- Metal oxides such as palladium, oxidized rhenium and copper oxide, for example, metal composite oxidized products such as copper oxide-oxidized chromium, copper oxide-zinc oxide-oxidized aluminum, and the like, for example, RuClH (CO) ( PPh), RuCl
- the amount of the hydrogenation catalyst used is usually 0.1 to 10% by weight, preferably 1 to 5% by weight based on the 3-cyanotetrahydrofuran derivative when the catalyst to be used is dissolved in the reaction solution. If the catalyst used is not dissolved in the reaction solution, it is usually in the range of 0.1% by weight to 500% by weight, preferably 1% by weight to 200% by weight based on the 3-cyanotetrahydrofuran derivative.
- a method of reducing with hydrogen in the presence of a hydrogenation catalyst is preferable.
- a hydrogenation catalyst a metal or metal compound of Group 9 or Group 10 of the Periodic Table is preferable, and a metal or metal compound of cobalt is more preferable, and a metal or metal compound of cobalt is more preferable.
- the method of the present invention for reducing a 3-cyanotetrahydrofuran derivative may be carried out without using a solvent, but it is usually carried out in the presence of a solvent.
- a solvent As the solvent to be used, a suitable solvent differs depending on the method for reducing the cyano group.
- aliphatic or alicyclic hydrocarbons having 5 to 20 carbon atoms such as n-hexane, n-pentane or cyclohexane
- Aromatic hydrocarbons having 6 to 20 carbon atoms such as toluene, toluene, and ethylbenzene
- aliphatic or aromatic halides having 1 to 20 carbon atoms such as, for example, chloroform, benzene, and dichlorobenzene
- acetyl ether Ethers having 2 to 20 carbon atoms, such as diphenyl ether, tetrahydrofuran, and ethylene glycol dimethyl ether
- two or more of these solvents may be used as a mixture. Of these solvents, the use of ethers is particularly preferred.
- the solvent used for reduction with hydrogen in the presence of a hydrogenation catalyst includes water, for example, alcohols having 1 to 20 carbon atoms such as methanol, ethanol, and butanol, for example, n-hexane, n-hexane, and the like.
- Aliphatic or alicyclic hydrocarbons having 5 to 20 carbon atoms such as pentane or cyclohexane, for example, aromatic hydrocarbons having 6 to 20 carbon atoms such as benzene, toluene, and ethylbenzene, such as getyl ether; Ethers having 2 to 20 carbon atoms such as diphenyl ether, tetrahydrofuran and ethylene glycol dimethyl ether are preferably used. Further, two or more of these solvents may be used as a mixture. Of these solvents, the use of water, in which the use of water, alcohols and ethers is preferred, is more preferred.
- the amount of the solvent when used is not uniform depending on the reaction conditions, but is usually 0.01 to 200 parts by weight, preferably 0.02 to 50 parts by weight, per 1 part by weight of the 3-cyanotetrahydrofuran derivative. Preferably it is in the range of 0.05 to 2 parts by weight.
- ammonia is ammonia water, liquid ammonia, or ammonia gas, and it is more preferable that ammonia is ammonia water.
- the amount of ammonia used is not particularly limited, but is usually in the range of 0.01 to 50 mol of ammonia, preferably 0.1 to 20 mol of ammonia, more preferably 1 mol of 3-cyanotetrahydrofuran derivative. Ranges from 0.3 to 5 moles of ammonia.
- the reduction is carried out with hydrogen in the presence of an ammonia and a metal or metal compound of Group 9 or 10 of the Periodic Table as a catalyst.
- the catalyst is a metal or metal compound of nickel or cobalt, and the ammonia More preferably, it is water.
- the reaction is carried out in the presence of aqueous ammonia, it is preferable to carry out the reaction in the presence of 0.05 to 2 parts by weight of aqueous ammonia with respect to 1 part by weight of the 3-cyanotetrahydrofuran derivative.
- R 4 , R 5 , R 6 , and R 7 are hydrogen atoms.
- the temperature and time for the reaction are not uniform depending on the type of the 3-cyanotetrahydrofuran derivative used and the reduction method.
- the reaction temperature is usually in the range of -10 to 150 ° C, preferably in the range of 0 to 120 ° C, and more preferably in the range of 10 to 100 ° C.
- the reaction temperature is usually in the range of 0 to 250 ° C, preferably in the range of 50 to 200 ° C, and more preferably in the range of 80 to 150 ° C. It is.
- the reaction time is usually within 100 hours, preferably in the range of 0.01 to 50 hours.
- the pressure at the time of the reaction is a force that can be carried out under reduced pressure, normal pressure, or pressure.
- the method of reduction with a metal hydride it is preferably carried out at normal pressure.
- the method of reducing with hydrogen in the presence of a hydrogenation catalyst it is preferably carried out under hydrogen pressure.
- the hydrogen pressure is usually in the range of 0.01 to 25 MPa gauge pressure, preferably in the range of 0.1 to 20 MPa gauge pressure, and more preferably in the range of 1 to 1 OMPa gauge pressure.
- the reaction method for reducing the cyano group is not particularly limited, and may be a batch system, a semi-batch system, or a continuous flow system.
- the catalyst used after completion of the reaction can be recovered by a conventional metal recovery method.
- a metal adsorbent such as ion-exchange resin or by extraction with a solvent, or when the catalyst is not dissolved in the reaction solution.
- These recovered catalysts can be used repeatedly as hydrogenation catalysts. In that case, the catalyst may be reused after performing a regeneration operation of the deactivated or reduced-activity catalyst, or a new catalyst may be additionally used.
- the 3-aminomethyltetrahydrofuran derivative produced by the method for reducing the 3-cyanotetrahydrofuran derivative of the present invention can be isolated according to a conventional separation method such as, for example, distillation.
- the 3-cyanotetrahydrofuran derivative represented by the general formula (1) is produced by reacting a 3-halogenated or 3-alkyl or arylsulfonatoide tetrahydrofuran derivative represented by the general formula (3) with an organic or inorganic cyano compound. .
- R 2, R 3, R 4 , R 5, R. And R 7 are R 1 R 2 and R in the general formula (1).
- X represents a halogen atom, an alkylsulfonate group having 1 to 6 carbon atoms or an arylsulfonate group having 6 to 12 carbon atoms.
- halogen atom include a fluorine atom, a chlorine atom, a bromine atom and an iodine atom.
- alkylsulfonate group having 1 to 6 carbon atoms include a methylsulfonate group and an ethylsulfonate group.
- C1-C6 hydrocarbon alkylsulfonate groups such as nathate groups, for example, C1-C6 halogen group substitutions such as trifluoromethylsulfonate groups and 1,1,1-trifluoroethylsulfonate groups And an alkylsulfonate group.
- the arylsulfonate group having 6 to 12 carbon atoms include a hydrocarbon arylsulfonate group having 6 to 12 carbon atoms such as a benzenesulfonate group and a p-toluenesulfonate group, for example, ⁇ trifluoromethylbenzene.
- Examples include a halogen-substituted aryl sulfonate group having 6 to 12 carbon atoms such as a sulfonate group.
- Examples of the 3-halogenated or 3-alkyl- or arylsulfonated-tetrahydrofuran derivative include, more specifically, 3-halogenated tetrahydrofuran such as, for example, 3-chlorotetrahydrofuran and 3-bromotetrahydrofuran, for example, 4-ethyl3 -Hydrochloride-substituted tetrahydrofuran, such as 3-chlorotetrahydrofuran, 3-methyl-3-iodotetrahydrofuran, etc., for example, 3- (p-toluenesulfonate) -tetrahydrofuran, 3-trifluoromethanesulfonate Examples thereof include 3-alkyl or arylsulfonyl-tetrahydrofuran such as
- the method for producing the trihalogenated or trialkyl or arylsulfonyl tetrahydrofuran derivative used in the method of the present invention is not limited, but is preferably produced by a method using a lingic acid derivative described below as a starting material. can do.
- the organic or inorganic cyano compound used in the method of the present invention refers to a halogen atom at the 3-position or an alkyl or arylsulfonate group at the 3-position of a 3-halodiani or 3-alkyl or arylsulfonatoanilide tetrahydrofuran derivative as a cyano group. It is an organic or inorganic cyano compound that can be converted. Specific examples of such organic cyano compounds include ketones having 1 to 20 carbon atoms such as glyco-tolyl and acetone cyanohydrin or cyanide hydride hydrogen adducts of aldehydes such as cyanide tetramethylammonium- ⁇ .
- ammonium cyanide cyanide such as triethylammonium cyanide.
- the inorganic cyano compound include hydrogen cyanide and alkali metal cyanide such as cyanide ammonium, for example, lithium cyanide, sodium cyanide, and sodium cyanide, and alkaline earth metal cyanide such as magnesium such as magnesium cyanide.
- alkali metal cyanide such as cyanide ammonium, for example, lithium cyanide, sodium cyanide, and sodium cyanide
- alkaline earth metal cyanide such as magnesium such as magnesium cyanide.
- transition metal cyanides of Groups 3 to 12 of the periodic table such as manganese cyanide, copper cyanide, and ruthenium cyanide.
- a hydrogen cyanide adduct of a ketone or aldehyde having 1 to 20 carbon atoms and an alkali metal cyanide are preferable, and an alkali metal cyanoide is more preferable!
- the amount of the organic or inorganic cyanide conjugate used is usually in the range of 0.1 to 10 mol, preferably 0.1 mol, per 1 mol of 3 halogen sulfide or 3 alkyl or arylsulfonate-tetrahydrofuran derivative. It is in the range of 8 to 3 moles.
- a compound that promotes the cyanation reaction may be added to the reaction mixture.
- Compounds that promote the cyanation reaction include, for example, halogenated compounds such as tetraethylammonium salt, tetraethylammonium bromide, triethylammonium chloride, and cetylpyridinium chloride.
- halogenated phospho-dimethyl salts such as tetraphenyl phospho-dimethyl chloride, tetraphenyl phospho-dimethyl bromide, and cyclic ether compounds such as 15 crown-5 ether and 18 crown 6-ether
- halogenated compounds such as phosphazem chloride Dansido phosphazem-a salt of an alkali metal such as sodium chloride, lithium chloride, potassium bromide, magnesium chloride, sodium iodide, potassium iodide, or an alkaline earth metal such as 1,8 diazabicyclo [5.
- amines such as pendecar 7 and 1,4 diazabicyclo [2.2.2] octane can be exemplified.
- the amount of these compounds used is usually from 0.001 to 100 mol, preferably from 0.01 to 50 mol, per 1 mol of the organic or inorganic cyano compound.
- the method for cyanating the compound represented by the general formula (3) according to the present invention can be carried out in the absence of a solvent, but is usually carried out in the presence of a solvent.
- a solvent include water and monohydric or polyhydric alcohols having 1 to 20 carbon atoms such as methanol, ethanol, butanol, and ethylene glycol, for example, n-hexane, n-hexane.
- —C5-20 aliphatic or alicyclic hydrocarbons such as pentane or cyclohexane, for example C6-20 aromatic hydrocarbons such as benzene, toluene and ethylbenzene, e.g.
- Aliphatic or aromatic halogenated compounds having 1 to 20 carbon atoms such as benzene and dichlorobenzene, for example, ethers having 2 to 20 carbon atoms such as getyl ether, diphenyl ether, tetrahydrofuran, ethylene glycol dimethyl ether, for example, N , N-dimethylformamide, N, N-dimethylacetamide, etc.
- Amides for example, aliphatic or aromatic imidazolidinones having 2 to 20 carbon atoms such as 1,3 dimethyl-2 imidazolidinone, for example, aliphatic or aromatic pyrrolidones having 4 to 20 carbon atoms such as N-methylpyrrolidone ,
- aliphatic or aromatic esters having 2 to 20 carbon atoms
- aliphatic or aromatic ketones having 3 to 20 carbon atoms such as acetone, methyl ethyl ketone, for example, acetonitrile
- C2-C20 aliphatic or aromatic nitriles such as benzo-tolyl, such as dimethylsulfoxide C2-C20 aliphatic or aromatic sulfoxides, such as C2-C20 fats such as sulfolane And aromatic or aromatic sulfones.
- the dielectric constant in the present invention means a dielectric constant at 20 to 30 ° C.
- Preferred solvents of this invention have a dielectric constant in all the temperature range is 20F'm _1 or more contained in the preferred solvents of the present invention as long 20F'm _1 least part of the temperature range Nag.
- the dielectric constant of the solvent can be found in, for example, Solvent, N.D.Book (edited by Teruzo Asahara et al., Kodansha, 1976) and the 5th revised edition of Chemical Handbook (II) (edited by Nippon Dani Kaikai, Maruzen, 2004).
- the values that have been set can be used.
- Some documents describe the dielectric constant as the relative permittivity, but this is synonymous.
- Specific examples of the solvent dielectric constant of 20F'm _1 or more for example methanol, Etano Lumpur, propanol, ethylene glycol, acetone, Asetonitoriru, N, N-dimethylformamide, N, N-dimethyl ⁇ Seto amide, 1 , 3-Dimethyl-2-imidazolidinone, dimethylsulfoxide, N-methylpyrrolidone and the like can be listed, but not limited thereto.
- Use of the solvent dielectric constant is an aprotic among 20F'm _1 more solvents further preferred.
- aliphatic or Kaoru aromatic amides dielectric constant than 20F'm _1 Among these solvents, aliphatic or aromatic imidazolidinones, the use of aliphatic or aromatic Suruhoki Sid such most preferred ,.
- solvents may be used as a mixture of two or more kinds.
- the amount of the solvent to be used is not uniform depending on the reaction conditions, but is usually 0.1 to 500 parts by weight per 1 part by weight of the 3-halogenated or 3-alkyl- or arylsulfonated-tetrahydrofuran derivative. 1 to 200 parts by weight, more preferably 2 to: LOO parts by weight.
- R 3 , R 4 , R 5 , R 6 , and R 7 are hydrogen atoms.
- X is more preferably a chlorine atom, which is preferably a halogen atom.
- the reaction temperature in the method of the present invention for cyanating the compound represented by the general formula (3) is usually in the range of 0 ° C to 250 ° C, preferably in the range of 20 to 200 ° C. , More preferably 50 It is in the range of ⁇ 180 ° C.
- the reaction time is usually within 100 hours, preferably in the range of 0.01 to 50 hours.
- the pressure during the reaction can be reduced, normal, or increased.
- the reaction method of the present invention is not particularly limited, and a batch system, a semi-batch system, or a continuous flow system may be used.
- the 3-cyanotetrahydrofuran derivative produced in the method of the present invention can be isolated according to a conventional separation method such as, for example, distillation or extraction.
- the first step power described below is also produced from the malic acid derivative by the three steps of the third step, and is represented by the general formula (3a). It is preferable to produce a 3-cyanotetrahydrofuran derivative by the method of the present invention using a tetrahydrofuran derivative, and then produce a 3-aminomethyltetrahydrofuran derivative.
- RR 2 , R 3 , R 8 and R 9 may be the same or different and each represent a hydrogen atom or a hydrocarbon group having 1 to 4 carbon atoms).
- R 8 and R 9 may be the same or different and each represent a hydrogen atom or a hydrocarbon group having 1 to 4 carbon atoms.
- RR 2 and R 3 may be the same or different and represent a hydrogen atom or a hydrocarbon group having 1 or 4 carbon atoms.
- RR 2 and R 3 may be the same or different and represent a hydrogen atom or a hydrocarbon group having 1 or 4 carbon atoms.
- R 3 represents a hydrogen atom or a hydrocarbon group having 1 to 4 carbon atoms which may be the same or different.
- X represents a halogen atom, an alkylsulfonate group having 1 to 6 carbon atoms or an arylsulfonate group having 6 to 12 carbon atoms.
- a malic acid derivative represented by the general formula (4) is used as a raw material.
- R 2, R 3 is the formula in (1), the same meaning as R 2, R 3.
- R 9 represents a hydrogen atom or a hydrocarbon group having 1 to 4 carbon atoms.
- malic acid derivatives include, for example, malic acid and, for example, citramalic acid (2-methylmalic acid), 2-ethylmalic acid, 3,3-dimethylmalic acid, and the like, and Z or Malic acid substituted at the 3-position with a hydrocarbon group, for example, monoester or diester of malic acid such as monoisopropyl malate, dimethyl malate, and getyl malate, for example, dimethyl citramalate, monobutyl citramalate, and dimethyl 3-ethylmalate Any examples include monoesters or diesters of malic acid in which the 2- and Z- or 3-positions are substituted with a hydrocarbon group.
- malic acid derivatives have an asymmetric carbon
- the malic acid derivatives used in the present invention may be optically active or racemic.
- malic acid more preferably malic acid, is preferably malic acid monoester or malic acid diester.
- the —COOR 8 and —COOR 9 groups of the malic acid derivative represented by the general formula (4) are reduced and represented by the general formula (5) Produces triols.
- R 2, R 3 is the formula in (1), the same meaning as R 2, R 3. More specifically, such triols include 1,2,4-butanetriol and, for example, 2-methyl-1,2,4-butanetriol and 3-butyl-1,2,4-butantriol. Examples thereof include 1,2,4-butanthrol in which the 2-position and the Z-position or the 3-position are substituted with a hydrocarbon group.
- the triols obtained in the first step of the present invention correspond to the malic acid derivative used, and the hydrogen atom or carbon atom at the 2- and 3-position of the malic acid derivative used.
- the hydride group and the hydrogen atom or hydrocarbon group at the 2- and 3-positions of the resulting triols are the same.
- malic acid or malic acid mono- or diester is used as the malic acid derivative
- 1,2,4-butanetriol power is used.
- citramalic acid (2-methyllingoic acid) is used, 2-methyl 1,2 , 4 Butanetriol force
- dimethyl 3-ethylmalate is used, 3-ethyl-1,2,4-butanetriol is obtained.
- the -COOR 8 group and -COOR 9 group of the malic acid derivative represented by the general formula (4) are reduced by, for example, electrolysis.
- a reduction method, a reduction method using a metal hydride, a reduction method using hydrogen in the presence of a hydrogenation catalyst, and the like can be given.
- Examples of the metal hydride in the case of reduction with a metal hydride include, specifically, hydrogenation of lithium aluminum hydride, lithium trimethoxyaluminum hydride, aluminum hydride, diisobutylaluminum hydride, and the like.
- Aluminum compounds include, for example, borohydride compounds such as diborane, lithium borohydride and sodium borohydride.
- the amount used in the case of reduction with a metal hydride is usually in the range of 2 to 10 mol, preferably 3 to 6 mol, per mol of malic acid derivative.
- any catalyst in the case of reduction with hydrogen in the presence of a hydrogenation catalyst, any catalyst can be used as long as it catalyzes the reaction of reducing the carboxyl group or ester group of the malic acid derivative of the present invention to a hydroxyl group with molecular hydrogen.
- Such compounds may be used, but usually, at least one metal or metal compound selected from Group 7 to Group 13 of the periodic table is preferably used.
- the specific examples of the hydrogenation catalyst and the amount used are the same as those of the hydrogenation catalyst exemplified in the method for reducing the cyano group of the 3 cyanotetrahydrofuran derivative represented by the general formula (1) and the amount used. Can be exemplified.
- the hydrogenation catalyst is preferably a ruthenium, rhodium, palladium, copper or rhenium metal or metal compound, preferably a ruthenium or rhodium metal or metal compound. Most preferred are ruthenium metals or metal compounds.
- the first step in the preferred method of the present invention may be carried out without using a solvent, but is usually carried out in the presence of a solvent. Any solvent may be used as long as it does not inhibit the reduction reaction.
- water for example, an alcohol having 1 to 20 carbon atoms such as methanol, ethanol, and butanol is suitably used. It is also possible to use a mixture of two or more of these solvents.
- aliphatic or alicyclic hydrocarbons having 5 to 20 carbon atoms such as n-hexane, n-pentane or cyclic hexane, for example, benzene, toluene
- Aromatic hydrocarbons having 6 to 20 carbon atoms such as ethylbenzene, ethylbenzene, etc.
- aliphatic or aromatic halides having 1 to 20 carbon atoms such as chloroform, chlorobenzene, dichlorobenzene, etc.
- Ethers having 2 to 20 carbon atoms such as toluene ether, tetrahydrofuran, and ethylene glycol dimethyl ether are preferably used. Further, two or more of these solvents may be used as a mixture. Of these solvents, the use of ethers is preferred.
- water for example, alcohols having 1 to 20 carbon atoms such as methanol, ethanol, and butanol, for example, n-hexan, n-hexan Aliphatic or alicyclic hydrocarbons having 5 to 20 carbon atoms such as pentane and cyclohexane, for example, aromatic hydrocarbons having 6 to 20 carbon atoms such as benzene, toluene and ethylbenzene, such as getyl ether; Ethers having 2 to 20 carbon atoms such as diphenyl ether, tetrahydrofuran and ethylene glycol dimethyl ether are preferably used. Further, two or more of these solvents may be used as a mixture. Of these solvents, water, alcohols and ethers are preferred, and water or alcohols having 1 to 4 carbon atoms are more preferred.
- the amount of the solvent to be used is not uniform depending on the reaction conditions, but is usually in the range of 0.1 to 500 parts by weight, preferably 1 to 200 parts by weight per 1 part by weight of the malic acid derivative.
- the temperature and time during the reaction are not uniform depending on the type of malic acid derivative used and the reduction method.
- the reaction temperature is in the range of ⁇ 10 to 250 ° C. Is in the range of 10-200 ° C.
- the reaction time is usually within 150 hours, preferably in the range of 0.01 to: LOO time.
- the pressure at the time of the reaction is a force that can be carried out under any of reduced pressure, normal pressure or increased pressure.
- it is preferably carried out at normal pressure.
- it is preferably carried out under hydrogen pressure.
- the hydrogen pressure is usually in the range of 0.01 to 30 MPa gauge pressure, preferably in the range of 0.1 to 25 MPa gauge pressure.
- reaction method in the first step of the preferred method of the present invention is not particularly limited, and may be batch system, semi-batch system or continuous flow system!
- the catalyst used after completion of the reaction can be recovered by a conventional method for recovering a metal.
- a metal adsorbent such as ion-exchange resin or extracting with a solvent, or dissolved in the reaction solution. If not, it can be recovered by a solid-liquid separation method such as filtration or centrifugation.
- These recovered catalysts can be repeatedly used as the hydrogenation catalyst in the first step of the present invention. In that case, the catalyst can be reused after performing a regeneration operation of the deactivated or reduced activity catalyst. If the remaining catalyst does not affect the subsequent step of recovering the triols and Z or the second step of the method of the present invention, the reaction solution is directly provided to the next step without recovering the catalyst. Is also good.
- the triols produced in the first step of the preferred method of the present invention may be provided to the next second step after being isolated according to a conventional separation method such as distillation or the like. After distilling off only the solvent, the mixture may be subjected to the next step as a mixture, or the reaction mixture containing the solvent may be subjected to the next step as it is.
- the triols obtained in the first step are subjected to an intramolecular dehydration reaction in the presence of an acid catalyst to give a 3-hydroxyte represented by the general formula (6).
- an acid catalyst to give a 3-hydroxyte represented by the general formula (6).
- R ⁇ R 2 , R 3 in the general formula (1) have the same meanings as R 2, R 3.
- Such 3-hydroxytetrahydrofuran derivatives include 3-hydroxytetrahydrofuran and, for example, 4-ethyl ethyl 3-hydroxytetrahydrofuran, 3-methyl-3-hydroxytetrahydrofuran and the like, and the 3- or Z- or 4-position is a hydrocarbon group.
- 3-hydroxytetrahydrofuran substituted by The 3-hydroxytetrahydrofuran derivative obtained in the second step corresponds to the triols used, and the hydrogen atoms or hydrocarbon groups at the 2- and 3-positions of the triols used and the 3-hydroxytetrahydrofuran derivative obtained And the hydrogen atom or hydrocarbon group at the 4-position are the same.
- 1,2,4 butanetriol is used as triols
- 3-hydroxytetrahydrofuran for example, when 2-methyl-1,2,4 butanetriol is used, 3-methyl-3-hydroxytetrahydrofuran is obtained.
- the acid catalyst in the second step of the preferred method of the present invention may be either soluble or insoluble in the reaction mixture of either Bronsted acid or Lewis acid.
- Such an acid catalyst may be any of an organic acid, an inorganic acid and a solid acid, and more specifically, for example, hydrochloric acid, hydrobromic acid, boric acid, nitric acid, sulfuric acid, phosphoric acid, chloric acid, etc.
- Organic acids such as formic acid, acetic acid, propionic acid, chloroacetic acid, glycolic acid, benzoic acid and phthalic acid, such as methylsulfonic acid, benzenesulfonic acid, p-toluenesulfonic acid, and trifluoromethanesulfone.
- Organic sulfonic acids such as acids; for example, organic phosphoric acids such as dimethyl phosphate and phosphate phosphate; metal halides such as aluminum chloride, zinc iodide, and titanium chloride; and yttrium trifluoromethanesulfonate; Metal salts of trifluoromethanesulfonic acid such as samarium trifluoromethanesulfonate, for example, sulfonic acid type ion exchange resin Acidic ion exchange resins such as silica, magnesia, silica, alumina, silica, titer, titer, zircoa, alumina, and complex oxides comprising two or more metal oxides such as boria; For example, natural clay minerals such as acid clay, montmorillonite, and kaolin, such as diatomaceous earth, silica gel, celite, alumina, and zirconia Which carrier has phosphoric acid or sulfuric acid supported on it,
- a solid metal oxide in which antimony pentafluoride or boron trifluoride is supported on a carrier such as a monometallic oxide, for example, silica 'alumina, silica, zirconia, or graphite, can be exemplified.
- the amount of the acid catalyst to be used is usually from 0.0001 to 10 mol%, preferably from 0.001 to 5 mol% in the case of an acid soluble in the triols as the raw material in the second step.
- insoluble acids usually from 0.001 to 50% by weight, preferably from 0.1 to 20 weight 0/0.
- the second step of the preferred method of the present invention can also be carried out in the presence of a solvent.
- a solvent Any solvent may be used as long as it does not inhibit the intramolecular dehydration of triols.
- a solvent include, among those exemplified as solvents that can be used in the first step, aliphatic or alicyclic hydrocarbons having 5 to 20 carbon atoms and aromatic hydrocarbons having 6 to 20 carbon atoms Hydrocarbons, aliphatic or aromatic halogenated compounds having 1 to 20 carbon atoms, and ethers having 2 to 20 carbon atoms are preferably used. Further, two or more of these solvents may be used in combination.
- the amount of the solvent to be used varies depending on the reaction conditions, but is usually in the range of 0.1 to 500 parts by weight, preferably 1 to 200 parts by weight, per 1 part by weight of the triol.
- the reaction it is preferable to carry out the reaction while removing water generated by the intramolecular dehydration reaction out of the reaction system.
- the method for removing generated water outside the reaction system is not particularly limited.
- a method in which the reaction is performed under reduced pressure and the generated water is distilled out of the reaction system for example, a solvent azeotropic with water such as toluene.
- a method in which the reaction is carried out in the presence of an azeotropic mixture, and a method in which a dehydrating agent is present in the reaction solution, and the like, are preferred!
- the reaction temperature of the second step of the preferred method of the present invention is generally in the range of 10 to 250 ° C, preferably in the range of 30 to 200 ° C.
- the reaction time is usually within 100 hours, preferably in the range of 0.01 to 50 hours.
- the reaction can be carried out under reduced pressure, normal pressure or increased pressure. However, when the reaction is carried out while distilling off the generated water, the reaction is preferably carried out under reduced pressure.
- the reaction method of the present invention is not particularly limited, and may be any of a batch system, a semi-batch system, and a continuous flow system.
- the catalyst used after the completion of the reaction can be recovered and used repeatedly in the next reaction.
- the catalyst may be neutralized with a base such as sodium hydroxide, or in the case of a solid acid, a conventional acid is used. Separation may be performed by a solid-liquid separation method, or the process may proceed to the next purification step without neutralization or separation.
- the 3-hydroxytetrahydrofuran derivative produced in the second step of the preferred method of the present invention may be provided in the following third step after being isolated according to a conventional separation method such as distillation.
- the reaction mixture may be subjected to the next step as it is.
- the 3-hydroxytetrahydrofuran derivative obtained in the second step is reacted with a halogenating agent or an alkyl or arylsulfurizing agent, so that the hydroxyl group is halogenated or alkylated.
- a halogenating agent or an alkyl or arylsulfurizing agent so that the hydroxyl group is halogenated or alkylated.
- it is converted to arylsulfonate to produce a 3-halogenated or 3-alkyl- or arylsulfonate-tetrahydrofuran derivative represented by the general formula (3a).
- the hydrogen atom or hydrocarbon group at the 3- and 4-position is the same as the hydrogen atom or hydrocarbon group at the 3- and 4-position of the resulting 3-halogenated or 3-alkyl or arylsulfonatoedani tetrahydrofuran derivative.
- 3-hydroxytetrahydrofuran derivative as a 3-hydroxytetrahydrofuran derivative
- 3-halogenated or 3-alkyl or arylsulfonatoide tetrahydrofuranka for example, use 3-methyl-3-hydroxytetrahydrofuran, and if using drofuran, use 3-hydrogenated or 3-alkyl or arylsulfonate.
- Methyltetrahydrofuran is obtained.
- the halogenating agent in the third step of the preferred method of the present invention is any compound that can efficiently convert the hydroxy group of the 3-hydroxytetrahydrofuran derivative into a halogen group.
- halogenating agents include, for example, Experimental Chemistry Lecture Volume 20 (Chemical Society of Japan, Maruzen, 1956) and New Experimental Chemistry Lecture Volume 14 (I) (Chemical Society of Japan, (Maruzen, 1977).
- a fluorine-containing agent such as HFZ pyridine solution, 1,1,2,2-tetrafluoroethyl cetylamine, trifluorodiphenylphosphorane, etc.
- Agents for example, iodine-containing agents such as hydroiodic acid.
- halogenating agents the use of chlorinating agents is preferred, and the use of phosgene or chloridation thionyl is preferred.
- the amount of the halogenating agent used is usually in the range of 0.1 to 10 mol, preferably in the range of 0.8 to 3 mol, per 1 mol of the 3-hydroxytetrahydrofuran derivative.
- the alkyl or arylsulfonylating agent in the third step of the method of the present invention is preferably a compound capable of efficiently converting the hydroxy group of a 3-hydroxytetrahydrofuran derivative into an alkyl or arylsulfonate group.
- a compound may be used.
- alkyl or aryl sulfolating agents include, for example, those having 1 to 6 carbon atoms such as P toluenesulfonic acid, benzenesulfonic acid, methanesulfonic acid, ethanesulfonic acid, and trifluoromethanesulfonic acid.
- Alkyl sulfonic acids or aryl sulfonic acids having 6 to 12 carbon atoms for example, halides of the above-mentioned alkyl or aryl sulfonic acids such as tosyl chloride (p-toluenesulfonic acid chloride), for example, trifluoromethanesulfonic acid amm- ⁇ Ammodime salts of the above alkyl or aryl sulfonic acids, such as tetramethylammonium benzenesulfonate, p-toluenes Alkali metal salts of the above-mentioned alkyl or aryl sulfonic acids such as sodium sulfonate, for example, the above-mentioned alkyl or aryl sulfonic acid anhydrides such as p-toluenesulfonic anhydride, for example, the above-mentioned alkyl or aryl sulfonic acids such as
- alkyl or aryl sulfonating agents the use of the above-mentioned alkyl or aryl sulfonic acid halides and anhydrides is more preferable, and the above-mentioned alkyl or aryl sulfonic acid halides are more preferable.
- the amount of the alkyl or arylsulfonylating agent to be used is usually in the range of 0.1 to 10 mol, preferably 0.8 to 3 mol, per 1 mol of the 3-hydroxytetrahydrofuran derivative.
- the 3-hydroxytetrahydrofuran derivative of the present invention is reacted with a halogenating agent or an alkyl or arylsulfonylating agent, and the hydroxyl group is halogenated or alkyl or arylsulfonated, and represented by the general formula (3a).
- a method for producing a 3-halogenated or 3-alkyl or arylsulfonatotetrahydrofuran derivative a method of halogenating with a halogenating agent is more preferable, and a method of chlorinating with a chlorinating agent is preferred.
- a suitable catalyst and reaction accelerator are appropriately used.
- the catalyst and the reaction accelerator vary depending on the halogenating agent used or the alkyl or arylsulfonyl amide.For example, when phosgene or chloroaniline is used as the halogenating agent, for example, pyridine triethylamine, etc.
- amines such as N, N-dimethylformamide, amides such as N, N-dimethylacetamide for accelerating the reaction and improving the yield.
- amides such as N, N-dimethylacetamide
- an alkyl or arylsulfonic acid halide such as tosyl sulfide
- it is preferable to use an amine such as pyridine / triethylamine.
- the third step of the preferred method of the present invention can be carried out in the absence or presence of a solvent.
- the solvent may be a 3-hydroxytetrahydrofuran derivative and a halogenating agent or an alkyl or aryl sulfolating agent. Any solvent is acceptable as long as it does not inhibit the reaction.
- Specific examples of such a solvent include, among those exemplified as solvents that can be used in the first step, aliphatic or alicyclic hydrocarbons having 5 to 20 carbon atoms, and aromatic hydrocarbons having 6 to 20 carbon atoms.
- Aliphatic or aromatic amides having a carbon number of 2 to 20 such as ethyl acetate and butyl acetate; and aliphatic or aromatic esters having a carbon number of 2 to 20 such as acetonitrile and benzo-tolyl.
- aromatic-tolyls for example, aliphatic or aromatic sulfoxides having 2 to 20 carbon atoms such as dimethyl sulfoxide are preferably used.
- two or more of these solvents may be used in combination.
- the amount of the solvent to be used is not uniform depending on the reaction conditions, but it is usually in the range of 0.1 to 500 parts by weight, preferably 1 to 200 parts by weight, per 1 part by weight of the 3-hydroxytetrahydrofuran derivative.
- the reaction temperature of the third step of the preferred method of the present invention is usually in the range of -80 to 150 ° C, preferably in the range of -20 to 80 ° C.
- the reaction time is usually within 200 hours, preferably in the range from 0.01 to: L00 hours.
- the pressure during the reaction can be reduced, normal or increased.
- the reaction method of the present invention is not particularly limited, and may be a batch system, a semi-batch system, or a continuous flow system.
- the catalyst or reaction accelerator used after the completion of the reaction can be recovered and used repeatedly in the next reaction, or can be separated by a conventional separation method.
- the 3-halogenated or 3-alkyl- or arylsulfonated-tetrahydrofuran derivative produced in the third step of the present invention is isolated, for example, after isolation according to a conventional separation method such as distillation or extraction. Provided to the next step.
- Example 1 was repeated except that the same amount of 3 cyanotetrahydrofuran was used in Example 1 and the type and amount of the catalyst, the amount of 25% aqueous ammonia, the hydrogen pressure, the reaction temperature, and the reaction time were changed as shown in Table 1. The reaction and work-up were carried out as in Example 1. The results are shown in Table 1 together with the results of Example 1.
- Example 2 The reaction and post-treatment were performed in the same manner as in Example 1 except that 14.3 g of water was used instead of ammonia water in Example 1. The yield of 3-aminomethyltetrahydrofuran was 13.6%. As a by-product, in addition to the amide derivative 4.8%, a secondary amine having the following structure was formed 68.0%.
- Example 15 The reaction and post-treatment were performed in the same manner as in Example 1 except that the aqueous ammonia was not used. The yield of 3-aminomethyltetrahydrofuran was 11.1%. As a by-product, 78.5% of secondary amine was produced.
- Example 16 The reaction and post-treatment were carried out in the same manner as in Example 16, except that the kind of the solvent, the reaction temperature and the reaction time in Example 16 were changed as shown in Table 2. The results are shown in Table 2 together with the results of Example 16. Table 2 also shows the dielectric constant of each solvent.
- Example 24 The reaction and post-treatment were carried out in the same manner as in Example 16, except that no solvent was used in Example 16. Table 2 shows the results. [Example 24]
- reaction and post-treatment were performed in the same manner as in Example 16 except that the reaction temperature was 170 ° C and the reaction time was 4 hours in Example 16 using DMF as a solvent.
- the conversion was 100%, and the yield of 3-cyanotetrahydrofuran was 74.6%.
- Example 25 the reaction and post-treatment were carried out in the same manner as in Example 25 except that 24.4 g (375 mmol) of KCN was used instead of NaCN. The conversion was 80.8%, and the yield of 3-cyanotetrahydrofuran was 54.8%.
- Example 25 31.9 g (375 mmol) of acetone cyanohydrin was used in place of NaCN, and further, 41.9 g (275 mmol) of 1,8-diazabicyclo [5.4.0] The reaction and post-treatment were carried out in the same manner as in Example 25 except that) was used. The conversion was 81.7%, and the yield of 3-cyanotetrahydrofuran was 54.5%.
- Example 17 The reaction and post-treatment were carried out in the same manner as in Example 17 except that the reaction temperature was changed to 120 ° C in Example 17 using dimethyl sulfoxide (hereinafter abbreviated as DMSO) as a solvent.
- DMSO dimethyl sulfoxide
- the conversion was 98.1%, and the yield of 3-cyanotetrahydrofuran was 89.3%.
- Example 17 The reaction and post-treatment were performed in the same manner as in Example 17 except that the reaction temperature was 110 ° C and the reaction time was 8 hours in Example 17 using DMSO as a solvent. The conversion was 94.3%, and the yield of 3-cyanotetrahydrofuran was 86.3%.
- Example 25 the reaction and post-treatment were carried out in the same manner as in Example 25 except that 6-0.6 g (250 mmol) of 3- (p-toluenesulfonate) -tetrahydrofuran was used instead of 3-chlorotetrahydrofuran.
- 6-0.6 g (250 mmol) of 3- (p-toluenesulfonate) -tetrahydrofuran was used instead of 3-chlorotetrahydrofuran.
- the yield of 3 cyanotetrahydrofuran was 71.3%.
- Step 1 4-butanetriol O Lumpur 31.8 8 (30011111101), the Torue Nsuruhon acid monohydrate 0.3 g, I charged into 75mL3 Rrofurasuko with a cooling discharge pipe.
- the pressure inside the reaction system was reduced to 6.6 kPa, and the temperature inside the reactor was raised to 140 ° C. to carry out a cyclization reaction of 1,2,4-butanetriol.
- the reaction was carried out in the form of reactive distillation, and the cyclized product, 3-hydroxytetrahydrofuran, was discharged out of the reaction system together with the produced water through a cooling discharge pipe.
- Examples of each step of producing a 3-halogenated or 3-alkyl- or arylsulfonated-aniline tetrahydrofuran derivative from a malic acid derivative will be specifically described separately below.
- a 3-halogenated or 3-alkyl or arylsulfonyl tetrahydrofuran derivative can be synthesized from a malic acid derivative.
- the first step of Example 33 was the same as the first step of Example 33 except that 40 g of 5% rhodium carbon powder was used as the catalyst instead of 40 g of 5% ruthenium carbon powder, and the hydrogen pressure was changed to 16 MPa gauge pressure. Reaction and distillation were carried out similarly. The yield of 1,2,4-butanetriol was 56%.
- Example 33 In the first step of Example 33, the reaction and distillation were carried out in the same manner as the first step of Example 33, except that the reaction temperature was changed to 120 ° C and the reaction time was changed to 6 hours. The yield of 1,2,4-butanetriol was 63%.
- Example 33 In the first step of Example 33, except that 400 mL of ethanol was used instead of 400 mL of water as the solvent, the hydrogen pressure was changed to 16 MPa gauge pressure, and the reaction time was changed to 90 hours. Reaction and distillation were carried out as in the first step of 33. The yield of 1,2,4-butanetriol was 90%.
- Example 33 In the first step of Example 33, 400 mL of ethanol was used as a solvent instead of 400 mL of water, the hydrogen pressure was changed to 16 MPa gauge pressure, the reaction temperature was changed to 120 ° C, and the reaction time was changed to 70 hours. Reaction and distillation were carried out in the same manner as in the first step of Example 33 except for the above. The yield of 1,2,4-butanetriol was 90%.
- the reaction was carried out in the same manner as in the third step of Example 33 except that in the third step of Example 33, 22.lg (280 mmol) of pyridine and 50 mL of toluene were used instead of DMF. After completion of the reaction, the sulfur dioxide and hydrogen chloride generated by nitrogen bubbly are expelled, and then the precipitated pyridium salt is removed by filtration. Got. The yield was 93%.
- a 3-aminomethyltetrahydrofuran derivative useful as an agrochemical intermediate can be obtained and provided for the synthesis of agrochemicals.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
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Abstract
Description
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CA002568800A CA2568800A1 (en) | 2004-06-14 | 2005-06-02 | Process for producing 3-aminomethyltetrahydrofuran derivative |
JP2006514474A JPWO2005121111A1 (ja) | 2004-06-14 | 2005-06-02 | 3−アミノメチルテトラヒドロフラン誘導体の製造方法 |
MXPA06014250A MXPA06014250A (es) | 2004-06-14 | 2005-06-02 | Metodo para producir un derivado de 3-aminometiltetrahidrofurano. |
AU2005252060A AU2005252060A1 (en) | 2004-06-14 | 2005-06-02 | Method for producing 3-aminomethyltetrahydrofuran derivative |
US11/629,517 US20080033154A1 (en) | 2004-06-14 | 2005-06-02 | Process for Producing 3-Aminomethyltetrahydrofuran Derivative |
EP05746074A EP1780205A1 (en) | 2004-06-14 | 2005-06-02 | Method for producing 3-aminomethyltetrahydrofuran derivative |
IL179721A IL179721A0 (en) | 2004-06-14 | 2006-11-30 | Process for producing a 3 - aminomethyltetrahydrofuran derivative |
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US (1) | US20080033154A1 (ja) |
EP (1) | EP1780205A1 (ja) |
JP (1) | JPWO2005121111A1 (ja) |
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CN (1) | CN1968941A (ja) |
AU (1) | AU2005252060A1 (ja) |
CA (1) | CA2568800A1 (ja) |
IL (1) | IL179721A0 (ja) |
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WO2019154294A1 (zh) | 2018-02-06 | 2019-08-15 | 江苏恒瑞医药股份有限公司 | 吡唑并[1,5-a][1,3,5]三嗪-2-胺类衍生物、其制备方法及其在医药上的应用 |
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CN106366056B (zh) * | 2016-08-26 | 2018-12-11 | 常州市阳光药业有限公司 | 3-氨甲基四氢呋喃的制备方法 |
CN106749116B (zh) * | 2016-11-29 | 2018-10-02 | 北京怡力生物科技有限公司 | 一种3-氨基甲基四氢呋喃的制备方法 |
CN108129425B (zh) * | 2016-12-01 | 2021-06-22 | 中国科学院大连化学物理研究所 | 一种2,5-二甲醛肟呋喃催化加氢合成2,5-二甲胺基呋喃的方法 |
CN111303083A (zh) * | 2020-03-31 | 2020-06-19 | 安徽中羰碳一工业技术有限责任公司 | 一种3-氨甲基四氢呋喃的合成方法 |
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US4261901A (en) * | 1979-09-10 | 1981-04-14 | E. I. Du Pont De Nemours And Company | Synthesis of tetrahydrofuran |
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- 2005-06-02 WO PCT/JP2005/010171 patent/WO2005121111A1/ja active Application Filing
- 2005-06-02 CA CA002568800A patent/CA2568800A1/en not_active Abandoned
- 2005-06-02 JP JP2006514474A patent/JPWO2005121111A1/ja active Pending
- 2005-06-02 EP EP05746074A patent/EP1780205A1/en not_active Withdrawn
- 2005-06-02 US US11/629,517 patent/US20080033154A1/en not_active Abandoned
- 2005-06-02 KR KR1020087001434A patent/KR20080014151A/ko active IP Right Grant
- 2005-06-02 KR KR1020087001433A patent/KR20080014150A/ko not_active Application Discontinuation
- 2005-06-02 AU AU2005252060A patent/AU2005252060A1/en not_active Abandoned
- 2005-06-02 CN CNA2005800193751A patent/CN1968941A/zh active Pending
- 2005-06-10 TW TW094119293A patent/TWI292398B/zh active
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WO2019154294A1 (zh) | 2018-02-06 | 2019-08-15 | 江苏恒瑞医药股份有限公司 | 吡唑并[1,5-a][1,3,5]三嗪-2-胺类衍生物、其制备方法及其在医药上的应用 |
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KR20080014150A (ko) | 2008-02-13 |
MXPA06014250A (es) | 2007-03-12 |
CA2568800A1 (en) | 2005-12-22 |
TWI292398B (en) | 2008-01-11 |
KR20080014151A (ko) | 2008-02-13 |
US20080033154A1 (en) | 2008-02-07 |
JPWO2005121111A1 (ja) | 2008-04-10 |
TW200540165A (en) | 2005-12-16 |
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