WO2010119902A1 - 2-アルキル-3-アミノチオフェン誘導体の製造方法 - Google Patents
2-アルキル-3-アミノチオフェン誘導体の製造方法 Download PDFInfo
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- WO2010119902A1 WO2010119902A1 PCT/JP2010/056702 JP2010056702W WO2010119902A1 WO 2010119902 A1 WO2010119902 A1 WO 2010119902A1 JP 2010056702 W JP2010056702 W JP 2010056702W WO 2010119902 A1 WO2010119902 A1 WO 2010119902A1
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- FVPKGKWIAOEZOD-UHFFFAOYSA-N CC(C)CC(C)C(CN=O)OC(C)=O Chemical compound CC(C)CC(C)C(CN=O)OC(C)=O FVPKGKWIAOEZOD-UHFFFAOYSA-N 0.000 description 1
- NDOLUSKPYAFSGG-UHFFFAOYSA-N CC(C)CC(C)C(C[N+]([O-])=O)OC Chemical compound CC(C)CC(C)C(C[N+]([O-])=O)OC NDOLUSKPYAFSGG-UHFFFAOYSA-N 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D333/00—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom
- C07D333/02—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings
- C07D333/04—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings not substituted on the ring sulphur atom
- C07D333/26—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings not substituted on the ring sulphur 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
- C07D333/30—Hetero atoms other than halogen
- C07D333/36—Nitrogen atoms
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C201/00—Preparation of esters of nitric or nitrous acid or of compounds containing nitro or nitroso groups bound to a carbon skeleton
- C07C201/06—Preparation of nitro compounds
- C07C201/12—Preparation of nitro compounds by reactions not involving the formation of nitro groups
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C201/00—Preparation of esters of nitric or nitrous acid or of compounds containing nitro or nitroso groups bound to a carbon skeleton
- C07C201/06—Preparation of nitro compounds
- C07C201/14—Preparation of nitro compounds by formation of nitro groups together with reactions not involving the formation of nitro groups
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C205/00—Compounds containing nitro groups bound to a carbon skeleton
- C07C205/07—Compounds containing nitro groups bound to a carbon skeleton the carbon skeleton being further substituted by halogen atoms
- C07C205/08—Compounds containing nitro groups bound to a carbon skeleton the carbon skeleton being further substituted by halogen atoms having nitro groups bound to acyclic carbon atoms
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C205/00—Compounds containing nitro groups bound to a carbon skeleton
- C07C205/13—Compounds containing nitro groups bound to a carbon skeleton the carbon skeleton being further substituted by hydroxy groups
- C07C205/14—Compounds containing nitro groups bound to a carbon skeleton the carbon skeleton being further substituted by hydroxy groups having nitro groups and hydroxy groups bound to acyclic carbon atoms
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C205/00—Compounds containing nitro groups bound to a carbon skeleton
- C07C205/13—Compounds containing nitro groups bound to a carbon skeleton the carbon skeleton being further substituted by hydroxy groups
- C07C205/14—Compounds containing nitro groups bound to a carbon skeleton the carbon skeleton being further substituted by hydroxy groups having nitro groups and hydroxy groups bound to acyclic carbon atoms
- C07C205/15—Compounds containing nitro groups bound to a carbon skeleton the carbon skeleton being further substituted by hydroxy groups having nitro groups and hydroxy groups bound to acyclic carbon atoms of a saturated carbon skeleton
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C205/00—Compounds containing nitro groups bound to a carbon skeleton
- C07C205/39—Compounds containing nitro groups bound to a carbon skeleton the carbon skeleton being further substituted by esterified hydroxy groups
- C07C205/40—Compounds containing nitro groups bound to a carbon skeleton the carbon skeleton being further substituted by esterified hydroxy groups having nitro groups and esterified hydroxy groups bound to acyclic carbon atoms of the carbon skeleton
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D333/00—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom
- C07D333/02—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings
- C07D333/04—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings not substituted on the ring sulphur atom
- C07D333/26—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings not substituted on the ring sulphur 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
- C07D333/42—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings not substituted on the ring sulphur 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 with nitro or nitroso radicals directly attached to ring carbon atoms
Definitions
- the present invention relates to a method for producing 2-alkyl-3-aminothiophene and a production intermediate thereof.
- a production method for producing 2-alkyl-3-aminothiophene a production method by reacting a 3-aminothiophene derivative with various carbonyl compounds to produce a 2-alkenyl-3-aminothiophene derivative and undergoing a reduction step is disclosed.
- a production method for producing 2-alkyl-3-nitrothiophene a production method is disclosed in which 3-nitrothiophene and Grignard reagent are reacted and then oxidized (for example, TETRAHEDORN Vol. 44, No. 20 (1988). (Year) page 6435).
- An object of the present invention is to provide a method for efficiently producing 2-alkyl-3-aminothiophene.
- the present inventor has intensively studied, discovered a method for producing a novel 2-alkyl-3-nitrothiophene derivative, and reduced the efficiency of the 2-alkyl-3-nitrothiophene derivative.
- the present invention has been completed as a method for producing a typical 2-alkyl-3-aminothiophene derivative. That is, the present invention is as follows.
- R is an alkyl group having 1 to 18 carbon atoms and an alkyl group having 1 to 10 carbon atoms which may be substituted with an alkyl group having 1 to 10 carbon atoms or a cycloalkyl group having 3 to 10 carbon atoms.
- a cycloalkyl group having 3 to 10 carbon atoms which may be substituted with a group or a cycloalkyl group having 3 to 10 carbon atoms, or an alkyl group having 1 to 10 carbon atoms or a cycloalkyl group having 3 to 10 carbon atoms.
- X is a hydroxy group, a halogen atom, or the following general formula (2)
- A represents a carbon atom or a sulfur atom.
- n represents 1.
- Q represents an alkyl group having 1 to 10 carbon atoms.
- # represents a bonding position).
- R is the same as R in the general formula (1)] (A) to obtain a compound represented by: A step (B) of reducing the compound represented by the general formula (3), and the following general formula (4):
- R is the same as R in the general formula (1)]
- a method for producing a 2-alkyl-3-aminothiophene derivative represented by ⁇ 2> R is the following general formula (6)
- R 1 represents a hydrogen atom or a linear or branched alkyl group having 1 to 6 carbon atoms. # Represents a bonding position.
- the manufacturing method as described in said ⁇ 1> which is a substituent represented by.
- ⁇ 3> The production method according to ⁇ 1> or ⁇ 2>, wherein R is a 1,3-dimethylbutyl group.
- the step (A) is represented by the following general formula (8)
- R is the same as R in General Formula (1).
- Xa represents a halogen atom or a substituent represented by the general formula (2).
- ⁇ 1> to ⁇ 3 The manufacturing method of any one of>.
- ⁇ 5> From the compound represented by the general formula (1) in the step (A), the following general formula (5)
- R is the same as R in General Formula (1).
- R is the same as R in General Formula (1), and X 7 represents a halogen atom or a substituent represented by General Formula (2).
- X 7 represents a halogen atom or a substituent represented by General Formula (2).
- R is the same as R in General Formula (1).
- the production method according to any one of ⁇ 1> to ⁇ 5>, further including a step of obtaining a compound represented by the formula: ⁇ 7> The following general formula (9)
- R is the same as R in General Formula (1).
- R is the same as R in General Formula (1).
- R is the same as R in General Formula (1).
- the production method according to any one of ⁇ 1> to ⁇ 5>, further including a step of obtaining a compound represented by the formula: ⁇ 10> The following general formula (9)
- R is the same as R in General Formula (1).
- the manufacturing method as described in said ⁇ 10> which further includes the process of obtaining the compound represented by the said General formula (9) by making the compound represented by and nitromethane react.
- ⁇ 12> The following general formula (9)
- R represents an alkyl group having 1 to 18 carbon atoms which may be substituted with an alkyl group having 1 to 10 carbon atoms or a cycloalkyl group having 3 to 10 carbon atoms, or an alkyl group having 1 to 10 carbon atoms.
- a cycloalkyl group having 3 to 10 carbon atoms which may be substituted with a group or a cycloalkyl group having 3 to 10 carbon atoms, or an alkyl group having 1 to 10 carbon atoms or a cycloalkyl group having 3 to 10 carbon atoms.
- the hydroxynitroalkane derivative represented by this. ⁇ 13> R in the general formula (9) is represented by the following general formula (6).
- R 1 represents a hydrogen atom or a linear or branched alkyl group having 1 to 6 carbon atoms. # Represents a bonding position.
- R is an alkyl group having 1 to 18 carbon atoms and an alkyl group having 1 to 10 carbon atoms which may be substituted with an alkyl group having 1 to 10 carbon atoms or a cycloalkyl group having 3 to 10 carbon atoms.
- X 7 represents a halogen atom or the following general formula (2)
- A represents a carbon atom or a sulfur atom
- n represents 1 when A is a carbon atom
- n represents 1 or 2 when A is a sulfur atom
- Q represents 1 to 2 carbon atoms. It may be substituted with an alkyl group having 10 carbon atoms, a cycloalkyl group having 3 to 10 carbon atoms, a haloalkyl group having 1 to 10 carbon atoms, a hydrocarbyloxy group having 1 to 10 carbon atoms, or an alkyl group having 1 to 6 carbon atoms. Represents an aryl group, and # represents a bonding position.
- the nitroalkane derivative represented by this. ⁇ 16> R in the general formula (7) is represented by the following general formula (6).
- R 1 represents a hydrogen atom or a linear or branched alkyl group having 1 to 6 carbon atoms. # Represents a bonding position.
- the nitroalkane derivative according to ⁇ 15> which is a substituent represented by the formula: ⁇ 17>
- R represents an alkyl group having 1 to 18 carbon atoms and an alkyl group having 1 to 10 carbon atoms which may be substituted with an alkyl group having 1 to 10 carbon atoms or a cycloalkyl group having 3 to 10 carbon atoms.
- the nitroolefin derivative represented by this. ⁇ 19> R in the general formula (11) is represented by the following general formula (6).
- R 1 represents a hydrogen atom or a linear or branched alkyl group having 1 to 6 carbon atoms. # Represents a bonding position.
- the nitroolefin derivative as described in said ⁇ 18> which is a substituent represented by these.
- R in the general formula (11) is a 1,3-dimethylbutyl group.
- R represents an alkyl group having 1 to 18 carbon atoms which may be substituted with an alkyl group having 1 to 10 carbon atoms or a cycloalkyl group having 3 to 10 carbon atoms, or an alkyl group having 1 to 10 carbon atoms.
- a cycloalkyl group having 3 to 10 carbon atoms which may be substituted with a group or a cycloalkyl group having 3 to 10 carbon atoms, or an alkyl group having 1 to 10 carbon atoms or a cycloalkyl group having 3 to 10 carbon atoms.
- the 3-hydroxy-4-nitrotetrahydrothiophene derivative represented by this. ⁇ 22> R in the general formula (8) is represented by the following general formula (6).
- R 1 represents a hydrogen atom or a linear or branched alkyl group having 1 to 6 carbon atoms. # Represents a bonding position.
- R is an alkyl group having 1 to 18 carbon atoms and an alkyl group having 1 to 10 carbon atoms which may be substituted with an alkyl group having 1 to 10 carbon atoms or a cycloalkyl group having 3 to 10 carbon atoms.
- a cycloalkyl group having 3 to 10 carbon atoms which may be substituted with a group or a cycloalkyl group having 3 to 10 carbon atoms, or an alkyl group having 1 to 10 carbon atoms or a cycloalkyl group having 3 to 10 carbon atoms.
- X is a hydroxy group, a halogen atom, or the following general formula (2)
- A represents a carbon atom or a sulfur atom
- n represents 1 when A is a carbon atom
- n represents 1 or 2 when A is a sulfur atom
- Q represents 1 to 2 carbon atoms. It may be substituted with an alkyl group having 10 carbon atoms, a cycloalkyl group having 3 to 10 carbon atoms, a haloalkyl group having 1 to 10 carbon atoms, a hydrocarbyloxy group having 1 to 10 carbon atoms, or an alkyl group having 1 to 6 carbon atoms. Represents an aryl group, and # represents a bonding position.
- R in the general formula (1) is the following general formula (6) [In General Formula (6), R 1 represents a hydrogen atom or a linear or branched alkyl group having 1 to 6 carbon atoms. # Represents a bonding position.
- the following general formula (5) The following general formula (5)
- R is an alkyl group having 1 to 18 carbon atoms which may be substituted with an alkyl group having 1 to 10 carbon atoms or a cycloalkyl group having 3 to 10 carbon atoms, or an alkyl group having 1 to 10 carbon atoms.
- a cycloalkyl group having 3 to 10 carbon atoms which may be substituted with a group or a cycloalkyl group having 3 to 10 carbon atoms, or an alkyl group having 1 to 10 carbon atoms or a cycloalkyl group having 3 to 10 carbon atoms.
- the 3-nitro-2,5-dihydrothiophene derivative represented by this. ⁇ 28> R in the general formula (5) is the following general formula (6)
- R 1 represents a hydrogen atom or a linear or branched alkyl group having 1 to 6 carbon atoms. # Represents a bonding position.
- R represents an alkyl group having 1 to 18 carbon atoms which may be substituted with an alkyl group having 1 to 10 carbon atoms or a cycloalkyl group having 3 to 10 carbon atoms, or an alkyl group having 1 to 10 carbon atoms.
- a cycloalkyl group having 3 to 10 carbon atoms which may be substituted with a group or a cycloalkyl group having 3 to 10 carbon atoms, or an alkyl group having 1 to 10 carbon atoms or a cycloalkyl group having 3 to 10 carbon atoms.
- the 2-alkyl-3-nitrothiophene derivative represented by this. ⁇ 31> R in the general formula (3) is the following general formula (6)
- R 1 represents a hydrogen atom or a linear or branched alkyl group having 1 to 6 carbon atoms. # Represents a bonding position.
- the intermediate for producing a pharmaceutical and agrochemical is represented by the following general formula (12):
- Y and Z each independently represent a halogen atom or a hydrogen atom.
- R is an alkyl group having 1 to 10 carbon atoms, an alkyl group having 1 to 18 carbon atoms, an alkyl group having 1 to 10 carbon atoms, or an alkyl group having 3 to 10 carbon atoms which may be substituted with an alkyl group having 1 to 10 carbon atoms or a cycloalkyl group having 3 to 10 carbon atoms.
- a cycloalkyl group having 3 to 10 carbon atoms which may be substituted with a cycloalkyl group, or an alkyl group having 1 to 10 carbon atoms or a cycloalkyl group having 3 to 10 carbon atoms which may be substituted with 6 to 12 carbon atoms Represents a bicycloalkyl group.
- R in the general formula (12) is represented by the following general formula (6).
- R 1 represents a hydrogen atom or a linear or branched alkyl group having 1 to 6 carbon atoms. # Represents a bonding position.
- R in the general formula (12) is a 1,3-dimethylbutyl group
- Y is a fluorine atom
- Z is a hydrogen atom.
- the method for producing a 2-alkyl-3-aminothiophene derivative represented by the following general formula (4) of the present invention comprises oxidizing a compound represented by the following general formula (1) to obtain a compound represented by the following general formula (3):
- the process (A) which obtains the compound represented, and the process (B) which reduces the compound represented by the said General formula (3) are included.
- R is an alkyl group having 1 to 10 carbon atoms or a cycloalkyl group having 3 to 10 carbon atoms that may be substituted with 1 to 18 carbon atoms.
- X represents a hydroxy group, a halogen atom, or a substituent represented by the general formula (2).
- A represents a carbon atom or a sulfur atom
- n represents 1 when A is a carbon atom
- n represents 1 or 2 when A is a sulfur atom.
- Q is an alkyl group having 1 to 10 carbon atoms, a cycloalkyl group having 3 to 10 carbon atoms, a haloalkyl group having 1 to 10 carbon atoms, a hydrocarbyloxy group having 1 to 10 carbon atoms, or an alkyl group having 1 to 6 carbon atoms.
- the R is preferably a substituent represented by the following general formula (6), and the R is more preferably a 1,3-dimethylbutyl group.
- R 1 represents a hydrogen atom or a linear or branched alkyl group having 1 to 6 carbon atoms.
- # represents a bonding position.
- step (A) includes a step of obtaining a compound represented by the following general formula (1a) from a compound represented by the following general formula (8), and a compound represented by the above general formula (Ia). And a step of obtaining a compound represented by the general formula (3).
- R is the same as R in the general formula (1).
- Xa represents a halogen atom or a substituent represented by the general formula (2).
- step (A) includes a step (A-1) of obtaining a compound represented by the following general formula (5) from the compound represented by the general formula (1), and the general formula (5). It is also preferable that the method further comprises a step (A-2) of obtaining a compound represented by the general formula (3) from the compound obtained.
- R is the same as R in general formula (1).
- the production method of the present invention comprises reacting a compound represented by the following general formula (7) with ⁇ -mercaptoacetaldehyde or 1,4-dithian-2,5-diol, Preferably, the method further includes a step of obtaining the represented compound. Further, it is more preferable to include a step of obtaining the compound represented by the general formula (7) from the compound represented by the following general formula (9).
- the compound represented by the general formula (9) is represented by the following general formula: More preferably, the method further includes a step obtained by reacting the compound represented by (10) with nitromethane.
- R is the same as R in General Formula (1), and X 7 represents a halogen atom or a substituent represented by General Formula (2).
- the production method of the present invention comprises reacting a compound represented by the following general formula (11) with ⁇ -mercaptoacetaldehyde or 1,4-dithian-2,5-diol, and the following general formula (8): It is preferable to further include a step of obtaining the represented compound. More preferably, the method further comprises a step of obtaining the compound represented by the general formula (11) by dehydrating a compound represented by the following general formula (9), which is represented by the general formula (9). It is more preferable to further include a step of obtaining the compound by reacting a compound represented by the following general formula (10) with nitromethane.
- R is the same as R in general formula (1).
- An alkyl group having 1 to 10 carbon atoms which may be substituted with an alkyl group having 1 to 10 carbon atoms or a cycloalkyl group having 3 to 10 carbon atoms represented by R; Substituted with an alkyl group or an optionally substituted cycloalkyl group having 3 to 10 carbon
- an alkyl group having 1 to 10 carbon atoms represented by Q an alkyl group having 1 to 10 carbon atoms represented by Q, a cycloalkyl group having 3 to 10 carbon atoms, a haloalkyl group having 1 to 10 carbon atoms, and a hydrocarbyloxy having 1 to 10 carbon atoms
- the aryl group which may be substituted with an alkyl group having 1 to 6 carbon atoms include, for example, methyl group, ethyl group, propyl group, butyl group, pentyl group, hexyl group, isopropyl group, isobutyl group, sec-butyl Group, tert-butyl group, 1-methylbutyl group, 2-methylbutyl group, 3-methylbutyl group, 1,1-dimethylpropyl group, 2,2-dimethylpropyl group, 1,2-dimethylpropyl group, 1-methylpentyl Group, 2-methylpentyl group, 3-methylpentyl
- aldehydes represented by general formula (10), hydroxynitroalkanes represented by general formula (9), nitroolefins represented by general formula (11), and general formula (7) Nitroalkanes, 3-hydroxy-4-nitrotetrahydrothiophenes represented by general formula (8), 3-nitro-2,5-dihydrothiophenes represented by general formula (5), general formula (1) 3-nitrotetrahydrothiophenes represented by general formula (3), 2-alkyl-3-nitrothiophene derivatives represented by general formula (3), and 2-alkyl-3-aminothiophenes represented by general formula (4): In the case where diastereoisomers are present, any one of them, or a mixture of any two or more of them may be used, and the structure is not limited.
- aldehydes represented by general formula (10), hydroxynitroalkanes represented by general formula (9), nitroolefins represented by general formula (11), and general formula (7) Nitroalkanes, 3-hydroxy-4-nitrotetrahydrothiophenes represented by general formula (8), 3-nitro-2,5-dihydrothiophenes represented by general formula (5), general formula (1) 3-nitrotetrahydrothiophenes represented by general formula (3), 2-alkyl-3-nitrothiophene derivatives represented by general formula (3), and 3-aminoalkylthiophenes represented by general formula (4) are enantiomers.
- any one of the compounds or a mixture of both in any ratio may be used, and the structure is not limited.
- the nitroolefin represented by the general formula (11) may be either a cis isomer or a trans isomer, or a mixture of both in any ratio, and the structure is not limited.
- the aldehyde represented by the general formula (10) used as a starting compound in the present invention is commercially available in many cases and can be easily obtained. Also, various production methods are known for those that are difficult to obtain, and can be produced by the method disclosed in JORNAL OF AMERICAN CHEMICAL SOCIETY Vol. 75, No. 20 (1953), page 4995, for example.
- the hydroxynitroalkane represented by the general formula (9) reacts the aldehyde represented by the general formula (10) with nitromethane in the presence of a base. Is obtained.
- the base used may be either an inorganic base or an organic base.
- the inorganic base alkali metal hydroxides, alkaline earth metal hydroxides, alkali metal carbonates, ammonia and the like can be used.
- the organic base trialkylamine, pyridines and the like can be used.
- the base include lithium hydroxide, sodium hydroxide, potassium hydroxide, calcium hydroxide, barium hydroxide, sodium carbonate, potassium carbonate, sodium bicarbonate, potassium bicarbonate, liquid ammonia, aqueous ammonia solution, triethylamine, triethylamine, Examples include butylamine, pyridine, collidine, 2,6-lutidine, and 4-dimethylaminopyridine. These bases may be used alone or in combination of two or more at any ratio.
- a solvent can be appropriately used, but the solvent to be used is not particularly limited.
- the solvent include alkyl halides such as dichloromethane and chloroform, aromatic hydrocarbons such as benzene, toluene and xylene, hydrocarbons such as hexane, heptane and cyclohexane, diethyl ether, diisopropyl ether, 1,2- Ethers such as dimethoxyethane, tetrahydrofuran and dioxane, esters such as ethyl acetate and butyl acetate, amides such as N, N-dimethylformamide, N, N-dimethylacetamide and N-methylpyrrolidone, N, N′-dimethyl Examples include imidazolidinone, acetonitrile, water and the like. Each of these solvents may be used alone, but two
- the amount of the solvent used in the reaction is not particularly limited, but it is preferably 50 times or less with respect to the weight of the aldehyde represented by the general formula (10) from the economical viewpoint. Moreover, although there is no restriction
- the nitroolefin represented by the general formula (11) can be obtained by dehydrating the hydroxynitroalkane represented by the general formula (9). .
- an acid may be used to assist the reaction.
- the acid used may be either an inorganic acid or an organic acid, and may be either a Bronsted acid or a Lewis acid.
- sulfuric acid fuming sulfuric acid, chlorosulfuric acid, nitric acid, fuming nitric acid, hydrochloric acid, phosphoric acid, hydrogen bromide, acetic acid, trifluoroacetic acid, oxalic acid, tartaric acid, fumaric acid, maleic acid, benzoic acid, methanesulfone Examples thereof include acid, benzenesulfonic acid, tosylic acid, trifluoromethanesulfonic acid, aluminum chloride, titanium tetrachloride, and boron trifluoride diethyl ether complex. These acids may be used alone or in combination of two or more at any ratio.
- a base may be used to assist the reaction.
- the base used may be either an inorganic base or an organic base.
- the inorganic base alkali metal hydroxides, alkaline earth metal hydroxides, alkali metal carbonates, ammonia and the like can be used.
- the organic base trialkylamine, pyridines and the like can be used.
- Examples include pyridine, collidine, 2,6-lutidine, 4-dimethylaminopyridine, and the like. These bases may be used alone or in combination of two or more at an arbitrary ratio.
- a known dehydrating agent may be used to assist the reaction.
- Dehydrating agents used include carboxylic acid halides such as acetyl chloride and benzoyl chloride, carboxylic acid anhydrides such as acetic anhydride and trifluoroacetic anhydride, sulfonic acid halides such as toluenesulfonyl chloride, methanesulfonyl chloride, trifluoromethanesulfonyl chloride, and chloride.
- a solvent can be appropriately used, but the solvent to be used is not particularly limited.
- the solvent include alkyl halides such as dichloromethane and chloroform, aromatic hydrocarbons such as benzene, toluene and xylene, hydrocarbons such as hexane, heptane and cyclohexane, diethyl ether, diisopropyl ether, 1,2- Ethers such as dimethoxyethane, tetrahydrofuran and dioxane, esters such as ethyl acetate and butyl acetate, amides such as N, N-dimethylformamide, N, N-dimethylacetamide and N-methylpyrrolidone, N, N′-dimethyl Examples include imidazolidinone, acetonitrile, water and the like.
- the amount of the solvent used for the reaction is not particularly limited, but is preferably 50 times or less with respect to the weight of the hydroxynitroalkane represented by the general formula (9) from the economical viewpoint.
- the reaction temperature is not particularly limited, but it is preferably from the melting point to the boiling point of the solvent from the viewpoint of operation efficiency.
- the nitroalkane represented by the general formula (7) is converted from the hydroxynitroalkane represented by the general formula (9) by a known esterifying agent or halogen. It is obtained by reacting with an agent.
- a base may be used to assist the reaction.
- the base used may be either an inorganic base or an organic base.
- the inorganic base alkali metal hydroxides, alkaline earth metal hydroxides, alkali metal carbonates, ammonia and the like can be used.
- the organic base trialkylamine, pyridines and the like can be used.
- bases may be used alone or in combination of two or more at an arbitrary ratio.
- esterifying agent or halogenating agent used in the method for producing a nitroalkane represented by the general formula (7) of the present invention include carboxylic acid halides such as acetyl chloride and benzoyl chloride, acetic anhydride, trifluoroacetic anhydride, and the like.
- Carboxylic anhydride sulfonyl halides such as toluenesulfonyl chloride, methanesulfonyl chloride, trifluoromethanesulfonyl chloride, thionyl chloride, sulfuryl chloride, oxalic chloride, phosgene, diphosgene, triphosgene, phosphorus pentachloride, phosphorus trichloride, oxy Examples include phosphorus chloride and phosphorus tribromide. These esterifying agents or halogenating agents may be used alone or in combination of two or more at any ratio.
- a solvent can be appropriately used, but the solvent to be used is not particularly limited.
- the solvent include alkyl halides such as dichloromethane and chloroform, aromatic hydrocarbons such as benzene, toluene and xylene, hydrocarbons such as hexane, heptane and cyclohexane, diethyl ether, diisopropyl ether, 1,2- Ethers such as dimethoxyethane, tetrahydrofuran and dioxane, esters such as ethyl acetate and butyl acetate, amides such as N, N-dimethylformamide, N, N-dimethylacetamide and N-methylpyrrolidone, N, N′-dimethyl Examples include imidazolidinone, acetonitrile, water and the like. Each of these solvents may be used alone, but two
- the amount of the solvent used in the reaction is not particularly limited, but is preferably 50 times or less with respect to the weight of the hydroxynitroalkane represented by the general formula (9) from the economical viewpoint.
- the reaction temperature is not particularly limited, but it is preferably from the melting point to the boiling point of the solvent from the viewpoint of operation efficiency.
- the 3-hydroxy-4-nitrotetrahydrothiophenes represented by the general formula (8) are nitroolefins represented by the general formula (11) or It can be obtained by reacting a nitroalkane represented by the formula (7) with ⁇ -mercaptoacetaldehyde or 1,4-dithian-2,5-diol.
- the equivalent of ⁇ -mercaptoacetaldehyde and 1,4-dithian-2,5-diol used for the nitroolefin represented by the general formula (11) or the nitroalkane represented by the general formula (7) Is not particularly limited, but it is preferably 3 equivalents or less (in terms of ⁇ -mercaptoaldehyde) from an economical viewpoint.
- ⁇ -mercaptoacetaldehyde itself can be used as a monomer
- 1,4-dithian-2,5-diol which is a commercially available dimer, is more preferably used.
- a base may be used for assisting the reaction.
- the base used may be either an inorganic base or an organic base.
- the inorganic base alkali metal hydroxides, alkaline earth metal hydroxides, alkali metal carbonates, ammonia and the like can be used.
- the organic base trialkylamine, pyridines and the like can be used.
- the base include lithium hydroxide, sodium hydroxide, potassium hydroxide, calcium hydroxide, barium hydroxide, sodium carbonate, potassium carbonate, sodium bicarbonate, potassium bicarbonate, liquid ammonia, aqueous ammonia solution, triethylamine, triethylamine, Examples include butylamine, pyridine, collidine, 2,6-lutidine, and 4-dimethylaminopyridine. These bases may be used alone or in combination of two or more at any ratio.
- a solvent can be appropriately used, but the solvent to be used is not particularly limited.
- the solvent include alkyl halides such as dichloromethane and chloroform, aromatic hydrocarbons such as benzene, toluene and xylene, hydrocarbons such as hexane, heptane and cyclohexane, diethyl ether, diisopropyl ether, 1,2- Ethers such as dimethoxyethane, tetrahydrofuran and dioxane, esters such as ethyl acetate and butyl acetate, amides such as N, N-dimethylformamide, N, N-dimethylacetamide and N-methylpyrrolidone, N, N′-dimethyl Examples include imidazolidinone, acetonitrile, water and the like. Each of these solvents
- the amount of the solvent used for the reaction is not particularly limited, but is 50% based on the weight of the nitroolefin represented by the general formula (11) or the nitroalkane represented by the general formula (7) from the economical viewpoint. It is preferable that the amount is not more than double.
- the reaction temperature is not particularly limited, but it is preferably from the melting point to the boiling point of the solvent from the viewpoint of operation efficiency.
- the 3-nitro-2,5-dihydrothiophene represented by the general formula (5) is converted into the 3-hydroxy represented by the general formula (8). It can be obtained by dehydrating -4-nitrotetrahydrothiophenes.
- an acid may be used to assist the reaction.
- the acid used may be either an inorganic acid or an organic acid, and may be either a Bronsted acid or a Lewis acid.
- acids include sulfuric acid, fuming sulfuric acid, chlorosulfuric acid, nitric acid, fuming nitric acid, hydrochloric acid, phosphoric acid, hydrogen bromide, acetic acid, trifluoroacetic acid, oxalic acid, tartaric acid, fumaric acid, maleic acid, benzoic acid, methanesulfone.
- Examples thereof include acid, benzenesulfonic acid, tosylic acid, trifluoromethanesulfonic acid, aluminum chloride, titanium tetrachloride, and boron trifluoride diethyl ether complex. These acids may be used alone or in combination of two or more at any ratio.
- a base may be used to assist the reaction.
- the base used may be either an inorganic base or an organic base.
- the inorganic base alkali metal hydroxides, alkaline earth metal hydroxides, alkali metal carbonates, ammonia and the like can be used.
- the organic base trialkylamine, pyridines and the like can be used.
- Examples include pyridine, collidine, 2,6-lutidine, 4-dimethylaminopyridine, and the like. These bases may be used alone or in combination of two or more at any ratio.
- a known dehydrating agent may be used for assisting the reaction.
- Dehydrating agents used include carboxylic acid halides such as acetyl chloride and benzoyl chloride, carboxylic acid anhydrides such as acetic anhydride and trifluoroacetic anhydride, sulfonic acid halides such as toluenesulfonyl chloride, methanesulfonyl chloride, trifluoromethanesulfonyl chloride, and chloride.
- a solvent can be appropriately used, but the solvent to be used is not particularly limited.
- the solvent include alkyl halides such as dichloromethane and chloroform, aromatic hydrocarbons such as benzene, toluene and xylene, hydrocarbons such as hexane, heptane and cyclohexane, diethyl ether, diisopropyl ether, 1,2- Ethers such as dimethoxyethane, tetrahydrofuran and dioxane, esters such as ethyl acetate and butyl acetate, amides such as N, N-dimethylformamide, N, N-dimethylacetamide and N-methylpyrrolidone, N, N′-dimethyl Examples include imidazolidinone, acetonitrile, water and the like. Each of these solvents
- the amount of the solvent used in the reaction is not particularly limited, but it should be 50 times or less with respect to the weight of the 3-hydroxy-4-nitrotetrahydrothiophene represented by the general formula (8) from the economical viewpoint. Is preferred.
- the reaction temperature is not particularly limited, but it is preferably from the melting point to the boiling point of the solvent from the viewpoint of operation efficiency.
- the 3-nitrotetrahydrothiophene represented by the general formula (1a) is converted into the 3-hydroxy-4-nitrotetrahydrohydrocarbon represented by the general formula (8). It can be obtained by reacting thiophenes with a known esterifying agent or halogenating agent.
- a base may be used for assisting the reaction.
- the base used may be either an inorganic base or an organic base.
- the inorganic base alkali metal hydroxides, alkaline earth metal hydroxides, alkali metal carbonates, ammonia and the like can be used.
- the organic base trialkylamine, pyridines and the like can be used.
- bases may be used alone or in combination of two or more at an arbitrary ratio.
- esterifying agent or halogenating agent used in the method for producing 3-nitrotetrahydrothiophene represented by the general formula (1a) of the present invention include carboxylic acid halides such as acetyl chloride and benzoyl chloride, acetic anhydride, trihydric anhydride.
- Carboxylic anhydrides such as fluoroacetic acid, sulfonic acid halides such as toluenesulfonyl chloride, methanesulfonyl chloride, trifluoromethanesulfonyl chloride, thionyl chloride, sulfuryl chloride, oxalic chloride, phosgene, diphosgene, triphosgene, phosphorus pentachloride, trichloride Examples thereof include phosphorus, phosphorus oxychloride, and phosphorus tribromide. These esterifying agents or halogenating agents may be used alone or in combination of two or more at any ratio.
- a solvent can be appropriately used, but the solvent to be used is not particularly limited.
- the solvent include alkyl halides such as dichloromethane and chloroform, aromatic hydrocarbons such as benzene, toluene and xylene, hydrocarbons such as hexane, heptane and cyclohexane, diethyl ether, diisopropyl ether, 1,2- Ethers such as dimethoxyethane, tetrahydrofuran and dioxane, esters such as ethyl acetate and butyl acetate, amides such as N, N-dimethylformamide, N, N-dimethylacetamide and N-methylpyrrolidone, N, N′-dimethyl Examples include imidazolidinone, acetonitrile, water and the like. Each of these solvents may
- the amount of the solvent used in the reaction is not particularly limited, but it should be 50 times or less with respect to the weight of the 3-hydroxy-4-nitrotetrahydrothiophene represented by the general formula (8) from the economical viewpoint. Is preferred.
- the reaction temperature is not particularly limited, but it is preferably from the melting point to the boiling point of the solvent from the viewpoint of operation efficiency.
- the 2-alkyl-3-nitrothiophene derivative represented by the general formula (3) is converted to the 3-nitro-2,5 represented by the general formula (5).
- - Obtained by oxidizing dihydrothiophenes or 3-nitrotetrahydrothiophenes represented by the general formula (1a) using an oxidizing agent.
- the oxidizing agent used includes manganese compounds, chromic acids, lead tetrachloride, osmium tetrachloride, tetrachloride. Ruthenium, chlorine, bromine, iodine, hypochlorous acid or its salt, chloric acid or its salt, bromic acid or its salt, oxygen, ozone, hydrogen peroxide, organic peroxide, organic peracid, sulfuryl chloride, thionyl chloride Oxalic chloride, phosgene, diphosgene, triphosgene and the like, and chlorine and sulfuryl chloride are preferably used.
- a base may be used for assisting the reaction.
- the base used may be either an inorganic base or an organic base.
- the inorganic base alkali metal hydroxides, alkaline earth metal hydroxides, alkali metal carbonates, ammonia and the like can be used.
- the organic base trialkylamine, pyridines and the like can be used.
- Examples include pyridine, collidine, 2,6-lutidine, 4-dimethylaminopyridine, and the like. These bases may be used alone or in combination of two or more at any ratio.
- a solvent can be appropriately used, but the solvent to be used is not particularly limited.
- the solvent include alkyl halides such as dichloromethane and chloroform, aromatic hydrocarbons such as benzene, toluene and xylene, hydrocarbons such as hexane, heptane and cyclohexane, diethyl ether, diisopropyl ether, 1,2- Ethers such as dimethoxyethane, tetrahydrofuran and dioxane, esters such as ethyl acetate and butyl acetate, amides such as N, N-dimethylformamide, N, N-dimethylacetamide and N-methylpyrrolidone, N, N′-dimethyl Examples include imidazolidinone, acetonitrile, water and the like. Each of these solvents may be used alone, but two solvents such as benzene, toluene and xylene, hydrocarbons
- the amount of the solvent used for the reaction is not particularly limited, but 3-nitro-2,5-dihydrothiophenes represented by the general formula (5) or 3 represented by the general formula (1a) from the economical viewpoint.
- -It is preferably 50 times or less the weight of nitrotetrahydrothiophenes.
- the reaction temperature is not particularly limited, but it is preferably from the melting point to the boiling point of the solvent from the viewpoint of operation efficiency.
- the 2-alkyl-3-aminothiophene derivative represented by the general formula (4) is converted into the 2-alkyl-3-nitro represented by the general formula (3). It can be obtained by reducing a thiophene derivative.
- Examples of the reduction method used in the method for producing a 2-alkyl-3-aminothiophene derivative of the present invention include a catalytic hydrogenation method, a reduction method using an alkali metal in liquid ammonia, and a metal such as iron, zinc, aluminum and tin.
- Reduction method using metal salt such as tin (II) chloride, reduction method using metal hydride complex such as sodium borohydride, lithium aluminum hydride, etc.
- a reduction method and a reduction method with tin (II) chloride are preferably used.
- a solvent can be appropriately used, but the solvent to be used is not particularly limited.
- the solvent include alkyl halides such as dichloromethane and chloroform, aromatic hydrocarbons such as benzene, toluene and xylene, hydrocarbons such as hexane, heptane and cyclohexane, diethyl ether, diisopropyl ether, 1,2- Ethers such as dimethoxyethane, tetrahydrofuran and dioxane, esters such as ethyl acetate and butyl acetate, amides such as N, N-dimethylformamide, N, N-dimethylacetamide and N-methylpyrrolidone, N, N′-dimethyl Examples include imidazolidinone, acetonitrile, water and the like. Each of these solvents may be used alone,
- the amount of the solvent used in the reaction is not particularly limited, but may be 50 times or less with respect to the weight of the 2-alkyl-3-nitrothiophene derivative represented by the general formula (3) from an economic viewpoint. preferable.
- the reaction temperature is not particularly limited, but it is preferably from the melting point to the boiling point of the solvent from the viewpoint of operation efficiency.
- the 2-alkyl-3-aminothiophene obtained by the method for producing 2-alkyl-3-aminothiophene of the present invention includes an agricultural and horticultural fungicide production intermediate, an agricultural and horticultural insecticide production intermediate, and an agricultural and horticultural herbicide. It can be used as a production intermediate or a pharmaceutical production intermediate. For example, it is useful as an intermediate for agricultural and horticultural fungicides described in JP-A-09-235282.
- the present invention it has become possible to efficiently provide a 2-alkyl-3-aminothiophene derivative, which is an effective production intermediate in the medical and agrochemical field. Furthermore, since the present invention can be advantageously produced industrially, the industrial utility value is high.
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Abstract
Description
また2-アルキル-3-ニトロチオフェンの製造方法として、3-ニトロチオフェンとグリニャール試薬を反応させた後、酸化することによる製造方法が開示されている(例えば、TETRAHEDORN 第44巻 第20号 (1988年)6435頁参照)。
さらに3-ニトロチオフェンの製造方法として、チオフェンをニトロ化する製造方法が開示されている(例えば、JUSTUS LIEBIGS ANNALEN DER CHEMIE 第501巻 (1933年) 174頁参照)。
一方、ニトロ基は接触水素添加反応に代表される還元反応により、アミノ基に変換できることが公知であることから、2-アルキル-3-ニトロチオフェン誘導体を還元することにより、3-アミノ-2-アルキルチオフェン誘導体が製造できることが予想される。しかしながら、2-アルキル-3-ニトロチオフェン誘導体が製造困難であることから、これまで2-アルキル-3-ニトロチオフェン誘導体を還元することによる、2-アルキル-3-アミノチオフェン誘導体の製造方法は報告されていない。
前記一般式(3)で表される化合物を還元する工程(B)と、を含む下記一般式(4)
<2> 前記Rが、下記一般式(6)
<3> 前記Rが、1,3-ジメチルブチル基である前記<1>または<2>に記載の製造方法。
<4> 前記工程(A)が、下記一般式(8)
<5> 前記工程(A)が、前記一般式(1)で表される化合物から、下記一般式(5)
<6> 下記一般式(7)
<7> 下記一般式(9)
<8> 下記一般式(10)
<9> 下記一般式(11)
<10> 下記一般式(9)
<11> 下記一般式(10)
<12> 下記一般式(9)
<13> 前記一般式(9)におけるRが、下記一般式(6)
<14> 一般式(9)におけるRが、1,3-ジメチルブチル基である前記<12>に記載のヒドロキシニトロアルカン誘導体。
<15> 下記一般式(7)
<16> 前記一般式(7)におけるRが、下記一般式(6)
<17> 前記一般式(7)におけるRが、1,3-ジメチルブチル基である前記<15>に記載のニトロアルカン誘導体。
<18> 下記一般式(11)
<19> 前記一般式(11)におけるRが、下記一般式(6)
<20> 前記一般式(11)におけるRが、1,3-ジメチルブチル基である前記<18>に記載のニトロオレフィン誘導体。
<21> 下記一般式(8)
<22> 前記一般式(8)におけるRが、下記一般式(6)
<23> 前記一般式(8)におけるRが、1,3-ジメチルブチル基である前記<21>に記載の3-ヒドロキシ-4-ニトロテトラヒドロチオフェン誘導体。
<24> 下記一般式(1)
<25> 一般式(1)におけるRが、下記一般式(6)
[一般式(6)中、R1は水素原子、または、炭素数1から6の直鎖もしくは分岐のアルキル基を表す。#は結合位置を表す。]で表される置換基である<24>に記載の3-ニトロテトラヒドロチオフェン誘導体。
<26> 一般式(1)におけるRが、1,3-ジメチルブチル基である前記<24>に記載の3-ニトロテトラヒドロチオフェン誘導体。
<27> 下記一般式(5)
<28> 一般式(5)におけるRが、下記一般式(6)
<29> 一般式(5)におけるRが、1,3-ジメチルブチル基である前記<27>に記載の3-ニトロ-2,5-ジヒドロチオフェン誘導体。
<30> 下記一般式(3)
<31> 一般式(3)におけるRが、下記一般式(6)
<32> 一般式(3)におけるRが、1,3-ジメチルブチル基である前記<30>に記載の2-アルキル-3-ニトロチオフェン誘導体。
<33> 前記<12>から<32>のいずれか1項に記載の化合物の、医農薬製造中間体としての利用。
<34> 前記医農薬製造中間体が下記一般式(12)
<35> 前記一般式(12)におけるRが、下記一般式(6)
<36> 一般式(12)におけるRが1,3-ジメチルブチル基、Yがフッ素原子、Zが水素原子である前記<34>に記載の医農薬製造中間体としての利用。
Aは炭素原子または硫黄原子を表し、Aが炭素原子の場合nは1を表し、Aが硫黄原子の場合nは1または2を表す。Qは炭素数1から10のアルキル基、炭素数3から10のシクロアルキル基、炭素数1から10のハロアルキル基、炭素数1から10のヒドロカルビルオキシ基、または、炭素数1から6のアルキル基で置換されてもよいアリール基を表す。#は結合位置を表す。
本発明において、一般式(10)で表されるアルデヒド類、一般式(9)で表されるヒドロキシニトロアルカン類、一般式(11)で表されるニトロオレフィン類、一般式(7)で表されるニトロアルカン類、一般式(8)で表される3-ヒドロキシ-4-ニトロテトラヒドロチオフェン類、一般式(5)で表される3-ニトロ-2,5-ジヒドロチオフェン類、一般式(1)で表される3-ニトロテトラヒドロチオフェン類、一般式(3)で表される2-アルキル-3-ニトロチオフェン誘導体、および一般式(4)で表される3-アミノアルキルチオフェン誘導体において、Rで表される炭素数1から10のアルキル基もしくは炭素数3から10のシクロアルキル基で置換されてもよい炭素数1から18のアルキル基、炭素数1から10のアルキル基もしくは炭素数3から10のシクロアルキル基で置換されてもよい炭素数3から10のシクロアルキル基、または、炭素数1から10のアルキル基もしくは炭素数3から10のシクロアルキル基で置換されてもよい炭素数4から12のビシクロアルキル基としては、例えば、メチル基、エチル基、プロピル基、ブチル基、ペンチル基、ヘキシル基、イソプロピル基、イソブチル基、第二ブチル基、第三ブチル基、1-メチルブチル基、2-メチルブチル基、3-メチルブチル基、1,1-ジメチルプロピル基、2,2-ジメチルプロピル基、1,2-ジメチルプロピル基、1-メチルペンチル基、2-メチルペンチル基、3-メチルペンチル基、4-メチルペンチル基、1,1-ジメチルブチル基、1,2-ジメチルブチル基、1,3-ジメチルブチル基、2,2-ジメチルブチル基、2,3-ジメチルブチル基、3,3-ジメチルブチル基、シクロプロピルメチル基、シクロペンチルメチル基、シクロヘキシルエチル基、シクロプロピル基、シクロブチル基、シクロペンチル基、シクロヘキシル基、メチルシクロヘキシル基、シクロヘキシルシクロヘキシル基、ヘキサヒドロインダン-1-イル基、ヘキサヒドロインダン-2-イル基、ヘキサヒドロインダン-4-イル基、ヘキサヒドロインダン-5-イル基、デカヒドロナフタレン-1-イル基、デカヒドロナフタレン-2-イル基などを挙げることができる。
また、一般式(11)で表されるニトロオレフィン類は、シス体、トランス体のいずれか一方の化合物、または両者の任意の割合の混合物でよく、その構造は限定されない。
一般式(10)で示されるアルデヒド類に対して用いるニトロメタンおよび塩基の当量には特に制限を設けないが、経済的観点から3当量以下とすることが望ましい。
用いる塩基は無機の塩基、有機の塩基のいずれでもよい。無機の塩基としては、アルカリ金属の水酸化物、アルカリ土類金属の水酸化物、アルカリ金属の炭酸塩、アンモニア類等を用いることができる。有機の塩基としては、トリアルキルアミン、ピリジン類等を用いることができる。塩基として具体的には、水酸化リチウム、水酸化ナトリウム、水酸化カリウム、水酸化カルシウム、水酸化バリウム、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、液体アンモニア、アンモニア水溶液、トリエチルアミン、トリブチルアミン、ピリジン、コリジン、2,6-ルチジン、4-ジメチルアミノピリジンなどを挙げることができる。これらの塩基はそれぞれ単独で用いてもよいが、2種類以上を任意の割合で組み合わせて使用することもできる。
また反応温度については特に制限を設けないが、操作効率の観点から溶媒の融点以上沸点以下とすることが好ましい。
本発明のニトロオレフィン類の製造方法においては、反応補助のため酸を用いてもよい。用いる酸は無機の酸、有機の酸のいずれでもよく、またブレンステッド酸、ルイス酸のいずれでもよい。
具体的には例えば、硫酸、発煙硫酸、クロロ硫酸、硝酸、発煙硝酸、塩酸、リン酸、臭化水素、酢酸、トリフルオロ酢酸、シュウ酸、酒石酸、フマル酸、マレイン酸、安息香酸、メタンスルホン酸、ベンゼンスルホン酸、トシル酸、トリフルオロメタンスルホン酸、塩化アルミ、四塩化チタン、三フッ化ホウ素ジエチルエーテル錯体などを挙げることができる。これらの酸は、それぞれ単独で用いてもよいが、2種類以上を任意の割合で組み合わせて使用することもできる。
反応に用いる溶媒の量については特に制限を設けないが、経済的観点から一般式(9)で表されるヒドロキシニトロアルカン類の重量に対して50倍量以下とすることが好ましい。
反応温度については特に制限を設けないが、操作効率の観点から溶媒の融点以上沸点以下とすることが好ましい。
反応温度については特に制限を設けないが、操作効率の観点から溶媒の融点以上沸点以下とすることが好ましい。
反応温度については特に制限を設けないが、操作効率の観点から溶媒の融点以上沸点以下とすることが好ましい。
反応温度については特に制限を設けないが、操作効率の観点から溶媒の融点以上沸点以下とすることが好ましい。
反応温度については特に制限を設けないが、操作効率の観点から溶媒の融点以上沸点以下とすることが好ましい。
反応温度については特に制限を設けないが、操作効率の観点から溶媒の融点以上沸点以下とすることが好ましい。
反応温度については特に制限を設けないが、操作効率の観点から溶媒の融点以上沸点以下とすることが好ましい。
本明細書に記載された全ての文献、特許出願、および技術規格は、個々の文献、特許出願、および技術規格が参照により取り込まれることが具体的かつ個々に記された場合と同程度に、本明細書に参照により取り込まれる。
1H-NMR(CDCl3):δ=0.85-0.95(9H,m),1.12-1.28(2H,m),1.64-1.67(2H,m),2.23(3H,s),4.22-4.24(2H,m), 4.45(1H, m)
Claims (36)
- 下記一般式(1)
[一般式(1)中、Rは炭素数1から10のアルキル基もしくは炭素数3から10のシクロアルキル基で置換されてもよい炭素数1から18のアルキル基、炭素数1から10のアルキル基もしくは炭素数3から10のシクロアルキル基で置換されてもよい炭素数3から10のシクロアルキル基、または、炭素数1から10のアルキル基もしくは炭素数3から10のシクロアルキル基で置換されてもよい炭素数6から12のビシクロアルキル基を表す。Xはヒドロキシ基、ハロゲン原子、または下記一般式(2)
(式中、Aは炭素原子または硫黄原子を表し、Aが炭素原子の場合nは1を表し、Aが硫黄原子の場合nは1または2を表す。Qは炭素数1から10のアルキル基、炭素数3から10のシクロアルキル基、炭素数1から10のハロアルキル基、炭素数1から10のヒドロカルビルオキシ基、または、炭素数1から6のアルキル基で置換されてもよいアリール基を表す。#は結合位置を表す。)で表される置換基を表す。)]で表される化合物を酸化して、下記一般式(3)
[一般式(3)中、Rは前記一般式(1)におけるRと同一である]で表される化合物を得る工程(A)と、
前記一般式(3)で表される化合物を還元する工程(B)と、を含む下記一般式(4)
[一般式(4)中、Rは前記一般式(1)におけるRと同一である]で表される2-アルキル-3-アミノチオフェン誘導体の製造方法。 - 前記Rが、1,3-ジメチルブチル基である請求項1または請求項2に記載の製造方法。
- 一般式(9)におけるRが、1,3-ジメチルブチル基である請求項12に記載のヒドロキシニトロアルカン誘導体。
- 下記一般式(7)
[一般式(7)中、Rは炭素数1から10のアルキル基もしくは炭素数3から10のシクロアルキル基で置換されてもよい炭素数1から18のアルキル基、炭素数1から10のアルキル基もしくは炭素数3から10のシクロアルキル基で置換されてもよい炭素数3から10のシクロアルキル基、または、炭素数1から10のアルキル基もしくは炭素数3から10のシクロアルキル基で置換されてもよい炭素数6から12のビシクロアルキル基を表す。X7は、ハロゲン原子、または、下記一般式(2)
(一般式(2)中、Aは炭素原子または硫黄原子を表し、Aが炭素原子の場合nは1を表し、Aが硫黄原子の場合nは1または2を表す。Qは炭素数1から10のアルキル基、炭素数3から10のシクロアルキル基、炭素数1から10のハロアルキル基、炭素数1から10のヒドロカルビルオキシ基、または、炭素数1から6のアルキル基で置換されてもよいアリール基を表す。#は結合位置を表す。)で表される置換基を表す。]で表されるニトロアルカン誘導体。 - 前記一般式(7)におけるRが、1,3-ジメチルブチル基である請求項15に記載のニトロアルカン誘導体。
- 前記一般式(11)におけるRが、1,3-ジメチルブチル基である請求項18に記載のニトロオレフィン誘導体。
- 前記一般式(8)におけるRが、1,3-ジメチルブチル基である請求項21に記載の3-ヒドロキシ-4-ニトロテトラヒドロチオフェン誘導体。
- 下記一般式(1)
[一般式(1)中、Rは炭素数1から10のアルキル基もしくは炭素数3から10のシクロアルキル基で置換されてもよい炭素数1から18のアルキル基、炭素数1から10のアルキル基もしくは炭素数3から10のシクロアルキル基で置換されてもよい炭素数3から10のシクロアルキル基、または、炭素数1から10のアルキル基もしくは炭素数3から10のシクロアルキル基で置換されてもよい炭素数6から12のビシクロアルキル基を表す。Xは、ヒドロキシ基、ハロゲン原子、または、下記一般式(2)
(一般式(2)中、Aは炭素原子または硫黄原子を表し、Aが炭素原子の場合nは1を表し、Aが硫黄原子の場合nは1または2を表す。Qは炭素数1から10のアルキル基、炭素数3から10のシクロアルキル基、炭素数1から10のハロアルキル基、炭素数1から10のヒドロカルビルオキシ基、または、炭素数1から6のアルキル基で置換されてもよいアリール基を表す。#は結合位置を表す。)で表される置換基を表す。]で表される3-ニトロテトラヒドロチオフェン誘導体。 - 一般式(1)におけるRが、1,3-ジメチルブチル基である請求項24に記載の3-ニトロテトラヒドロチオフェン誘導体。
- 一般式(5)におけるRが、1,3-ジメチルブチル基である請求項27に記載の3-ニトロ-2,5-ジヒドロチオフェン誘導体。
- 一般式(3)におけるRが、1,3-ジメチルブチル基である請求項30に記載の2-アルキル-3-ニトロチオフェン誘導体。
- 請求項12から請求項32のいずれか1項に記載の化合物の、医農薬製造中間体としての利用。
- 一般式(12)におけるRが1,3-ジメチルブチル基、Yがフッ素原子、Zが水素原子である請求項34に記載の医農薬製造中間体としての利用。
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