KR900004672A - Process for preparing cyclopentene, cyclopentane and cyclohexane derivatives - Google Patents

Abstract

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Description

Method for preparing cyclopentene, cyclopentane and cyclohexane derivatives

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Claims (7)

A method for producing a compound of the following general formula (I), consisting of heating a compound of the following general formula (IV) and a compound of the following general formula (II) or the following general formula (III) in the presence of a polar solvent. Wherein n represents an integer of 0-5, each R represents a halogen atom, nitro, cyano, hydroxyl, alkyl, haloalkyl, alkoxy, haloalkoxy, amino, alkylamino, dialkylamino, alkoxycarbonyl , Carboxyl, alkanoyl, alkylthio, alkylsulfinyl, alkyl sulfonyl, carbamoyl, alkylamido, cycloalkyl or phenyl group, R ¹ and R ² independently represent a hydrogen atom or an alkyl group, R ⁵ Represents a hydrogen atom or an alkyl or cycloalkyl group, provided that when n is 0 and both R ¹ and R ² represent a hydrogen atom, R ⁵ does not represent a canine atom or a methyl group; X and Y independently represent a halogen atom; M represents an alkali metal atom. The process of claim 1 wherein the polar solvent is a compound of formula (V) R ⁵ OH Where R ⁵ is as defined in claim 1 A process for producing a compound of formula (II), consisting of reacting a compound of formula (VI) with a compound of formula (III), in the presence of a solvent of formula (V). Wherein n represents an integer of 0-5, each R represents a halogen atom, nitro, cyano, hydroxyl, alkyl, haloalkyl, alkoxy, haloalkoxy, amino, alkylamino, dialkylamino, alkoxycarbonyl , Carboxyl, alkanoyl, alkylthio, alkylsulfinyl, alkyl sulfonyl, carbamoyl, alkylamido, cycloalkyl or phenyl group, R ¹ and R ² independently represent a hydrogen atom or an alkyl group, R ⁵ Represents a hydrogen atom or an alkyl or cycloalkyl group, provided that both R ¹ and R ² represent a hydrogen atom, and when R ⁵ represents a methyl group, provided that when n is not 0 and n is 1, R does not represent a methoxy group ; X, Y and M are as defined in claim 1. The method according to claim 2 or 3, wherein R ⁵ has the same meaning in general formula (IV) and general formula (V). A method for producing a compound of the following general formula (III), consisting of reacting compound XY (where X and Y are as defined in claim 1) with a compound of general formula (II). Wherein n represents an integer of 0-5, each R represents a halogen atom, nitro, cyano, hydroxyl, alkyl, haloalkyl, alkoxy, haloalkoxy, amino, alkylamino, dialkylamino, alkoxycarbonyl , Carboxyl, alkanoyl, alkylthio, alkylsulfinyl, alkylsulfonyl, carbamoyl, alkylamido, cycloalkyl or phenyl group, R ¹ and R ² independently represent a hydrogen atom or an alkyl group, X and Y is as defined in claim 1. A compound of formula (II) as defined in claim 3. A compound of formula (III) as defined in claim 5. ※ Note: The disclosure is based on the initial application.