Process for the preparation of cyclopentane derivatives and intermediates therefor

摘要

The invention provides a process for the preparation of cyclopentanediol derivatives of the general formula in which n represents an integer from 0 to 5; each R represents a halogen atom, nitro, cyano, hydroxyl, alkyl, haloalkyl, alkoxy, haloalkoxy, amino, alkylamino, dialkylamino, alkoxycarbonyl, carboxyl, alkanoyl, alkylthio, alkylsulphinyl, alkylsulphonyl, carbamoyl, alkylamido, cycloalkyl or phenyl group; and R<1>, R<2> and R<3> independently represent a hydrogen atom or an alkyl group; which comprises reacting a cyclopentanol derivative of the general formula with a reducing agent. The invention also provides the cyclopentanol derivative intermediates of formula II per se and a process for their preparation. Compounds of formulae I and II are useful as intermediates in the preparation of certain fungicidally active cyclopentane derivatives.