Patent ID: 6215023
Filing Date: 2001-04-10
Classification: C07C

Abstract:
A process for the preparation of cyclopropane carboxylic acids of the general formula II ##STR3##wherein the substituent R.sub.1 represents a halogen atom or haloalkyl, and the substituent X.sub.2 represents a halogen atom, where R.sub.1 and X.sub.2 may be the same or different,and wherein the configuration of II is Z for R.sub.1 =CF.sub.3 and X.sub.2 =Cl,characterized by reacting, in the presence of a catalyst, a compound of the general formula I ##STR4##wherein the substituents R.sub.1 and X.sub.2 are as defined above, andthe substituent X.sub.1 represents a halogen atom, where R.sub.1, X.sub.1 and X.sub.2 may be the same or different,with a compound which is a hydrogen donor.