Lower alkyl esters of racemic cis- or trans-2,2-disubstituted-3-formylcyclopropane-1-carboxylic acids

摘要

The esters of formula: IMAGE in which R represents a C1-C6 alkyl and X represents a C2-C6 alkyl or else the two X groups, taken with the adjacent carbon atom, represent a C3-C7 cycloalkyl, are useful as starting materials. They make it possible to prepare, especially, corresponding carboxylic acids and then esters of these acids having insecticidal activity.