Process for the preparation of cyclopropane-1, 1-dicarboxylic acid derivatives

摘要

A cyclopropane-1,1-dicarboxylic acid compound is prepared by reacting a malonic acid compound and a 1,2-dihalogeno compound with an alcoholate as a condensation agent which is gradually added to a mixture of said malonic acid compound and said 1,2-chloro compound as a solution or suspension is an alcohol.