Epimerization of 2- or 4-substituted cyclohexanecarboxylic acids

摘要

The present invention relates to a new method for obtaining a purity of about 93 % to 100 % of the trans form of 2- or 4-substituted cyclohexanecarboxylic acid or reactive derivatives thereof from the cis form or a mixture of the cis and trans forms by a single step, particularly, to a method for obtaining a purity of substantially 100 % of the trans form of 4-substituted cyclohexanecarboxylic acid.