PROCESS FOR PREPARING (L)-2-CHLORPROPIONIC ACID AND ITS SALTS

摘要

A process is disclosed for preparing (L)-2-chlorpropionic acid and its alkali, alkaline earth metal or ammonium salts. For that purpose, L-chlorpropionic acid isobutyl ester is hydrolysed at a pH value from 4 to 8 in the presence of a lipase from pseudomonas spec. DSM 8246 and the optically active reaction product is isolated from the reaction mixture or further reacted in situ in a per se known manner either directly or after conversion of the salt into the acid. The optically active products obtained by this process constitute important intermediate products for preparing plant protective agents.