Preparation of 2-chloropropionic-acid esters.

摘要

Process for the preparation of an optically active 2-chloropropionate ester of formula: <IMAGE> R being an optionally substituted hydrocarbyl residue, from an optically active lactate of formula <IMAGE> the said process being characterised in that the said lactate (I) is brought into contact with phosgene and a compound chosen from aliphatic amides, aliphatic lactams and aliphatic ureas. Use of the process for the manufacture of intermediates which are useful in the agrochemical industry.