PROCESS FOR THE PRODUCTION OF ALKALI METAL SALTS OF 2-PYRROLIDON-5-CARBOXYLIC ACID

摘要

Alkali metal salts of 2-pyrrolidon-5-carboxylic acid (pyroglutamic acid) are produced by heating the corresponding alkali metal salt of the glutamic acid to a temperature in the range from its melting point to 250.degree.C until the reaction water of the intramolecular condensation (cyclocondensation) has been completely driven off.