PROCESS FOR PRODUCING N-FORMYL-L-ASPARACEMIC ACID ANHYDRIDE

摘要

Prepn. of N-formyl-L-aspartic anhydride (I) comprises reacting L-aspartic acid (II) with formic acid in the presence of acetic anhydride. The improvement comprises adding a 3-6C sec. alcohol (III) to the reaction mixt. after formation of (I), in order to consume excess HCOOH and provide a (I)-contg. reaction mixt. which is suitable for further reactions without modificaiton.