公开(公告)号：IN144221B

公开(公告)日：1978-04-08

申请号：IN736CA1976

申请日：1976-04-27

Applicant: HOECHST AG

Inventor： ZIMMERMANN V ,  HILLE E ,  PASZTHORY E ,  SEIFERT K-G

IPC: C07C235/80 ,  C07C67/00 ,  C07C231/00 ,  C07C231/04 ,  C07C233/16 ,  C07C103/12

Abstract: N-acetoacetyl-2,5-dimethoxy-4-chloroanilide is obtained in high yield and purity by suspending 2,5-dimethoxy-4-chloroaniline in water and adding the complete amount of diketene necessary altogether at the beginning of the reaction. The product is obtained in a purity allowing its use as an azoic coupling component without purification.