公开(公告)号：DE3046367A1

公开(公告)日：1982-07-08

申请号：DE3046367

申请日：1980-12-09

Applicant: HOECHST AG

Inventor： HEISE HARTMUT DIPL CHEM DR ,  MOERLER DIETER DIPL CHEM DR

IPC: C07C231/00 ,  C07C67/00 ,  C07C231/04 ,  C07C235/80 ,  C07C103/38 ,  C07C102/00

公开(公告)号：DE2612391A1

公开(公告)日：1977-10-06

申请号：DE2612391

申请日：1976-03-24

Applicant: HOECHST AG

Inventor： HEISE HARTMUT DIPL CHEM DR ,  LEIBMANN BERND DIPL CHEM DR ,  MOERLER DIETER DIPL CHEM DR ,  RITTER EBERHARD DIPL CHEM DR ,  SAHM WILFRIED DIPL CHEM DR

IPC: C07D235/26

Abstract: When continuously reacting an aqueous solution of 5-aminobenzimidazolone-(2) or a salt thereof with diketene then 5-acetoacetylamino-benzimidazolone is obtained in a smooth and safe reaction without foaming. The product results in high space-time yield and excellent quality.