公开(公告)号：HU184826B

公开(公告)日：1984-10-29

申请号：HU227380

申请日：1980-09-15

Applicant: BASF AG

Inventor： RICHARZ WINFRIED ,  FROELICH HELMUT ,  SCHROEDER HARALD

IPC: A01N43/58 ,  A01P13/00 ,  C07D237/22 ,  C07D237/10

Abstract: The manufacture of substantially pure 4-amino-5-chloro-1-phenylpyridaz-6-one by reaction of 4,5-dichloro-1-phenylpyridaz-6-one with ammonia in the presence of phenol-4-sulfonic acid.

公开(公告)号：RO80196A

公开(公告)日：1982-12-06

申请号：RO10215980

申请日：1980-09-15

Applicant: BASF AG

Inventor： RICHARZ WINFRIED ,  FROELICH HELMUT ,  SCHROEDER HARALD

IPC: A01N43/58 ,  A01P13/00 ,  C07D237/22 ,  C07D237/10

Abstract: The manufacture of substantially pure 4-amino-5-chloro-1-phenylpyridaz-6-one by reaction of 4,5-dichloro-1-phenylpyridaz-6-one with ammonia in the presence of phenol-4-sulfonic acid.