Diphenylamin, das durch niederes Alkyl und/oder niederes Alkoxy substituiert sein kann, wird durch katalytische Dehydrierung aus dem korrespondierenden N-Cyclohexyliden-anilin erhalten, wobei man einen Rhodium enthaltenden Katalysator einsetzt.
Method for preparing aromatic secondary amino compound
申请人:MITSUI TOATSU CHEMICALS, Inc.
公开号:EP0588060A2
公开(公告)日:1994-03-23
[Constitution] A method for preparing diphenylamine from cyclohexanone and aniline by adding dropwise nitrobenzene and cyclohexanone to a reaction system in which a hydrogen transfer catalyst and a sulfur-free polar solvent are present and aniline is being formed from nitrobenzene as a hydrogen acceptor.
[Effect] Diphenylamine can be obtained in a high yield under moderate reaction conditions.