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专利名称：Process for the preparation of
diphenylamine or nucleus-substitutedderivative thereof
发明人：Nagata, Teruyuki,Kusuda, Chiyuki,Wada,
Masaru
申请号：EP93117523.6申请日：19931028公开号：EP0595332A1公开日：19940504
摘要：Described are processes for the preparation of diphenylamine or a nucleus-substituted derivative thereof, which comprise, upon feeding into a reaction system aphenol compound and reacting in the reaction system a cyclohexanone compound withan aniline compound in the presence of a hydrogen transfer catalyst and a catalyticamount of the cyclohexanone compound corresponding to the phenol compound whileusing the phenol compound as a hydrogen acceptor and forming the cyclohexanonecompound in the reaction system, (1) conducting reaction while adding dropwise theaniline compound and (2) employing a hydroxide, carbonate or bicarbonate of an alkalimetal and/or alkaline earth metal when the hydrogen transfer catalyst is one of noblemetals of Group VIII of the periodic table, respectively.
申请人：MITSUI TOATSU CHEMICALS, Inc.
地址：2-5 Kasumigaseki 3-chome Chiyoda-Ku Tokyo 100 JP
国籍：JP
代理机构：Zumstein, Fritz, Dr.
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