发明授权
- 专利标题： Process for preparation of 3,3'- or 3,4'-diaminobenzophenones
- 专利标题（中）： 制备3,3'-或3,4'-二氨基二苯甲酮的方法
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申请号： US490546申请日： 1983-05-02
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公开(公告)号： US4618714A公开(公告)日： 1986-10-21
- 发明人: Keizaburo Yamaguchi , Kenichi Sugimoto , Yoshimitsu Tanabe , Saburo Kawashima , Akihiro Yamaguchi
- 申请人： Keizaburo Yamaguchi , Kenichi Sugimoto , Yoshimitsu Tanabe , Saburo Kawashima , Akihiro Yamaguchi
- 申请人地址： JPX Tokyo
- 专利权人： Mitsui Toatsu Chemicals, Inc.
- 当前专利权人： Mitsui Toatsu Chemicals, Inc.
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX58-47097 19830323
- 主分类号： C07B61/00
- IPC分类号： C07B61/00 ; B01J23/00 ; B01J23/40 ; B01J23/70 ; B01J25/02 ; B01J27/00 ; B01J27/02 ; B01J27/08 ; C07C20060101 ; C07C67/00 ; C07C201/00 ; C07C205/45 ; C07C221/00 ; C07C225/22 ; C07C97/10
摘要：
Preparation of 3,3'- or 3,4'-diaminobenzophenone by nitrating a chloronitrobenzophenone mixture obtained by the Friedel-Crafts reaction between 3- or 4-nitrobenzoyl chloride and chlorobenzene, and catalytically reducing and dechlorinating the resulting chlorodinitrobenzophenone mixture in the presence of a reduction catalyst and a dehydrochlorinating agent.