N-phenyl-2,2,6,6-tetrahalocyclohexaneimine and processes for preparing 2,2,6,6-tetrahalocyclohexaneimine derivative and 2,6-dihaloaniline derivative
申请人:OSAKA YUKI KAGAKU KOGYO KABUSHIKI KAISHA
公开号:EP0313740A2
公开(公告)日:1989-05-03
A process for preparing a 2,2,6,6-tetrahalocyclohexaneimine derivative (I) which comprises reacting a 2,2,6,6-tetrahalocyclohexanone with a primary amine or ammonia in the presence of a Lewis acid, a process for preparing a 2,6-dihaloaniline derivative (II) which comprises subjecting the 2,2,6,6-tetrahalocyclohexaneimine derivative (I) to dehydrohalogenation in the presence or absence of a catalyst, and an N-phenyl-2,2,6,6-tetrahalocyclohexaneimine. According to the process of the present invention, the 2,2,6,6-tetrahalocyclohexaneimine derivative (I) can be prepared from inexpensive starting materials in high yield through a few steps. Also, the 2,6-dihaloaniline derivative (II) can be prepared from inexpensive starting materials in high yield and high purity through a few steps. Further, the N-phenyl-2,2,6,6-tetrahalocyclohexaneimine is very useful in the preparation of N-phenyl-2,6-dihaloaniline.
一种制备 2,2,6,6-四卤
环己烷亚胺衍
生物 (I) 的工艺,包括在
路易斯酸存在下,使 2,2,6,6-四卤
环己酮与
伯胺或
氨反应;一种制备 2、2,2,6,6-四
氰基
环己烷亚胺衍
生物(I)在催化剂存在或不存在的情况下进行脱氢卤化的工艺,以及N-苯基-2,2,6,6-四
氰基
环己烷亚胺的制备工艺。根据本发明的工艺,2,2,6,6-四卤
环己烷亚胺衍
生物(I)可由廉价的起始原料通过几个步骤高产制备。此外,2,6-二卤
苯胺衍
生物(II)也可以由廉价的起始原料通过几个步骤高产率、高纯度地制备出来。此外,N-苯基-2,2,6,6-四
环己烷亚胺对制备 N-苯基-2,6-二卤
苯胺非常有用。