申请人:Osaka Yuki Kaguku Kogyo Kabushiki Kaisha
公开号:US05001264A1
公开(公告)日:1991-03-19
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2,2,6,6-四卤代环己烷亚胺衍生物(I)的方法,包括在路易斯酸的存在下将2,2,6,6-四卤代环己酮与一级胺或氨反应,一种制备2,6-二卤苯胺衍生物(II)的方法,包括在催化剂的存在或缺席下将2,2,6,6-四卤代环己烷亚胺衍生物(I)进行脱卤化反应,以及N-苯基-2,2,6,6-四卤代环己烷亚胺。根据本发明的方法,可以通过几个步骤从廉价的起始材料高产率地制备2,2,6,6-四卤代环己烷亚胺衍生物(I)。此外,可以通过几个步骤从廉价的起始材料高产率和高纯度地制备2,6-二卤苯胺衍生物(II)。此外,N-苯基-2,2,6,6-四卤代环己烷亚胺在制备N-苯基-2,6-二卤苯胺方面非常有用。