申请人:IHARA CHEMICAL INDUSTRY Co., Ltd.
公开号:EP0163948A1
公开(公告)日:1985-12-11
A process for producing an indoline of the formula:
wherein R1 is a hydrogen atom, a lower alkyl group, a lower alkoxy group, a nitro group or a hydroxyl group, R2 is a hydrogen atom, a lower alkoxy group or a nitro group, and R3 is a hydrogen atom, a lower alkyl group or a substituted lower alkyl group, by a cyclization reaction of a 2-halogenophenethylamine of the formula:
wherein R1, R2 and R3 are as defined above, and X is a halogen atom, in the presence of a copper type catalyst and a dehydrohalogenating agent, characterized in that copper bis(8-hydro- xyquinolinolate) is used as the copper type catalyst, and an alkali is used as the dehydrohalogenating agent.
一种在铜催化剂和脱氢卤化剂存在下,通过式 2-卤代苯乙胺的环化反应生产式 2-卤代苯乙胺的吲哚啉的工艺,其中 R1 是氢原子、低级烷基、低级烷氧基、硝基或羟基,R2 是氢原子、低级烷氧基或硝基,R3 是氢原子、低级烷基或取代的低级烷基,其特征在于双(8-氢-羟基喹啉酸铜)用作铜催化剂,碱用作脱氢卤化剂。