SALT OF DITHIOCARBAMIC ACID, PRODUCTION THEREOF, AND PRODUCTION OF ISOTHIOCYANATE FROM SAID SALT
申请人:IHARA CHEMICAL INDUSTRY Co., Ltd.
公开号:EP0523244B1
公开(公告)日:1996-04-10
US5274166A
申请人:——
公开号:US5274166A
公开(公告)日:1993-12-28
Dithiocarbamic acid salt, process for production thereof, and process
申请人:Ihara Chemical Industry Co., Ltd.
公开号:US05274166A1
公开(公告)日:1993-12-28
The present invention provides a dithiocarbamic acid salt which can be converted, at a very high yield, to an isothiocyanate suitable for use as an intermediate for production of thiazabicyclononane derivative or monothiourazole derivative; a process for producing said dithiocarbamic acid salt at a high yield without using thiophosgene having a toxicity problem; and a process for producing an isothiocyanate using said dithiocarbamic acid salt. The dithiocarbamic acid salt of the present invention is represented by general formula (2), and the process for producing said dithiocarbamic acid salt (2) comprises reacting an aniline represented by general formula (5) with carbon disulfide in the presence of 1,4-diazabicyclo[2.2.2]octane (3) or 4-pyrrolidinopyridine (4). The process for producing an isothiocyanate (1) according to the present invention comprises reacting the above dithiocarbamic acid salt (2) with a halogen compound.