Title:
A synthesizing method of 1 and 2- Benz iso thiazoline 3-ON
Document Type and Number:
Japanese Patent JP5955972
Kind Code:
B2
Abstract:
Sodium sulfide hydrate is at least partially dehydrated by heating with N-methyl 2-pyrrolidone. 2-chlorobenzamide is added to the mixture which is heated further. The mixture is cooled and treated with aqueous hydrogen peroxide to give the sodium salt of 1,2-benzoisothiazoline-3-one in good yield. Acidification if desired gives rise to the free 1,2-benzoisothiazoline-3-one.
Inventors:
Berg, Karlsten
Wool Male, Didier
Thing, Sanguita
Wool Male, Didier
Thing, Sanguita
Application Number:
JP2014537606A
Publication Date:
July 20, 2016
Filing Date:
October 25, 2012
Export Citation:
Assignee:
Titan Chemicals Limited
International Classes:
C07D275/04
Domestic Patent References:
| JP2003073366A | ||||
| JP2000007667A | ||||
| JP61161271A | ||||
| JP6345723A |
Other References:
SIEGEMUND ANJA,SULFUR REPORTS,スイス,HARWOOD ACADEMIC PUBLISHERS,2002年 1月 1日,V23 N3,P279-319
MASAO SHIMIZU,HETEROCYCLES,NL,ELSEVIER SCIENCE PUBLISHERS,2003年 1月 1日,V60 N8,P1855-1864
MASAO SHIMIZU,HETEROCYCLES,NL,ELSEVIER SCIENCE PUBLISHERS,2003年 1月 1日,V60 N8,P1855-1864
Attorney, Agent or Firm:
Patent business corporation Kita Aoyama International