Process for preparation of 3 piperazinylbenzisothiazoles
US5861511A · kind A · utility
1Cited by
4References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 26, 1997 |
| Grant date | Jan 19, 1999 |
| Priority date | — |
| Expiry date | Sep 26, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D275/06
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
There is disclosed a process for preparing 3-piperazinylbenzisothiazoles comprising reacting the specified 3-halo-1,2-benzisothiazole or 2-cyanobenzenesulfenyl halide in the presence of an alkylene glycol derivative. The process is industrially effective, easy and economical and can provide useful intermediates for production of pharmaceutical preparations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.