Process for the preparation of 2-amino-7-nitrobenzo-thiazoles
US5567822A · kind A · utility
1Cited by
4References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 13, 1994 |
| Grant date | Oct 22, 1996 |
| Priority date | — |
| Expiry date | Jun 13, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D277/82
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
This invention relates to the process for the preparation of 2-amino 7-nitro benzothiazoles of formula (I) ##STR1## consisting in a) nitrating a derivative of formula (II) ##STR2## and b) reacting the compound of formula (III) ##STR3## so obtained with caustic ammonia.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.