Preparation of benzothiazolylazoanilines
US5597905A · kind A · utility
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Key dates
| Filing date | Dec 15, 1995 |
| Grant date | Jan 28, 1997 |
| Priority date | — |
| Expiry date | Dec 15, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B29/0088
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Described is a process for preparing benzothiazolylazoanilines by diazotization of 2-aminobenzothiazoles in a mixture consisting essentially of phosphoric acid, sulfuric acid and water using customary diazotizing agents and subsequent addition of the reaction mixture to an aqueous acidic solution of the anilines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.