Preparation of benzotriazole
US4299965A · kind A · utility
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4References
4Claims
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Key dates
| Filing date | Jun 30, 1980 |
| Grant date | Nov 10, 1981 |
| Priority date | — |
| Expiry date | Jun 30, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D249/18
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Low temperature process for the preparation of benzotriazole at high solids concentrations by the reaction of orthophenylenediamine, sodium nitrite and acetic acid in an aqueous medium at a temperature in the range of from 5.degree. to 25.degree. C., and neutralizing with caustic to liberate benzotriazole in quantitative yield.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.