Method for preparing 2-cyanamidobenzimidazoles or 2-cyanamidobenzoxazoles
US4321393A · kind A · utility
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2Claims
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Key dates
| Filing date | Jan 14, 1981 |
| Grant date | Mar 23, 1982 |
| Priority date | — |
| Expiry date | Jan 14, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D235/32
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method of preparing 2-cyanamidobenzimidazoles or 2-cyanamidobenzoxazoles comprising reacting N-cyanodiphenoxyiminocarbonate with an o-amino or o-hydroxy aniline.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.