Dimeric ketene of 1,2,4-triazole-3-carboxylic acid
US4312987A · kind A · utility
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Key dates
| Filing date | Sep 18, 1980 |
| Grant date | Jan 26, 1982 |
| Priority date | — |
| Expiry date | Sep 18, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D249/10
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Dimeric ketene of 1,2,4-triazole-3-carboxylic acid, of the formula ##STR1## and a process for its preparation by contacting 1,2,4-triazole-3-carboxylic acid with at least an equal molar amount of an acid halide in the presence of the small amount of N,N-disubstituted carboxylic acid amide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.