Process for the preparation of 2,4-pyridine dicarboxylic acid
US5614636A · kind A · utility
6Cited by
1References
17Claims
0Family size
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Key dates
| Filing date | May 27, 1994 |
| Grant date | Mar 25, 1997 |
| Priority date | — |
| Expiry date | May 27, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D241/24
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the preparation of carboxamides of nitrogen-containing aromatic heterocyclic compounds from the corresponding N-heterocyclic compounds by reaction thereof with formamide in the presence of peroxodisulfuric acid or a peroxodisulfate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.