Process for the manufacture of 6-hydroxypyrid-2-ones
US4284782A · kind A · utility
4Cited by
1References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 17, 1979 |
| Grant date | Aug 18, 1981 |
| Priority date | — |
| Expiry date | Sep 17, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D213/85
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The manufacture of 6-hydroxypyrid-2-ones is achieved by reacting a cyanoacetamide with an acetoacetic acid ester at temperatures of 50.degree. to 200.degree. C. and a pressure of 0.5 to 50 bars in an aqueous solution or suspension in the presence of an amine in a molar amount at least equal to that of the cyanoacetamide reactant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.