Process for the production of tetronic acid alkyl esters
US5144047A · kind A · utility
3Cited by
3References
21Claims
0Family size
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Key dates
| Filing date | Jul 19, 1990 |
| Grant date | Sep 1, 1992 |
| Priority date | — |
| Expiry date | Jul 19, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D307/60
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Tetronic acid alkyl esters are produced at a higher temperature by a ring closure of 4-halo-3-alkoxy-2-butene carboxylic acids. The tetronic acid alkyl esters are reacted by in acid hydrolysis in tetronic acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.