Process for the preparation of alpha-pyrones
US4113742A · kind A · utility
1Cited by
7References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 14, 1976 |
| Grant date | Sep 12, 1978 |
| Priority date | — |
| Expiry date | Jun 14, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C59/84
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the preparation of tetrahydro-alpha-pyrones comprises preparing the alkyl ester of a 5-oxo alkanoic acid from a 4-oxo alkane carbonitrile, obtained in a first stage by the action of benzyl cyanide on the corresponding alkenone, and then saponifying the obtained ester, followed by hydrogenation and cyclization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.