Process for the preparation of vitamin A
US4906795A · kind A · utility
4Cited by
7References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 29, 1988 |
| Grant date | Mar 6, 1990 |
| Priority date | — |
| Expiry date | Nov 29, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2601/16
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Vitamin A containing practically no 2-cis or 6-cis isomer is prepared by hydrogenation of the aldehyde of vitamin A, optionally in the form of a complex with hydroquinone, in the presence of a ruthenium hydride catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.