Process for the hydrogenation of citral to citronellal and of citronellal to citronellol using chromium-promoted Raney nickel catalyst
US4029709A · kind A · utility
6Cited by
5References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 17, 1976 |
| Grant date | Jun 14, 1977 |
| Priority date | — |
| Expiry date | Feb 17, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C45/62
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process is provided for the semihydrogenation of the olefinic group in the conjugated position to the carbonyl group in citral and homologues thereof to form citronellal and homologues thereof, and also for the hydrogenation of the aldehyde group of citronellal to form citronellol and homologues thereof. The dienic aldehyde is hydrogenated with hydrogen in the presence of chromium-promoted Raney nickel catalyst, and optionally, an inert solvent such as a lower aliphatic alcohol. The process is of particular application to the hydrogenation of citral and citronellal to citronellol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.