Preparation of carvone
US6500989B1 · kind B1 · utility
0Cited by
2References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 4, 2001 |
| Grant date | Dec 31, 2002 |
| Priority date | — |
| Expiry date | Dec 4, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C45/85
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the preparation of carvone comprises hydrogenating carvoxime in the presence of a selecively poisoned catalyst. Preferred catalysts include noble metals supported on inorganic materials poisoned with a catalyst modifier. In a preferred embodiment of the process defined herein, the crude carvone reaction product produced in accordance with the process of the invention, is purified by treating the crude carvone product with an organometallic compound M(X)n wherein M is a polyvalent metal, n is the valence of M and X denotes an inorganic or organic atom or group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.