Process for the manufacture of cyclohexene derivatives
US4283559A · kind A · utility
10Cited by
4References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 21, 1979 |
| Grant date | Aug 11, 1981 |
| Priority date | — |
| Expiry date | May 21, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12R2001/865
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The compound 6-hydroxy-3-(5-hydroxy-3-methyl-1,3-pentadienyl)-2,4,4-trimethyl-2-cyclohe xen-1-one useful as intermediate for producing the natural coloring agent astaxanthin as well as a method for synthesizing astaxanthin from this compound and synthesizing the compound from 2-hydroxyketo isophorone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.