Process for the manufacture of odorants and intermediates used therein
US5292902A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 24, 1992 |
| Grant date | Mar 8, 1994 |
| Priority date | — |
| Expiry date | Jul 24, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2601/16
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention concerns a process for the manufacture of a mixture of (3a.alpha.,5a.beta.,9a.alpha.,9b.beta.)-dodecahydro-3a,6,6,9a-tetramethyln aphtho-[2,1-b]furan and (3a.alpha.,5a.beta.,9a.alpha.,9b.alpha.)-dodecahydro-3a,6,6,9a-tetramethyl naphtho[2,1-b]furan which utilizes the substituted hexenoic acids, 6-(2',6',6'-trimethyl-cyclohex-1'-en-1'-yl)-4-methyl-hex-2- or -3-enoic acid. The invention also concerns nitriles and a process for manufacture of the hexonic acids from the nitriles, having the formula ##STR1## wherein one of the bonds denotes a single bond and the other denotes a double bond, and, R represents hydrogen or the ester group COOR.sup.1 in which R.sup.1 represents a lower alkyl or aryl group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.