Cycloheptenols and their derivatives, methods of making thereof, and utilization thereof as fragrances
US5892104A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 14, 1997 |
| Grant date | Apr 6, 1999 |
| Priority date | — |
| Expiry date | Feb 14, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C35/20
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
This invention relates to a compound having the formula I: ##STR1## wherein n is an integer of from 0 to 1; when n is 1, one of dashed lines a and b is a single bond and the other of dashed lines a and b is a double bond, dashed line c is not present, and dashed line d is a single bond; when n is 0, dashed lines a, b, c and d are single bonds or one of dashed lines a and b is a single bond and the other of dashed lines a and b is a double bond, dashed line c is not present, and dashed line d is a double bond; R.sub.1, R.sub.2 and R.sub.3 are, independently, lower branched or straight chain alkyl, alkenyl or alkynyl of C.sub.1 -C.sub.6 ; and R.sub.4 is hydrogen, lower branched or straight chain alkyl, alkenyl or alkynyl of C.sub.1 -C.sub.5, or C(O)R.sub.5, wherein R.sub.5 is hydrogen or lower branched or straight chain alkyl, alkenyl or alkynyl of C.sub.1 -C.sub.4 ; wherein the sum of the carbon atoms in R.sub.1, R.sub.2, R.sub.3 and R.sub.4 is less than or equal to eight carbon atoms. These compounds can be prepared by the cyclization of 1,1,3-trialkyl-1,6-heptadien-3-ols in the presence of an acid. The compounds of formula I are used as fragrance ingredients to confer, enhance, im…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.