2,2,3-trimethylcyclopentenyl acetone derivatives, organoleptic uses thereof and process for preparing same
US5039659A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 7, 1990 |
| Grant date | Aug 13, 1991 |
| Priority date | — |
| Expiry date | Aug 7, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2601/10
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Described are 2,2,3-trimethylcyclopentenyl acetone derivatives defined according to one or a mixture of compounds having the structures: ##STR1## organoleptic uses thereof, processes for preparing same using as a starting material the compound having the structure: ##STR2## which is reacted to form the compound having the structure: ##STR3## which is further reacted to form the novel intermediate: ##STR4## which is then converted to the 2,2,3-trimethylcyclopentenyl acetone derivatives or our invention using the allylic alcohol having the structure: ##STR5## wherein R.sub.3, R.sub.4, and R.sub.5 are the same or different hydrogen or methyl; R.sub.6 represents hydrogen, methyl, ethyl, or propyl or isopropyl; x is 0, 1 or 2; R.sub.7 is methyl or ethyl; R.sub.7 ' and R.sub.7 " represent methyl or ethyl or R.sub.7 ', (CH.sub.2).sub.x and R.sub.7 " taken together represents C.sub.2 -C.sub.6 alkylene; M represents Li, Mg, X or MgX; and X represents chloro or bromo.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.