Novel bicyclic scents
US4224253A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 28, 1978 |
| Grant date | Sep 23, 1980 |
| Priority date | — |
| Expiry date | Aug 28, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2602/42
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Novel 2-methylene-3-methyl-3-(1',3'-pentadien-1'-yl)-bicyclo-[2,2,1]-heptanes substituted in the 4'-position by methyl, alkoxycarbonyl, formyl, hydroxymethyl or cyano are obtained by reacting the novel aldehyde 2-methylene-3-methyl-3-formyl-bicyclo-[2,2,1]-heptane with 3-methyl-, 3-alkoxycarbonyl- or acetalized 3-formyl-2-butene-1-triarylphosphorylidene under the conditions of a Wittig reaction, with or without hydrolytic cleavage of the acetal group, or hydrolytic cleavage of the acetal group followed by reduction of the formyl group to the hydroxymethyl group, or hydrolytic cleavage of the acetal group, reaction of the aldehyde with a hydroxylammonium salt, and dehydration of the resulting oxime. The novel compounds are distinguished by interesting scent characteristics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.