5-Alkylbicyclo[4.3.0]non-1-en-3-one and 5-alkylbicyclo[4.3.0]non

Details 5-Alkylbicyclo[4.3.0]non-1-en-3-one and 5-alkylbicyclo[4.3.0]non 5-Alkylbicyclo[4.3.0]non-1-en-3-one and 5-alkylbicyclo[4.3.0]non

1978-03-21

1980-06-03

O'Keefe, Veronica

Compositions

Electrically conductive or emissive compositions

Metal compound containing

426534, 434358, 568374, 560122, A61K 746, C11B 900

Patent

active

042060893

ABSTRACT:
Novel bicyclic ketones having the structure: ##STR1## wherein R is a C.sub.1 -C.sub.5 alkyl group, either straight-chain or branched, and saturated analogs have been prepared. These compounds exhibit floral and woody odors and/or desirable flavor properties, and are useful as fragrance and/or flavor materials. The compounds are conveniently prepared from alkylidene cyclopentanones by Michael addition with alkyl metalloacetoacetates and subsequent decarboxylative cyclization of the adducts. The saturated analogs may then be prepared by hydrogenation.

REFERENCES:
patent: 3681464 (1972-08-01), Theimer
patent: 3703479 (1972-11-01), Theimer

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