Bicyclic ketones

Details Bicyclic ketones Bicyclic ketones

1980-02-25

1981-12-08

Trousof, Natalie

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

C07C 49477, C07C 49623

Patent

active

043049443

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
Chemical Abstracts, vol. 54 (1960) #6792i.
Chemical Abstracts, vol. 51 (1957) #13,832h.

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