Novel branched chain ketones and the process for preparing same

Details Novel branched chain ketones and the process for preparing same Novel branched chain ketones and the process for preparing same

1981-08-27

1983-02-15

Niebling, John F.

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

Organic compounds

Oxygen containing

568417, 25217411, 252522R, A61K 746, C07C 252

Patent

active

043742769

ABSTRACT:
Described are acylated derivatives of triisobutylene defined according to the generic structures: ##STR1## wherein, in each of the molecules one of the dashed lines represents a carbon-carbon double bond and each of the other of the dashed lines represents a carbon-carbon single bond; and wherein, in each of the molecules R.sub.3 represents methyl or ethyl; uses thereof in augmenting or enhancing the aroma of perfume compositions, colognes and perfumed articles (e.g., solid or liquid anionic, cationic, nonionic, zwitterionic detergents, cosmetic powders, hair sprays and the-like) as well as processes for preparing same by first trimerizing isobutylene to form one or more compounds defined according to at least one of the structures: ##STR2## wherein in each of the molecules one of the dashed lines represents a carbon-carbon double bond and each of the other dashed lines represent carbon-carbon single bonds; and then reacting one or more of these trimerized isobutylene derivatives with an acyl anhydride having the structure: ##STR3## wherein, R.sub.1 and R.sub.2 are the same or different and each represents methyl or ethyl in the presence of a Lewis acid catalyst such as boron trifluoride etherate or stannic chloride thereby forming the acylated branched chain ketones of our invention defined according to at least one of the structures: ##STR4##

REFERENCES:
patent: 2315046 (1943-03-01), Byrns
patent: 2463742 (1945-11-01), Byrns
patent: 4321255 (1982-03-01), Boden

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