| 摘要 |
Described are acylated derivatives of triisobutylene defined according to the generic structures: <IMAGE> +TR <IMAGE> 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 R3 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: <IMAGE> +TR <IMAGE> 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: <IMAGE> wherein, R1 and R2 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: <IMAGE> +TR <IMAGE>
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