| 摘要 |
Described are branched ketones defined according to the generic structure: <IMAGE> wherein R4' represents C1-C4 lower alkyl; wherein one of the dashed lines is a carbon-carbon double bond and the other of the dashed lines represents carbon-carbon single bonds. Also described are organoleptic uses of these branched ketones in augmenting or enhancing the aroma or taste of consumable materials such as perfume compositions, colognes, perfumed articles (e.g., solid or liquid anionic, cationic, nonionic or zwitterionic detergents; cosmetic powders; hair preparations; fabric softener compositions and dryer-added fabric softener articles), foodstuffs, chewing gums, toothpastes, medicinal products, chewing tobaccos, smoking tobaccos and smoking tobacco articles as well as processes for preparing such branched ketones by reacting dimers of isoamylene with acyl halides or acyl anhydrides or mixed acyl anhydrides.
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