Carbonyl norbornanes, organoleptic uses thereof and processes for preparing same.

摘要

Described are a series of compounds defined according to structure: <CHEM> wherein the dashed line represents a carbon-carbon single bond or a carbon-carbon double bond; wherein Z is in the alternative one of the moieties: <CHEM> wherein R1, R2, R3, R4, R5, R6 and R7 are each in the alternative hydrogen or methyl; wherein R8 and R9 are in the alternative the same or differnet and are hydrogen or C1-C4 alkyl; with the proviso that one of R1, R2, R5, R6 or R7 is methyl and the other of R1, R2, R5, R6 and R7 is hydrogen; and with the additional proviso that R3 and R4 are not both methyl and uses thereof for augmenting or enhancing the organoleptic properties of consumable materials including foodstuffs, chewing gums, toothpastes, medicinal products, smoking tobaccos, chewing tobaccos, perfumes, perfumed articles, colognes, smoking tobaccos or smoking tobacco articles, as well as catalytic and thermal processes for preparing such compounds by means of Diels-alder reactions between arcylic compounds and monomethyl substituted cyclopentadienes or mixtures thereof.