摘要:
Described are a series of compounds defined according to structure: 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:
wherein R 1 , R 2 , R 3 , R 4 , R 5 . R 6 and R 7 are each inthe alternative hydrogen or methyl; wherein R 8 and R 9 are in the alternative the same or different and are hydrogen orC 1 -C 4 alkyl; with the proviso that one of R 1 , R 2 , R 5 , R 6 or R 7 is methyl and the other of R 1 , R 2 , R 5 , R 6 and R 7 is hydrogen; and with the additional proviso that R 3 and R 4 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.