Substituted cyclopentenyl oxabicyclooctanes, cyclopentenylformylcyclohexenes and cyclopentenylhydroxymethyl cyclohexenes, processes for preparing same and organoleptic uses thereof

Described are cyclopentenyl-oxabicyclooctanes, cyclopentenyl-formylcyclohexenes and cyclopentyl-hydroxymethyl cyclohexenes having the generic structures: and wherein R1, R2, R3', and R3'' each represents hydrogen or methyl with the provisos: (i) one or two of R1, R2, R3' and R3'' represents methyl; (ii) R1 and/or R2 are methyl; (iii) at least one of R3' and R3'' is hydrogen; and (iv) when R1 and R2 is methyl then each of R3' and R3'' is hydrogen wherein R4' is hydrogen or C1-C5 alkyl, processes for preparing same and uses thereof in augmenting or enhancing the aroma of perfume compositions, colognes and perfumed articles, e.g., solid or liquid, anionic, cationic, nonionic or zwitterionic detergents, cosmetic preparations, fabric softener compositions, fabric softener articles, hair preparations and perfumed polymers.