Cyclohexenylmethyloxabicyclooctanes, processes for preparing same, intermediates used in said processes and organoleptic uses of said cyclohexenylmethyloxabicyclooctanes and intermediates therefor

Described are cyclohexenylmethyloxabicyclooctanes defined according to the generic structures: and as well as intermediates for producing same defined according to the generic structures: and wherein R1, R2, R3', and R3'' are each hydrogen or methyl with the provisos: (i) one or both of R1 and R2 is methyl; (ii) when R1 and R2 are both methyl then R3' and R3'' each represents hydrogen; (iii) one of R3' and R3'' is methyl and the other is hydrogen or R3' and R3'' both represent hydrogen; and (iv) when R3' and R3'' are both methyl then R1 is methyl and R2 is hydrogen; and R4' is hydrogen or C1-C5 alkyl. Also described are the organoleptic uses of said cyclohexenylmethyloxabicyclooctanes wherein implementing or enhancing the aroma of perfume compositions, colognes and perfumed articles.