Abstract: Described are 2,4,4-trisubstituted tetrahydro pyranyl esters defined according to the structure: ##STR1## wherein R.sub.1 represents methyl or ethyl and R.sub.2 represents C.sub.2 -C.sub.4 straight chain or branched chain alkyl or alkenyl and organoleptic used thereof in augmenting or enhancing the aroma of perfume compositions, colognes and perfumed articles including, but not limited to bleach compositions, solid or liquid anionic, cationic, nonionic or zwitterionic detergents, perfumed polymers, fabric softener compositions, fabric softener articles, cosmetic powders and hair preparations.

Abstract: Described are isopropyl tetramethylindan musks defined according to the generic structure: ##STR1## wherein R.sub.3 and R.sub.4 are each acetyl or methyl with the provisos:(a) one of R.sub.3 or R.sub.4 is methyl;(b) when R.sub.4 is methyl, then R.sub.3 is acetyl and(c) when R.sub.4 is acetyl, R.sub.3 is methyland organoleptic uses thereof in augmenting or enhancing the aroma of perfume compositions, colognes and perfumed articles.

Abstract: Described are isopropyl tetramethylindan musks defined according to the generic structure: ##STR1## wherein R.sub.3 and R.sub.4 are each acetyl or methyl with the provisos:(a) one of R.sub.3 or R.sub.4 is methyl;(b) when R.sub.4 is methyl, then R.sub.3 is acetyl and(c) when R.sub.4 is acetyl, R.sub.3 is methyland organoleptic uses thereof in augmenting or enhancing the aroma of perfume compositions, colognes and perfumed articles. Also described is a process for preparing same by means of first rearranging a tetralin derivative defined according to the structure: ##STR2## to form at least one compound defined according to the structure: ##STR3## and then reacting the compound having the structure: ##STR4## with a compound of the genus: ##STR5## wherein Z represents acetoxy, chloro or bromo in order to form at least one compound defined according to the structure: ##STR6## wherein one of R.sub.1 or R.sub.2 is methyl and the other of R.sub.1 or R.sub.2 is hydrogen.