Perfume compositions, perfumed materials and perfumed articles containing one or more isomers of substituted 1.4.4.8-tetramethyl-tricyclo[6.3.0.0.sup.2.5 ]undecanes as perfume base. Use of one or more isomers of 9-alkanoyl-1.4.4.8-tetramethyl-tricyclo[6.3.0.0.sup.2.5 ]undecanes having formula ##STR1## wherein R is methyl, ethyl or n-propyl as a perfume component in perfume compositions and in imparting fragrance to materials and articles for example soaps, cleaning preparations and cosmetic prep...

Flavoring and perfume compositions as well as flavored foodstuffs and allied products and also perfumed products characterized by a content of one or more substituted thiophenes with the formula ##STR1## wherein none, one or two of the dotted lines represent a double bond with the proviso that no cumulated double bonds are present.

Perfume compositions and perfumed products characterized by a content of one or more fragrances having a long-lasting flowery and somewhat spicy odor with a not very pronounced sulphurous note and corresponding to the formula ##STR1## wherein R represents a methyl or ethyl group.

Perfume compositions and perfumed products containing as perfume component one or more 4,7-alkadienals with the formula ##STR1## wherein R represents a straight-chain or branched-chain alkyl or alkenyl group containing 2-5 carbon atoms and wherein the 4-5 double bond has the cis-configuration and the 7-8 double bond can have the cis or trans configuration.

Perfume compositions and perfumed products characterized by a content of one or more fragrances which have the characteristic odor of vanilla and correspond to the formula ##STR1## wherein R.sub.1 or R.sub.2 represents a hydrogen atom and the other symbol an ethyl or propyl group and R.sub.3 represents a methyl or ethyl group.

Perfume compositions and perfumed products characterized by a content of one or more fragrances which have a very natural leather odor and correspond to the formula ##STR1## wherein one of the two symbols R.sub.1 and R.sub.2 represents a methyl group and the other a hydrogen atom or both symbols represent a hydrogen atom and R.sub.3 represents a n-propyl, allyl, 1-propenyl-, sec.butyl, 1-buten-3-yl, isobutyl or 2-methylpropen-3-yl group.

Described is a process for preparing a detergent comprising the step of intimately admixing with a solid or liquid detergent base a maltyl-2-methyl alkenoate having the structure: ##STR1## wherein R is a moiety selected from the group consisting of: ##STR2##

The use of unsaturated bicyclooctenemethanols to augment or enhance the organoleptic properties of perfumes, particularly the aroma of perfumes together with compositions containing such bicyclooctenemethanols and processes for preparing them, said bicyclooctenemethanols having the generic structures: ##STR1## wherein the wavy line represents exo or endo configurations of the ethanol moiety.

Described are maltyl-2-methyl alkenoates having the structure: ##STR1## wherein R is an alkenyl moiety having one of the structures: ##STR2## AS WELL AS THE USES THEREOF IN PERFUMERY, THAT IS, PERFUME COMPOSITIONS AND PERFUMED ARTICLES AS WELL AS COLOGNES OF SAID COMPOUNDS.

Described are methods for augmenting or enhancing the aroma of perfumes and perfumed articles by adding thereto perfume aroma augmenting or enhancing quantities of C.sub.10 -branched olefin mixtures produced by dimerizing isoamylene, (2-methyl-2-butene) as well as perfume compositions, colognes and perfumed articles including solid or liquid anionic, cationic, nonionic or zwitterionic detergents, fabric softener compositions, hair preparations and deodorant compositions as well as bleaching comp...