Cycloocten-4-yl and bicyclo[3.3.0]octyl ether, their preparation and odoriferous compositions

The invention relates to cycloocten-4-yl ethers of the general formula I and to bicyclo[3.3.0]octyl ethers of the general formula II in which R represents a saturated or unsaturated, straight-chain, branched or cyclic hydrocarbon radical having 1-12 carbon atoms, which can be substituted by C4- to C10-cycloalkyl groups, C1- to C6-alkoxy groups, phenyl groups, naphthyl groups, phenoxy groups or naphthoxy groups, it being possible for the phenyl, naphthyl, phenoxy or naphthoxy radical to be optionally substituted by C1- to C4-alkoxy groups and/or C1- to C4-alkyl groups, with the exception of R = unsubstituted methyl. These compounds are odoriferous substances with a fruity, floral, herbaceous, spicy, woody note and outstanding adhesive properties.