Firmenich Sa

Eric Maillefer

Bernard L Muller

Karl H Schulte-Elte

New perfuming ingredient represented by the formula ##STR1## or 2-methoxy-4-propyl-1-cyclohexanol. The compound possesses useful odor properties and can therefore be used advantageously for the preparation of perfuming compositions and perfumed products. The process for its preparation comprises the catalytic hydrogenation of eugenol.

Perfuming ingredient, process for its preparation and utilization of

Compounds of formula ##STR1## having a double bond in one of the positions indicated by the dotted lines and wherein R represents a hydrogen atom or a methyl radical are utilized as starting materials for the preparation of bicyclic unsaturated hydrocarbons of formula ##STR2## (R=H, CH.sub.3). Conversion of (II) to (I) occurs via thermal treatment in the presence of a metal catalyst. Disclosed is also a process for the preparation of (II).

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Echandens, Switzerland

Eric Maillefer