Novel esters and their use as perfumery components

摘要

The invention consists of compounds having the general formula in which R1, R2 and R3 are the same different and are hydrogen or methyl, n is one or two, and the symbols R represent independently either a hydrogen atom or with the adjacent symbol R, a single bond and especially the compounds wherein the group is acrylyl, methacrylyl, angelyl, tiglyl, crotonyl or seneciyl, and the group is isopropylcyclohexylmethyl, perillyl, cuminyl or 2 - (4 - iso - propenyl - 1 - cyclohex - 1 - enyl) ethyl. The compounds are made by reaction of the alcohol of the formula with a compound of the formula in which X is a chlorine or bromine atom, hydroxyl or a lower alkoxyl radical and particularly by the reaction of the alcohol with an acid chloride or bromide in an inert solvent medium and in the presence of sufficient of a tertiary organic base to combine with a hydrochloric acid formed in the reaction, or by the reaction of the alcohol with an ester at the boiling point in the presence of a transesterification catalyst, preferably in the presence of a polymerization inhibitor. In the examples the following compounds are prepared: cuminyl acrylate and methacrylate, 4-isopropyl crylohexyl-methyl acrylate methacrylate, crotonate; perillyl acrylate, crotonate, methacrylate, 2-methyl but-2-enoate; homoperillyl acrylate. The stabilizer employed in the preparation is hydroquinone.ALSO:Perfumery compositions comprise one or more of the compounds of the general formula in which R1, R2 and R3 are the same or different and are hydrogen or methyl, n is one or two and R represent independently either hydrogen or with an adjacent R, a single bond, or with other perfumes together with any of the conventional adjuvants e.g. organic or aqueous solvents.