Abstract: A method is described for producing a compound having the formula (I) or an admixture comprising a compound having the formula (I), having the following steps: dissolving an indanone having the formula (II) in a solvent or in an admixture which contains a solvent, the solvent being selected from the group of solvents which form an azeotrope with water, converting the indanone having the formula (II) with an aromatic aldehyde having the formula (III) in the presence of at least one organic base, according to the drawing: where R1 and R2 independently of each other signify hydrogen or a branched or unbranched alkyl group having from 1 to 12 carbon atoms and where R3, R4, R5, R6, R7, R8, R9, R10 and R11 independently of each other signify hydrogen, hydroxy or a branched or unbranched alkyl or alkoxy group having from 1 to 12 carbon atoms and removing water formed from the reaction admixture during the conversion.

Abstract: A method is described for producing a compound having the formula (I) or an admixture comprising a compound having the formula (I), having the following steps: dissolving an indanone having the formula (II) in a solvent or in an admixture which contains a solvent, the solvent being selected from the group of solvents which form an azeotrope with water, converting the indanone having the formula (II) with an aromatic aldehyde having the formula (III) in the presence of at least one organic base, according to the drawing: where R1 and R2 independently of each other signify hydrogen or a branched or unbranched alkyl group having from 1 to 12 carbon atoms and where R3, R4, R5, R6, R7, R8, R9, R10 and R11 independently of each other signify hydrogen, hydroxy or a branched or unbranched alkyl or alkoxy group having from 1 to 12 carbon atoms and removing water formed from the reaction admixture during the conversion.

Abstract: The novel substance 5,7,7-trimethyloctanenitrile and certain uses of this substance, in particular as a fragrance, are described.

Abstract: The novel substance 5,7,7-trimethyloctanenitrile and certain uses of this substance, in particular as a fragrance, are described.

Abstract: The 3-(hexenyloxy)-propane-nitriles of general formula A, in which R.sup.1 and R.sup.2 are optionally a hydrogen atom or a methyl group and R.sup.3 is an unbranched hexenyl group, are new and are useful as odour materials such as ingredients for perfume compositions. Their production is carried out through the base catalysed addition of acrylonitrile or methyl substituted acrylonitrile to the unbranched hexenol, in which the reaction temperature is between 0.degree. and 50.degree. C. (for acrylonitrile especially between 0.degree. and 10.degree. C., for crotonitrile especially between 15.degree. and 25.degree. C. and for methacrylonitrile, especially between 30.degree. and 40.degree. C.), and the aforesaid base is benzyl trimethylammonium hydroxide (Triton B).