Givaudan Corporation

Peter Schudel

Dietmar Lamparsky

Erhard Bertele

Jost Wild

Trudi Sigg-Grutter

Daniel Helmlinger

Paul A Ochsner

Yvo Crameri

Hans Ulrich Gonzenbach

Rolf Schwarzenbach

Daniel Helminger

A process for treating 2-ethylhexyl p-methoxycinnamic acid ester is described. The process comprises heating, preferably distilling, the ester in the presence of a phenol to insure that the ester is considered Ames negative.

Process for treating 2-ethylhexyl p-methoxycinnamate in the presence of

There is disclosed a novel process for preparing a number of cinnamaldehyde derivatives. These cinnamaldehyde derivatives can be reduced to dihydrocinnamaldehyde derivatives, a number of which are commercially important in the preparation of fragrances. The invention is also directed to a number of novel intermediates and their preparation.

3-Phenyl-propionaldehydes

Process for the preparation of dihydrocinnamaldehyde derivatives

There is provided a hitherto unknown compound, p-Menthane-8-thiol-3-one which is particularly useful as a flavorant or odorant yielding the aroma of cassis. There are also provided methods of making this compound and compositions utilizing the same.

Perfume compositions containing p-menthane-8-thiol-3-one

The preparation and use of the novel 3,7-dimethyl-octa-2,6-dienyl-mercaptan as a new odorant and flavorant is disclosed.

Flavoring with 3,7-dimethyl-octa-2,6-dienyl-mercaptan

A process for preparing compounds of the type of sinensal, which is suitable as a flavor-imparting agent of orange aroma, and novel intermediates including those having the general formula: ##SPC1## Wherein R signifies a CH.sub.2 OH, CHO or COOH group and the broken lines present a double bond emanating from C-atom 4, are disclosed.

Process for preparation of terpene flavorants and novel intermediates

3,7-Dimethyl-octa-2,6 dienyl-mercaptan perfume composition

There are provided novel mercapto- or alkylthio-substituted oxo-terpenoids having 10 carbon atoms in the terpenoid skeleton. These novel compounds may be acyclic monocyclic or bicyclic. The novel compounds are useful as odorants particularly, but also for producing aromas, e.g. of a vegetable note.

P-Meth-8-ene-6-thiol-2-one

A process for preparing compounds of the type of sinensal, which is suitable as a flavor-imparting agent of orange aroma, and novel intermediates including those having the general formula: ##SPC1## Wherein R signifies a CH.sub.2 OH, CHO or COOH group and the broken lines represent a double bond emanating from C-atom 4, are disclosed.

4-Methylene-5-hexen-1-ol

Terpene flavorant intermediates

There are disclosed novel .beta.-mercapto carboxylic acid esters and methods of producing the same. These novel esters are useful as odorants and flavorants.

Growing community of inventors

Grut near Wetzikon, Switzerland

Peter Schudel