Dsm IP Assets B.v.

Johannes Tschumi

Werner Bonrath

Raphael Beumer

Michael Gressly

Jonathan Alan Medlock

Thomas Netscher

Andreas Hendrikus Maria De Vries

Gerardus Karel Maria Verzijl

René Tobias Stemmler

Fabrice Aquino

Rolf Kuenzi

Thomas Kircher

Peter Scheer

Reto Zenhaeusern

Rolf Künzi

De Andreas Hendrikus Maria Vries

The present invention relates to the use of a specific organic compound as flavor and fragrance material. Furthermore the invention relates to flavor and fragrance formulations comprising such a specific organic compound.

Flavor and fragrance formulation (V)

The present invention is related to a novel and improved process for the production of dehydrolinalyl acetate (DLA), which IUPAC name is acetic acid 1-ethynyl-1,5-dimethyl-hex-4-enyl ester, starting from dehydrolinalool (DLL), which IUPAC name is 3,7-dimethyloct-6-en-1-yn-3-ol, by acetylation.

Process of production of dehydrolinalyl acetate (II)

The present invention relates to a process of manufacturing (6R,10R)-6,10,14-trimethylpentadecan-2-one in a multistep synthesis from a mixture of (5E,9E)-, (5E,9Z)-, (5Z,9E)- and (5Z.9Z)-isomers of 6,10,14-trimethylpentadeca-5,9,13-trien-2-one or 6,10,14-trimethylpentadeca-5,9-dien-2-one. The process is very advantageous in that it forms in an efficient way the desired chiral product from a mixture of stereoisomers of the starting product.

(6R,10R)-6,10,14-trimetylpentadecan-2-one prepared from 6,10,14 trimetylpentadeca-5,9,13-trien-2-one or 6,10,14-trimetylpentadeca-5,9-dien-2-one

The present invention relates to the use of specific organic compounds as flavor and fragrance material. Furthermore the invention relates to new specific organic compounds, as well as to flavor and fragrance formulations comprising at least one of the specific organic compounds.

Flavor and fragrance formulation (III)

The present invention is related to a novel and improved process for the production of dehydrolinalyl acetate (DLA), which IUPAC name is acetic acid 1-ethynyl-1,5-dimethyl-hex-4-enyl ester, starting from dehydrolinalool (DLL), which IUPAC name is 3,7-dimethyloct-6-en-1-yn-3-ol, by catalytic acetylation.

Process of production of dehydrolinalyl acetate (I)

The present invention relates to the use of specific organic compounds as flavor and fragrance material. Furthermore the invention relates to a new specific organic compound, as well as to flavor and fragrance formulations comprising at least one of the specific organic compounds.

Flavor and fragrance formulation (II)

The present invention relates to a process of manufacturing (6R,10R)-6,10,14-trimetylpentadecan-2-one in a multistep synthesis from 6,10-dimetylundec-5-en-2-one or 6,10-dimetylundeca-5,9-dien-2-one. The process is very advantageous in that it forms in an efficient way the desired chiral product from a mixture of stereoisomers of the starting product.

(6R,10R)-6,10,14-trimetylpentadecan-2-one prepared from 6,10-dimetylundec-5-en-2-one or 6,10-dimetylundeca-5,9-dien-2-one

The present invention relates to the use of specific organic compounds of formula (I) as flavor and fragrance material. Furthermore the invention relates to a new specific organic compound, as well as to flavor and fragrance formulations comprising at least one of the specific organic compounds.

Flavor and fragrance formulation (VI)

The present invention relates to an improved process for the production of 2-alkyl-3-butin-2-ols; especially to a new purification step.

Process for the production of 2-alkyl-3-butyn-2-ols

The present invention is directed to a process for the manufacture of 3,7-dimethyl-1-octen-3-ol comprising the following steps: The present invention is further directed to a process for the manufacture of isophytol and vitamin E, where a thus produced 3,7-dimethyl-1-octen-3-ol is used as starting material.

Process for the manufacture of 3,7-dimethyl-1-octen-3-ol

Saturated aliphatic ketones, e.g. hexahydropseudoionone, may be prepared by hydrogenating an olefinically unsaturated ketone, e.g. pseudoionone in a continuous fixed-bed mode in the absence of a solvent in the presence of a catalyst comprising a noble metal deposited on a carrier.

Process for the preparation of saturated aliphatic ketones

A process for the manufacture of an acetylenically unsaturated alcohol comprising reacting formaldehyde, an aldehyde or a ketone (a carbonyl compound) with acetylene in the presence of ammonia and an alkali metal hydroxide, the molar ratio of the alkali metal hydroxide to the carbonyl compound being less than 1:200. The reaction products, which depending on the starting carbonyl compound are propargyl alcohol or 1-monosubstituted or 1,1-disubstituted derivatives thereof, are of use as intermediates in the synthesis of many useful end products, inter alia in the field of vitamins and carotenoids.

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Basel, Switzerland

Johannes Tschumi