Haarmann & Reimer Gmbh

Symrise Gmbh & Co Kg

Stefan Lambrecht

Horst Surburg

Matthias G&uuml;ntert

Volkmar Koppe

Peter Schieberle

Wolfgang Engel

Walter Kuhn

Günter Kindel

Erich Dilk

Matthias Guntert

Peter Worner

Horst Sommer

Werner Marks

Norbert Richter

Klaus Zahlmann

Matthias Güntert

Hans-Juergen Topp

Oliver Franke

G&uuml;nter Kindel

4,8-dimethyl-3,7-nonadien-2-one has aromatizing properties and increases the extendibility and intensity of the aroma when used in an aroma composition.

Aromas and aroma compositions containing 4,8-dimethyl-3,7-nonadien-2-one, and a method for the production thereof

Process for the preparation of 1-hydroperoxy-16-oxabicyclo[10.4.0]hexadecane (DDP-OOH), wherein 13-oxabicyclo[10.4.0]hexadec-1(12)-ene (DDP) and hydrogen peroxide are reacted in a diluent in the presence of a strong acid, the diluent has a pKa value of greater than or equal to 4.5 and the strong acid has a pKa value of less than or equal to 1.5, wherein after the reaction has taken place, the strong acid is neutralized with at least 0.9 molar equivalent of a base.

Process for the preparation of 1-hydroperoxy-16-oxabicyclo[10.4.0]hexadecane

The invention relates to a novel, industrial synthesis of 2-ethyl-3-methyl-1,4-diazine.

Production of 2-ethyl-3-methyl-1,4 diazine

The present invention relates to a novel process for the preparation of 2,3-pentanedione starting with hydroxyacetone and paraldehyde.

Process for the preparation of 2,3-pentanedione

The invention relates to a preparation process for derivatives by catalytic dehydrogenation of dibenzosuberone derivatives.

Production of dibenzosuberenone derivatives by catalytic dehydrogenation

4-alkanoyl-3-thiazolines and their use as odorants and flavorings

3,6-Dimethyl-2(3H)-benzofuranone is a new, valuable flavor material. A process for its industrial-scale preparation was developed.

Use of 3,6-dimethyl-2(3H)-benzofuranone as flavor material and new process for its preparation

A flavor composition comprising 8-ocimenyl esters of the formula

Mint and/or fruit flavor compositions

Substituted N-Mercaptoethyl-1,3-thiazolidines are novel compounds which can be used in odorants and flavorings.

N-(2-Mercaptoethyl)-1,3-thiazolidines and their use as odorants and flavorings

Compounds of the formula ##STR1## in which one of the radicals R.sup.1 and R.sup.2 is methyl and the other is vinyl and one of the radicals R.sup.3 and R.sup.4 is methyl and the other is ##STR2## in which R.sup.5 is hydrogen, alkyl or alkenyl, in particular C.sub.1 -C.sub.6 -alkyl or C.sub.2 -C.sub.6 -alkenyl, are particularly suitable as fragrances and flavors.

Growing community of inventors

Holzminden, Germany

Stefan Lambrecht