Abstract: The invention relates to a method for producing 2,3,5-trimethyl benzoquinone or a compound containing 2,3,5-trimethyl benzoquinone, the method comprising the following steps: Oxidation of 2,3,6-trimethylphenol with oxygen or an oxygen-containing gas in a two-or multi-phase reaction medium in the presence of a catalyst or catalyst system containing at least one copper (II)-halide to a mixture containing 2,3,5-trimethyl benzoquinone, characterized in that the reaction medium contains water and at least one secondary aliphatic acyclic alcohol having 6 or more, preferably 7 or more, carbon atoms.

Abstract: The invention relates to a method for producing 2,3,5-trimethyl benzoquinone or a compound containing 2,3,5-trimethyl benzoquinone, the method comprising the following steps: Oxidation of 2,3,6-trimethylphenol with oxygen or an oxygen-containing gas in a two- or multi-phase reaction medium in the presence of a catalyst or catalyst system containing at least one copper (II)-halide to a mixture containing 2,3,5-trimethyl benzoquinone, characterized in that the reaction medium contains water and at least one secondary aliphatic acyclic alcohol having 6 or more, preferably 7 or more, carbon atoms.

Abstract: The present invention provides a process for preparing cycloheptene and derivatives thereof by ring-closing metathesis of unsymmetric 1,8-dienes whose C—C double bond at the 8 position is nonterminal. Cycloheptene and the cycloheptanone, cycloheptylamine, cycloheptanecarbaldehyde, cycloheptanecarboxylic acid and cycloheptanecarbonyl chloride conversion products thereof, and the derivatives thereof, are important synthesis units for active ingredient compounds. The ring-closing metathesis is preferably performed as a reactive distillation. The unsymmetric 1,8-dienes for the ring-closing metathesis can be obtained by catalytic decarbonylation or oxidative decarboxylation from the corresponding unsaturated carboxylic acids or carboxylic acid derivatives.

Abstract: The present invention relates to a process for preparing cyclic compounds having at least eight carbon atoms and at least one keto group, to the cyclic compounds obtained by this process and to the use thereof, in particular as fragrance or for providing a fragrance.

Abstract: The present invention relates to a process for carrying out a chemical reaction in the presence of a ruthenium-carbene complex supported on silicon dioxide in a continuously operated reactor and also the use of corresponding supported catalysts in continuously operated reactors.

Abstract: The present invention relates to a process for preparing cyclic compounds having at least eight carbon atoms and at least one keto group, to the cyclic compounds obtained by this process and to the use thereof, in particular as fragrance or for providing a fragrance.

Abstract: A process for isomerizing olefinically unsaturated alcohols over supported noble metal catalysts with a support based on carbon in an oxygenous atmosphere.

Abstract: The present invention provides a process for preparing cycloheptene and derivatives thereof by ring-closing metathesis of unsymmetric 1,8-dienes whose C—C double bond at the 8 position is nonterminal. Cycloheptene and the cycloheptanone, cycloheptylamine, cycloheptanecarbaldehyde, cycloheptanecarboxylic acid and cycloheptanecarbonyl chloride conversion products thereof, and the derivatives thereof, are important synthesis units for active ingredient compounds. The ring-closing metathesis is preferably performed as a reactive distillation. The unsymmetric 1,8-dienes for the ring-closing metathesis can be obtained by catalytic decarbonylation or oxidative decarboxylation from the corresponding unsaturated carboxylic acids or carboxylic acid derivatives.

Abstract: A process for isomerizing olefinically unsaturated alcohols over supported noble metal catalysts with a support based on carbon in an oxygenous atmosphere.

Abstract: A process for isomerizing olefinically unsaturated alcohols over supported noble metal catalysts with a support based on carbon in an oxygenous atmosphere.

Abstract: The present invention relates to a process for carrying out a chemical reaction in the presence of a ruthenium-carbene complex supported on silicon dioxide in a continuously operated reactor and also the use of corresponding supported catalysts in continuously operated reactors.

Abstract: A process for isomerizing olefinically unsaturated alcohols over supported noble metal catalysts with a support based on carbon in an oxygenous atmosphere.