Basf Se Corporation

Basf Aktiengesellschaft

Ulrich Griesbach

Jörg Botzem

Ralf Pelzer

Klaus Ebel

Florian Stecker

Karl Beck

Andreas Lanver

Andreas Fischer

Gabriele Gralla

Steffen Maas

Siegfried R Waldvogel

Ulrich Berens

Joern Kulisch

Itamar Michael Malkowsky

Martin Bock

Hermann Pütter

Lucia Königsmann

Nicola Christiane Aust

Harald Winsel

Mario Emmeluth

Margarethe Klos

Thomas Haag

Joerg Botzem

Joerg Kulisch

Itamar Malkowsky

Alcohols are prepared by electrochemical reductive coupling of an aromatic vinyl compound and a carbonyl compound in a process which comprises electrolyzing an electrolyte solution in an electrochemical cell, the electrolyte solution comprising the aromatic vinyl compound, the carbonyl compound and a non-aqueous protic solvent, such as methanol, wherein the electrolyte solution is in contact with a carbon-based cathode. Styrene is reacted with acetone to prepare 2-methyl-4-phenyl-2-butanol.

Process for preparing alcohols by electrochemical reductive coupling

The present invention relates to a washing machine comprising an electrochemical cell, to a process for electrochemical cleaning of fibers, to laundry detergents for electrochemical cleaning of fibers and to the fibers thus cleaned.

Electrochemical textile-washing process

The present invention relates to a process for preparing 4-isopropylcyclohexylmethanol (IPCHM) from para-cymene. The process for preparing 4-isopropylcyclohexylmethanol (IPCHM) comprises an electrochemical process for preparing a mixture of 4-isopropylbenzaldehyde dimethyl acetal and 4-(1-alkoxy-1-methylethyl)benzaldehyde dimethyl acetal, and intermediates passed through in the process, a hydrolysis step to form the corresponding benzaldehydes and a hydrogenation of this mixture to form 4-isopropylcyclohexylmethanol (IPCHM).

Process for preparing 4-isopropylcyclohexylmethanol

Process for the preparation of 2-substituted 4-hydroxy-4-methyltetrahydropyrans of the formula (I)  

Process for the preparation and isolation of 2-substituted tetrahydropyranols

The invention relates to a process for the preparation of m- or p-substituted phenylalkanols of the formula (I) in which Ris bonded to the phenyl ring in the m- or p-position and is C-C-alkyl, and R, R, Rand R, independently of one another, are hydrogen or methyl, wherein an unsubstituted phenylalkanol of the formula (II) in which R, R, Rand Rhave the meanings given under formula (I) is alkylated together with a C-C-alkyl halide of the formula (III)R-Hal&#x2003;&#x2003;(III),in which Rhas the meaning given under formula (I) and Hal is halogen, in the presence of a Friedel-Crafts catalyst to give an m- or p-alkyl-substituted phenylalkanol of the formula (I), then the reaction mixture is worked-up and the desired m- or p-alkyl-substituted phenylalkanol of the formula (I) is separated off, the other formed by-products are returned to the reaction mixture and these are isomerized in the presence of a Friedel-Crafts catalyst to give the desired m- or p-alkyl-substituted phenylalkanol. From the m- or p-alkyl-substituted phenylalkanols of the formula (I), it is possible to form, by oxidation or dehydrogenation, as products of value, the corresponding aldehydes, which play an interesting role as fragrances and aroma chemicals.

Process for preparing M- or P-substituted phenylalkanols by alkylation

The invention relates to a process for the preparation of m-substituted phenylalkanols of the formula (I) in which Ris C-C-alkyl and R, R, Rand R, independently of one another, are hydrogen or methyl, wherein a p-substituted phenylalkanol of the formula (II) in which R, R, R, Rand Rhaving the meanings given under formula (I), is isomerized in the presence of a Friedel-Crafts catalyst to give an m-substituted phenylalkanol of the formula (I). From the m-substituted phenylalkanols of the formula (I) it is possible to form, by oxidation or dehydrogenation, as products of value, the corresponding aldehydes, which are known as fragrances and aroma chemicals.

Method for producing M-substituted phenylalkanols by means of isomerization

The present invention relates to 3-tert-butylbenzaldehyde dimethyl acetal and to 3-tert-butylbenzyl methyl ether and to an electrochemical method for producing 3-tert-butyl-benzaldehyde dimethyl acetal and intermediates passed through in said method.

Electrochemical method for producing 3-tert-butylbenzaldehyde dimethyl acetal

The present invention relates to a process for the preparation of 2-substituted 4-hydroxy-4-methyltetrahydropyranols by reacting 3-methylbut-3-en-1-ol (isoprenol) with the corresponding aldehydes in the presence of a strongly acidic cation exchanger. Specifically, the present invention relates to a corresponding process for the preparation of 2-isobutyl-4-hydroxy-4-methyltetrahydropyran by reacting isoprenol with isovaleraldehyde.

Method for producing 2-substituted tetrahydropyranols

The present invention relates to a process for preparing 2-methyl-3-(4-tert-butyl-phenyl)propanal with high para-isomer purity, and also to a process for preparing 4-tert-butylbenzaldehyde with high para-isomer purity.

Process for preparing 2-methyl-3-(4-tert-butylphenyl)propanal with high para-isomer purity

The invention relates to a process for the preparation of m-substituted alkyltoluenes of the formula (I) in which Ris C-C-alkyl, wherein a p-substituted alkyltoluene of the formula (II) in which Rhas the meaning given under formula (I), is isomerized in the presence of ionic liquids to give an m-substituted alkyltoluene of the formula (I). The m-substituted alkyltoluenes obtainable according to the invention are starting compounds for the preparation of fragrances and aroma substances.

Process for the preparation of m-substituted alkyltoluenes by isomerization with ionic liquids as catalysts

The present invention relates to a process for preparing an amine, which comprises the step cathodic reduction of a corresponding oxime derivative of the general formula (I) where

Electrochemical preparation of sterically hindered amines

Process for preparing primary amines having a cyclopropyl unit and a primary amino group bound to an aliphatic or cycloaliphatic carbon atom (amine A) by cathodically reducing oximes having a cyclopropyl unit or oxime derivatives in which the hydrogen atom in the oxime group has been replaced by an alkyl or acyl group (oxime O) at a temperature of from 50 to 100&#xb0; C. in an essentially anhydrous electrolyte solution in a divided electrolysis cell.

Method for the production of primary amines comprising a primary amino group which bound to an aliphatic or cycloaliphatic C-atom, and a cyclopropyl unit

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Mannheim, Germany

Ulrich Griesbach