Basf Aktiengesellschaft

Other

Andreas Weiper-Idelmann

Andreas Kramer

Heinz Hannebaum

Hartwig Voss

Dieter Hermeling

Michael Schmitt

Hermann P&uuml;tter

Claus-Peter Klages

Hermann Puetter

Regina Benfer

Mathias Haake

Luise Spiske

Hermann Pütter

Markus Frede

J&ouml;rg Therre

Erich Kromm

Lothar F Schaefer

Matthias Fryda

Harald Schlueter

Claudia Merk

Hans-Georg G&ouml;bbel

Georg Schnitzer

Franz Suetsch

Michael Schulik

Alexander Hampel

Rudolf Krueger

Volker Steuer

Karl-Heinz Schehlmann

Rolf Golombek

Gunther Huber

J&uuml;rgen Schossig

A process for preparing butanetetracarboxylic acid derivatives as product of value I by coupled electrosynthesis which comprises cathodically reducing a compound selected from the group consisting of maleic esters, maleic ester derivatives, fumaric esters and fumaric ester derivatives where at least one hydrogen atom in positions 2 and 3 may be replaced by inert groups and obtaining a product of value II at the node.

Production of butane tetracarboxylic acid derivative by means of coupled electrosynthesis

The present invention relates to a continuous process for the preparation of cinnamaldehyde or cinnamaldehyde derivatives by continuous reaction of benzaldehyde derivatives with alkanals in the presence of bases and optionally subsequent continuous hydrogenation in a circulation reactor in the presence of a suspension catalyst and hydrogen to give dihydrocinnamaldehyde derivatives.

Continuous method for production of cinnamaldehyde and dihydrocinnamaldehyde derivatives

Diamond electrodes

Selective hydrolysis of acetals or ketals in the presence of phthalides

A process for the electrochemical reduction of an organic compound by bringing the organic compound into contact with a cathode, wherein the cathode comprises a support made of an electrically conductive material and an electrically conductive, cathodically polarized layer formed thereon in situ by alluviation.

Electrochemical reduction of organic compounds

Dyeing cellulose-containing textile material with hydrogenated indigo

Benzaldehyde dialkyl acetals of the general formula I ##STR1## where R.sup.1 is C.sub.1 -C.sub.6 -alkyl, R.sup.2 is C.sub.1 -C.sub.6 -alkyl, C.sub.1 -C.sub.6 -alkoxy, halogen, cyano or carboxyalkyl where the alkyl group is of 1 to 6 carbon atoms, n is an integer of from 1 to 3 and the radicals R.sup.2 may be identical or different when n is &gt;1, are prepared by electrochemical oxidation of a substituted toluene compound of the general formula II ##STR2## by a process in which a substituted toluene compound II is oxidized in the presence of an alkanol R.sup.1 --OH and of an auxiliary electrolyte in an electrolysis cell, the reaction solution thus obtained is let down outside the electrolysis cell to a pressure which is from 10 mbar to 10 bar lower than the pressure in the electrolysis cell and

Preparation of benzaldehyde dialkyl acetals

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Waldsee, Germany

Andreas Weiper-Idelmann