Clariant Corporation

Cassella Aktiengesellschaft

Hoechst Aktiengesellschaft

Ticona Gmbh

Klaus Delpy

Wolfgang Bauer

Gerhard Zoller

Fritz Engelhardt

Karl-Heinz Keil

Helmut Scheckenbach

Bernhard Mees

Leonhard Unverdorben

Gert Nagl

Johannes Becherer

Stefan Disch

Manfred Schrod

Andreas Joachim Bittner

Eckard Kujath

Ralf Zerrer

Dirk Buhring

The present invention relates to a process for the preparation of compounds of the formula 1 ##STR1## by reacting a secondary acid amide of the formula 2 ##STR2## with an acid chloride of the formula 3 ##STR3## in the presence of N,N-diisopropyl-N-ethylamine. R.sup.1, R.sup.2 and R.sup.3 are alkyl or alkenyl radicals, if required also aryl radicals. The compounds of the formula 1 are suitable for use as insecticides or bleach activators.

Process for the preparation of diacylimides

Process for preparing N-alkylcarbazoles The present invention relates to a process for preparing N-alkylcarbazoles of the formula I ##STR1## where R.sup.1 is (C.sub.1 -C.sub.6)-alkyl and

Process for preparing N-alkylcarbazoles

The process for the preparation of polyarylene sulfones by oxidation of polyarylene sulfides with an oxidizing agent in the presence of a liquid is carried out under reduced pressure so that the liquid boils. The reaction temperature can easily be kept constant in the process.

Process for the oxidation of polyarlene compounds containing thioether

The present invention relates to a process for the preparation of ether-sulphonates of high purity, substantially free from extraneous salts, of the general formula I

Process for the preparation of ether-sulphonates

The present invention relates to a process for the preparation of compounds of the general formula I ##STR1## by reaction of compounds of the general formula II ##STR2## with compounds of the general formula III ##STR3## in inert aprotic solvents in the presence of a base and subsequent rearrangement of the resulting intermediate compound with an alkali metal hydroxide, characterized in that the intermediate compound is not isolated.

Process for the preparation of hydroxyalkylaminonitrobenzene derivatives

The present invention relates to a process for the preparation of pyrrole derivatives of the general formula I ##STR1## by reaction of a compound of the general formula III ##STR2## where R, R.sup.1 and R.sup.2 are defined as specified in claim 1, in a Vilsmeier reaction. The reaction is carried out in an easily degradable solvent, the reaction product is isolated with the aid of a water-miscible extractant and is purified by high-vacuum distillation in the short path evaporator.

Process for the preparation of pyrrole derivates

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Dietzenbach, Germany

Klaus Delpy