Hoechst Aktiengesellschaft

Celanese Gmbh

Aventis Research & Technologies Gmbh & Co Kg

Degussa-huels Aktiengesellschaft

Hoechst Research & Technology Deutschland Gmbh & Co. Kg

Aventis Corporation Gmbh

Hoechet Ag

Aventis Research & Technology Deutschland

Matthias Beller

Hartmut Fischer

Wolfgang Anton Herrmann

Ahmed M Tafesh

Heinz Strutz

Richard Walter Fischer

Christoph Brossmer

Ralf Pfirmann

Holger Geissler

Christian Kohlpaintner

Bernd Scharbert

Sandra Bogdanovic

Klaus Forstinger

Claus Peter Reisinger

Gerd Reinhardt

Thomas Riermeier

Markus Eckert

Thomas Gerdau

Klaus Raab

Alexander Zapf

Christoph Naumann

Laurent Weisse

Peter Gross

Vera Friderichs

Heinz Alexander

Wahed Moradi

Burkhard Zimmermann

Jurgen Herwig

Jurgen Krauter

Phosphanes, their method of production and use in metal complexes

Process for the preparation of N-acetyl protected amino acids of Formula I

Process for the preparation of N-acylamino acids

The invention relates to a process for the preparation of an amine by single-stage reaction of a C.sub.2 -C.sub.20 -olefin with a compound having an NH.sub.3 group, hydrogen and carbon monoxide, wherein the reaction takes place in the presence of a catalyst, which is present in water in dissolved or suspended form, and the catalyst contains at least two metals from group VIII of the Periodic Table of the Elements in elemental or bonded form.

Single-stage process for the preparation of amines

Disclosed and claimed are oxidation reactions involving, as a catalyst, a bis- and/or tris-(.mu.-oxo)-dimanganese complex salt of the formula I

Process for the oxidation of organic compounds in the presence of bis-

The invention relates to a process for preparing monofunctional, bifunctional or polyfunctional aromatic olefins of the formula (I) ##STR1## wherein a palladium compound of the formula (IV) ##STR2## is used as a catalyst in the preparation of the compounds of the formula (I).

Processs for preparing aromatic olefins using palladacycle catalysis

Bleach systems comprising bis- and tris(.mu.-oxo)dimanganese complex salts as catalyst Bis- and tris(.mu.-oxo)dimanganese complex salts of the formula

Bleach systems comprising bis- and tris(.mu.-oxo)dimanganese complex

The invention relates to a process for preparing aromatic acetylenes of the formula (I): Ar--C.tbd.C--R.sup.8a, where Ar is: ##STR1## by reacting haloaromatics or aryl sulfonates of the formula (II): Ar--X, with monosubstituted acetylenes of the formula (III): Ar--C.tbd.C--R.sup.8a, where Ar is defined above and X is bromine, chlorine or OSO.sub.2 R, in the presence of a palladium compound catalyst of the formula (IV): ##STR2## where R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6 are, independently of one another, hydrogen (C.sub.1 -C.sub.4)-alkyl, (C.sub.1 -C.sub.4)-alkoxy, fluorine, NH.sub.2, NH-alkyl-(C.sub.1 -C.sub.4), N(alkyl).sub.2 -(C.sub.1 -C.sub.4), CO.sub.2 -alkyl-(C.sub.1 -C.sub.4), OCO-alkyl-(C.sub.1 -C.sub.4), or phenyl, or R.sup.1 and R.sup.2, R.sup.2 and R.sup.3, R.sup.3 and R.sup.4, R.sup.5 and R.sup.6, together form an aliphatic or aromatic ring, and R.sup.7, R.sup.8 are (C.sub.1 -C.sub.8)-alkyl, (C.sub.3 -C.sub.12)-cycloalkyl, substituted or unsubstituted aryl, and Y is an anion of an inorganic or organic acid.

Process for preparing aromatic acetylenes using palladacycles as

A palladacycle of the formula (I) ##STR1## where: R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are, independently of one another, hydrogen, (C.sub.1 -C.sub.4)-alkyl, (C.sub.1 -C.sub.4)-alkoxy, fluorine, NH.sub.2, NH-alkyl(C.sub.1 -C.sub.4), N(alkyl).sub.2 -(C.sub.1 -C.sub.4), CO.sub.2 -(C.sub.1 -C.sub.4)alkyl, OCO-alkyl-(C.sub.1 -C.sub.4), or phenyl,

Palladacycles and a process for their preparation

The present invention relates to a process for the preparation of aromatic amines of the formula (I)

Synthesis of aromatic amines from chloroamatics

A process for preparing chiral epoxides using chiral manganese triazanonane complexes as oxidation catalysts. These catalysts have the general formula

Process for preparing chiral epoxides using chiral manganese

The chiral manganese-triazonone complex of the general formula (I) is disclosed:

Chiral manganese triazononane complexes

The present invention relates to a process for recovering the cobalt carbonyl catalyst used, in which a water-soluble cobalt salt is first prepared by addition of acid and this is subsequently precipitated as cobalt hydroxide. This cobalt hydroxide is then reacted with the N-acyl-.alpha.-amino acid derivative for whose preparation the cobalt carbonyl catalyst is intended, and the resulting cobalt-containing melt is converted into the cobalt carbonyl catalyst in the presence of a mixture of carbon monoxide and hydrogen.

Process for recovering cobalt carbonyl catalysts used in the preparation

The present invention relates to a process for preparing aromatic amines by reacting an aromatic nitro compound with carbon monoxide in a solvent mixture comprising water and a water-insoluble organic solvent by means of a catalyst comprising palladium and a water-soluble phosphine under a pressure of from 5 to 300 bar and at a temperature of from 50 to 200.degree. C., and separating the aqueous phase and the organic phase.

Process for preparing aromatic amines

The invention relates to a process for preparing monofunctional, bifunctional or polyfunctional aromatic olefins of the formula (I) ##STR1## by reaction of haloaromatics of the formula (II) ##STR2## with olefins of the formula (III) ##STR3## , wherein a palladium compound of the formula (IV) ##STR4## is used as the catalyst.

Process for preparing aromatic olefins using palladacycle catalysis

Process for preparing 3-(p-fluorophenyl)-2-methylpropionic acid and derivatives thereof of the formula (I), ##STR1## in which R is a hydroxy group, a linear or branched (C.sub.1 -C.sub.8)-alkoxy group, an aryloxygroup, an amino group or a (C.sub.1 -C.sub.8)-alkylamino group or a (C.sub.1 -C.sub.8)-dialkylamino group, by

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Niedernhausen, Germany

Matthias Beller