Degussa Aktiengesellschaft

Degussa - Huls Ag

Evonik Degussa Gmbh

Degussa Gmbh

Juan Jose Almena Perea

Renat Kadyrov

Thomas Riermeier

Paul Knochel

Axel Monsees

Karlheinz Drauz

Ingo Klement

Matthias Lotz

Matthias Beller

Hans-Peter Krimmer

Kai Rossen

Andreas Sebastian Bommarius

Armin Boerner

Alexander Zapf

Olaf Burkhardt

Jens Holz

Hans Henniges

Andreas Karau

Jean-Louis Philippe

Gunther Oehme

Jens Woltinger

Odalys Esperanza Zayas Vargas

Wolf-Ruediger Krahnert

Stefan Klaus

The present invention is based on new ligand systems of the general formula (I). These ligand systems can be used advantageously in transition metal-catalyzed asymmetric syntheses. Likewise encompassed are the transition metal complexes thus prepared, a process for preparing the ligands and the use of the complexes in asymmetric synthesis. 

Unsymmetrically substituted phospholane catalysts

(Hetero)aromatic are prepared from halogen-substituted (hetero)aromatic compounds in the presence of a base and a palladium catalyst having a nonpyrophoric monodentate phosphane ligand. The phosphane ligand structure includes two radical groups having a tertiary carbon attached directly to phosphorous and one radical group having a primary carbon attached to the phosphorous.

Process for the preparation of aromatic aldehydes

The invention relates to ferrocenyl ligands of general formula (II), the S,S-enantiomer or the R,R-enantiomer of the ferrocenyl ligands of formula (II) being enriched, and a method for producing such ligands.

Ferrocenyl ligands and method for the production of such ligands

The invention relates to bidentate organophosphorous ferrocenyl ligands containing ligands of formula (I), to their complex compounds and to their utilization in catalytic processes.

Ferrocenyl ligands and the use thereof in catalysis

Molecular weight-enlarged, homogeneously soluble ligands are provided that are especially useful for hydrogenation catalysts, wherein the ligands contain homochiral active centers of bis(3,4-diarylphosphinyl)pyrrolidines, and their use in producing cataylsts for enantioselective reactions, as well as the catalysts thus produced.

Polymeric diphosphine ligands for homogeneously soluble hydrogenation catalysts, process for the production thereof and use

Method for homogeneous enantioselective hydrogenation using catalytic ferrocenyl bis-phosphine complexes

The use of the ligands and complexes of general formula I and II for catalytic, enantioselective hydrogenation.

Use of ferrocenyl ligands for catalytic, enantioselective hydrogenation

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Hanau, Germany

Juan Jose Almena Perea