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

US6624248B2 · kind B2 · utility

Assignee

• Degussa AG · DE

Inventors

• Olaf Burkhardt · Kalmthout, BE
• Jens Wöltinger · Hanau, DE
• Andreas Bommarius · Frankfurt, DE
• Juan Jose Almena Perea · Marburg, DE
• Hans Henniges · Bonn, DE
• Karlheinz Drauz · Alzenau, DE
• Andreas Karau · Hamburg, DE
• Jean-Louis Philippe · Dreieich, DE
• Hans-Peter Krimmer · Burgkirchen an der Alz, DE
• Gunther Oehme · Rostock, DE

Key dates

• Filing date: Jan 24, 2001
• Grant date: Sep 23, 2003
• Expiry date: Jan 24, 2021

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2531/828
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

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.