RUTHENIUM-KATALYSATOREN UND IHRE VERWENDUNG ZUR ASYMMETRISCHEN HYDRIERUNG VON SUBSTRATEN MIT SCHWACHER KOORDINATION

A catalyst of ruthenium (II) comprising bidentate phosphine ligands is described which is obtained by a process that comprises treating equimolar amounts of an appropriate Ru(II) complex and a bidentate diphosphine ligand with an acid of the formula HX, wherein X is a non-coordinating anion, said ac...

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Bibliographic Details
Main Authors RAUTENSTRAUCH, VALENTIN, DOBBS, A, VANHESSCHE, P
Format Patent
LanguageGerman
Published 30.09.2004
Edition7
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
THEIR RELEVANT APPARATUS
TRANSPORTING
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Summary:A catalyst of ruthenium (II) comprising bidentate phosphine ligands is described which is obtained by a process that comprises treating equimolar amounts of an appropriate Ru(II) complex and a bidentate diphosphine ligand with an acid of the formula HX, wherein X is a non-coordinating anion, said acid being used in a ratio of 1 molar equivalent per mole of Ru(II) complex and the treatment being carried out in a non-coordinating or weakly coordinating medium, under an oxygen-free atmosphere. Said catalyst is useful for the preparation of the preferred isomer of the Hedione3, having the configuration (+)-(1R)-cis, and of many other substrates comprising highly hindered carbon-carbon double bonds.
Bibliography:Application Number: DE1998620205T