The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 30, 2014
Filed:
May. 04, 2010
Roland Winde, Frankfurt, DE;
Angelino Doppiu, Seligenstadt, DE;
Eileen Woerner, Maintal, DE;
Andreas Rivas-nass, Schriesheim, DE;
Ralf Karch, Kleinostheim, DE;
Christian Slugovc, Graz, AT;
Christina Schinagl, Graz, AT;
Roland Winde, Frankfurt, DE;
Angelino Doppiu, Seligenstadt, DE;
Eileen Woerner, Maintal, DE;
Andreas Rivas-Nass, Schriesheim, DE;
Ralf Karch, Kleinostheim, DE;
Christian Slugovc, Graz, AT;
Christina Schinagl, Graz, AT;
Umicore AG & Co. KG, Hanau-Wolfgang, DE;
Graz University of Technology, Graz, AT;
Abstract
The invention relates to a method for preparation of ruthenium-based carbene catalysts with a chelating alkylidene ligand ('Hoveyda-type catalysts') by reacting a penta-coordinated ruthenium (II)-alkylidene complex of the type (L) (Py)XXRu(alkylidene) with a suitable olefin derivative in a cross metathesis reaction. The method delivers high yields and is conducted preferably in aromatic hydrocarbon solvents. The use of phosphine-containing Ru carbene complexes as starting materials can be avoided. Catalyst products with high purity, particularly with low Cu content, can be obtained.