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:
Mar. 08, 2016
Filed:
Jan. 25, 2011
Stijn Frans Monsaert, Zottegem, BE;
Francis Walter Cornelius Verpoort, Oekene, BE;
Stijn Frans Monsaert, Zottegem, BE;
Francis Walter Cornelius Verpoort, Oekene, BE;
UMICORE AG & CO. KG, Hanau-Wolfgang, DE;
Abstract
The invention relates to a method for preparation of ruthenium-based carbene catalysts with chelating alkylidene ligands (so-called 'Hoveyda-type catalysts') in a cross metathesis reaction by reacting a ruthenium-alkylidene complex with an olefin derivate in the presence of a polymer-supported cation-exchange resin (PSR) acting as a ligand (i.e. phosphine or amine) scavenger. Preferably, penta-coordinated ruthenium benzylidene or indenylidene carbene complexes are employed. The polymer-supported cation-exchange resin (PSR) may be an acidic resin (comprising sulfonic acid or carboxylic groups) or a resin containing carboxylic acid chloride (—COCl) groups or sulfonyl chloride (—SOCl) groups. The process is versatile and environmentally friendly; high yields are obtained.