Patent ID: 6610626
Filing Date: 2003-08-26
Classification: B01J,C07C,C07F,C08G

Abstract:
A process for the in-situ generation of a metathesis active catalyst of the formula: comprising:contacting an NHC carbene with a dimer of the formula [(arene)MX1X]2 and an alkyne of the formula RCâ‰¡CR1; wherein M is ruthenium or osmium; X and X1 are the same or different and are each independently an anionic ligand; NHC is any N-heterocyclic carbene ligand; and, R and R1 are each independently hydrogen or a substituted or unsubstituted substituent selected from the group consisting of C1-C20 alkyl, C2-C20 alkenyl, C2-C20 alkynyl, aryl, C1-C20 carboxylate, C1-C20 alkoxy, C2-C20 alkenyloxy, C2-C20 alkynyloxy, aryloxy, C2-C20 alkoxycarbonyl, C1-C20 alkylthio, C1-C20 alkylsulfonyl and C1-C20 alkylsulfinyl.