A Ruthenium Catalyst for Olefin Metathesis Featuring an Anti-Bredt N-Heterocyclic Carbene Ligand.
A ruthenium complex bearing an "anti-Bredt" N-heterocyclic carbene was synthesized, characterized and evaluated as a catalyst for olefin metathesis. Good conversions were observed at room temperature for the formation of di- and tri-substituted olefins by ring-closing metathesis. It also allowed for the ring-opening metathesis polymerization of cyclooctadiene, as well as for the cross-metathesis ofcis-1,4-diacetoxy-2-butene with allyl-benzene, with enhancedZ/Ekinetic selectivity over classical NHC-based catalysts.
UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093-0343, USA.
David
D
Martin
Department of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA 91125, USA.
Vanessa M
VM
Marx
Department of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA 91125, USA.
Robert H
RH
Grubbs
UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093-0343, USA.
Guy
G
Bertrand
olefin metathesis; ruthenium; stable carbenes