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Published August 30, 2004 | Supplemental Material
Journal Article Open

A New Ruthenium-Based Olefin Metathesis Catalyst Coordinated with 1,3-Dimesityl-1,4,5,6-tetrahydropyrimidin-2-ylidene: Synthesis, X-ray Structure, and Reactivity


The new ruthenium olefin metathesis catalyst 4 bearing a 5,5'-dimethyl-1,3-dimesityl-1,4,5,6-tetrahydropyrimidin-2-ylidene ligand was first synthesized from (PCy_3)_2(Cl)_2Ru ═ CHPh (1). The X-ray crystal structure of complex 4 has been determined and shows that the N-mesityl group of the six-membered carbene ligand and the benzylidene moiety are in close proximity (2.9 Å). This catalyst demonstrates moderate reactivity for both ring-closing olefin metathesis and ring-opening metathesis polymerization.

Additional Information

© 2004 American Chemical Society. Received 13 December 2003. Published online 5 August 2004. Published in print 1 August 2004. We acknowledge financial support for this work from the National Institutes of Health and BP Amoco. We thank Dr. Michael W. Day for determining the X-ray crystal structure.

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