Synthesis and Activity of a New Generation of Ruthenium-Based Olefin Metathesis Catalysts Coordinated with 1,3-Dimesityl-4,5-dihydroimidazol-2-ylidene Ligands

Matthias Scholl, Sheng Ding, Choon Woo Lee and Robert H. Grubbs

*The Arnold and Mabel Beckman Laboratory of Chemical Synthesis, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, Email: rhgcaltech.edu

M. Scholl, S. Ding, C. W. Lee, R. H. Grubbs, Org. Lett., 1999, 1, 953-956.

DOI: 10.1021/ol990909q

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Abstract

A family of 1,3-dimesityl-4,5-dihydroimidazol-2-ylidene-substituted ruthenium-based complexes has been prepared starting from RuCl₂(CHPh)(PCy₃)₂. These air- and water-tolerant complexes exhibit an increased ring-closing metathesis activity at elevated temperature when compared to that of the parent complex.

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Key Words

ring-closing metathesis

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ID: J54-Y1999