Chemistry–A European Journal

N??Heterocyclic Carbene and Phosphine Ruthenium Indenylidene Precatalysts: A Comparative Study in Olefin Metathesis

H Clavier, SP Nolan

Index: Clavier, Herve; Nolan, Steven P. Chemistry - A European Journal, 2007 , vol. 13, # 28 p. 8029 - 8036

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Citation Number: 134

Abstract

Abstract Kinetic studies on ring-closing metathesis of unhindered and hindered substrates using phosphine and N-heterocyclic carbene (NHC)-containing ruthenium-indenylidene complexes (first and second generation precatalysts, respectively) have been carried out. These studies reveal an appealing difference, between the phosphine and NHC-containing catalysts, associated with a distinctive rate-determining step in the reaction mechanism. ...