Rational Design of Highly Active “Hybrid” Phosphine–Phosphinite Pincer Iridium Catalysts for Alkane Metathesis

…, RR Schrock, M Brookhart, AS Goldman

Index: Dobereiner, Graham E.; Yuan, Jian; Schrock, Richard R.; Goldman, Alan S.; Hackenberg, Jason D. Journal of the American Chemical Society, 2013 , vol. 135, # 34 p. 12572 - 12575

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Citation Number: 21

Abstract

Both the bisphosphine and bisphosphinite pincer complexes (t Bu4PCP) IrH2 and (t Bu4POCOP) IrH2 can cocatalyze alkane metathesis in tandem with olefin metathesis catalysts, but the two complexes have different resting states during catalysis, suggesting that different steps are turnover-limiting in each case. This led to the hypothesis that a complex with intermediate properties would be catalytically more active than either of ...