Abstract
The kinetics of intermolecular alkene−alkyne (ene-yne) metathesis promoted by the first generation Grubbs catalyst (Cy3P)2Cl2Ru═CHPh (1) were investigated. The dissociated tricyclohexylphosphine plays an important kinetic role during the initial exchange with the terminal alkyne, resulting in a half-order rate dependence on 1 and first-order dependence on the alkyne.
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