Abstract

A detailed kinetic investigation of the reaction of [Ru(Cl)H(PPh3)3] with cycloheptatriene, cyclohepta-1,3-diene, cyclooctatetraene, penta-1,4-diene. cycloocta-1,5-diene and dimethyl maleate, has been carried out spectrophotometrically in CH2Cl2 at 10 °C. It is shown that the major mechanism is viadissociation of PPh3 to give [Ru(Cl)H(PPh3)2] which then reacts with the olefin. There is also a second mechanism involving direct attack of the olefin on [Ru(Cl)H(PPh3)3].

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