Abstract
A kinetic study of the amination of chloro(η 3-methyl-2-butenyl)(triphenylphosphine)palladium ( 1) with dimethylamine shows that the rate is first order in complex 1 and second order in dimethylamine. At high amine concentrations this is also true for the amination of acetonitrile(η 3-3-methyl-2-butenyl)(triphenylphospine)palladium tetrafluoroborate ( 2b) with benzylamine. These kinetic data, together with structural information from NMR during the reaction, suggest a common mechanism for the two reactions which involves rapid addition of the first equivalent of amine to the η 3-allyl system, followed by rate determining deprotonation of the intermediate.
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