Mechanistic Studies on the Catalytic Oxidative Amination of Alkenes by Rhodium(I) Complexes with Hemilabile Phosphines
作者:M. Victoria Jiménez、M. Isabel Bartolomé、Jesús J. Pérez-Torrente、Daniel Gómez、F. Javier Modrego、Luis A. Oro
DOI:10.1002/cctc.201200510
日期:2013.1
Cationic rhodium(I) complexes with P,O‐functionalised arylphosphine ligands are efficient catalysts for the regioselective anti‐Markovnikov oxidative amination of styrene with piperidine. The mechanism of the catalytic reaction has been investigated by spectroscopic means under stoichiometric and catalytic conditions. In the presence of piperidine, the catalyst precursor [Rhκ2‐P,O‐Ph2P(CH2)3OEt}2]+
which revealed interactions between potassium and magnesium atoms via amide and benzyl group. The potassium magnesiate complex showed dramatic bimetallic synergistic effect in the catalyticintermolecularhydroamination of styrenes.