The Pd(I) dimer [Pd(μ-Br)( t Bu 3 P)] 2 is one of the best third-generation cross-coupling catalysts for carbon–carbon and carbon–heteroatom coupling reactions. Information on its characterisation and handling are presented, including its decomposition mechanism in the presence of oxygen. The catalytic activity of [Pd(μ-Br)( t Bu 3 P)] 2 is higher than either ( t Bu 3 P)Pd(0) or the in situ generated catalyst system based on Pd 2 (dba) 3 with t Bu 3 P. Examples of suitable reactions for which the Pd(I) dimer offers superior performance are given.
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Thomas J. Colacot (2009) studied this question.
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