(Perfluoro)alkylsilyl-Substituted 2-[Bis(4-aryl)phosphino]pyridines: Synthesis and Comparison of Their Palladium Complexes in Methoxycarbonylation of Phenylacetylene in Regular Solvents and Supercritical CO<sub>2</sub>
作者:Jeroen. J. M. de Pater、C. Elizabeth P. Maljaars、Elwin de Wolf、Martin Lutz、Anthony L. Spek、Berth-Jan Deelman、Cornelis J. Elsevier、Gerard van Koten
DOI:10.1021/om050479+
日期:2005.10.1
derived from [Pd(OAc)2] as the palladium source with either 9 or 10 as ligand showed the same activity (TON = 4000, 50 min reaction time) and selectivity (about 98% for the branched product) as the catalyst obtained from [Pd(OAc)2] and 2-[diphenylphosphino]pyridine (2). Both 2 and 10 were also tested in this reactionusing a 1:1 mixture of methanol and α,α‘,α‘ ‘-trifluorotoluene as solvent system: fluorous