Oxidative Addition of Sn−C Bonds on Palladium(0): Identification of Palladium−Stannyl Species and a Facile Synthetic Route to Diphosphinostannylene−Palladium Complexes
作者:Yves Cabon、Irena Reboule、Martin Lutz、Robertus J. M. Klein Gebbink、Berth-Jan Deelman
DOI:10.1021/om1007067
日期:2010.11.22
phenyl-, and n-butyltin trichloride RSnCl3 (R = Me, Ph, nBu) react selectivily with palladium(0)−phosphine precursors through the unprecedented oxidative addition of the Sn−C bond. With [Pd(2-PyPPh2)3] (2-PyPPh2 = 2-pyridyldiphenylphoshine), the reaction cleanly leads to stable cationic dichlorostannylene palladium complexes of the general formula trans-[PdR(SnCl2(2-PyPPh2)2)][X] (X = Cl, R = Me ([5]Cl)
甲基,苯基和正丁基三氯化锡RSnCl 3(R = Me,Ph,n Bu)通过空前的Sn-C键氧化加成与钯(0)-膦前体选择性反应。用[Pd(2-PyPPh 2)3 ](2-PyPPh 2 = 2-吡啶基二苯基膦),反应可干净地得到通式为反式-[PdR(SnCl 2(2-PyPPh 2)2]的稳定的阳离子二氯锡钯钯配合物。)] [X](X = Cl,R = Me([ 5 ] Cl),R = Ph([ 6 ] Cl),R = n Bu([ 11 ] Cl); X = RSnCl 4,R = Me([ 5 ] [MeSnCl 4 ]),R = Ph([ 6 ] [PhSnCl 4 ]),R = n Bu([ 11 ] [ n BuSnCl 4 ])。通过吡啶基与二氯亚锡部分的分子内配位形成的SnCl 2(2-PyPPh 2)2片段可被视为具有明显抑制Pd中β-H消除能力的自组装夹钳型配体。 -烷基衍生物:含有Pd-