Formation of a Palladium Thioketone Complex from a Thiophosphinoyl Stabilized Li/Cl Carbenoid

An in situ generated thiophosphinoyl stabilized Li/Cl carbenoid reacts with Pd(PPh3)4 with formation of a palladium thioketone complex. The presence of both the thiophosphinoyl and silyl groups as anion-stabilizing substituents is insufficient to stabilize the expected alkylidene complex and instead results in a rearrangement to the thioketone compound.原位生成的经硫代膦酰基稳定的锂/氯类卡宾（carbenoid）与四(三苯基膦)钯(Pd(PPh₃)₄)发生反应，生成硫酮合钯配合物。研究表明，硫代膦酰基与硅基作为阴离子稳定取代基，不足以稳定预期的亚烷基配合物，反而会使体系重排为硫酮类化合物。