Preparation of (chloromethyl)palladium(II) derivatives from complexes of palladium dichloride by reaction with diazomethane or bis(chloromethyl)mercury
作者:Robert McCrindle、Gilles J. Arsenault、Rajeev Farwaha、Alan J. McAlees、David W. Sneddon
DOI:10.1039/dt9890000761
日期:——
showed at least some tendency to revert to the starting dichloro complexes by loss of the methylene moiety. Products of insertion into a Pd–Br bond are less readily formed than those of the corresponding chloride and the resulting bromomethyl derivatives are less stable than their chloromethyl analogues. Chloromethyl derivatives were also prepared from the dichloride by treatment with bis(chloromethyl)mercury
已经研究了用重氮甲烷处理一系列含有螯合配体的二氯化钯和二溴化物配合物。除了一个以外,都观察到单(卤代甲基)产物的形成。如果存在至少一种烯烃或膦配体,则来自二氯化钯配合物的亚甲基插入产物是相对稳定的,但是对于双胺或-硫化物配体,则不能分离出插入产物。但是,所有插入产物都显示出至少一些趋势,即由于亚甲基部分的损失而还原为起始的二氯配合物。插入到Pd-Br键中的产物比相应的氯化物更不易形成,并且生成的溴甲基衍生物的稳定性不如氯甲基类似物。