Half-sandwich N-heterocyclic carbene (NHC)-nickel complexes of the general formula [Ni(NHC)ClCp†] (Cp†=Cp, Cp*) efficiently catalyze the hydrosilylation of aldehydes and ketones at room temperature in the presence of a catalytic amount of sodium triethylborohydride and thus join the fairly exclusive club of well-defined nickel(II) catalyst precursors for the hydrosilylation of carbonyl functionalities
通式[Ni(NHC)ClCp † ](Cp † = Cp,Cp *)的半三明治N-杂环卡宾(NHC)-
镍配合物在室温下在有氮原子存在的情况下有效催化醛和酮的氢化
硅烷化催化量的
三乙基硼氢化钠,因此加入了明确定义的
镍(II)催化剂前体的排他性俱乐部,用于羰基官能团的氢化
硅烷化。值得注意的是分离出一种中间体氢化
镍配合物,事实证明该中间体是真正的催化剂前体。