Fleming, Ian; Lawrence, Nicholas J., Journal of the Chemical Society. Perkin transactions I, 1992, # 24, p. 3309 - 3326
作者:Fleming, Ian、Lawrence, Nicholas J.
DOI:——
日期:——
Fleming Ian, Lawrence Nicholas J., J. Chem. Soc. PerKin Trans. I, (1992) N 24, S 3309-3326
作者:Fleming Ian, Lawrence Nicholas J.
DOI:——
日期:——
[(18-C-6)K][(N≡C)Cu<sup>I</sup>–SiMe<sub>2</sub>Ph], a Potassium Silylcyanocuprate as a Catalyst Model for Silylation Reactions with Silylboranes: Syntheses, Structures, and Catalytic Properties
作者:Jacqueline Plotzitzka、Christian Kleeberg
DOI:10.1021/acs.inorgchem.7b00749
日期:2017.6.5
extension allows the efficient silylation of ketones. In addition, a number of peculiarities of the catalytic reaction are readily rationalized on the basis of the mechanistic insight already established using [(NHC)Cu–SiMe2Ph] as a model catalyst. Analogously to the NHC model system, the reaction of 2 with the silylborane 1 furnishes the silylcyanocuprate [(18-C-6)K][NC–Cu–SiMe2Ph] (3) as a potential crucial
Cu I催化的甲硅烷基硼烷(特别是pinB–SiMe 2 Ph(1))作为甲硅烷基来源的甲硅烷基化反应最近受到了广泛的关注。CuCN / NaOMe是最有效,用途最多且最简单的催化剂体系之一。然而,对于催化相关的物种一无所知。使用基于NHC的模型催化剂,已确定类型[(NHC)Cu-SiMe 2 Ph]的铜甲硅烷基络合物是这些催化过程中的关键物种。定义明确且具有光谱学和结构特征的复合物[(18-C-6)K] [NC–Cu–O t Bu](2),作为催化系统的模型,CuCN / NaOMe对既定的示例性底物(醛,亚胺,α,β-不饱和羰基)表现出可比的催化活性,并且可以使酮有效地甲硅烷基化。另外,基于已经使用[(NHC)Cu-SiMe 2 Ph]作为模型催化剂建立的机理洞察力,很容易合理化催化反应的许多特殊性。与NHC模型系统类似,2与甲硅烷基硼烷1的反应提供了甲硅烷基氰基丙酸酯[(18-C-6)K]