Elucidating the Effect of the Nucleophilicity of the Silyl Group in the Reduction of CO<sub>2</sub>to CO Mediated by Silyl-Copper(I) Complexes
作者:Gengwen Tan、Burgert Blom、Daniel Gallego、Elisabeth Irran、Matthias Driess
DOI:10.1002/chem.201402017
日期:2014.7.21
reduction of CO2 to CO with silyl‐copper(I) complexes bearing various silyl groups has been investigated. The silyl‐copper(I) complexes [LSi(X)Cu(IPr)] 2–5 (X=OtBu (2), OH (3), H (4), OC6F5 (5); L=CHCCH2}(CMe)(NAr)2, IPr=(CHNAr)2C:, Ar=2,6‐iPr2C6H3) bearing OtBu, OH, H, and OC6F5 as functional groups are readily accessible by the activation of the CuO and CuH bonds in (IPr)CuX with silylene LSi: (1)
已经研究了带有各种甲硅烷基的甲硅烷基铜(I)配合物将CO 2还原为CO的过程。甲硅烷基铜(I)配合物[ LSI(X)的Cu(IPR)] 2 - 5(X = O吨卜(2),OH(3),H(4),OC 6 ˚F 5(5),L = CH CCH 2 }(CME)(NAR)2,IPR =(CHNAr)2 C:Ar为2,6-我镨2 ç 6 ħ 3)轴承Ô吨卜,OH,H,和OC 6楼5作为官能团是由Cu构成的激活容易接近 O和铜在(IPR)的CuX H键可与亚甲硅烷LSI:(1)。这些配合物不能通过常用的金属转移反应轻易获得,这使得该方法在合成硅官能化的甲硅烷基金属配合物时相当独特且容易。在化合物中的硅原子上的官能团2 - 5使甲硅烷基到特征不同的亲核性,其朝向CO,得到不同的活动2。减少对CO配合物的甲硅烷基结构部分2和3,含有给电子基团(即,O- Ť在硅中心的Bu和OH)比化合物4和5的亲