Graphene-enhanced platinum-catalysed hydrosilylation of amides and chalcones: a sustainable strategy allocated with in situ heterogenization and multitask application of H<sub>2</sub>PtCl<sub>6</sub>
作者:Ning Li、Xiao-Yun Dong、Jing-Lei Zhang、Ke-Fang Yang、Zhan-Jiang Zheng、Wei-Qiang Zhang、Zi-Wei Gao、Li-Wen Xu
DOI:10.1039/c7ra10541j
日期:——
simple hydrosilylation-type reduction could be further used in the 1,4-hydrosilylation of chalcones. The rationally designed and in situ formed Pt@G@Si nanocatalyst is demonstrated to be highly effective in the 1,4-hydrosilylation of α,β-unsaturated enones, allowing for the facile synthesis of a variety of otherwise inaccessible substituted silyl enolates. In addition, with the aid of platinum catalyst
我们描述了在不同的有机转化中综合利用铂催化剂的新可持续战略,其中由简单的氢化硅烷化型还原制备的有机硅/石墨烯负载的铂催化剂可以进一步用于查耳酮的1,4-氢化硅烷化中。事实证明,合理设计和原位形成的Pt @ G @ Si纳米催化剂在α,β-不饱和烯酮的1,4-氢化硅烷化中非常有效,从而可以轻松合成各种本来无法获得的取代的甲硅烷基烯醇酸酯。另外,在这项工作中,还报道了借助铂催化剂残留物和TBAF,将一锅下游迈克尔取代的烯丙基甲硅烷基化物添加到丙烯酸烷基酯中。