Developing a Highly Active Catalytic System Based on Cobalt Nanoparticles for Terminal and Internal Alkene Hydrosilylation
作者:Martin Jakoobi、Vincent Dardun、Laurent Veyre、Valérie Meille、Clément Camp、Chloé Thieuleux
DOI:10.1021/acs.joc.0c01439
日期:2020.9.18
easy-to-prepare cobalt nanoparticles (NPs) in solution as promising alternative catalysts for alkene hydrosilylation with the industrially relevant tertiary silane 1,1,1,3,5,5,5-heptamethyltrisiloxane (MDHM). The Co NPs demonstrated high activity when used at 30 °C for 3.5–7 h in toluene, with catalyst loadings 0.05–0.2 mol %, without additives. Under these mild conditions, a set of terminal alkenes were found
这项工作描述了易于制备的钴纳米颗粒(NPs)在溶液中的发展,作为与工业相关的叔硅烷1,1,1,3,5,5,5,5-七甲基三硅氧烷(MD H M )。当在30°C的甲苯中使用3.5到7 h时,Co NPs表现出高活性,催化剂负载量为0.05-0.2 mol%,不含添加剂。在这些温和条件下,发现一组末端烯烃与MD H反应M,仅以高达99%的产率生产抗马氏蛋白产物。此外,我们证明了使用紫外线辐照进一步活化这些钴纳米颗粒的可能性,不仅可以增强它们的催化性能,而且还可以使用内部烯烃(其中包括不饱和脂肪酸酯(油酸甲酯))促进串联异构化-氢化硅烷化反应,从而生成线性产物达到定量产量。