聚γ-[N,N-双(β-乙硫乙基)胺基]丙基硅氧烷铑配合物的合成及其催化硅氢化性能

Synthesis of .Poly-γ-[N,N-bis(β-ethylmercaptoethyl)amino] Propyl Silsesquioxane Rhodium Complex and Its Catalytic Hydrosilylation Behavior

从二(β-氟乙基)烯丙胺出发,通过乙硫醚化、硅氢加成、气相法二氧化硅固载,再与三氯化铑作用,合成了标题配合物,它们是烯烃与三乙氧基硅烷的硅氢加成反应的有效催化剂,对其催化特性进行了研究。

The title complex was synthesized from N,N-bis(β-ethylmercaptoethyl)y-(triethoxysilyl) propylamine by hydrolysis of the monomer or cohydrolysis of it with dodecyltriethoxysilane or phenyl-propyltriethoxysilane and immobilized on fumed silica, respectively, followed by reacting with rhodium chloride under Ar atmosphere in acetone. They are efficient catalysts for the hydrosilylation of olefins by triethoxysilane. The turnover number was more than 100 000 in one run in individual case. The plausible structure pattern of the complex is suggested. The influences of the nature of substrate, reaction temperature, the amount of complex used on the catalytic activity, as well as their recovery and reused property were investigated.