Application of Tripodal Linker Units to Immobilized Rhodium Complex Catalysts for Asymmetric Hydrogenation
作者:Norihisa Fukaya、Shun-ya Onozawa、Masae Ueda、Takayuki Miyaji、Yukio Takagi、Toshiyasu Sakakura、Hiroyuki Yasuda
DOI:10.1246/cl.2011.212
日期:2011.2.5
The tripodal linker unit with one bromopropyl group and three anchoring silicon atoms was used to immobilize a chiral phosphine–rhodium complex catalyst on an ordered mesoporous silica support. The rhodium and phosphorus leaching levels into the reaction solution after asymmetric hydrogenation were lower for this catalyst than for immobilized catalysts prepared using conventional triethoxysilane.
带有一个溴丙基和三个锚定硅原子的三足连结单元被用于将手性膦-铑复合催化剂固定在有序介孔硅支持体上。与使用常规三乙氧基硅烷制备的固定化催化剂相比,该催化剂在不对称氢化反应后,铑和磷的浸出水平更低。