Effect of Multivalency on the Performance of Enantioselective Separation Media for Chiral HPLC Prepared by Linking Multiple Selectors to a Porous Polymer Support via Aliphatic Dendrons
作者:Frank H. Ling、Victor Lu、Frantisek Svec、Jean M. J. Fréchet
DOI:10.1021/jo011005x
日期:2002.4.1
multivalent dendritic linker to monodisperse macroporous poly(2-hydroxyethyl methacrylate-co-ethylene dimethacrylate) beads have been prepared using two different approaches. The convergent method involves the preparation of ligands in solution and their subsequent attachment to the support. The divergent approach is based on the stepwise "on-bead" formation of the linker using methods that are typical
已经使用两种不同方法制备了包含L-脯氨酸茚满苯胺内酯手性选择剂的手性固定相(CSP),该手性固定剂通过多价树状连接基连接到单分散的大孔聚(甲基丙烯酸2-羟乙基酯-二甲基丙烯酸乙烯酯-共-乙烯)珠上。收敛方法涉及溶液中配体的制备及其随后与载体的连接。发散方法基于使用固相合成的典型方法的接头的逐步“珠上”形成。尽管会聚的CSP具有明确定义的配体,但它们的负载相对较低。相反,发散技术为CSP提供了更高的负载量,但对精确配体结构的控制更为有限。