Novel Functional Hollow and Multihollow Organic Microspheres: Enhanced Efficiency in a Complex, Heterogeneous, Asymmetric, Three-Component/Triple Organocascade Reaction
作者:Fuqiang Dai、Zhiwei Zhao、Guangxin Xie、Dandan Feng、Xuebing Ma
DOI:10.1002/cctc.201601120
日期:2017.1.9
acid) (PS) microspheres to form core–shell structures, followed by removal of the PS core by etching in organic solvents. The as‐prepared hollow and multihollow microspheres were able to achieve better mass transfer in a complex heterogeneous asymmetric three‐component/triple cascade reaction and provided the products in good yields (31–61 %) with excellent stereoselectivities (80:20–93:7 dr, >99 % ee)
通过将Jørgensen-Hayashi有机催化剂与丙烯酰胺和苯乙烯单体交联进行初始分散共聚,开发了具有良好球形定义,高表面积和大孔体积的单分散空心和多空心Jørgensen-Hayashi功能化微球。由p在聚(苯乙烯/丙烯酸)(PS)微球表面分别形成二乙烯基苯和乙二醇二甲基丙烯酸酯,形成核-壳结构,然后通过在有机溶剂中蚀刻除去PS核。制备的空心和多空心微球能够在复杂的异质不对称三组分/三重级联反应中实现更好的质量转移,并提供具有良好立体选择性(80:20-93: 7 博士,> 99% ee)。