l-Prolinamide derivatives as efficient organocatalysts for aldol reactions on water
作者:Gongkun Tang、Xianming Hu、Hans Josef Altenbach
DOI:10.1016/j.tetlet.2011.10.009
日期:2011.12
derivatives have been evaluated as potential organocatalysts for aldol reactions. To synthesize these catalysts, a novel and simple route has been developed using proline N-carboxyanhydride (proline-NCA). A new catalyst with a trifluoromethyl-sulfonamide group has been found exhibiting excellent diastereoselectivity (anti/syn: 97/3) and enantioselectivity (99% ee) with 10 mol % loading and being easily
已经评估了一系列1-脯氨酰胺衍生物作为醛醇缩合反应的潜在有机催化剂。为了合成这些催化剂,已经开发了使用脯氨酸N-羧基酐(脯氨酸-NCA)的新颖且简单的途径。已经发现具有三氟甲基磺酰胺基团的新催化剂在10mol%的负载下表现出优异的非对映选择性(抗/ syn:97/3)和对映选择性(99%ee),并且易于在水中再循环。