摘要/Abstract

含有三氟甲基的手性吡咯烷骨架是许多天然产物和药物的重要中间体，其高效的不对称合成方法是有机化学研究热点之一.通过Ming-Phos手性配体实现了铜催化的甲亚胺叶立德与β-三氟甲基-α，β-不饱和酮的不对称[3+2]环加成反应，以较高的产率和对映选择性合成了一系列含三氟甲基的手性吡咯烷化合物（ee值高达98%，产率高达99%）.该方法条件温和，操作简单，配体简单易得，且具有良好的底物普适性和官能团兼容性.
关键词: 铜催化, 三氟甲基, 环加成, 不对称催化, 叶立德
Chiral pyrrolidine skeletons containing trifluoromethyl group are core structural motifs in many natural products and medicines. As a consequence, extensive studies have been conducted on the exploitation of efficient methods for the asymmetric synthesis of such compounds. In this paper, Ming-Phos/Cu(I)-catalyzed asymmetric intermolecular[3+2] cycloaddition reaction of azomethine ylides and β-trifluoromethyl-α,β-unsaturated ketone was reported. A broad substrate scope was observed with high yield and enantioselectivity (up to 99% yield and 98% ee). The method is featured by its mild conditions, simple operation, easily available ligands and good functional group compatibility.
Key words: copper catalysis, trifluoromethyl, cycloaddition, enantioselectivity, ylides


PDF全文下载地址:

点我下载PDF