Metal-Free Asymmetric 1,3-Dipolar Cycloaddition of N-Arylmaleimides to Azomethine Ylides Catalyzed by Chiral Tertiary Amine Thiourea
作者:Jian-Fei Bai、Liang-Liang Wang、Lin Peng、Yun-Long Guo、Jun-Nan Ming、Fei-Ying Wang、Xiao-Ying Xu、Li-Xin Wang
DOI:10.1002/ejoc.201100205
日期:2011.8
The first metal-free asymmetric 1,3-dipolar cycloaddition of N-arylmaleimides to azomethine ylides catalyzed by chiral tertiary amine thiourea to form multiply substituted pyrrolidines in excellent yields (up to 89 %) and enantioselectivities (up to 96 % ee) is presented. This procedure allows a rapid diversity-oriented synthesis of chiral pyrrolidine derivatives with high optical purity.
首次在手性叔胺硫脲催化下,N-芳基马来酰亚胺与偶氮甲碱叶立德的无金属不对称 1,3-偶极环加成反应以优异的产率(高达 89 %)和对映选择性(高达 96 % ee)形成多取代的吡咯烷. 该程序允许快速合成具有高光学纯度的手性吡咯烷衍生物。