Cu(<scp>i</scp>)-Catalyzed asymmetric <i>exo</i>-selective synthesis of substituted pyrrolidines <i>via</i> a 1,3-dipolar cycloaddition reaction
作者:Rayhan G. Biswas、Sumit K. Ray、Vinod K. Kannaujiya、Rajshekhar A. Unhale、Vinod K. Singh
DOI:10.1039/d1ob00494h
日期:——
An (R)-DM-BINAP/Cu(CH3CN)4BF4 complex catalyzed exo-selective asymmetric 1,3-dipolarcycloaddition (1,3-DCA) reaction of imino esters with α,β-unsaturated pyrazoleamides has been developed. A series of highly functionalized pyrrolidines with multiple stereogenic centers were obtained with good yields and diastereoselectivities and excellent enantioselectivities (up to 99% ee).