“…[2] The 1,3-dipolar cycloaddition of azomethine ylides [3] and activated alkenes represents as traightforward, powerful, and highly atom-economic solution to install pyrrolidine frameworks with up to four adjacent stereogenic centers.During the past two decades,t he exploration of novel catalytic asymmetric 1,3-dipolar cycloadditions with functionalized alkenes [for example,C ( =O)R, NO 2 ,S O 2 Ph, CN,P ( =O)(OR) 2 )] as dipolarophiles has drawn great attention. [5] Despite these tremendous advances,t he known synthetic methods still suffer from various problems,such as:1)high catalyst loading (at least 5mol %);2 )rarely using cheaper and more stable Cu II catalysts in contrast to Cu I catalysts; [6] 3) few examples of providing exo'-adducts as the major isomers; [7] 4) limited trifluomethylated starting materials. [5] Despite these tremendous advances,t he known synthetic methods still suffer from various problems,such as:1)high catalyst loading (at least 5mol %);2 )rarely using cheaper and more stable Cu II catalysts in contrast to Cu I catalysts; [6] 3) few examples of providing exo'-adducts as the major isomers; [7] 4) limited trifluomethylated starting materials.…”