Chiral Silver Amide Catalyst for the [3+2] Cycloaddition of α‐Amino Esters to Olefins

Silver lining: Highly exo-selective asymmetric [3+2] cycloaddition of α-amino ester Schiff bases with activated olefins proceeds in the presence of AgHMDS/1. The α-amino ester Schiff bases including those derived from aliphatic imines successfully reacted to afford the corresponding pyrrolidine derivatives in high yield with high exo- and enantioselectivities. EWG=electron-withdrawing group, HMDS=hexamethyldisilazide.