Silver(I)-catalyzed tandem reactions of N-activated aziridine-propargylic esters to pyrrolidin-3-one derivatives

An interesting silver(I)-catalyzed intramolecular cyclization of N-activated aziridine-propargylic esters 1 has been described in this context. A variety of pyrrolidin-3-one derivatives were obtained through an unexpected rare 5-exo-tet mode in moderate yields under mild conditions.