Copper‐Catalyzed Stereoselective Direct Olefinic β‐C(sp2)−H Imidation of Acyclic Enamides with NFSI

Comprehensive Summary Herein, we reported a copper‐catalyzed stereoselective olefinic β‐C(sp 2 )–H imidation of acyclic enamides employing commercially available N ‐fluorobenzenesulfonimide (NFSI) as an imidating reagent, which allows for the synthesis of various imidation products with mainly E ‐selective control. This methodology was featured by being ligand‐free, having good efficacy, and exhibiting broad substrate scope for acyclic enamides. Mechanistically, the imidyl radical species might be involved in the reaction.