Photoinduced Hydroarylation and Cyclization of Alkenes with Luminescent Platinum(II) Complexes

Abstract Photoinduced hydroarylation of alkenes is an appealing synthetic strategy for arene functionalization. Herein, we demonstrated that aryl radicals generated from electron‐deficient aryl chlorides/bromides could be trapped by an array of terminal/internal aryl alkenes in the presence of [Pt(O^N^C^N)] under visible‐light (410 nm) irradiation, affording anti‐Markovnikov hydroarylated compounds in up to 95 % yield. Besides, a protocol for [Pt(O^N^C^N)]‐catalyzed intramolecular photocyclization of acrylanilides to give structurally diverse 3,4‐dihydroquinolinones has been developed.