Visible‐Light‐Induced Metal‐Free Three‐Component Amidoheteroarylation of Alkenes to Synthesize β‐(Hetero)arylethylamines.

Herein, visible‐light‐induced metal‐free three‐component amidoheteroarylation of alkenes with quinoxalin‐2(1H)‐ones and N‐sulfonylaminopyridinium salts is developed. This protocol involves a radical relay process in which the N‐centered radicals undergo chemoselective addition to alkenes to form an alkyl radical that selectively combines with heteroarenes, leading to the formation of C−C and C−N bonds in one step under mild reaction conditions. The involved high efficiency and selectivity, wide substrate scope, and excellent functional‐group compatibility demonstrate the practicability of the developed protocol. [ABSTRACT FROM AUTHOR]