The first successful example of the three‐component coupling of N‐alkylanilines, terminalalkynes, and alcohols was achieved at room temperature by a visible‐light‐mediated copper‐catalyzed photoredox hydrogen‐atom transfer process. This method allows preparation of propargylamines through uniquely selective α‐C−H bond activation of unactivated alkylalcohols. Preliminary studies indicate that formation
copper-catalyzed multicomponent coupling reaction of primary aromatic amines, rongalite, and alkynes for the direct synthesis of N-aryl propargylamines has been developed. This method could overcome the substrate limitation in A3 coupling reactions of primary aromatic amines, formaldehyde, and alkynes. Mechanisticstudies revealed that rongalite acts as not only the active C1 unit but also the accelerator