Copper(I)-catalysed oxidative C–N coupling of 2-aminopyridine with terminal alkynes featuring a CC bond cleavage promoted by visible light

Facile visible-light promoted copper-catalyzed aerobic oxidative C–N coupling between 2-aminopyridine and terminal alkynes at room temperature via CC triple bond cleavage is described. This reaction allows direct synthesis of biologically important pyridyl amides by utilization of commercially available starting materials without the need for bases/external oxidants.