Copper(I) Bromide Catalyzed Arylation of Cyclic Enamides and Naphthyl-1-acetamides Using Diaryliodonium Salts

Copper­(I) bromide catalyzed direct C–H arylation of cyclic enamides was achieved using diaryliodonium salts in the absence of base/additive at ambient temperature with high yields. A biologically active dihydro­[a]­benzocarbazole scaffold was synthesized using the established protocol. The scope of the current methodology was further extended for the synthesis of C4-, C7-aryl-substituted 1-naphthyl acetamides in good yields.