nitrogen‐containing arenes with alkynes proceeds by C−Hactivation, thus leading to biologically useful quaternary ammonium salts, including pyridoisoquinolinium, cinnolinium, isoquinolinium, and quinolizinium salts, in high yields. The results are comparable to those reactions catalyzed by rhodium and ruthenium complexes. The transformation of the salts into variousN‐heterocycles has also been demonstrated.