Using methyl sulfonamide, the product 2j was obtained in 83% yield on a small scale and 92% yield on a 5.0 mmol scale. Mesityl sulfonamide-substituted triflate 2k was isolated in 79%. With R 2 = Tf, a complex mixture was obtained during the cyclization step and 2l could not be further purified. Substrates with two electron-withdrawing substituents such as bis-Cl-disubstituted diphenylamines were viable for a selective cyclization yielding 2m in 63% yield. Finally, the naphthalene-substituted diaryliodazinium triflate 2n was isolated in 44% yield.