A new method for synthesis of cyclopropane-fused tetrahydroquinolines via rhodium-catalyzed intramol. cyclopropanation is reported.With 5 mol % of Rh2(piv)4 as catalyst, 1, 2-dichloroethane as solvent, ortho-vinylaniline substituted 1-sulfonyl-1, 2, 3-triazoles could be converted to useful target mols. at 50 °C with satisfactory yields.