Asymmetric transformations arising from iminium activation of aromatic aldehydes are uncommon. In this work, an enantioselective organocatalytic domino aza-Michael–Henry reaction between N-(2-formylphenyl)sulfonamides and trans-β-nitro olefinsthrough iminium activation has been presented. This reaction proceeded smoothly to give chiral 3-nitro-1,2-dihydroquinolines in high yields with up to 88 % ee