Intermolecular Heterocoupling Reaction between N-Sulfonylimines and Aliphatic Ketones Promoted by Samarium (II) Iodide

N-sulfonylimines (1) were induced by samarium(II) iodide to produce radical anion intermediates (2) in situ, which were trapped by aliphatic ketones (4) to afford heterocoupling products β-sulfonamido alcohols (5) in moderate to good yields under mild and neutral conditions.