Reductive desulfonylation of α-nitro sulfones to give the corresponding nitro compounds was carried out conveniently with sodium dithionite, by using octylviologen as an electron-transfer catalyst in organic solvent–water two-phase systems. Sulfones which do not have an α-nitro group are not desulfonylated. A reaction scheme involving a nitroalkyl radical has been proposed.
K. K. Park, C. W. Lee and S. Y. Choi, J. Chem. Soc., Perkin Trans. 1, 1992, 601 DOI: 10.1039/P19920000601
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