Cerium(IV) ammonium nitrate (CAN) mediated reaction of aryl sulfinates
and sodium iodide with alkenes afforded vinyl sulfones in very good
yields. Alkynes underwent similar reaction to give β-iodovinyl
sulfones, which on treatment with potassium carbonate afforded the
corresponding acetylenic sulfones in high yields.
cerium(IV) ammonium nitrate - sulfonylation - aryl
alkenes - alkenes - acetylenes - vinyl
sulfones - β-iodovinyl sulfones - acetylenic
sulfones