| Abstract
| - β-Phenylseleno-α-tolylsulfonyl-substituted alkenes were synthesized via the three-componentconjugate−nucleophilic addition of acetylenic sulfones, phenylselenomagnesium bromide, andcarbonyl compounds, such as aldehydes, aliphatic ketones, or α,β-unsaturated enals or enones.The reaction is highly regio- and stereoselective with moderate to good yields. Functionalized allylicalcohols were obtained in the case of aldehydes and aliphatic ketones. In the case of α,β-unsaturatedenones, functionalized allylic alcohols or functionalized γ,δ-unsaturated ketones were obtained,depending on the structures of the ketones.
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