L'addition de radicauxalkales a des composes allyliques ou propargyliques donne des adduits radicaux subissant une β-elimination avec des substituants tels que: 卤素、PhS、PhSO 2 、Bu 2 Sn、ou HgCl、pour form des propenes subitues allenes groupe 烷基和联合国自由基消除 qui regenere le 自由基烷基替代 de l'halogenure d'alkalimercure。Avec des substituants β-oxy, tels que: O 2 CR, OP(O) (OEt) 2 , O 3 SAr, OPh, OSiMe 3 , ou OH,
chalcogenide catalyzed electrophilicreaction is disclosed. A series of enantioenriched sulfones bearing remote stereogenic centers was achieved with good yields and high enantioselectivities with linear unsaturated sulfones and cyclic unsaturated sulfones. Mechanistic studies revealed the importance of the sulfone group in the improvement of the reactivity and enantioselectivity of the reaction.