Free-Radical Carboalkynylation and Carboalkenylation of Olefins

Free-radical three-component carboalkynylation and -alkenylation of olefins have been developed. These Involve the addition, across the double bond of an unactivated olefin, of a radical species alpha- to an electron-withdrawing group and an alkenyl or alkynyl moiety, derived from the corresponding sulfones.