2-Substituted allylsilanes on treatment with iodosbenzene and boron trifluoride etherate in dioxane afforded conjugated enals directly in good yield, from which α-methylen γ- and δ-lactones were synthesized.
在
二恶烷中用
碘代苯和
三氟化硼醚化物处理的2-取代的烯丙基
硅烷可直接以良好的收率得到共轭烯醛,由此合成α-亚甲基γ-和δ-内酯。