(diazomethane, enol ethers, and others). Their nucleophilic carbenoid precursors could be trapped by an electrophilic olefin (ketene dithioacetal S,S-dioxides as Michael acceptors). Stable carbene Z-dimers could be obtained under various conditions. Bromine catalyzed isomerization to E-isomers proved to be reversible.
有机
硫代磺酰基卡宾通过
碘的热解或从α-
氯代α-有机
硫代砜及其衍
生物开始的α-消除反应生成。它们已被合适的亲核攻丝试剂(
重氮甲烷,
烯醇醚等)捕获。它们的亲核类
胡萝卜素前体可能被亲电
烯烃(
烯酮二
硫缩醛S,S-二
氧化物作为Michael受体)捕获。可以在各种条件下获得稳定的卡宾Z-二聚体。
溴催化异构化为电子异构体被证明是可逆的。