The easy way to allenes: An operationally simple reaction under mild conditions has led to the direct formation of trisubstituted allenes (see scheme; Ts=4‐toluenesulfonyl). An unprecedented copper–carbene migratory insertion process seems to take place, in contrast to classic copper(I)‐catalyzed reactions of diazo compounds.
制备烯
丙二烯的简单方法:在温和条件下操作简单的反应已导致直接形成三取代的烯
丙二烯(参见方案; Ts = 4-
甲苯磺酰基)。与经典的
铜(I)催化的重氮化合物反应相比,似乎发生了前所未有的
铜-卡宾迁移插入过程。