Coupling of N-Tosylhydrazones with Terminal Alkynes Catalyzed by Copper(I): Synthesis of Trisubstituted Allenes
作者:Qing Xiao、Ying Xia、Huan Li、Yan Zhang、Jianbo Wang
DOI:10.1002/anie.201005741
日期:2011.2.1
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。