Palladium(0) catalyzed coupling oftrans-1,2-Bis(tri-n-butylstannyl)ethylene with aromatic halides: a convenient Synthesis of substitutedtrans-β-bromostyrenes
作者:Richard A. Haack、Thomas D. Penning、Stevan W. Djurić、John A. Dziuba
DOI:10.1016/0040-4039(88)85208-0
日期:1988.1
trans-β-Bromostyrenes have been conveniently prepared in moderate to high yield in a one-pot two-step sequence.trans-1,2-Bis(tri-n-butylstannyl)ethylene underwent a smooth palladium(0) catalyzed coupling reaction with 0.5 equivalents of aromatic bromide or iodide to furnish atrans-β-stannylstyrene. This intermediate vinyl stannane, without isolation, was then converted to the substitutedtrans-bromostyrene on
反式-β-溴苯乙烯可以方便地以一锅两步的顺序以中等到高收率的方式制备。反式-1,2-双(三-正丁基锡烷基)乙烯与0.5当量的芳族溴化物或碘化物进行光滑的钯(0)催化偶联反应,得到反式-β-锡烷基苯乙烯。然后,在不经分离的情况下,将该中间体乙烯基锡烷经分子溴处理转化为取代的反式-溴苯乙烯。