Fe-Catalyzed Allylic C–C-Bond Activation: Vinylcyclopropanes As Versatile a1,a3,d5-Synthons in Traceless Allylic Substitutions and [3 + 2]-Cycloadditions
作者:André P. Dieskau、Michael S. Holzwarth、Bernd Plietker
DOI:10.1021/ja300294a
日期:2012.3.21
The low-valent iron complex Bu(4)N[Fe(CO)(3)(NO)] (TBAFe) catalyzes the allylic C-C-bond activation of electron-poor vinyl cyclopropanes to generate synthetically useful a1,a3,d5-synthons which are prone to undergo multiple consecutive reactions. The versatility of this approach is demonstrated by a traceless allylic substitution and a formal [3 + 2] cycloaddition to give either functionalized acyclic
低价铁络合物 Bu(4)N[Fe(CO)(3)(NO)] (TBAFe) 催化缺乏电子的乙烯基环丙烷的烯丙基 CC 键活化以生成合成有用的 a1,a3,d5-合成子容易发生多个连续反应。这种方法的多功能性通过无痕烯丙基取代和正式的 [3 + 2] 环加成反应得到高产率和区域选择性的官能化无环产物或稠密取代的环戊烷和吡咯烷。