Construction of fused- and spiro-oxa-[n.2.1] skeletons by a tandem epoxide rearrangement/intramolecular [3+2] cycloaddition of cyclopropanes with carbonyls
作者:Lu-Feng Wang、Zi-Fa Shi、Xiao-Ping Cao、Bao-Sheng Li、Peng An
DOI:10.1039/c4cc02641a
日期:——
A Lewis acid promoted tandem reaction of epoxide rearrangement and intramolecular [3+2] cycloaddition reaction of cyclopropanes with carbonyls formed by epoxide rearrangement in situ, which were obtained with difficulty by a general method, is reported. A wide variety of fused- and spiro-oxa-[n.2.1] skeletons could be efficiently constructed.
报道了路易斯酸促进的环氧化物重排的串联反应和环丙烷与通过原位环氧化物重排形成的羰基的分子内[3 + 2]环加成反应,这是通过常规方法难以获得的。可以有效地构建各种各样的熔融和螺氧基-[n.2.1]骨架。