Nd(OTf)<sub>3</sub>-Catalyzed Cascade Reactions of Vinylidenecyclopropanes with Enynol: A New Method for the Construction of the 5-7-6 Tricyclic Framework and Its Scope and Limitations
作者:Liang-Feng Yao、Min Shi
DOI:10.1002/ejoc.200900660
日期:2009.8
We report in this paper a Lewis acid [Nd(OTf)(3)]-catalyzed protocol to construct compounds containing a 5-7-6tricyclicframework in good yield from readily accessible starting materials vinylidenecyclopropanes (VDCPs) 1 and enynols 2a-c under mild conditions. Upon examination of the scope and limitations of this reaction, it was found that the corresponding highly functionalized cyclopentane derivatives