Ring-Closing Metathesis of Allylsilanes/Electrophilic Desilylation To Prepare <i>exo</i>-Methylidenecycloalkanes. Short Syntheses of Teucladiol and Poitediol
作者:Matthew S. Dowling、Christopher D. Vanderwal
DOI:10.1021/ja906241w
日期:2009.10.28
A general strategy for the synthesis of exo-methylidenecycloalkanes, which are salient features of many terpenoid natural products, is presented. Ring-closing alkene metathesis of allylsilanes provides intermediates that can be protodesilylated with alkene transposition to afford the exocyclic alkene; alternatively, the reactivity of the cyclic allylsilane intermediate can be harnessed to introduce