Enantioselective Functionalization of Indoles and Pyrroles via an in Situ-Formed Spiro Intermediate
作者:Chun-Xiang Zhuo、Qing-Feng Wu、Qiang Zhao、Qing-Long Xu、Shu-Li You
DOI:10.1021/ja403535a
日期:2013.6.5
Herein we report a highlyenantioselective synthesis of polycyclicindoles and pyrroles with up to 99% ee by an iridium catalyst system consisting of a commercially available iridium precursor and a readily accessible ligand. Investigation of the reaction mechanism led to the discovery of an unprecedented dearomatized spiro intermediate and its in situ migration phenomenon. The new reaction mode features