Extending Pummerer Reaction Chemistry. Application to the Oxidative Cyclization of Indole Derivatives
作者:Ken S. Feldman、Daniela Boneva Vidulova
DOI:10.1021/ol0493406
日期:2004.5.1
Treatment of 2-(phenylsulfinyl)indoles bearing a pendant nucleophile at C(3) with Tf(2)O/lutidine triggers a Pummerer-like cyclization to furnish 3,3-spirocyclic-2-(phenylthio)indolenine products, which can, in turn, be hydrolyzed to 3,3-spirocyclic oxindoles. [reaction: see text]