Synthesis of 3,3-Spiroindolines via FeCl<sub>3</sub>-Mediated Cyclization of Aryl- or Alkene-Containing 3-Substituted N–Ac Indoles
作者:Raj Kumar Nandi、Régis Guillot、Cyrille Kouklovsky、Guillaume Vincent
DOI:10.1021/acs.orglett.6b00174
日期:2016.4.15
the cyclization of 3-substituted N-acetylindoles for the straightforward synthesis of 3,3-spiroindolines via the Friedel–Crafts reaction of an appended aryl group or the formal [2 + 2] cycloaddition of an appended alkene. Our strategy involves an Umpolung of the C2═C3 bond of the indole nucleus during FeCl3-mediatedhydroarylation or annulation reactions.