Transition-metal and Photocatalyst-free Oxidative Cleavage of Aryl alkynes with PIDA/Iminoiodinanes in Visible Light

Abstract

We report a transition-metal and photocatalyst-free method for the oxidative cleavage of aryl alkynes using phenyliodine diacetate (PIDA) and iminoiodinane in visible light. Various terminal and internal aryl alkynes furnish aryl ketones as the product in moderate yields at room temperature. Mechanistic studies suggest iminoiodinane to serve as a nitrogen radical source and an arylating agent undergoing aryl group migration. 6 | J. Name., 2012, 00, 1-3This journal is