Radical reaction: A convenient synthesis of hydroxylisoindolones by a Pd‐catalyzed CHactivation/annulationreaction with near “click chemistry” efficiency is presented (see scheme; TBHP=tert‐butyl hydrogen peroxide). This methodology features short reaction times (10–30 min), high atom economy, wide substrate scope (22 examples), and good reaction yields (up to 93 %).
A room-temperature and efficient synthesis of 3-hydroxyisoindolin-1-ones by Pd-catalyzed C-H activation has been proposed. Wide ranges of benzamides and phenylglyoxylic acids indicated good functional group tolerance and wide potential application of this approach. Moreover, good yields of products further made it practical and attractive.