A highly regioselective ortho-acetoxylation of N-(2-benzoylphenyl)benzamides has been achieved using a catalytic amount of Pd(OAc)(2) (10 mol %) and a stoichiometric amount of Phl(OAc)(2) in a mixture of acetic anhydride and acetic acid via C-H activation to produce the corresponding 2-acetoxybenzamides in good yields. ortho-Methoxylation has been accomplished using methanol under similar conditions. (C) 2011 Elsevier Ltd. All rights reserved.
Catalyst-Free Synthesis of Functionalized 4-Substituted-4<i>H</i>-Benzo[<i>d</i>][1,3]oxazines via Intramolecular Cyclization of <i>ortho-</i>Amide-<i>N</i>-tosylhydrazones