Aerobic Oxidation of 4-Alkyl-<i>N</i>,<i>N</i>-dimethylbenzylamines Catalyzed by <i>N</i>-Hydroxyphthalimide: Protonation-Driven Control over Regioselectivity
acetonitrile following addition of 0.1 M HClO4. This acid-induced change in regioselectivity has been successfully applied for selective functionalization of the less activated benzylic C–H bonds para to the CH2N(CH3)2 group in the aerobicoxidation of 4-alkyl-N,N-dimethylbenzylamines catalyzed by N-hydroxyphthalimide in acetic acid.