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Electrochemical Synthesis of α‐Hydroxycarboxylic Acids From Acetophenones

Abstract α‐Hydroxy carboxylic acids are synthesized in 80–86% isolated yields by electrochemical carboxylation of methyl aryl ketones in the presence of carbon dioxide (1 atm.) using a platinum cathode and a sacrificial magnesium anode at a constant current density of 10 mA/cm2. Reversibility of the carbonyl group reduction and generation of anionic radical were shown by cyclic voltammetry.