Electrochemical carboxylation of aryl thianthrenium salts with CO2 shows potential for aryl carboxylic acid synthesis, highlighting a novel mechanistic pathway.
A 1,3,5-triazine-mediated aryl anion-involved electrochemical carboxylation of aryl thianthrenium salts with CO2 is developed, which provides a useful method for the rapid synthesis of aryl carboxylic acids. Mechanistic investigations and density functional theory calculations indicated that the 1,3,5-triazine radical anion is the key intermediate for reducing aryl radicals to aryl anions.
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Yuan et al. (2025) studied this question.
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