CuCl-Catalyzed Conversion of Aryl Boronic Acids and Carbon Dioxide to Carboxylate Esters

The CuCl-catalyzed reaction of aryl boronic acid with carbon dioxide to form carboxylate ester after treatment with CH3I has been developed. The procedure featured mild conditions and good functional group tolerances. A diverse range of aryl boronic acids were effectively converted into carboxylate esters. Even those bearing sensitive groups such as carbonyl, ester, and amide could produce the desired products in good yields.