Direct synthesis of 2-pyrone-4,6-dicarboxylic acid and trans-aconitic acid from renewable gallic acid and tannic acid

Abstract

2-Pyrone-4,6-dicarboxylic acid and trans-aconitic acid, both molecules of high interest for the synthesis of biobased and biodegradable polyesters, could be accessed through the oxidative cleavage of abundant and renewable gallic acid and tannic acid. By optimizing the reaction conditions the selectivity of the reaction could be shifted to either product and the procedure transferred to readily available derivatives of gallic acid.