Recent advances in polyoxometalates acid-catalyzed organic reactions

Polyoxometalates (POMs) have conducive properties such as controlled Bronsted and Lewis acidity, high thermal stability, nontoxic nature, tunable solubility, and less corrosiveness. POMs have been extensively applied in catalytic organic reactions and have an exciting prospect for industrial applications. This review summarized recent progress in the application of POMs as acid catalysts for various organic reactions in-cluding C -C bond formation, C -N bond formation, C -O bond formation, heterocyclic synthesis reactions, cyanosilylation and hydrolysis reactions. Various POMs catalysts including heteropoly acids (HPAs) and cationic functionalized HPAs with Bronsted acidity, HPAs supported on non-precious metal support with Bronsted acidity (or both Bronsted and Lewis acidity), transition metal substituted POMs with Lewis acid-ity were applied in above reactions. This review attempts to provide up-to-date information about POMs acid-catalyzed organic reactions and propose future prospects.(c) 2023 Published by Elsevier B.V. on behalf of Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences.