Multifunctional Molybdate-Based Acidic Ionic Liquid: A Triple-Function System for Isomerization, Dehydration, and Oxidation in the One-Pot Synthesis of 2,5-Diformylfuran from Glucose

To contribute to alleviating the depletion of fossil fuel resources and address environmental issues, renewable biomass is being studied in depth for the synthesis of valuable petroleum derivatives. The direct transformation of abundant glucose resources into 2,5-diformylfuran (DFF) is a promising route for producing an alternative candidate on an industrial scale. In this work, we developed a practical approach for preparing various molybdate-based acidic ionic liquid systems for the “one-pot, one-step” production of DFF from glucose, yielding approximately 40% in an acceptable time frame of 3 h through an approachable procedure. The results indicated the high catalytic performance of multifunctional ionic liquid catalysts bearing Lewis acid, Brönsted acid, and oxidation sites to promote DFF production. Therefore, the findings of this work highlight the potential application of molybdate-based acidic ionic liquids as a sustainable strategy for synthesizing high-value chemicals on a large scale.