Abstract
This work demonstrated a smart route of biomass-derived glucose conversion in a biphasic aqueous deep eutectic solvent (DES), which was formed by glucose, ChCl, water, and co-solvent EtAc. Four kinds of value-added furan chemicals, including 5-Hydroxymethylfurfural (HMF), 5-(Acetyloxy) methyl furfural (AMF), 5-Chloromethylfurfural (CMF) and 5-Ethoxymethylfurfural (EMF) were successfully synthesized through a single-step reaction by monitoring the reaction conditions. High yield to 73.2% furan products, including 52.9% of HMF and 17.5% of AMF was obtained from a high concentration of glucose under mild conditions. Moreover, the produced furan mixture could further be converted into other useful chemicals, 2,5-furan dicarboxylic acid (FDCA) and 2,5-dimethyl furan (DMF), directly through simple oxidation and hydrogenation methods, respectively. This study suggested a sustainable synthetic pathway from abundant biomass glucose to furan products and value-added chemicals in the presence of completely green material and catalysts, which showed advantages for the industrial application.
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