Continuous flow oxidation of HMF to FDCA by resin‐supported platinum catalysts in neat water

: The oxidation reaction of 5-hydroxymethylfurfural to the bioplastic monomer 2,5-furandicarboxylic acid over heterogenous resin-supported Pt catalysts was investigated in detail, under continuous flow, base-free conditions, and in neat water. The product was continuously obtained in 99 % yield by running the reaction at 120 °C, 303 s residence time, 1.2 mL min-1 O2 flow rate, and 7.7 bar O2 pressure. The product was isolated with a high space-time-yield of 46.0 g L-1  h-1 without purifications or acid/base treatments.