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Keywords:

  • gold;
  • heterogeneous catalysis;
  • oxidation;
  • pectins;
  • renewable resources
Thumbnail image of graphical abstract

And isn′t it uronic: A mild, highly efficient and selective catalytic oxidation of pectin-derived uronic acids to the corresponding aldaric acids is reported. Fast, quantitative conversions (>99 %) of the starting materials are achieved with high selectivity (>97 %) at room temperature, using supported gold catalysts and air as oxidizing agent.