Oxidation

特許 権利維持 PROBLEM TO BE SOLVED: To provide a method for oxidizing an objective compound for oxidation without using an organic solvent, by using a subcritical water or supercritical water as reaction solvent. ; SOLUTION: This method of oxidation is provided by using the subcritical water or supercritical water as reaction solvent and presenting a metal-based catalyst in a reaction system so as to be able to oxidize the objective compound for oxidation without using the organic solvent.