The oxidation of diacetone‐L‐sorbose (DAS) into diacetone‐2‐keto‐L‐gulonic acid (DAG) is a step in the synthesis of vitamin C. This oxidation was carried out electrochemically in a stirred cell with the redox couple Ni (OH)2/β‐NiOOH as an electrochemical mediator. The anode was made of a current collector (nickel foam or platinized‐titanium) and of a suspension of Ni(OH)2 in KOH aqueous media. The mediated electrooxidation of DAS was achieved by the Ni(OH)2β‐NiOOH couple in solution which was regenerated at the current collector. This process required a two‐compartment reactor but afforded high yields of chemical conversion: we obtained 96% with a 48% faradaic yield. Previous works dealing with DAS electrooxidation to DAG on nickel anode are reviewed hereafter.