-The electro-oxidation of diacetone-L-sorbose alcohol to diacetone-2-keto-L-gulonic acid, an intermediate product in vitamin C synthesis, is complicated by the reaction of oxygen formation (cf. Hoffman-La Roche's compromise "Swiss-roll" mini-pilot development with a very low current density, the Ni-foil electrode, electrolyte NaOH ). The problem was solved by introducing Ni 2+ salts, NiSO 4 , and NH 3 or amino compounds into the alkaline electrolyte ( ). Electro-catalysis in this solution practically did not depend on such characteristics of the ECS as Ni anode composition and microstructure of its surface -high-performance the largest in the USSR industrial organic electro-synthesis was developed with inexpensive stainless steel anodes instead of nickel ones (details in ).