1: osmium(VIII) oxide; 4-methylmorpholine N-oxide / acetone; tert-butyl alcohol / 48 h / 20 °C / Inert atmosphere 2: sodium hypochlorite; 2,2,6,6-tetramethyl-1-piperidinyloxy, free radical; sodium hydrogencarbonate; potassium bromide / dichloromethane; water / 0.07 h / 0 °C 3: dimethyl sulfoxide / Irradiation; Cooling; Inert atmosphere View Scheme