1.1: hydrogen / ethanol / 3 h / 760.05 Torr / Inert atmosphere 1.2: Inert atmosphere 2.1: sodium chlorite; sodium hypochlorite; 2,2,6,6-tetramethyl-1-piperidinyloxy, free radical / water; acetonitrile / 7 h / 35 °C / pH 6.7 / Inert atmosphere; aq. phosphate buffer 2.2: 0 °C / pH 8 / Inert atmosphere 2.3: pH 2 / Inert atmosphere View Scheme