in water; acetonitrile T=20°C; 4 h; electrochemical oxidation at 1.55 V; Pt electrodes, Bu4NPF6;

in water; acetonitrile T=20°C; 4 h; electrochemical oxidation at 1.55 V; Pt electrodes, Bu4NPF6;

1: Dowex 1-X2 resin (OH-form) / methanol; H2O / 24 h / 22 °C 2: 1.) NaH / 1.) DMF, 22 deg C, 25 min, 2.) DMF, 22 deg C, 2 h 3: 74 percent / acetonitrile; H2O / 4 h / 20 °C / electrochemical oxidation at 1.55 V; Pt electrodes, Bu4NPF6 View Scheme

1: Dowex 1-X2 resin (OH-form) / methanol; H2O / 24 h / 22 °C 2: 1.) NaH / 1.) DMF, 22 deg C, 25 min, 2.) DMF, 22 deg C, 2 h 3: 74 percent / acetonitrile; H2O / 4 h / 20 °C / electrochemical oxidation at 1.55 V; Pt electrodes, Bu4NPF6 View Scheme

in water; acetonitrile T=20°C; 4 h; electrochemical oxidation at 1.55 V; Pt electrodes, Bu4NPF6;