1: acetonitrile / 0 °C / electrochemical reduction of (1) at Hg cathode and Pt anode, separated through diaphragma 2: acetonitrile / Ambient temperature 3: aq. HCl / 20 h / Heating 4: 200 °C / 0.01 Torr View Scheme

1: acetonitrile / Ambient temperature 2: aq. HCl / 20 h / Heating 3: 200 °C / 0.01 Torr View Scheme

1: aq. HCl / 20 h / Heating 2: 200 °C / 0.01 Torr View Scheme