water; DCl T=140 - 150°C; P=1E-05 Torr; 40 h;

[iridium(III)(2-phenylpyridine)3] in N,N-dimethyl-formamide T=20°C; 20 h; Inert atmosphereSchlenk techniqueIrradiation;

1.1: tetrafluoroboric acid; sodium nitrite / water / 0.5 h / 0 °C 1.2: 0.5 h / 0 °C 2.1: [Fe(II)(bpmen)(CH3CN)2](ClO4)2; dihydrogen peroxide; acetic acid / acetonitrile / 0.5 h / 20 °C View Scheme

1: With tetrafluoroboric acid; sodium nitrite in water T=0°C; 0.5 h; 2: With copper(I) oxide; hypophosphorous ether in dichloromethane; water T=0°C; 0.5 h;