1: 20.8 percent / 1.) Fe(AN)6(BF4)2, 2.) 99percent HNO3 / acetonitrile / 1.) room temp., 30 min, 2.) 15 deg C, 3.5 h 2: 91 percent / TiCl3 / H2O; methanol / 1.5 h / Ambient temperature 3: NaNO2, 2N HCl / H2O / 0 °C 4: 73 percent / KI / H2O / room temp., 1 h, 85 deg C, 10 min 5: 95 percent / pyridine / methanol / 48 h / 90 °C View Scheme