1: 85 percent / <Rh(CO)2Cl>2, triphenyl phosphite, H2 / benzene / 48 h / 80 °C / 76000 Torr 2: 95 percent / NaClO2, NaHPO4, 30percent H2O2 / H2O; acetonitrile / 10 °C 3: SOCl2 / 1 h / Heating 4: pyridine / 2 h / Heating View Scheme

1: 95 percent / NaClO2, NaHPO4, 30percent H2O2 / H2O; acetonitrile / 10 °C 2: SOCl2 / 1 h / Heating 3: pyridine / 2 h / Heating View Scheme

1: SOCl2 / 1 h / Heating 2: pyridine / 2 h / Heating View Scheme

pyridine 2 h; Heating; Yield given;