hydrogen fluoride in acetonitrile T=60°C;

1: imidazole / dimethylformamide 2: CH2Cl2 / -78 °C 3: 30percent H2O2 / tetrahydrofuran / 0 deg C to r.t. 4: 92 percent / tri-n-butyltin hydride, AIBN / benzene / Heating 5: I2, HgO, pyridine / CCl4 / Ambient temperature 6: (n-Bu3Sn)2, pyridine / benzene / Heating; Irradiation 7: 58 percent / 48percent HF / acetonitrile / 60 °C View Scheme

1: CH2Cl2 / -78 °C 2: 30percent H2O2 / tetrahydrofuran / 0 deg C to r.t. 3: 92 percent / tri-n-butyltin hydride, AIBN / benzene / Heating 4: I2, HgO, pyridine / CCl4 / Ambient temperature 5: (n-Bu3Sn)2, pyridine / benzene / Heating; Irradiation 6: 58 percent / 48percent HF / acetonitrile / 60 °C View Scheme

1: (n-Bu3Sn)2, pyridine / benzene / Heating; Irradiation 2: 58 percent / 48percent HF / acetonitrile / 60 °C View Scheme

1: 92 percent / tri-n-butyltin hydride, AIBN / benzene / Heating 2: I2, HgO, pyridine / CCl4 / Ambient temperature 3: (n-Bu3Sn)2, pyridine / benzene / Heating; Irradiation 4: 58 percent / 48percent HF / acetonitrile / 60 °C View Scheme