1: N-bromosuccinimide / CCl4 / 2 h / Heating; Irradiation 2: NaHCO3 / H2O; tetrahydrofuran / Ambient temperature 3: 73 percent / MnO2 / toluene / 5 h / Heating 4: 70 percent / diethylamino-sulfur trifluoride / CH2Cl2 / Ambient temperature 5: 58 percent / tetra-n-butylammonium fluoride / tetrahydrofuran / 0.67 h / Ambient temperature View Scheme

1: 70 percent / N-bromosuccinimide; benzoyl peroxide / CCl4 / 1 h / Heating 2: 84 percent / NaBH4 / dimethylformamide / 20 °C 3: 95 percent / TBAF*3H2O / tetrahydrofuran / 1 h / 20 °C 4: glutathione; O2 / 3 h / 37 °C View Scheme

potassium tert-butylate in N,N-dimethyl-formamide 1 h; Ambient temperature;

1: 70 percent / N-bromosuccinimide; benzoyl peroxide / CCl4 / 1 h / Heating 2: 84 percent / NaBH4 / dimethylformamide / 20 °C 3: 95 percent / TBAF*3H2O / tetrahydrofuran / 1 h / 20 °C 4: glutathione; O2 / 3 h / 37 °C View Scheme

With  ammonium sulfate; 1,1,1,3,3,3-hexamethyl-disilazane 4 h;  Heating;   

Multi-step reaction with 2 steps 1: N-bromosuccinimide / CCl4 / 2 h / Heating; Irradiation2: NaHCO3 / H2O; tetrahydrofuran / Ambient temperature  

Multi-step reaction with 3 steps 1: N-bromosuccinimide / CCl4 / 2 h / Heating; Irradiation2: NaHCO3 / H2O; tetrahydrofuran / Ambient temperature3: 73 percent / MnO2 / toluene / 5 h / Heating  

With  N-bromosuccinmide; dibenzoyl peroxide in  tetrachloromethane 1 h;  Heating;   

Multi-step reaction with 4 steps 1: N-bromosuccinimide / CCl4 / 2 h / Heating; Irradiation2: NaHCO3 / H2O; tetrahydrofuran / Ambient temperature3: 73 percent / MnO2 / toluene / 5 h / Heating4: 70 percent / diethylamino-sulfur trifluoride / CH2Cl2 / Ambient temperature