KNH2 in dichloromethane; water 0.5 h; from -78 deg C room temp.;

in diethyl ether 0.5 h; from -78 deg C to room temp.;

1: 82 percent / diethyl ether / -78 °C 2: 60 percent / SO2Cl2 / CCl4 / 20 °C 3: 82 percent / KNH2 / NH3 / -78 °C View Scheme

1: 60 percent / SO2Cl2 / CCl4 / 20 °C 2: 82 percent / KNH2 / NH3 / -78 °C View Scheme

1: 94 percent / iodine, sodium hydroxide, potasium iodide, sodium sulphide / methanol 2: triethylamine / CH2Cl2 / 2 h / Ambient temperature 3: 70 percent / pyridine, bromine / CH2Cl2 / from -78 deg C to room temp. 4: 82 percent / diethyl ether / 0.5 h / from -78 deg C to room temp. 5: 60 percent / sulphuryl chloride 6: 82 percent / potassium amide / CH2Cl2; H2O / 0.5 h / from -78 deg C room temp. View Scheme

1: 90 percent / thionyl chloride 2: 82 percent / diethyl ether / 0.5 h / from -78 deg C to room temp. 3: 60 percent / sulphuryl chloride 4: 82 percent / potassium amide / CH2Cl2; H2O / 0.5 h / from -78 deg C room temp. View Scheme

1: triethylamine / CH2Cl2 / 2 h / Ambient temperature 2: 70 percent / pyridine, bromine / CH2Cl2 / from -78 deg C to room temp. 3: 82 percent / diethyl ether / 0.5 h / from -78 deg C to room temp. 4: 60 percent / sulphuryl chloride 5: 82 percent / potassium amide / CH2Cl2; H2O / 0.5 h / from -78 deg C room temp. View Scheme

1: 70 percent / pyridine, bromine / CH2Cl2 / from -78 deg C to room temp. 2: 82 percent / diethyl ether / 0.5 h / from -78 deg C to room temp. 3: 60 percent / sulphuryl chloride 4: 82 percent / potassium amide / CH2Cl2; H2O / 0.5 h / from -78 deg C room temp. View Scheme

in diethyl ether 0.5 h; from -78 deg C to room temp.;

1: 82 percent / diethyl ether / -78 °C 2: 60 percent / SO2Cl2 / CCl4 / 20 °C 3: 82 percent / KNH2 / NH3 / -78 °C View Scheme