1: 98 percent / KOH / methanol; H2O / 8 h / Heating 2: thionyl chloride / benzene / 8 h 3: 0.1833 g / diethyl ether / 0.5 h / 0 °C View Scheme

1: 67 percent / tetrahydrofuran / 1.5 h / cooling 2: 98 percent / KOH / methanol; H2O / 8 h / Heating 3: thionyl chloride / benzene / 8 h 4: 0.1833 g / diethyl ether / 0.5 h / 0 °C View Scheme

1: thionyl chloride / benzene / 8 h 2: 0.1833 g / diethyl ether / 0.5 h / 0 °C View Scheme

1: 2.7577 g / 4 h / 260 - 280 °C / 0.4 Torr 2: 67 percent / tetrahydrofuran / 1.5 h / cooling 3: 98 percent / KOH / methanol; H2O / 8 h / Heating 4: thionyl chloride / benzene / 8 h 5: 0.1833 g / diethyl ether / 0.5 h / 0 °C View Scheme

in diethyl ether T=0°C; 0.5 h;