1: 80 percent / tetrahydrofuran; ethanol; H2O / 1.5 h / Ambient temperature 2: aq. KOH / ethanol / 3.5 h / Heating 3: 88 percent / 30percent H2O2 / acetic acid / 1 h / Ambient temperature View Scheme

1: 80 percent / tetrahydrofuran; ethanol; H2O / 1.5 h / Ambient temperature 2: aq. KOH / ethanol / 3.5 h / Heating 3: 97 percent / SOCl2 / benzene / 3 h / Heating 4: 64 percent / NH3 / CHCl3 / 1) 10 deg C, 1 h; 2) room temp., 3 h View Scheme

1: 80 percent / tetrahydrofuran; ethanol; H2O / 1.5 h / Ambient temperature 2: aq. KOH / ethanol / 3.5 h / Heating View Scheme

With  hydrogen bromide in  acetic acid T=15°C; 1 h;   

Multi-step reaction with 3 steps 1: 80 percent / tetrahydrofuran; ethanol; H2O / 1.5 h / Ambient temperature2: aq. KOH / ethanol / 3.5 h / Heating3: 97 percent / SOCl2 / benzene / 3 h / Heating