1: 95 percent / NaBH4 / ethanol; H2O / 3 h / Heating 2: CaCl2, HCl / benzene / 2 h / overnight 3: dimethylformamide / 4 h / Heating 4: 13 percent / acetic anhydride, HBr / acetic acid / 3.5 h / 60 - 70 °C 5: 0.4 g / K2CO3, Cu / dimethylformamide / 7 h / Heating View Scheme

Multi-step reaction with 3 steps 1: 95 percent / NaBH4 / ethanol; H2O / 3 h / Heating2: CaCl2, HCl / benzene / 2 h / overnight3: dimethylformamide / 4 h / Heating  

Multi-step reaction with 4 steps 1: 95 percent / NaBH4 / ethanol; H2O / 3 h / Heating2: CaCl2, HCl / benzene / 2 h / overnight3: dimethylformamide / 4 h / Heating4: 13 percent / acetic anhydride, HBr / acetic acid / 3.5 h / 60 - 70 °C  

With  sodium tetrahydroborate in  ethanol; water 3 h;  Heating;