1: 71 percent / 1,2-dichloro-ethane / 1.5 h / Heating 2: 59 percent / aq. HBr / 0.33 h / Heating 3: 65 percent / Amberlite IRA-400 (OH) / H2O View Scheme

Multi-step reaction with 3 steps 1: 85 percent / sodium borohydride / methanol / 20 h / Ambient temperature2: 73 percent / thionyl chloride / 0.75 h / Heating3: 95 percent / methanol / 24 h / Ambient temperature  

Multi-step reaction with 2 steps 1: 71 percent / 1,2-dichloro-ethane / 1.5 h / Heating2: 59 percent / aq. HBr / 0.33 h / Heating