potassium hydroxide in ethanol 10 h; Heating;

1: 48percent hydrobromic acid, acetic acid / 15 h / Heating 2: dimethylsulfoxide / 0.17 h / Ambient temperature View Scheme

1: 94 percent / LiAlH4 / diethyl ether / 7 h / Heating 2: 48percent hydrobromic acid, acetic acid / 15 h / Heating 3: dimethylsulfoxide / 0.17 h / Ambient temperature View Scheme

1: 59 percent / acetic acid / ethanol / 2 h / Heating 2: 94 percent / LiAlH4 / diethyl ether / 7 h / Heating 3: 48percent hydrobromic acid, acetic acid / 15 h / Heating 4: dimethylsulfoxide / 0.17 h / Ambient temperature View Scheme

in dimethyl sulfoxide 0.166667 h; Ambient temperature; Yield given;