1: 97 percent / potassium hydroxide / H2O / Heating 2: 96 percent / potassium hydroxide / methanol / Heating; electrolysis 3: 82 percent / 10 percent sulphuric acid / dioxane / 3 h / Ambient temperature View Scheme

1: LiAlH4 / diethyl ether / 17 h / Ambient temperature 2: aq. oxalic acid, silica gel / CH2Cl2 / Ambient temperature 3: 80 percent / Et3N / CH2Cl2 / 2 h / 25 °C View Scheme

lithium aluminium tetrahydride in diethyl ether Ambient temperature;

1: LiAlH4 / tetrahydrofuran 2: MnO2 View Scheme