1: 90 percent / ethanol / 0.5 h / Heating 2: 75 percent / NaBH3CN / acetic acid / 2 h / 40 °C 3: 90 percent / aq. NaOH / methanol / 1.5 h / Heating View Scheme

sodium hydroxide in 1,4-dioxane T=25°C; 17 h;