1: 30 g / HCl / 16 h / Heating 2: LiAlH4 / tetrahydrofuran / 3 h / Heating 3: 95 percent / hydrogen bromide / acetic acid / 21 h / 20 °C 4: sodium / ethanol / 1.) room temp., 1 h; 2.) reflux, 1 h View Scheme