1: 87 percent / LiAlH4 / tetrahydrofuran / 0.5 h / 0 °C 2: 84 percent / acetic acid, trifluoroacetic anhydride / 80 °C 3: 90 percent / 50percent aq. acetic acid / 10 h / 90 °C View Scheme

lithium aluminium tetrahydride in tetrahydrofuran T=0°C; 0.5 h;