1: 83 percent / Red-Al / toluene / 1.5 h / 60 - 62 °C 2: 82 percent / toluene / 80 - 90 °C 3: 80 percent / AlCl3 / 3 h / 170 °C 4: 90 percent / aq. NaOH / ethanol; H2O / Heating View Scheme

sodium bis(2-methoxyethoxy)aluminium dihydride in toluene T=60 - 62°C; 1.5 h;