1: 63 percent / lithium, ammonia / tetrahydrofuran / 3 h / -33 °C 2: 1.4 g / pyridine / 15 h / Ambient temperature 3: 1.) thionyl chloride, pyridine, 2.) LAH / 1.) ether 0 deg C, 10 min 4: pyridine 5: LiAlH4 6: pyridine 7: 63 percent / lithium, liq. ammonia / tetrahydrofuran; ethanol / 0.5 h View Scheme