1: 95 percent / LiAlH4 / diethyl ether / 3.5 h / Ambient temperature 2: 87 percent / SOCl2 / benzene / 2.5 h / Heating 3: 89 percent / LiAlH4 / diethyl ether / 3.5 h / Ambient temperature View Scheme

lithium aluminium tetrahydride in diethyl ether 3.5 h; Ambient temperature;