1: LiAlH4 / diethyl ether / 2 h / Heating 2: LiAlH4 / pyridine / 2 h / Ambient temperature View Scheme

1: triethylbenzylammonium chloride, 45 percent NaOH / H2O; CHCl3 / 5 h / Heating 2: LiAlH4 / diethyl ether / 2 h / Heating 3: LiAlH4 / pyridine / 2 h / Ambient temperature View Scheme

lithium aluminium tetrahydride in pyridine 2 h; Ambient temperature;