1: 76 percent / LiAlH4 / diethyl ether / 5 h / Heating 2: PBr3 / CH2Cl2 / Heating 3: H2O / 4 h / Ambient temperature View Scheme

1: 76 percent / LiAlH4 / diethyl ether / 5 h / Heating 2: PBr3 / CH2Cl2 / Heating 3: H2O / 4 h / Ambient temperature 4: 70 percent / ClCOOCH2CCl3 / benzene / 2 h / Heating 5: 41 percent / dimethylformamide / 3 h / 80 °C 6: 1.25 g / H2NNH2*H2O / methanol / 5 h / 60 °C View Scheme