lithium aluminium tetrahydride in tetrahydrofuran 5 h; Heating;

1: With chloroformic acid ethyl ester in dichloromethane 8 h; Heating; 2: With potassium hydroxide; hydrazine in ethylene glycol 4 h; Heating;

1.1: AlH3; LiAlH4 / tetrahydrofuran / 15.5 h / 20 - 40 °C 1.2: HCl / tetrahydrofuran / 1 h 1.3: 89 percent / aq. KOH / tetrahydrofuran / pH 14 2.1: ethyl chloroformate / CH2Cl2 / 8 h / Heating 2.2: 89 percent / KOH; H2NNH2 / ethane-1,2-diol / 4 h / Heating View Scheme

1: ammonia 2: aq.-ethanolic sulfuric acid / elektrochem. Reduktion an einer amalgamierten Zink-Kathode View Scheme