potassium hydroxide; hydrazine hydrate in ethylene glycol 3 h; Heating;

1: 80 percent / 2 h / 160 °C 2: 70 percent / potassium hydroxide; hydrazine hydrate / ethane-1,2-diol / 3 h / Heating View Scheme

1: 60 percent / lithium aluminum hydride / toluene / 0 °C 2: 80 percent / 2 h / 160 °C 3: 70 percent / potassium hydroxide; hydrazine hydrate / ethane-1,2-diol / 3 h / Heating View Scheme

1: 95 percent / potassium carbonate / toluene / 24 h / Heating 2: 60 percent / lithium aluminum hydride / toluene / 0 °C 3: 80 percent / 2 h / 160 °C 4: 70 percent / potassium hydroxide; hydrazine hydrate / ethane-1,2-diol / 3 h / Heating View Scheme