potassium hydroxide T=145 - 150°C; 10 h; Product distribution / selectivity;

hydrazine hydrate in methanol 1.5 h; Heating;

1: 80 percent / dimethylformamide / 2 h / Heating 2: 93 percent / hydrazine hydrate / methanol / 1.5 h / Heating View Scheme

1: 71 percent / piperidine hydrochloride / 6 h / 100 °C 2: 80 percent / dimethylformamide / 2 h / Heating 3: 93 percent / hydrazine hydrate / methanol / 1.5 h / Heating View Scheme