palladium 10 on activated carbon; hydrogen in ethanol P=2068.65 Torr; 2 h;

1.1: KH / tetrahydrofuran / 16 h / 20 °C 1.2: 78 percent / tetrahydrofuran / 2 h / -78 - 20 °C 2.1: 83 percent / N2H4*H2O / Pd(10 wt percent)/C / ethanol / 1 h / Heating View Scheme