hydrogen; palladium on activated charcoal in N,N-dimethyl-formamide T=20°C; P=750.06 Torr; 1 h;

1: 89 percent / ethanol / 7 h / Heating 2: 79 percent / H2 / 10 percent Pd/C / dimethylformamide / 1 h / 20 °C / 750.06 Torr View Scheme