hydrogen; palladium on activated charcoal in acetic acid T=25 - 28°C; P=42753.4 Torr; 8 h;

1: 92 percent / K2CO3 / dimethylformamide / 6.5 h / 80 - 90 °C 2: 57 percent / H2 / 10percent Pd/C / acetic acid / 8 h / 25 - 28 °C / 42753.4 Torr View Scheme