hydrogen; palladium on activated charcoal in methanol P=4550.9 Torr; 48 h;

1: 99 percent / 25percent H2SO4 / 12 h / 90 °C 2: 90 percent / concd. H2SO4, NaNO2 / 16 h / Ambient temperature 3: 95 percent / H2 / 10percent Pd/C / methanol / 48 h / 4550.9 Torr View Scheme

1: 90 percent / concd. H2SO4, NaNO2 / 16 h / Ambient temperature 2: 95 percent / H2 / 10percent Pd/C / methanol / 48 h / 4550.9 Torr View Scheme