1: 70.3 percent / H2 / Pd/C / ethanol / 8 h / 50 °C / 75.01 Torr 2: 70.5 percent / dichlorodicyanobenzoquinone; bis(trimethylsilyl)trifluoro acetamide / dioxane / 18 h / Heating View Scheme

hydrogen; palladium on activated charcoal in ethanol T=50°C; P=75.006 Torr; 8 h;