1: 62 percent / H2 / Pd/C / methanol; acetic acid / 4 h / 3000.3 Torr 2: (tBuO)2 / CHCl3 / 2 h / 20 °C / Irradiation 3: 100 percent / H2 / 10percent Pd/C / methanol View Scheme

hydrogen; palladium on activated charcoal in methanol; acetic acid P=3000.3 Torr; 4 h;