1: 92 percent / H2 / 10percent Pd/C / ethyl acetate / 20 h 2: 15 percent / H2O View Scheme

hydrogen; palladium on activated charcoal in ethyl acetate 20 h;

Multi-step reaction with 2 steps 1: 90 percent / KOH / -10 deg C, then 2 h room temperature2: 82 percent / 15 percent aqueous HBr / 2 h / 95 °C