ammonium formate; palladium on activated charcoal in methanol Ambient temperature;

1: 1.) CuBr*MeS2 / 1.) Et2O, cyclohexane, 0 deg C, 1 h, 2.) Et2O, cyclohexane, 0 deg C, 15 min 2: ammonium formate / 10 percent Pd/C / methanol / Ambient temperature View Scheme