hydrogen; acetic acid; palladium on barium sulfate in ethanol P=760 Torr; 0.0333333 h; Ambient temperature;

1: 82 percent / Et3N, bis(triphenylphosphine)palladium(II) chloride, copper(I) iodide / acetonitrile / 1.5 h / 60 °C 2: 84 percent / AcOH, H2O / tetrahydrofuran / 14 h / Ambient temperature 3: 88 percent / H2, AcOH / 10percent Pd-BaSO4 / ethanol / 0.03 h / 760 Torr / Ambient temperature View Scheme