1: 73 percent / H2 / 10percent Pd/C / ethyl acetate / 24 h / 2585.7 Torr / Ambient temperature 2: 83 percent / 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) / acetic acid; H2O / 24 h / Ambient temperature 3: 90 percent / 10percent Pd/C / various solvent(s) / 0.5 h / Heating View Scheme