1: 84 percent / benzene / 1 h / Ambient temperature 2: 91 percent / H2 / 10percent Pd-C / ethanol 3: 62 percent / PPA / xylene; CHCl3 / 100 °C 4: NaBH4 / ethanol 5: 71 percent / 10percent H2SO4 / H2O / Heating 6: 91 percent / H2 / 10 percent Pd-C / ethanol View Scheme