1: 100 percent / H2 / 20percent Pd(OH)2/C / ethanol / 2 h / 760 Torr / Ambient temperature 2: CaCO3 / benzene / 4 h / 80 °C 3: 25 percent / 30percent H2O2, AcOH / H2O / 60 °C 4: 89 percent / imidazole / dimethylformamide / Ambient temperature View Scheme

Multi-step reaction with 5 steps 1: 100 percent / H2 / 20percent Pd(OH)2/C / ethanol / 2 h / 760 Torr / Ambient temperature2: CaCO3 / benzene / 4 h / 80 °C3: 94 percent / Zn-dust / tetrahydrofuran / 0.03 h / Heating4: 89 percent / methanol / 4 h / Ambient temperature; ion-exchange-resin5: imidazole / dimethylformamide / Ambient temperature  

Multi-step reaction with 4 steps 1: 100 percent / H2 / 20percent Pd(OH)2/C / ethanol / 2 h / 760 Torr / Ambient temperature2: CaCO3 / benzene / 4 h / 80 °C3: 97 percent / Zn-dust / tetrahydrofuran / 0.03 h / Heating4: imidazole / dimethylformamide / Ambient temperature  

Multi-step reaction with 2 steps 1: 100 percent / H2 / 20percent Pd(OH)2/C / ethanol / 2 h / 760 Torr / Ambient temperature2: CaCO3 / benzene / 4 h / 80 °C  

Multi-step reaction with 2 steps 1: 100 percent / H2 / 20percent Pd(OH)2/C / ethanol / 2 h / 760 Torr / Ambient temperature2: CaCO3 / benzene / 4 h / 80 °C