1: 91 percent / p-CH3CONHC6H4SO2N3; Et3N 2: 86 percent / Rh2(OAc)4 / benzene / 80 °C 3: 94 percent / Et3N / 25 °C 4: 86 percent / Et3N / Pd(PPh3)2Cl2 / acetonitrile / 25 °C 5: 100 percent / H2 / Pd/C / CHCl3 6: 96 percent / H2O2; CF3COOH / 25 °C 7: 98 percent / Otera's catalyst / toluene / 120 °C 8: 96 percent / H2 / Pd/C / methanol View Scheme