1: 76 percent / pyridine / Ambient temperature 2: 73 percent / H2 / 5percent Pd/C / ethyl acetate; ethanol / 3102.9 Torr 3: 86 percent / pyridine 4: 56 percent / NaN3 / dimethylsulfoxide / 80 deg C, 1 h; 60 deg C, overnight 5: 81 percent / H2 / 5percent Pd/C / toluene / 24 h 6: 101 percent / pyridine / Ambient temperature 7: 100 percent / NaOMe / methanol View Scheme