1: 73 percent / 1) 2 N NaOH, 2) FeCl3*6H2O/HCl / 1) MeOH, reflux, 2) H2O 2: Na2S2O4 / diethyl ether; CHCl3; H2O 3: 81 percent / 1) HCl, 2) H2O / 1) 15 min 4: 80 mg / Pb2O / CHCl3 / 0.08 h 5: 94 percent / HNO3 (65 percent) / 0.03 h View Scheme

1: 73 percent / 1) 2 N NaOH, 2) FeCl3*6H2O/HCl / 1) MeOH, reflux, 2) H2O 2: 98 percent / Ag2O / CHCl3 / Heating 3: Na2S2O4 / diethyl ether; CHCl3; H2O 4: 83 percent / 1) HCl, 2) H2O / 1) 15 min 5: 1) Ag2O, (Et)3N (0.3 percent), 2) HNO3 (65 percent) / 1) CHCl3, 2) 2 min View Scheme

hydrogenchloride; sodium hydroxide 1) MeOH, reflux, 2) H2O;

1: 73 percent / 1) 2 N NaOH, 2) FeCl3*6H2O/HCl / 1) MeOH, reflux, 2) H2O 2: 94 percent / Ag2O / CHCl3 / Heating 3: Na2S2O4 / diethyl ether; CHCl3; H2O 4: 88 percent / K2CO3/KI / various solvent(s) / 20 h / 120 °C 5: 91 percent / NaOH (aq.) / dioxane / 1) room temperature, 10 min, 2) 50 deg C, 5 min 6: 83 percent / H2 / Pd/C (10 percent Pd) / methanol / Ambient temperature 7: 81 percent / 1) Ag2O, 2) HNO3 (65 percent) / CHCl3 / 1) room temperature, 2 h View Scheme

1: 73 percent / 1) 2 N NaOH, 2) FeCl3*6H2O/HCl / 1) MeOH, reflux, 2) H2O 2: 94 percent / Ag2O / CHCl3 / Heating View Scheme