1: 93 percent / NH2OH*HCl; AcONa / ethanol / 0.5 h / 80 °C 2: 95 percent / 1,2-dichloro-benzene / 0.33 h / 180 °C 3: 90 percent / Ac2O / 3 h / 100 °C 4: 99 percent / pyridine; CH2Cl2 / 0.17 h / 20 °C 5: 72 percent / Et4NCl / PdCl2(PPh3)2 / dimethylformamide / 0.67 h / 80 °C 6: 93 percent / CF3SO3H; CH(OMe)3 / methanol; nitromethane / 1 h / 100 °C 7: 98 percent / pyridine / 2 h / 20 °C 8: 68 percent / AD-mix-β / 2-methyl-propan-2-ol; H2O / 24 h / 0 °C 9: 93 percent / 1 M K2CO3 / methanol / 1 h / 20 °C View Scheme