反应条件
1: 100 percent / ZnCl2 / CH2Cl2 / 1 h / Heating 2: 1.) hexamethylenetetramine, 2.) aq. AcOH / 1.) ethanol, reflux, 90 min, 2.) ethanol, reflux 3: 87 percent / AcOH, n-BuNH2 / methanol / 18 h / 22 °C 4: 64 percent / AcCl, FeCl3 / CH2Cl2 / 1 h / 0 - 5 °C 5: hydrazine hydrate, 10percent Pd-C / methanol; H2O / 0.5 h / Heating 6: aq. NaOH / methanol / 0.5 h / Heating 7: 87 percent / pyridine / CH2Cl2 / 4 h / 5 - 10 °C View Scheme
参考文献
Journal of Heterocyclic Chemistry, , vol. 32, # 3 p. 875 - 882
