反应条件
1: 98 percent / p-TsOH*H2O / toluene / 4.5 h / Heating 2: 90 percent / Na2S*9H2O / ethanol; H2O / 0.5 h / Heating 3: 89 percent / 2N aq. H2SO4 / tetrahydrofuran / 1 h 4: 85 percent / conc. HCl, glacial AcOH / 4 h / Heating 5: 74 percent / SnCl2, conc. HCl / 1.5 h / Ambient temperature 6: 60 percent / NaNO2, H2SO4 / H2O / 1 h / Heating View Scheme
参考文献
Journal of Medicinal Chemistry, , vol. 36, # 18 p. 2689 - 2700
