反应条件
1: 88 percent / conc. H2SO4, 90percent HNO3 / 0.5 h / 0 - 10 °C 2: 68 percent / SnCl2*2H2O, conc. HCl / 1.17 h / 24 - 25 °C 3: 1.) nitrosylsulfuric acid, 2.) sodium azide; / 1.) acetic anhydride, acetic acid, 20-35 deg C, 30 min, 2.) 25 deg C, 15 min; 4: 80 percent / Cu powder / various solvent(s) / 0.83 h / 180 °C 5: 15 percent / H2O / 1 h / 100 °C View Scheme
参考文献
Journal of Heterocyclic Chemistry, , vol. 21, # 4 p. 1183 - 1188
