反应条件
1: 90 percent / NaN3, conc. H2SO4 / 1 h / 60 °C
2: NaNO2, conc. aq. HCl / H2O / 0.33 h / 10 °C
3: I2, KI / aq. HCl / 1 h / 80 °C
4: 72 percent / various solvent(s) / 4 h / 140 °C
5: 78 percent / 80percent aq. H2O2, trifluoroacetic anhydride / 1) 0 deg C, 1 h; 2) 20 deg C, 30 min
6: 68 percent / CrO3 / acetic acid / 0.67 h / 70 °C
7: 81 percent / SnCl2*2H2O, conc. aq. HCl / ethanol / 2 h / 100 °C
8: 1) nitrosylsulfuric acid; 2) SnCl2*2H2O, conc. aq. HCl / 1) acetic acid, 20 deg C, 3 h; 2) 10 deg C, 1 h
9: 2) BF3 etherate / 1) 70 deg C, 4 h; 2) acetic acid, reflux, 3 h
View Scheme
参考文献
Pazenok, S. V.; Kondratenko, N. V.; Popov, V. I.; Troitskaya, V. I.; Il'chenko, A. Ya.; et al.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1983 , vol. 19, # 11 p. 1182 - 1187
Khimiya Geterotsiklicheskikh Soedinenii, 1983 , # 11 p. 1493 - 1499
