反应条件
1: 100 percent / ammonium acetate / dimethylformamide / 3 h / 120 - 130 °C
2: 70 percent / conc. H2SO4 / Ambient temperature
3: 50 percent / conc. HCl, NaNO2 / H2O / 1) ice bath, 2 h, 2) RT, 2 h, 3) steam bath, 5 h
4: 62 percent / aq. NaOH / 7 h / Heating
View Scheme
参考文献
Singh, Baldev; Lesher, George Y.
Journal of Heterocyclic Chemistry, 1990 , vol. 27, # 7 p. 2085 - 2091
