反应条件
1: 95 percent / conc. H2SO4 / 3 h / 100 °C
2: 74 percent / SnCl2*2H2O, 12 N HCl / 1) 0 deg C, 2 h, 2) 20 deg C, 2 h
3: NaOEt / ethanol / 3 h / Heating
4: 85 percent / POCl3, Et4NCl, diethylaniline / acetonitrile / 0.25 h / 100 °C
5: 85 percent / methanol / 1) 4 h, 20 deg C, 2) 10 min, reflux
View Scheme
参考文献
Bakthavachalam, Venkatesalu; d'Alarcao, Marc; Leonard, Nelson J.
Journal of Organic Chemistry, 1984 , vol. 49, # 2 p. 289 - 295
