反应条件
1: 95 percent / 0 °C
2: triethylamine, ethyl chloroformate / CHCl3 / 3.5 h / Ambient temperature
3: 1.) sodium hydride / 1.) THF, RT, 1 h, 2.) THF, RT, 1 h
4: 67 percent / dimethylformamide / 2 h / Ambient temperature
5: diphenyl ether / 0.2 h / 250 °C
6: 90 percent / trifluoromethanesulfonic acid, trifluoroacetic acid, anisole / 2 h / Ambient temperature
7: 1.) sodium / 1.) ethanol, 0 deg C, 1,5 h, 2.) ethanol, RT, 3,5 h
8: 89 percent / conc. sulfuric acid / 1 h / 0 °C
9: sodium hydroxide, water / ethanol / 2 h / Heating
10: 73 percent / pyridine / 2 h / 100 °C
View Scheme
参考文献
Segawa; Kitano; Kazuno; Tsuda; Shirahase; Ozaki; Matsuda; Kise
Journal of Heterocyclic Chemistry, 1992 , vol. 29, # 5 p. 1117 - 1123
