反应条件
1: 1.) n-BuLi / 1.) THF, hexane, -78 deg C, 1 h, 2.) THF, hexane, a) -78 deg C, 0.5 h, b) RT, 0.5 h
2: 1.) n-BuLi / 1.) THF, hexane, -78 deg C, 2 h, 2.) THF, hexane, RT
3: conc. hydrochloric acid / aq. ethanol / 0.5 h / Ambient temperature
4: 63 percent / p-toluenesulfonic acid / acetic acid / 24 h / Heating
View Scheme
参考文献
Katritzky, Alan R.; Lan, Xiangfu; Zhang, Zhongxing
Journal of Heterocyclic Chemistry, 1993 , vol. 30, # 2 p. 381 - 387
