反应条件
1: 51 percent / aq. p-TsOH / benzene / 70 h / Ambient temperature
2: 1.) n-BuLi, diisopropylamine, HMPA / 1.) THF, hexane, -78 deg C, 10 min, 2.) THF, hexane, a) -78 deg C, b) -40 deg C
3: 95 percent / methanol
4: 90 percent / BF3*Et2O, H2O / methanol / 60 - 70 °C
View Scheme
参考文献
Kato, Keisuke; Suemune, Hiroshi; Sakai, Kiyoshi
Heterocycles, 1994 , vol. 37, # 1 p. 413 - 424
