反应条件
1: 1.) n-BuLi / 1.) THF, Et2O, pentane, -78 deg C, 5 min, 2.) THF, Et2O, pentane, -78 deg, 5 min
2: 1.) t-BuLi / 1.) THF, Et2O, pentane, -78 deg C, 30 min, 2.) THF, Et2O, pentane, a) -15 deg C, 5 min, b) from -15 deg C to RT
3: silica-gel-aq. oxalic acid / CH2Cl2 / 0.25 h / Ambient temperature
View Scheme
参考文献
Meyers, A. I.; Spohn, Ronald F.
Journal of Organic Chemistry, 1985 , vol. 50, # 24 p. 4872 - 4877