反应条件
1: 1) N,N,N',N'-tetramethylethylenediamine, t-BuLi / THF, pentane 1) -78 deg C, 40 min 2) -78 deg C, 3 h 2: 94 percent / CF3COOH / CH2Cl2 / 2 h / Ambient temperature View Scheme
参考文献
Coppola
Journal of Heterocyclic Chemistry, 1991 , vol. 28, # 7 p. 1769 - 1772
