反应条件
1: 72 percent / p-toluenesulfonic acid, 4-A sieves / CH2Cl2 / 48 h / Heating 2: 1.) n-butyllithium, TMEDA / 1.) ether, hexane, -20 deg C, 1 h, 2.) 1 h 3: 1.) LDA / 1.) hexane, THF, 15 min, 2.) -78 deg C, 3 h 4: 80 percent / CH3CO2H / 6 h / Heating View Scheme
参考文献
Journal of Organic Chemistry, , vol. 53, # 17 p. 3936 - 3943
