反应条件
1: 1.) n-butyllithium, tetramethylethylenediamine, 2.) CuI / 1.) THF-hexane, room temperature, 2 h; 2.) -78 -> -40 deg C, 90 min, 3.) room temperature, 16 h 2: 1.) n-butyllithium, tetramethylethylenediamine / 1.) hexane, room temperature, 3 h, 2.) -78 deg C -> room temperature (16 h) 3: 92 percent / 4N hydrochloric acid / propan-2-ol; diethyl ether / 16 h / Ambient temperature View Scheme
参考文献
Bradbury, Barton J.; Sindelar, Robert D.
Journal of Heterocyclic Chemistry, 1989 , vol. 26, p. 1827 - 1833
