反应条件
1: 1) n-BuLi, 2) KH / 1) THF, hexane, -78 deg C, 30 min, 2) a) to r.t., 1 h, b) -78 deg C to r.t., 140 min, c) 45-50 deg C, 17 h 2: 1) LDA / 1) THF, hexane, -78 deg C, 6 min, 2) THF, a) -78 deg C, 105 min, b) to r.t., 105 min 3: 100 percent / Ph3P, diethyl azodicarboxylate / tetrahydrofuran / 0.5 h / 0 °C 4: 94 percent / n-Bu4NF / tetrahydrofuran / 0.17 h View Scheme
参考文献
Campbell, Jeffrey A.; Hart, David J.
Journal of Organic Chemistry, 1993 , vol. 58, # 10 p. 2900 - 2903
