反应条件
1: 60 percent / sodium hydride / tetrahydrofuran / 7 h / Ambient temperature 2: 1) t-butyllithium / 1) -70 degC, 1 h, 2) -70 degC, 4 to 5 h 3: 41 percent / p-toluenesulphonic acid / toluene / 6.5 h / Heating 4: 1) n-butyllithium / 1) hexane/THF, -70 degC, 15-30 min, 2a) -70 to -30 degC, 1 h, 2b) r.t., 30 min 5: 41 percent / bis(trifluoroacetoxy)iodobenzene / acetonitrile; H2O / 0.75 h / Ambient temperature 6: 65 percent / 25percent aq. sodium hydroxide / ethanol / 16 h / Heating View Scheme
参考文献
Castells; Troin; Diez; Rubiralta; Grierson; Husson
Tetrahedron, 1991 , vol. 47, # 37 p. 7911 - 7924
