反应条件
1: 85 percent / Et3N / CH2Cl2 / 24 h / Ambient temperature 2: 94 percent / n-BuLi / tetrahydrofuran / 1.) -25 deg C; 2.) -5 deg C to -10 deg C, 10 h 3: 70 percent / 1.) n-BuLi / tetrahydrofuran / 1.) - 25 deg C, 15 min; 2.) -78 deg C, 12 h 4: 1.) MeI, BaO; 2.) NaBH4; 3.) HCl / 1.) EtNO2, 130 deg C, 6 h; 2.) EtOH, 0 deg C to 5 deg C, 30 min; 3.) water, 0 deg C to 5 deg C, 30 min 5: 69 percent / PdCl2, CuCl, O2 / dimethylformamide; H2O / 24 h / 45 °C 6: 88 percent / KOH / H2O; dioxane / 18 h / 100 °C 7: 74 percent / Li/NH3 / tetrahydrofuran; 2-methyl-propan-2-ol / 0.5 h / -78 °C View Scheme
参考文献
Dalko, Peter I.; Brun, Virginie; Langlois, Yves
Tetrahedron Letters, 1998 , vol. 39, # 49 p. 8979 - 8982