Multi-step reaction with 12 steps
1: 91 percent / NaH / liquid ammonia; tetrahydrofuran / 0.5 h / Heating
2: 77 percent / n-BuLi / tetrahydrofuran / -78 - 20 °C
3: 80 percent / LiHMDS / tetrahydrofuran / 0.5 h / -78 - -50 °C
4: 74 percent / Pd(PPh3)4; Et3N; Ph3P / dimethylformamide / 1.5 h / 20 °C
5: 89 percent / MeLi; CuI / diethyl ether / -78 - -30 °C
6: 290 mg
7: LiOH*H2O; H2O / methanol / 1 h / 60 °C
8: 254 mg / 1,1'carbonyldiimidazole; Et3N / CH2Cl2 / 16 h / 20 °C
9: 97 percent / tetrahydrofuran / 0.5 h / 0 - 20 °C
10: 84 percent / OsO4; NaIO4 / dioxane; H2O / 1 h / 20 °C
11: 60 percent / DBU / benzene / 24 h / Heating
12: 78 percent / n-BuLi / tetrahydrofuran / -78 - -10 °C
With
lithium hydroxide; sodium periodate; copper(l) iodide; osmium(VIII) oxide; tetrakis(triphenylphosphine) palladium(0); n-butyllithium; water; methyllithium; sodium hydride; 1,8-diazabicyclo[5.4.0]undec-7-ene; triethylamine; triphenylphosphine; 1,1'-carbonyldiimidazole; lithium hexamethyldisilazane;
In
tetrahydrofuran; 1,4-dioxane; methanol; diethyl ether; dichloromethane; ammonia; water; N,N-dimethyl-formamide; benzene;
1: Birch reduction / 2: Substitution / 3: Substitution / 4: Substitution / 5: Addition / 7: Hydrolysis / 8: Substitution / 9: Substitution / 10: Oxidation / 11: Cyclization / 12: Addition;
DOI:10.1016/S0040-4020(99)00603-1