Multi-step reaction with 11 steps
1.1: Et3N; DMAP / CH2Cl2 / 18 h / 20 °C
2.1: dimethylsulfoxide / 24 h / 20 °C
3.1: n-BuLi / tetrahydrofuran; hexane / 0.17 h / -25 °C
3.2: 81 percent / tetrahydrofuran; hexane; hexamethylphosphoric acid triamide / 14 h / -25 - 20 °C
4.1: 97 percent / Ni(OAc)2*2H2O; NaBH4 / aq. ethanol / 2 h / 20 °C
5.1: 92 percent / n-tetrabutylammonium fluoride / tetrahydrofuran / 2 h / 20 °C
6.1: 85 percent / pyridinium dichromate / dimethylformamide / 48 h / 20 °C
7.1: 553 mg / diethyl ether / 0.75 h / 0 °C
8.1: 96 percent / pyridinium p-toluenesulfonate; EtOH / 12 h / 55 °C
9.1: 94 percent / CBr4; PPh3 / CH2Cl2 / 0.67 h / 0 °C
10.1: aq. LiOH / tetrahydrofuran / 12 h / 20 °C
11.1: 118 mg / DCC / dimethylformamide / 12 h / 20 °C
With
dmap; lithium hydroxide; sodium tetrahydroborate; dipyridinium dichromate; n-butyllithium; ethanol; carbon tetrabromide; tetrabutyl ammonium fluoride; nickel diacetate; pyridinium p-toluenesulfonate; triethylamine; dicyclohexyl-carbodiimide; triphenylphosphine;
In
tetrahydrofuran; diethyl ether; ethanol; hexane; dichloromethane; dimethyl sulfoxide; N,N-dimethyl-formamide;
DOI:10.1021/jm051226l