Multi-step reaction with 10 steps
1.1: 1,8-diazabicyclo[5.4.0]undec-7-ene; lithium chloride / dimethyl sulfoxide / 1 h / 0 - 20 °C / Inert atmosphere
2.1: palladium 10% on activated carbon; hydrogen / ethyl acetate / 8 h
3.1: 1H-imidazole / dichloromethane / 0 - 20 °C / Inert atmosphere
4.1: diisobutylaluminium hydride / dichloromethane; toluene / 1 h / 0 - 20 °C / Inert atmosphere
5.1: L-proline / dimethyl sulfoxide / 1 h / 25 °C / Inert atmosphere
6.1: sodium tetrahydroborate / methanol; dimethyl sulfoxide / 0.17 h / 0 °C / Inert atmosphere
7.1: palladium 10% on activated carbon; hydrogen / ethyl acetate / 12 h / 760.05 Torr
8.1: di(n-butyl)tin oxide; triethylamine; p-toluenesulfonyl chloride / dichloromethane / 20 °C / Inert atmosphere
8.2: 1 h / 0 - 20 °C / Inert atmosphere
9.1: copper(l) iodide / tetrahydrofuran / 12 h / -20 °C / Inert atmosphere
9.2: Saturated solution; Inert atmosphere
10.1: N-ethyl-N,N-diisopropylamine / dichloromethane / 4 h / -78 - 20 °C / Inert atmosphere
With
1H-imidazole; sodium tetrahydroborate; copper(l) iodide; palladium 10% on activated carbon; hydrogen; diisobutylaluminium hydride; di(n-butyl)tin oxide; 1,8-diazabicyclo[5.4.0]undec-7-ene; triethylamine; N-ethyl-N,N-diisopropylamine; p-toluenesulfonyl chloride; L-proline; lithium chloride;
In
tetrahydrofuran; methanol; dichloromethane; dimethyl sulfoxide; ethyl acetate; toluene;
1.1: Horner-Wadsworth-Emmons olefination;
DOI:10.1016/j.tetasy.2011.09.017