Multi-step reaction with 11 steps
1.1: 20 - 180 °C / Inert atmosphere
1.2: Cooling with ice
2.1: trichlorophosphate / 20 - 110 °C
3.1: diisobutylaluminium hydride / hexane; tetrahydrofuran / -30 °C / Inert atmosphere
4.1: CHIRALPAK IA / carbon dioxide; methanol / Resolution of racemate
5.1: 1H-imidazole / N,N-dimethyl-formamide / 2 h / 20 °C / Inert atmosphere
6.1: sodium hydride / tetrahydrofuran; mineral oil / 1 h / 0 °C / Inert atmosphere
6.2: 2 h / 60 °C / Inert atmosphere
7.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 2 h / 20 °C
8.1: dipyridinium dichromate / N,N-dimethyl-formamide / 15 h / 20 °C
9.1: N-ethyl-N,N-diisopropylamine; HATU / N,N-dimethyl-formamide / 2 h / 20 °C / Inert atmosphere
10.1: hydrogenchloride; water / dichloromethane / 0 - 20 °C / Inert atmosphere
11.1: methanol / 0.5 h / 20 °C
11.2: 2 h / 20 °C
With
1H-imidazole; hydrogenchloride; dipyridinium dichromate; tetrabutyl ammonium fluoride; water; sodium hydride; diisobutylaluminium hydride; N-ethyl-N,N-diisopropylamine; HATU; trichlorophosphate;
In
tetrahydrofuran; methanol; hexane; dichloromethane; carbon dioxide; N,N-dimethyl-formamide; mineral oil;