Multi-step reaction with 11 steps
1.1: oxalyl dichloride; N,N-dimethyl-formamide / dichloromethane / 0.5 h / 0 °C
2.1: triethylamine / dichloromethane / 1 h / 0 °C
3.1: diisobutylaluminium hydride / tetrahydrofuran; toluene / 0.33 h / -40 - 20 °C
4.1: diethylamino-sulfur trifluoride / dichloromethane / 1.5 h / 0 °C
5.1: bis-triphenylphosphine-palladium(II) chloride / 1,4-dioxane / 1.25 h / 110 °C / Inert atmosphere
6.1: ozone; oxygen / dichloromethane / -78 °C
6.2: 20 h / 20 °C / Inert atmosphere
7.1: titanium(IV) isopropylate / tetrahydrofuran / 20 h / 0 - 20 °C
8.1: dichloromethane; tetrahydrofuran / 5 h / -60 - 20 °C
9.1: lithium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -60 °C / Inert atmosphere
9.2: 3 h / -60 - 20 °C
10.1: hydrogenchloride / methanol / 0.25 h / Inert atmosphere
11.1: triethylamine; dmap / ethyl acetate / 1.5 h / 0 °C
11.2: 48 h / 50 °C
With
titanium(IV) isopropylate; hydrogenchloride; dmap; bis-triphenylphosphine-palladium(II) chloride; oxalyl dichloride; diethylamino-sulfur trifluoride; oxygen; diisobutylaluminium hydride; ozone; triethylamine; N,N-dimethyl-formamide; lithium hexamethyldisilazane;
In
tetrahydrofuran; 1,4-dioxane; methanol; dichloromethane; ethyl acetate; toluene;