Multi-step reaction with 12 steps
1.1: sulfuric acid / 1 h / Reflux; Inert atmosphere
2.1: diisobutylaluminium hydride / tetrahydrofuran / 1 h / -78 °C / Inert atmosphere
3.1: oxalyl dichloride; dimethyl sulfoxide / dichloromethane / 0.5 h / -78 °C / Inert atmosphere
3.2: 0.33 h / 20 °C / Inert atmosphere
4.1: toluene / 0.33 h / Inert atmosphere; Reflux
5.1: hydrogen; palladium on activated charcoal / ethanol / 14 h / 20 °C / Inert atmosphere
6.1: hydrogen bromide / acetic acid / 44 h / Inert atmosphere; Reflux
7.1: 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; dmap / N,N-dimethyl-formamide / 11 h / 0 - 20 °C / Inert atmosphere
8.1: sodium hydride / tetrahydrofuran; N,N-dimethyl-formamide / 1 h / 0 - 20 °C / Inert atmosphere
9.1: Lawessons reagent / tetrahydrofuran / 0.25 h / Inert atmosphere; Reflux
10.1: potassium carbonate / acetone / 7.5 h / 20 °C / Inert atmosphere
11.1: dichloromethane / 48 h / 20 °C / Inert atmosphere; Molecular sieve
12.1: tris(dimethylamino)sulfonium trimethylsilyldifluoride / N,N-dimethyl-formamide / 5 h / 0 °C / Inert atmosphere
With
Lawessons reagent; dmap; oxalyl dichloride; sulfuric acid; palladium on activated charcoal; tris(dimethylamino)sulfonium trimethylsilyldifluoride; hydrogen bromide; hydrogen; sodium hydride; diisobutylaluminium hydride; potassium carbonate; dimethyl sulfoxide; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride;
In
tetrahydrofuran; ethanol; dichloromethane; acetic acid; N,N-dimethyl-formamide; acetone; toluene;
4.1: |Wittig Olefination;
DOI:10.1016/j.bmc.2014.03.012