Multi-step reaction with 11 steps
1.1: lithium hydroxide monohydrate / tetrahydrofuran; methanol; water / 15 h / 20 °C / Inert atmosphere
1.2: 0 °C
2.1: 1H-imidazole; dmap / N,N-dimethyl-formamide / 15 h / 20 °C / Inert atmosphere
3.1: dimethylsulfide borane complex / tetrahydrofuran / 0 - 75 °C / Inert atmosphere
4.1: sodium hydride / N,N-dimethyl-formamide; mineral oil / 0.25 h / 0 °C / Inert atmosphere
4.2: 0 - 20 °C / Inert atmosphere
5.1: n-butyllithium / tetrahydrofuran; hexane / -78 °C / Inert atmosphere
5.2: -78 °C / Inert atmosphere
5.3: -50 - -10 °C / Inert atmosphere
6.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 20 °C / Inert atmosphere
7.1: pyridine; phosphorus tribromide / diethyl ether / 0 - 20 °C / Inert atmosphere; Reflux
7.2: 1 h / 85 °C / Inert atmosphere
8.1: sodium hydroxide / ethanol; water / 15 h / 100 °C / Inert atmosphere
8.2: 0 °C
9.1: 4-methyl-morpholine; benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride / N,N-dimethyl-formamide / 15 h / 20 °C / Inert atmosphere
10.1: Lawessons reagent / tetrahydrofuran / Inert atmosphere; Reflux
11.1: boron trichloride / dichloromethane / 0.17 h / 0 °C / Inert atmosphere
With
Lawessons reagent; 4-methyl-morpholine; pyridine; 1H-imidazole; dmap; n-butyllithium; lithium hydroxide monohydrate; dimethylsulfide borane complex; tetrabutyl ammonium fluoride; boron trichloride; phosphorus tribromide; sodium hydride; benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; sodium hydroxide;
In
tetrahydrofuran; methanol; diethyl ether; ethanol; hexane; dichloromethane; water; N,N-dimethyl-formamide; mineral oil;
DOI:10.1016/j.ejmech.2011.03.052