反应详情

Lithium hydroxide hydrate (0.402 g, 9.58 mmol) was added to a solution of (S)—N—((S)-1-(5-bromo-2-(methoxymethoxy)phenyl)-1-(3-chloro-2-fluoro-6-morpholinopyridin-4-yl)-2-hydroxyethyl)-2-methylpropane-2-sulfinamide (1.9 g, 3.19 mmol) in THF (25 mL) at RT, followed by bromoacetonitrile (0.445 mL, 6.39 mmol). The reaction mixture was allowed to stir at RT for 12 h. The reaction mixture was treated with aqueous saturated ammonium chloride, and the mixture was extracted with EtOAc. The organic phase was washed with water, brine, dried over MgSO4 and then concentrated under reduced pressure. The remaining residue was purified by silica gel chromatography (50-100% EtOAc/hexanes) to afford 1.51 g of (S)—N—((S)-1-(5-bromo-2-(methoxymethoxy)phenyl)-1-(3-chloro-2-fluoro-6-morpholinopyridin-4-yl)-2-(cyanomethoxy)ethyl)-2-methylpropane-2-sulfinamide.

1. extractionthe mixture was extracted with EtOAc
2. washThe organic phase was washed with water, brine
3. dry with materialdried over MgSO4
4. concentrationconcentrated under reduced pressure
5. customThe remaining residue was purified by silica gel chromatography (50-100% EtOAc/hexanes)