反应详情

A solution of (S)-ethyl 2-(5-bromo-2-(methoxymethoxy)phenyl)-2-(3-chloro-2-fluoro-6-morpholinopyridin-4-yl)-2-((S)-1,1-dimethylethylsulfinamido)acetate (3.56 g, 5.59 mmol) in THF (60 mL) was cooled to 0° C. and treated drop wise with DIBAL (1M in THF) (22.36 mL, 22.36 mmol) under nitrogen atmosphere. After 1 h additional 10 mL DIBAL solution were added at RT. After 12 h at RT additional 10 mL DIBAL solution were added. After 30 min aqueous saturated solution of potassium sodium tartrate was added, followed by EtOAc. The reaction mixture was allowed to stir vigorously for 1 h. The organic phase was separated, washed with aqueous saturated solution of potassium sodium tartrate and dried over MgSO4. The solvent was removed under reduced pressure and the crude material was purified by silica gel chromatography (20-100% EtOAc/hexane) to provide 1.90 g 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. customThe organic phase was separated
2. washwashed with aqueous saturated solution of potassium sodium tartrate
3. dry with materialdried over MgSO4
4. customThe solvent was removed under reduced pressure
5. customthe crude material was purified by silica gel chromatography (20-100% EtOAc/hexane)