Hydrogen Peroxide → HCID 86732146, compound

Participants

Reaction Steps

To a solution of N-((4S,6S)-4-(2-fluoro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)-4-(fluoromethyl)-6-(trifluoromethyl)-5,6-dihydro-4H-1,3-oxazin-2-yl)benzamide (4.16 g, 7.93 mmol) in THF (22.67 mL) at 0° C. was added hydrogen peroxide 30% in water (2.431 mL, 23.80 mmol). The reaction mixture was stirred at 0° C. to room temperature for 16 h. The reaction mixture was acidified to pH 5-7 by addition of saturated NaHCO3, and extracted with EtOAc (2×). The combined organics were washed with water and brine, dried and concentrated. The crude material was purified by chromatography through a Redi-Sep pre-packed silica gel column (40 g), eluting with a gradient of 0-30% EtOAc in hexane, to provide N-((4S,6S)-4-(2-fluoro-5-hydroxyphenyl)-4-(fluoromethyl)-6-(trifluoromethyl)-5,6-dihydro-4H-1,3-oxazin-2-yl)benzamide (1.84 g, 4.44 mmol, 56.0% yield) as white foam. MS m/z=415 [M]+. Calculated for C19H15F5N2O3: 414.33.

Provenance & Evidence