反应详情

温度

0 °C

N-Bromosuccinimide (40 mg, 0.2 mmol) was added to a mixture of N-[(2-oxo-4-pyridin-2-yl-1,2,4,5-tetrahydroimidazo[1,5,4-de][1,4]benzoxazin-4-yl)methyl]acetamide in acetonitrile (5 mL) and acetic acid (3 mL), and cooled to 0° C. The reaction was stirred for 1 h, concentrated to remove residual acetic acid, and partitioned between ethyl acetate and saturated aqueous sodium bicarbonate. The organic layer was washed with brine, dried over magnesium sulfate, filtered, and concentrated to give crude N-[(7-bromo-2-oxo-4-pyridin-2-yl-1,2,4,5-tetrahydroimidazo[1,5,4-de][1,4]benzoxazin-4-yl)methyl]acetamide (0.040 g. 60%). LCMS calculated for C17H16BrN4O3 (M+H)+: m/z=403.1, 405.1. found: 402.9, 405.0.

1. concentrationconcentrated
2. customto remove residual acetic acid
3. custompartitioned between ethyl acetate and saturated aqueous sodium bicarbonate
4. washThe organic layer was washed with brine
5. dry with materialdried over magnesium sulfate
6. filtrationfiltered
7. concentrationconcentrated