反应详情

温度

0 °C

A dry round bottom flask containing 14.3 (0.0937 g, 0.287 mmol) in dry DMF (1 mL) was cooled in an ice bath. After 10 minutes, sodium hydride (60% wt. in oil) (15.4 mg, 0.385 mmol) was added carefully, and the mixture was stirred at 0° C. After 10 minutes, 4-bromo-2-fluoropyridine (commercially available from Synthonix Corporation) (0.0511 g, 0.290 mmol) was added. The reaction was allowed to stir overnight at room temperature. After 18 hours, the reaction was diluted with water and extracted five times with EtOAc. The combined organic layers were then washed one time with brine and dried over anhydrous magnesium sulfate. The solid was filtered off, and the solvent was concentrated. The residue was purified by silica gel flash chromatography (0-45% EtOAc/hexane) to afford 95.A (105.9 mg, 76% yield). 1H NMR (400 MHz) (CDCl3) δ ppm 8.02 (1H, d, J=4.7 Hz), 7.41 (1H, m), 7.35 (2H, m), 7.08 (2H, m), 7.00 (1H, m), 6.79 (2H, dt, J=5.1, 2.5 Hz), 5.52 (1H, s), 5.42 (2H, s), 3.76 (3H, s), 2.25 (2H, td, J=6.9, 2.5 Hz), 1.67 (2H, t, J=7.0 Hz), 0.87 (6H, s).

1. temperaturewas cooled in an ice bath
2. waitAfter 10 minutes
3. stirringto stir overnight at room temperature
4. waitAfter 18 hours
5. extractionextracted five times with EtOAc
6. washThe combined organic layers were then washed one time with brine
7. dry with materialdried over anhydrous magnesium sulfate
8. filtrationThe solid was filtered off
9. concentrationthe solvent was concentrated
10. customThe residue was purified by silica gel flash chromatography (0-45% EtOAc/hexane)