反应详情

温度

100 °C

Phenol (62.60 mg, 59.06 μL, 0.6652 mmol) was added slowly to a suspension of sodium hydride (60% dispersion in mineral oil) (15.96 mg, 17.73 μL, 0.6652 mmol) in anhydrous DMF (1.3 mL) at 0° C. The reaction mixture was stirred until the evolution of H2 ceased. 3-Amino-6-bromo-N-phenyl-pyrazine-2-carboxamide (130 mg, 0.4435 mmol) was added followed by Cu2O (15.87 mg, 0.1109 mmol) and reaction mixture heated to 100° C. overnight. The reaction mixture was cooled to ambient temperature and quenched with crushed ice. The aqueous layer was extracted with EtOAc (×3) and the combined organic extracts washed with ammonium hydroxide (×1), dried (MgSO4), filtered and concentrated in vacuo. The residue was purified by reverse phase preparative HPLC [Waters Sunfire C18, 10 mM, 100 Å column, gradient 10%-95% B (solvent A: 0.05% TFA in water; solvent B: CH3CN) over 16 minutes at 25 mL/min]. The fractions were collected, passed through a sodium bicarbonate cartridge and freeze-dried to give the title compound as a yellow solid (16 mg, 12% Yield). 1H NMR (400.0 MHz, DMSO) δ 7.15-7.17 (m, 4H), 7.34-7.47 (m, 6H), 7.66-7.68 (m, 2H), 8.24 (s, 1H) and 9.92 (s, 1H) ppm; MS (ES+) 306.99.

1. temperatureThe reaction mixture was cooled to ambient temperature
2. customquenched with crushed ice
3. extractionThe aqueous layer was extracted with EtOAc (×3)
4. washthe combined organic extracts washed with ammonium hydroxide (×1)
5. dry with materialdried (MgSO4)
6. filtrationfiltered
7. concentrationconcentrated in vacuo
8. customThe residue was purified by reverse phase preparative HPLC [Waters Sunfire C18, 10 mM, 100 Å column, gradient 10%-95% B (solvent A: 0.05% TFA in water; solvent B: CH3CN) over 16 minutes at 25 mL/min]
9. customThe fractions were collected
10. customfreeze-dried