反应详情

(S)-2-Methoxypropanoic acid (181 mg, 1.74 mmol), bis(2-oxooxazolidin-3-yl)phosphinic chloride (443 mg, 1.74 mmol) and triethylamine (440 mg, 4.35 mmol) were added to 5-bromo-4-fluoro-1H-pyrrolo[2,3-b]pyridin-3-amine (200 mg, 0.87 mmol, Example 1, Step H) in DCM (50 mL). The reaction was stirred at room temperature for 1 hour, and then 3M aqueous LiOH (4 mL) was added. The reaction was stirred for 1 hour, and then saturated aqueous Na2CO3 was added (200 mL). The aqueous phase was extracted 3 times with DCM (200 mL), and then the combined organic phases were dried over MgSO4 and concentrated to dryness. The residue was purified by C-18 reverse phase flash chromatography (Biotage SP4 unit, C-18 25M column, 20-100% CH3CN/water gradient; 20 CV) to yield (S)—N-(5-bromo-4-fluoro-1H-pyrrolo[2,3-b]pyridin-3-yl)-2-methoxypropanamide (131 mg, 48% yield) as a solid.

1. stirringThe reaction was stirred for 1 hour
2. extractionThe aqueous phase was extracted 3 times with DCM (200 mL)
3. dry with materialthe combined organic phases were dried over MgSO4
4. concentrationconcentrated to dryness
5. customThe residue was purified by C-18 reverse phase flash chromatography (Biotage SP4 unit