Triethylamine → N-(5-bromo-4-fluoro-1H-pyrrolo[2,3-b]pyridin-3-yl)-2,2-difluorocyclopropanecarboxamide

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Reaction Steps

A mixture of 5-bromo-4-fluoro-1H-pyrrolo[2,3-b]pyridin-3-amine (200 mg, 0.869 mmol; Example 1, Step H), 2,2-difluorocyclopropanecarboxylic acid (212 mg, 1.74 mmol), and triethylamine (606 μL, 4.35 mmol) in CH2Cl2 (5 mL) at room temperature was treated with BOP-Cl (162 mg, 1.74 mmol). The mixture was stirred at room temperature for 18 hours. 2M LiOH.H2O (3 mL) was then added to the mixture and stirred for 30 minutes. Water (10 mL) was added, and the formed solid was filtered, washed with additional water (3×5 mL), and dried to provide N-(5-bromo-4-fluoro-1H-pyrrolo[2,3-b]pyridin-3-yl)-2,2-difluoro cyclo-propanecarboxamide (158 mg, 54% yield) as a solid. LCMS (APCI+) m/z 334, 336 (M+H)+.

Provenance & Evidence