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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2203852Generated: October 31, 2026

Water → HCID 60205455, compound

https://huagongshe.com/reaction/2203852

Reaction equation

Participants

RoleNameHCIDCharge
ReactantWaterHCID 962—
ReactantLithium HydroxideHCID 3939—
Reactant2-Ethylbutyryl chlorideHCID 75954—
Reactant5-bromo-4-fluoro-1H-pyrrolo[2,3-b]pyridin-3-amineHCID 60205276—
SolventPyridineHCID 1049—
ProductHCID 60205455HCID 6020545582.4%

Reaction Steps

A solution of 5-bromo-4-fluoro-1H-pyrrolo[2,3-b]pyridin-3-amine (200 mg, 0.869 mmol, Example 1, Step H) in pyridine at 0° C. was treated dropwise with 2-ethylbutanoyl chloride (176 mg, 1.30 mmol). After 7 hours, 2M LiOH (5 mL) was added to the mixture and stirring was continued at room temperature for 30 minutes. Water (25 mL) was then added, and the solid formed was filtered, washed with water (3×5 mL) and dried to provide N-(5-bromo-4-fluoro-1H-pyrrolo[2,3-b]pyridin-3-yl)-2-ethylbutanamide (235 mg, 82% yield) as a solid. 1H NMR (400 MHz, (CD3)2SO) δ 12.06 (s, 1H), 9.46 (s, 1H), 8.34 (d, 1H), 7.53 (s, 1H), 2.30-2.24 (m, 1H), 1.62-1.52 (m, 2H), 1.47-1.41 (m, 2H), 0.90 (t, 6H); LCMS (APCI+) m/z 328, 330 (M+H)+, Retention time=3.20 minutes (Method 2).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09365568B2
Source datasetuspto-grants-2016_06
ORD IDord-bb00e6ddc3d143d994548ba4c19fb3db
Source noteuspto-grants-2016_06