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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 473135Generated: October 31, 2026

Acetic Acid → HCID 178505731, compound

https://huagongshe.com/reaction/473135

Reaction equation

Participants

RoleNameHCIDCharge
ReactantAcetic AcidHCID 176—
ReactantDiisopropylethylamineHCID 81531—
Reactant4-Chloro-2-(difluoro(5-fluoropyridin-2-yl)methyl)quinazolineHCID 86662693—
ReactantHCID 178418806HCID 178418806—
SolventDimethylformamideHCID 6228—
ProductHCID 178505731HCID 17850573113.2%

Reaction Steps

To 4-chloro-2-(difluoro(5-fluoropyridin-2-yl)methyl)quinazoline (100 mg, 0.32 mmol) was added a solution of KI (20 mg, 0.12 mmol), DIEA (0.068 mL, 0.39 mmol), and 1H-pyrazol-3-amine (40 mg, 0.48 mmol) in DMF (2 mL). The mixture was stirred overnight at rt. AcOH (0.14 mL) was added and the mixture was purified by preparative HPLC (Varian diphenyl reverse phase column, eluted with gradient of solvent B=0.05% AcOH/ACN and solvent A=0.05% AcOH/H2O) to afford 2-(difluoro(5-fluoropyridin-2-yl)methyl)-N-(1H-pyrazol-3-yl)quinazolin-4-amine (15 mg, 13%). 1H NMR (300 MHz, DMSO-d6) δ 12.52 (br s, 1H), 10.82 (br s, 1H), 8.53-8.86 (m, 2H), 7.77-8.13 (m, 4H), 7.57-7.74 (m, 2H), 6.50 (br s, 1H); LC-MS (ESI) m/z 357 (M+H)+.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08633207B2
Source datasetuspto-grants-2014_01
ORD IDord-456b8bb669e2401f97e2a27e49b60583
Source noteuspto-grants-2014_01