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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1801935Generated: October 31, 2026

Potassium Iodide → HCID 178470277, compound

https://huagongshe.com/reaction/1801935

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPotassium IodideHCID 4875—
ReactantDiisopropylethylamineHCID 81531—
ReactantEthyl 4-chloroquinazoline-2-carboxylateHCID 3477840—
ReactantHCID 178418806HCID 178418806—
SolventWaterHCID 962—
SolventDimethylformamideHCID 6228—
ProductHCID 178470277HCID 17847027770%

Reaction Conditions

Temperature50 °C

Reaction Steps

A stirred mixture of ethyl 4-chloroquinazoline-2-carboxylate (709 mg, 3 mmol), 3-aminopyrazole (274 mg, 3.3 mmol), potassium iodide (498 mg, 3 mmol), and DIEA (574 μL, 3.3 mmol) in N,N-dimethylformamide (5 mL) was heated at 50° C. for 2 h and then stirred at rt overnight. Water was added to the mixture and the precipitated solid was filtered, washed with water and dried under high vacuum at 50° C. for 3 h to afford ethyl 4-(1H-pyrazol-3-ylamino)quinazoline-2-carboxylate (595 mg, 70%). LC-MS (ESI) m/z 284 (M+H)+.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08349851B2
Source datasetuspto-grants-2013_01
ORD IDord-9c269e860c6a41c9a40561a683d8827a
Source noteuspto-grants-2013_01