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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 7601Generated: October 25, 2026

Triethylamine → 2-Chloro-n-(5-methyl-1h-pyrazol-3-yl)quinazolin-4-amine

https://huagongshe.com/reaction/7601

Reaction equation

Participants

RoleNameHCIDCharge
ReactantTriethylamineHCID 8471—
Reactant1H-Pyrazol-3-amine, 5-methyl-HCID 93146—
Reactant2,4-DichloroquinazolineHCID 252886—
SolventEthanolHCID 702—
Product2-Chloro-n-(5-methyl-1h-pyrazol-3-yl)quinazolin-4-amineHCID 21939163—

Reaction Steps

To a solution of 2,4-dichloroquinazoline (12.69 g, 63 mmol) and 3-amino-5-methylpyrazole (6.18 g, 63 mmol) in ethanol (220 mL) is added triethylamine (8.13 mL, 63 mmol) and the reaction mixture is stirred for 3 hours at room temperature. The pale yellow precipitate is then collected by filtration, washed with cold ethanol and dried under vacuum to give (2-chloroquinazolin-4-yl)-(5-methyl-2H-pyrazol-3-yl)-amine.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07087603B2
Source datasetuspto-grants-2006_08
ORD IDord-40d7272e26be49c1ab66795f224e7323
Source noteuspto-grants-2006_08