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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 397346Generated: October 26, 2026

Triethylamine hydrochloride → 4-Chloro-8-methoxy-2-(2-trifluoromethylphenyl)-quinazoline

https://huagongshe.com/reaction/397346

Reaction equation

Participants

RoleNameHCIDCharge
ReactantTriethylamine hydrochlorideHCID 11130—
ReactantPhosphorus oxychlorideHCID 24813—
Reactant8-methoxy-2-(2-trifluoromethyl-phenyl)-3H-quinazolin-4-oneHCID 135850831—
Product4-Chloro-8-methoxy-2-(2-trifluoromethylphenyl)-quinazolineHCID 2193923789%

Reaction Steps

Prepared from 8-methoxy-2-(2-trifluoromethyl-phenyl)-3H-quinazolin-4-one (1.0 g, 3.12 mmol), triethylamine hydrochloride (472 mg, 3.43 mmol), and POCl3. Purification by flash chromatography afforded a white solid (89% yield). HPLC-Method A, Rt 4.10 min, (98%), MS (m/z) 258.08 (M+H).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06610677B2
Source datasetuspto-grants-2003_08
ORD IDord-f556439ba80248e6873f52c8dfbc7e1b
Source noteuspto-grants-2003_08