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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 279592Generated: October 26, 2026

Formamide → 7-Fluoroquinazolin-4(3H)-one

https://huagongshe.com/reaction/279592

Reaction equation

Participants

RoleNameHCIDCharge
ReactantFormamideHCID 713—
Reactant4-Fluoroanthranilic acidHCID 2724967—
ReactantDichloromethane methanolHCID 21226129—
Product7-Fluoroquinazolin-4(3H)-oneHCID 13539849682%

Reaction Steps

A solution of 2-amino-4-fluorobenzoic acid (3 g, 19.3 mmol) in formamide (30 ml) was heated at 150° C. for 6 hours. The reaction mixture was poured onto ice/water 1/1 (250 ml). The precipitated solid was collected by filtration, washed with water and dried to give 7-fluoro-3,4-dihydroquinazolin-4-one (2.6 g, 82%).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06362336B1
Source datasetuspto-grants-2002_03
ORD IDord-e76a6d410ada441f9c6dab92f41e4816
Source noteuspto-grants-2002_03