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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2244084Generated: November 1, 2026

Thionyl Chloride → 4-Chloro-7-fluoroquinazoline

https://huagongshe.com/reaction/2244084

Reaction equation

Participants

RoleNameHCIDCharge
ReactantThionyl ChlorideHCID 24386—
Reactant7-Fluoroquinazolin-4(3H)-oneHCID 135398496—
Product4-Chloro-7-fluoroquinazolineHCID 16227013—

Reaction Steps

7-Fluoro-3H-quinazolin-4-one (8.2 g, 50 mmol) is heated at reflux in thionyl chloride (80 mL). Concentration affords the expected 4-Chloro-7-fluoro-quinazoline (9.1 g, ˜quant).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07678803B2
Source datasetuspto-grants-2010_03
ORD IDord-fadf7e4e1bc84828bb24083218bb893b
Source noteuspto-grants-2010_03