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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2046455Generated: October 31, 2026

Guanidine Hydrochloride → 2-amino-7-(4-fluorophenyl)-7,8-dihydroquinazolin-5(6H)-one

https://huagongshe.com/reaction/2046455

Reaction equation

Participants

RoleNameHCIDCharge
ReactantGuanidine HydrochlorideHCID 5742—
ReactantSodium CarbonateHCID 10340—
Reactant2-amino-7-(4-chlorophenyl)-7,8-dihydroquinazolin-5(6H)-oneHCID 2772371—
Reactant2-[(Dimethylamino)methylene]-5-(4-fluorophenyl)-1,3-cyclohexanedioneHCID 28742129—
Product2-amino-7-(4-fluorophenyl)-7,8-dihydroquinazolin-5(6H)-oneHCID 4583122—

Reaction Steps

The title compound was prepared from 2-dimethylaminomethylene-5-(4-fluoro-phenyl)-cyclohexane-1,3-dione (600 mg, 2.29 mmol) prepared in stage 1, guanidine hydrochloride (438 mg, 4.59 mmol) and sodium carbonate (728 mg, 6.87 mmol), following the procedure described for 2-amino-7-(4-chloro-phenyl)-7,8-dihydro-6H-quinazolin-5-one (example 2/a stage 2).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08592430B2
Source datasetuspto-grants-2013_11
ORD IDord-85ece1ca3c8b40778bdb669872249567
Source noteuspto-grants-2013_11