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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2046512Generated: October 30, 2026

Propionic anhydride → 2-Amino-4-ethyl-7-(4-fluoro-phenyl)-7,8-dihydro-6H-quinazolin-5-one

https://huagongshe.com/reaction/2046512

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPropionic anhydrideHCID 31263—
Reactant5-(4-Fluorophenyl)cyclohexane-1,3-dioneHCID 730136—
Reactant2-Amino-7-(4-fluoro-phenyl)-4-methyl-7,8-dihydro-6H-quinazolin-5-oneHCID 17221208—
Product2-Amino-4-ethyl-7-(4-fluoro-phenyl)-7,8-dihydro-6H-quinazolin-5-oneHCID 17221209—

Reaction Steps

The title compound was prepared from 5-(4-fluoro-phenyl)-cyclohexane-1,3-dione, following the procedure describing the synthesis of 2-amino-7-(4-fluoro-phenyl)-4-methyl-7,8-dihydro-6H-quinazolin-5-one (example 3/a stage 1, 2 and 3). Propionic anhydride was used instead of acetic anhydride in stage 1.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08592430B2
Source datasetuspto-grants-2013_11
ORD IDord-b750d009c5a744e49a290c35258b8a40
Source noteuspto-grants-2013_11