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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1191305Generated: November 2, 2026

Urea → 4-(3-Cyanophenyl)-1H-benzo[h]quinazolin-2-one

https://huagongshe.com/reaction/1191305

Reaction equation

Participants

RoleNameHCIDCharge
ReactantUreaHCID 1176—
Reactant3-(1-Amino-2-naphthoyl)benzonitrileHCID 86690447—
SolventAcetic AcidHCID 176—
Product4-(3-Cyanophenyl)-1H-benzo[h]quinazolin-2-oneHCID 5665067460%

Reaction Steps

To a solution of 3-(1-amino-2-naphthoyl)benzonitrile (200 mg, 0.734 mmol) in acetic acid (2 mL) was added urea (132 mg, 2.20 mmol). The mixture was heated under reflux for 18 hours. The reaction mixture was cooled to room temperature, and filtered. The obtained crystal was washed with ethyl acetate, and dried to give the titled compound as a yellow crystal (130 mg, yield 60%).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08680110B2
Source datasetuspto-grants-2014_03
ORD IDord-82810ac28de44b269b769ff83e3c9f82
Source noteuspto-grants-2014_03