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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1875488Generated: October 30, 2026

Phosphorus oxychloride → 4-Chloro-6-nitroquinazoline

https://huagongshe.com/reaction/1875488

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPhosphorus oxychlorideHCID 24813—
Reactant6-Nitro-3,4-dihydroquinazolin-4-oneHCID 135398502—
Product4-Chloro-6-nitroquinazolineHCID 1135625778%

Reaction Conditions

Temperature105 °C

Reaction Steps

In a 100 mL flask equipped with a reflux condenser, 6-nitro-quinazolin-4-one 2.85 g (15 mmol), phosphoryl chloride 25 mL were added. The mixture was stirred at 105° C. for 3 h, and then was dropped into 150 mL of ice water carefully, the squama solid deposited was filtered out, dried, and identified as the title compound. Yield: 78%.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08309563B2
Source datasetuspto-grants-2012_11
ORD IDord-76d72632e053407da66c5090d92bd7cf
Source noteuspto-grants-2012_11