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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1464272Generated: October 31, 2026

Pyridine → HCID 22449610, compound

https://huagongshe.com/reaction/1464272

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPyridineHCID 1049—
ReactantThionyl ChlorideHCID 24386—
Reactant1-(4-Hydroxybutyl)quinazoline-2,4(1H,3H)-dioneHCID 19087700—
SolventTetrahydrofuranHCID 8028—
ProductHCID 22449610HCID 22449610—

Reaction Steps

A mixture of 1-(4-hydroxybutyl)-2,4(1H,3H)-quinazolinedione 290 mg), thionyl chloride (0.54 ml), and pyridine (98 mg) in tetrahydrofuran (10 ml) was refluxed for 2 hours. After evaporation of the solvents, the residue was dissolved in chloroform, washed in turn with water, saturated sodium bicarbonate and brine, dried over magnesium sulfate, and evaporated. Crude material was crystallized from ethyl ether-isopropyl ether to give 1-(4-chlorobutyl)-2,4(1H,3H)-quinazolinedione (226 mg) as a powder.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05304560
Source datasetuspto-grants-1994_04
ORD IDord-86c975f0c8aa417ab8f12e819cef6353
Source noteuspto-grants-1994_04