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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1028346Generated: November 1, 2026

Chloroform → 3-(2-Chloroethyl)-2-ethyl-3,4-dihydro-4-quinazolinone

https://huagongshe.com/reaction/1028346

Reaction equation

Participants

RoleNameHCIDCharge
ReactantChloroformHCID 6212—
ReactantThionyl ChlorideHCID 24386—
Reactant4(3H)-Quinazolinone, 2-ethyl-3-(2-hydroxyethyl)-HCID 10376083—
SolventHexaneHCID 8058—
Product3-(2-Chloroethyl)-2-ethyl-3,4-dihydro-4-quinazolinoneHCID 5972390432.8%

Reaction Steps

2-ethyl-3-(2-hydroxyethyl)quinazoline-4 (3H)-one (5.00 g; 22.91 mmol) and thionyl chloride (1.672 mL, 22.91 mmol) were added to a 150 mL reactor, together with 60 mL of chloroform. The reaction medium was heated to reflux and for completing the reaction, which was accompanied through CG/MS. After the end of the reaction, 100 mL of hexane were added and the solution was agitated at room temperature in order to precipitate the product. The resulting suspension was vacuum filtered, washed with two portions of hexane and dried, yielding 3-(2-chloroethyl)-2-ethylquinazoline-4 (3H)-one as a white solid (1.78 g; 7.52 mmol; yield: 32.8%).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08735578B2
Source datasetuspto-grants-2014_05
ORD IDord-b05263fa38f14d76adbdb9be85e7eaa2
Source noteuspto-grants-2014_05