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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 520286Generated: October 29, 2026

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

https://huagongshe.com/reaction/520286

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 numberUS09326984B2
Source datasetuspto-grants-2016_05
ORD IDord-68c1ffa6ddc34379bd6fe87116192aab
Source noteuspto-grants-2016_05