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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1754126Generated: November 3, 2026

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

https://huagongshe.com/reaction/1754126

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 numberUS09169218B2
Source datasetuspto-grants-2015_10
ORD IDord-72efc72f5b424f1cb48cf501b41b280d
Source noteuspto-grants-2015_10