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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 893681Generated: October 30, 2026

Thionyl Chloride → 3-(2-chloroethyl)-1-methyl-2,4(1H,3H)-quinazolinedione

https://huagongshe.com/reaction/893681

Reaction equation

Participants

RoleNameHCIDCharge
ReactantThionyl ChlorideHCID 24386—
Reactant3-(2-hydroxyethyl)-1-methyl-2,4(1H,3H)-quinazolinedioneHCID 14989892—
SolventChloroformHCID 6212—
Product3-(2-chloroethyl)-1-methyl-2,4(1H,3H)-quinazolinedioneHCID 1498989395%

Reaction Steps

A mixture of 4.5 parts of 3-(2-hydroxyethyl)-1-methyl-2,4-(1H,3H)quinazolinedione, 8 parts of thionyl chloride and 75 parts of trichloromethane was stirred and refluxed for 5 hours. The reaction mixture was evaporated, yielding 4.5 parts (95%) of 3-(2-chloroethyl)-1-methyl-2,4(1H,3H)-quinazolinedione as a residue (intermediate 171).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05126339
Source datasetuspto-grants-1992_06
ORD IDord-ce51fd2bb86f47de85b8e06f8fc820a3
Source noteuspto-grants-1992_06