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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1291376Generated: October 30, 2026

1-Methylpiperazine → 3,5-Dimethyl-2-[4-[4-[2-(4-methylpiperazinyl)ethoxy]benzoyl]benzylthio]-4(3H)-quinazolinone dihydrochloride

https://huagongshe.com/reaction/1291376

Reaction equation

Participants

RoleNameHCIDCharge
Reactant1-MethylpiperazineHCID 53167—
Reactant2-[4-[4-(2-Chloroethoxy)benzoyl]benzylthio]-3,5-dimethyl-4(3H)-quinazolinoneHCID 18918813—
SolventDimethylformamideHCID 6228—
Product3,5-Dimethyl-2-[4-[4-[2-(4-methylpiperazinyl)ethoxy]benzoyl]benzylthio]-4(3H)-quinazolinone dihydrochlorideHCID 18919226—

Reaction Steps

A solution of 2-[4-[4-(2-chloroethoxy]benzoyl]benzylthio]-3,5-dimethyl-4(3H)-quinazolinone (173 mg) and 1-methylpiperazine (0.12 ml) in DMF (5 ml) was stirred at 100° C. for 15 hours. This reaction mixture was concentrated and the residue was dissolved in ethyl acetate, washed with water, and dried. Then, hydrogen chloride/ethyl acetate was added and the precipitated hydrochloride was collected by filtration and dried to provide the title compound as colorless solid (122 mg).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05753664
Source datasetuspto-grants-1998_05
ORD IDord-a1702bb215d745e1846ee33727b9a73a
Source noteuspto-grants-1998_05