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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 238198Generated: October 30, 2026

1-(4-Bromobenzene-1-sulfonyl)piperazine → 2-{1-[4-(4-Bromo-benzenesulfonyl)-piperazin-1-yl]-ethyl}-3-propyl-3H-quinazolin-4-one

https://huagongshe.com/reaction/238198

Reaction equation

Participants

RoleNameHCIDCharge
Reactant1-(4-Bromobenzene-1-sulfonyl)piperazineHCID 712924—
Reactant2-(1-bromo-ethyl)-3-propyl-3H-quinazolin-4-oneHCID 59993188—
SolventEthanolHCID 702—
Product2-{1-[4-(4-Bromo-benzenesulfonyl)-piperazin-1-yl]-ethyl}-3-propyl-3H-quinazolin-4-oneHCID 1195783013.5%

Reaction Steps

A mixture of 2-(1-bromo-ethyl)-3-propyl-3H-quinazolin-4-one (30 mg, 0.1 mmol) and 1-(4-bromo-benzenesulfonyl)-piperazine (47 mg, 0.15 mmol) in ethanol (1 mL) was refluxed overnight. The reaction mixture was then concentrated in vacuo and purified by reverse phase HPLC to yield the product as a white powder (7 mg, 9%). 1H NMR (CDCl3) δ 1.03 (t, 3H, J=5.8 Hz), 1.72 (sex, 2H, J=6.0), 1.80 (d, 3H, J=5.2), 3.48 (m, 6H), 3.90 (m, 3H), 4.23 (m, 1H), 4.77 (q, 1H, J=5.2 Hz), 7.58 (m, 3H), 7.68 (d, 1H, J=6.5 Hz), 7.72 (d, 2H, J=7.1 Hz), 7.81 (t, 1H, J=6.2 Hz), 8.28 (d, 1H, J=6.5 Hz).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08642609B2
Source datasetuspto-grants-2014_02
ORD IDord-74b88ef3f0bb430fb936832d66b3de64
Source noteuspto-grants-2014_02