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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2250244Generated: October 31, 2026

Bromine → HCID 21102206, compound

https://huagongshe.com/reaction/2250244

Reaction equation

Participants

RoleNameHCIDCharge
ReactantBromineHCID 24408—
Reactant3-(Piperidin-4-yl)-3,4-dihydroquinazolin-2(1H)-oneHCID 11042597—
SolventAcetic AcidHCID 176—
SolventDichloromethaneHCID 6344—
ProductHCID 21102206HCID 21102206—

Reaction Steps

3-Piperidin-4-yl-3,4-dihydro-1H-quinazolin-2-one (0.2 g, 0.87 mmol) was dissolved in acetic acid (2 mL). To this solution was added a solution of bromine (1.8 mL, 35.14 mmol) in acetic acid (0.5 mL) dropwise over 5 min. After stirring for at room temperature for 1 h, the reaction mixture was diluted with methylene chloride, washed with water (2×), brine (2×), dried over sodium sulfate, filtered, and concentrated to afford 0.16 g (59%) which was used immediately without further purification. LC/MS: tR=0.91 min, 310.15 (MH)+.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07314883B2
Source datasetuspto-grants-2008_01
ORD IDord-aba2e7c76da64717a9755ec98e7b990c
Source noteuspto-grants-2008_01