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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 432547Generated: October 31, 2026

Potassium Hydroxide → 4-(4-Bromophenyl)quinolin-8-amine

https://huagongshe.com/reaction/432547

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPotassium HydroxideHCID 14797—
ReactantStannous chloride dihydrateHCID 61436—
Reactant4-(4-Bromophenyl)-8-nitroquinolineHCID 18759611—
SolventEthanolHCID 702—
Product4-(4-Bromophenyl)quinolin-8-amineHCID 18759621—

Reaction Steps

A solution of tin (II) chloride dihydrate (9.50 g) and 4-(4-bromophenyl)-8-nitroquinoline (4.60 g) in 50 mL absolute ethanol was refluxed for 6 hours. The reaction mixture was cooled to room temperature and then made alkaline with 30% KOH solution. The precipitated solid was filtered off, and dissolved in chloroform. The filtrate was extracted with ether. The ether extract and chloroform solution were combined and dried over MgSO4. Evaporation gave a solid with 1H-NMR spectral signals consistent with 8-amino-4-(4-bromophenyl)quinoline.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06664111B2
Source datasetuspto-grants-2003_12
ORD IDord-b5f09c8ce54945038e4f919e1dc1730f
Source noteuspto-grants-2003_12