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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1034163Generated: November 3, 2026

4,7-Dichloroquinoline → Hydroxychloroquine, (S)-

https://huagongshe.com/reaction/1034163

Reaction equation

Participants

RoleNameHCIDCharge
Reactant4,7-DichloroquinolineHCID 6866—
Reactant2-(4-Aminopentyl(ethyl)amino)ethanolHCID 112288—
ReactantEthanol, 2-[(4-aminopentyl)ethylamino]-, (S)-HCID 11095130—
ProductHydroxychloroquine, (S)-HCID 178396—

Reaction Steps

(S)-(+)-Hydroxychloroquine was prepared by condensing (S)-(+)-2-[(4-aminopentyl)ethylamino]ethanol with 4,7-dichloroquinoline. The latter compound is known. The (S)-(+)-2-[(4-aminopentyl)ethylamino]ethanol was prepared by resolving known racemic 2-[(4-aminopentyl)ethylamino]-ethanol by forming a salt thereof with known (S)-(+)-mandelic acid and separating the (S)-(+)-mandelic acid salts of the two enantiomers by crystallization.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05314894
Source datasetuspto-grants-1994_05
ORD IDord-5fb972e8a84e4214b3cb1f9b560808a8
Source noteuspto-grants-1994_05