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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1895501Generated: October 31, 2026

4-Aminophenol → 1,4-Naphthalenedione, 2-chloro-3-((4-hydroxyphenyl)amino)-

https://huagongshe.com/reaction/1895501

Reaction equation

Participants

RoleNameHCIDCharge
Reactant4-AminophenolHCID 403—
ReactantDichloneHCID 8342—
SolventEthanolHCID 702—
Product1,4-Naphthalenedione, 2-chloro-3-((4-hydroxyphenyl)amino)-HCID 260556—

Reaction Steps

2,3-Dichloro-1,4-naphthoquinone (1.0 g, 4.4 mmol) was dissolved in 80 ml ethanol at 60° C., to which p-aminophenol (1.44 g, 13.2 mmol) in 20 ml ethanol was added. The reaction mixture was stirred at room temperature for 16 h. The precipitated product was filtered off and recrystallized from ethanol to afford pure purple crystals. Yield: 1.30 g (99%), Mp: 233° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08513437B2
Source datasetuspto-grants-2013_08
ORD IDord-6127ee6e063b43549b10842add879073
Source noteuspto-grants-2013_08