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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2423013Generated: November 1, 2026

Malonic Acid → 4-Phenoxyquinoline

https://huagongshe.com/reaction/2423013

Reaction equation

Participants

RoleNameHCIDCharge
ReactantMalonic AcidHCID 867—
Reactant4-Aminobenzoic AcidHCID 978—
ReactantPhosphorus oxychlorideHCID 24813—
Reactant4-PhenoxyquinolineHCID 12675969—
Product4-PhenoxyquinolineHCID 12675969—
Product4-Hydroxy-2-oxo-1,2-dihydroquinoline-6-carboxylic acidHCID 54734616—

Reaction Steps

The 4-phenoxyquinoline core structure was synthesized according to a published procedure (42). The synthesis of compound 3 is described in FIG. 13. The synthesis began with stirring p-aminobenzoic acid with malonic acid and phosphorus oxychloride to yield 4-hydroxy-6-carboxy-2-(1H)-quinolinone. Reacting the quinolinone with dichloroiodobenzene is followed by refluxing with butanol produced 3-Iodo-4-phenoxyl-6-carboxyl-2-(1H)-quinolinone. Diodination of the 3-iodo quinolinone yielded compound 3.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07960548B2
Source datasetuspto-grants-2011_06
ORD IDord-b545bf2c37824ea2bc15d67e4e3d0ebb
Source noteuspto-grants-2011_06