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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 842189Generated: November 2, 2026

Hydrochloric Acid → HCID 10178135, compound

https://huagongshe.com/reaction/842189

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
Reactantp-Toluenesulfonic acidHCID 6101—
Reactant3-Aminobenzenesulfonic acidHCID 8474—
ReactantSodium HydroxideHCID 14798—
ReactantEthyl 2-benzoyl-4-oxopentanoateHCID 14689358—
SolventEthanolHCID 702—
ProductHCID 10178135HCID 10178135—

Reaction Steps

Metanilic acid (5 mmol, 0.2 g), 2-benzoyl-4-oxo-pentanoic acid ethyl ester (5 mmol, 1.2 g), sodium hydroxide (5 mmol, 0.2 g), and tosic acid (0.1 g) were combined in ethanol, then heated under reflux. The resulting oil was treated with HCl (hydrochloric acid) at 0° C. to 5° C. to precipitate the unreacted metanilic acid. The remaining material was concentrated under vacuum and purified over silica gel. The named product was collected as brown crystals (m.p. 91° C.-92.5° C.)

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06372777B1
Source datasetuspto-grants-2002_04
ORD IDord-4b5fb80a27184b42bb074163ab16ea88
Source noteuspto-grants-2002_04