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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 462613Generated: October 24, 2026

Hydrochloric Acid → Methyl 4-chloro-2-(4-hydroxyphenylamino)benzoic acid

https://huagongshe.com/en/reaction/462613

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantDimethyl SulfateHCID 6497—
ReactantBoron tribromideHCID 25134—
Reactant4-Chloro-2-((4-methoxyphenyl)amino)benzoic acidHCID 66674—
Reactant4-Chloro-2-(4-hydroxyphenylamino)benzoic acidHCID 425423—
ReactantHCID 20225134HCID 20225134—
SolventMethanolHCID 887—
ProductMethyl 4-chloro-2-(4-hydroxyphenylamino)benzoic acidHCID 20225128—

Reaction Steps

[I; R=4-Cl, R' and R"=H, Alk=CH3, OH at 4-position] is obtainable by esterification of 4-chloro-2-(4-hydroxyphenylamino)benzoic acid with methanol and hydrochloric acid; or by esterification of 4-chloro-2-(4-methoxyphenylamino)benzoic acid with dimethyl sulfate, followed by de-etherification of the resulting methyl 4-chloro-2-(4-methoxyphenylamino)benzoate with boron tribromide.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04515980
Source datasetuspto-grants-1985_05
ORD IDord-a077546466954d6184495be609ecff98
Source noteuspto-grants-1985_05