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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1157444Generated: November 4, 2026

2-Amino-5-methoxy-4-methylbenzoic acid → 2-Amino-5-hydroxy-4-methylbenzoic acid

https://huagongshe.com/reaction/1157444

Reaction equation

Participants

RoleNameHCIDCharge
Reactant2-Amino-5-methoxy-4-methylbenzoic acidHCID 21291497—
SolventHydrogen iodideHCID 24841—
Product2-Amino-5-hydroxy-4-methylbenzoic acidHCID 58824235100%

Reaction Steps

2-Amino-5-methoxy-4-methylbenzoic acid (2.7 g, 14.9 mmol, 61%) and aqueous hydriodic acid (40%, 80 mL) were heated at reflux for 36 h. The aqueous was evaporated under vacuum and the residue washed with ether to yield 2-amino-5-hydroxy-4-methylbenzoic acid (INTERMEDIATE V.1) (2.5 g, 14.9 mmol 100%)

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07807686B2
Source datasetuspto-grants-2010_10
ORD IDord-7ca3f52abfb0491b85fd4405e7dcd31b
Source noteuspto-grants-2010_10