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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 219867Generated: October 26, 2026

Sodium Hydroxide → 4-Amino-2-fluoro-5-methoxybenzoic acid

https://huagongshe.com/reaction/219867

Reaction equation

Participants

RoleNameHCIDCharge
ReactantSodium HydroxideHCID 14798—
ReactantMethyl 4-amino-2-fluoro-5-methoxybenzoateHCID 57955533—
SolventMethanolHCID 887—
Product4-Amino-2-fluoro-5-methoxybenzoic acidHCID 5298296399.4%

Reaction Conditions

Temperature50 °C

Reaction Steps

Methyl 4-amino-2-fluoro-5-methoxybenzoate (100 mg; 0.50 mmol; 1 eq.) was dissolved in MeOH (2 mL). NaOH (0.50 mL; 5 M; 2.51 mmol; 5 eq.) was added and the mixture was heated at 50° C. overnight. The solvents were evaporated. EtOAc was added and the resulting solution was washed with NH4Cl sat. The aqueous phase was extracted with EtOAc. Combined organic phases were dried over MgSO4, filtrated and evaporated, affording the title compound (92 mg; 99%). HPLC (Method A) Rt 1.92 min (Purity: 96.4%).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08202865B2
Source datasetuspto-grants-2012_06
ORD IDord-6d045645d8c14478a243487d3d7f4dfc
Source noteuspto-grants-2012_06