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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1597550Generated: October 30, 2026

Hydrochloric Acid → 4-Amino-2-fluorobenzenesulfonamide

https://huagongshe.com/reaction/1597550

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantSodium HydroxideHCID 14798—
ReactantN-(3-fluoro-4-sulfamoylphenyl)acetamideHCID 17812095—
SolventWaterHCID 962—
Product4-Amino-2-fluorobenzenesulfonamideHCID 2231689863.5%

Reaction Steps

A mixture of 4-acetamido-2-fluorobenzenesulfonamide (11.15 g, 48 mmol) and sodium hydroxide (11.5 g, 480 mmol) in water (80 mL) was heated at reflux temperature for 3 hours. The mixture was made neutral by addition of 2N-HCl solution, and resulting suspension was filtered to give the subtitle compound (5.8 g, 63.5% yield).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06294558B1
Source datasetuspto-grants-2001_09
ORD IDord-61e968f6eeaa484d81c4d66a31856cd6
Source noteuspto-grants-2001_09