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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 641310Generated: October 26, 2026

5-Chloro-2-methoxybenzene-1-sulfonyl chloride → 3-(5-Chloro-2-methoxy-benzenesulfonylamino)-4-hydroxy-5-trifluoromethyl-benzoic acid methyl ester

https://huagongshe.com/reaction/641310

Reaction equation

Participants

RoleNameHCIDCharge
Reactant5-Chloro-2-methoxybenzene-1-sulfonyl chlorideHCID 2734272—
Reactant3-Amino-4-hydroxy-5-trifluoromethyl-benzoic acid methyl esterHCID 66789397—
SolventTolueneHCID 1140—
Product3-(5-Chloro-2-methoxy-benzenesulfonylamino)-4-hydroxy-5-trifluoromethyl-benzoic acid methyl esterHCID 66788674—

Reaction Steps

A suspension of 3-amino-4-hydroxy-5-trifluoromethyl-benzoic acid methyl ester (4.66 g, 19.8 mmol) and 5-chloro-2-methoxybenzenesulfonyl chloride (4.78 g, 19.8 mmol) in toluene (38 mL) was heated at reflux for 48 h. After cooling, the precipitate was collected by filtration and washed with toluene to afford 3-(5-chloro-2-methoxy-benzenesulfonylamino)-4-hydroxy-5-trifluoromethyl-benzoic acid methyl ester. Off-white solid, MS (ISP)=438.0 (M−H)−.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07696200B2
Source datasetuspto-grants-2010_04
ORD IDord-e80f5b2c92da48b68819279dea743845
Source noteuspto-grants-2010_04