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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2174679Generated: October 29, 2026

Hydrochloric Acid → 2-Chloro-5-(methylsulphonyl)benzoic acid

https://huagongshe.com/reaction/2174679

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantSodium ThiosulfateHCID 24477—
ReactantSodium BicarbonateHCID 516892—
Reactant2-Chloro-5-(methylsulfanyl)benzoic acidHCID 608814—
ReactantPotassium hydroxy sulfiteHCID 23707502—
SolventEthylenediaminetetraacetic AcidHCID 6049—
SolventSodium HydroxideHCID 14798—
Product2-Chloro-5-(methylsulphonyl)benzoic acidHCID 2329132—

Reaction Steps

To a solution of 2-chloro-5-(methylthio)benzoic acid (6.05 g, 30 mmol) and NaHCO3 (20 g, 240 mmol) in NaOH 0.5N (75 ml) a solution of oxone (24 g) in EDTA (0.0004M, 90 ml) was added. After 1 hour at RT Na2S2O3 (15 g in 100 ml of water) was added; after 10 min HCl 4N was added to pH 2. The white solid was filtered, washed with water and dried in vacuum at 70° C. Yield 6 g white solid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09062033B2
Source datasetuspto-grants-2015_06
ORD IDord-1af98a6918ec49cb861a10248b48a5e4
Source noteuspto-grants-2015_06