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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1496850Generated: October 30, 2026

Hydrochloric Acid → 4-Bromo-1-(methanesulfonyl)-2-methylbenzene

https://huagongshe.com/reaction/1496850

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantBromoacetic AcidHCID 6227—
ReactantSodium SulfiteHCID 24437—
ReactantSodium BicarbonateHCID 516892—
Reactant4-Bromo-2-methylbenzenesulfonyl chlorideHCID 2781338—
SolventWaterHCID 962—
Product4-Bromo-1-(methanesulfonyl)-2-methylbenzeneHCID 2061676544.4%

Reaction Conditions

Temperature75 °C

Reaction Steps

235 mg Sodium sulfite and 470 mg NaHCO3 were dissolved in 1.75 mL of water and heated to 75° C. 500 mg of 4-Bromo-2-methyl-benzenesulfonyl chloride were added in portions within 10 min (gas formation) and the mixture stirred for 1 h at 75° C. 387 mg of Bromoacetic acid and 150 μL of water was added in small portions and the mixture stirred at 105° C. overnight. After cooling to 25° C. the mixture was acidified to pH 1 using 4N HCl. The resulting precipitate was collected and washed with water to yield 205 mg solid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09199937B2
Source datasetuspto-grants-2015_12
ORD IDord-3e57dc85702c4f478f743857d35ce299
Source noteuspto-grants-2015_12