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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 733186Generated: October 30, 2026

Methanesulfonyl chloride → N-(3-Bromo-5-(trifluoromethyl)phenyl)methanesulfonamide

https://huagongshe.com/reaction/733186

Reaction equation

Participants

RoleNameHCIDCharge
ReactantMethanesulfonyl chlorideHCID 31297—
Reactant3-Bromo-5-(trifluoromethyl)anilineHCID 2735880—
Catalyst4-(Dimethylamino)pyridineHCID 14284—
SolventPyridineHCID 1049—
SolventEthyl AcetateHCID 8857—
ProductN-(3-Bromo-5-(trifluoromethyl)phenyl)methanesulfonamideHCID 6549144299.6%

Reaction Steps

To a solution of 3-Amino-5-bromobenzotrifluoride (200 mg) in pyridine (2 mL) was added methane sulphonyl chloride (115 mg) and one crystal of 4-(dimethyl-amino)pyridine. The mixture was stirred at room temperature for four hours then diluted with ethyl acetate (50 mL) and washed with HCl (2M, 50 mL) and saturated sodium chloride solution (50 mL). Organics were separated, dried over sodium sulphate, filtered, and solvent was removed under reduced pressure to yield N-(3-bromo-5-trifluoromethyl-phenyl)-methanesulfonamide (264 mg).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07589095B2
Source datasetuspto-grants-2009_09
ORD IDord-2a24ce1fa7204efb8ea985aec472f037
Source noteuspto-grants-2009_09