Chlorosulfonic acid → HCID 21482735, compound

Participants

Reaction Steps

A solution of 15 g. of 4-amino-3,5-dibromobenzenesulfonamide in 45 ml. of chlorosulfonic acid is heated on a steam bath at 95° C. for 2 hours. The reaction mixture is cooled and poured onto 400 ml. of ice/water mixture. The resultant precipitate is filtered, dissolved in methylene chloride, and the methylene chloride solution is dried, filtered and evaporated to dryness, affording 4-amino-3,5-dibromobenzenesulfonylchloride, m.p. 153°-155° C.

Provenance & Evidence