Ammonia → HCID 21520067, compound

Participants

Reaction Steps

5-Chlorosulfonyl-3-ethylthio-4-phenoxybenzoic acid (1 g) is added to concentrated aqueous ammonia (20 ml) at 5°-10° C. After 30 minutes the reaction mixture is heated on a steam-bath for 1 hour while most of the excess of ammonia was allowed to distill off. After cooling, the precipitated ammonium salt of 3-ethylthio-4-phenoxy-5-sulfamylbenzoic acid is collected by filtration. The salt is dissolved in hot water (75 ml) and the solution acidified by addition of hydrochloric acid. After cooling, the precipitated 3-ethylthio-4-phenoxy-5-sulfamylbenzoic acid is collected by filtration and recrystallized from aqueous ethanol to yield the compound with a melting point of 225°-227° C after drying in vacuo at 80° C.

Provenance & Evidence