Potassium Carbonate → 2-(1-Methoxycarbonylethoxy)benzenesulfonamide

Participants

Reaction Steps

34.6 g of 2-hydroxybenzenesulfonamide and 55.3 g of potassium carbonate are added to 800 ml of acetonitrile. With efficient stirring, 33.4 g of methyl 2-bromopropionate are added dropwise over 10 minutes and the suspension is then heated for 5 hours to 45° C. After the reaction mixture has cooled, the precipitated salts are isolated and the filtrate is concentrated in vacuo. The residue is recrystallised from ethanol, affording 41.8 of 2-(1-methoxycarbonylethoxy)benzenesulfonamide with a melting point of 140°-142° C.

Provenance & Evidence