Sodium Bicarbonate → 2-Chloro-5-(4-hydroxy-3-methyl-2-(methylimino)-4-thiazolidinyl)benzenesulfonamide

Participants

Reaction Steps

10 g of powdered 4-(4-chloro-3-sulfamoylphenyl)-3-methyl-2-methylimino-1,3-thiazolidine-4-ol-hydrobromide were dissolved in 500 ml of water at 50° C, while stirring, 100 ml of saturated sodium bicarbonate solution were added and the solution was thoroughly stirred for 2 hours at 5°-10° C, 4-(4-chloro-3-sulfamoylphenyl)-3-methyl-2-methylimino-1,3-thiazolidine-4-ol was filtered off and washed several times with water. Melting point: 187°-188° C (decomposition).

Provenance & Evidence