Ammonia → HCID 54191899, compound

Participants

Reaction Steps

4.03 mol of 5-chloro-6-(4-chlorophenylsulphonyl)-1,3-benzodioxole-2-carboxylic acid ethyl ester are dissolved in room temperature in 50 ml of dichloromethane. While stirring vigorously, 50 ml of a concentrated aqueous ammonia solution are added, and stirring is continued for 18 hours. A thick crystalline suspension is formed from the initial emulsion. This suspension is then adjusted by 6N HCl to pH 2-3 at room temperature, filtered and subsequently washed with water. After drying, colourless crystals of 5-chloro-6-(4-chlorophenylsulphonyl)-1,3-benzodioxole-2-carboxylic acid amide having a melting point of 240°-242° are obtained.

Provenance & Evidence