Water → HCID 15579464, compound

Reaction equation

[C:1]([C:4]1[CH:5]=[CH:6][C:7]([CH3:14])=[C:8]([S:10]([NH2:13])(=[O:12])=[O:11])[CH:9]=1)(=[O:3])[CH3:2].[Br:15]Br.O>CO>[Br:15][CH2:2][C:1]([C:4]1[CH:5]=[CH:6][C:7]([CH3:14])=[C:8]([S:10]([NH2:13])(=[O:11])=[O:12])[CH:9]=1)=[O:3]

Participants

Procedure

21.3 Grams (0.1 M) of 5-acetyl-2-methylbenzenesulfonamide was dissolved in 180 g of methanol, while the resulting solution was kept at 35°-40° C., 16.0 g (0.1 M) of bromine was added dropwise by taking 1.5 hours. The reaction mixture was stirred for 10 minutes after the dropwise addition, 80 g of water was added to the reaction mixture and the whole reaction mixture was stirred for further 30 minutes at room temperature. A part of methanolwater was removed by evaporation, then the crystals formed were collected by filtration, washed with water and dried to obtain 28.0 g of 5-bromoacetyl-2-methylbenzenesulfonamide in the form of white crystals. Melting point: 146.5°-147.5° C Yield: 95.9%.