反应详情

1.15 g (0.003 mol) of N-[4-(2-bromo-6-methyl-pyridin-4-ylsulfamoyl)-phenyl]-acetamide were dissolved in 15 ml of 2N NaOH and boiled at reflux for 1 hour. After cooling the mixture was acidified to pH 5 with 2N HCl and the colourless precipitate which separated was filtered off. The material on the suction filter was washed with copious water and dried. There was obtained 0.95 g (93%) of 4-amino-N-(2-bromo-6-methyl-pyridin-4-yl)-benzenesulfonamide as colorless crystals; m.p.: >110° C. (dec.).

1. temperatureat reflux for 1 hour
2. temperatureAfter cooling the mixture
3. customthe colourless precipitate which separated
4. filtrationwas filtered off
5. filtrationThe material on the suction filter
6. washwas washed with copious water
7. customdried