反应详情

To 350 ml of a dichloromethane-methanol (5:2) solution containing 9.5 g of N-(4-nitro-2-phenoxy-5-phthalimidoacetylaminophenyl)methanesulfonamide was added 0.64 ml of 99% hydrazine monohydrate at room temperature, followed by stirring for 19 hours. The precipitate was removed by filtration, followed by washing with hot acetonitrile. The filtrate was washed with water, and concentrated under reduced pressere. The resulting precipitate was washed with ethanol and dried to give 5.2 g of N-(5-aminoacetylamino-4-nitro-2 -phenoxyphenyl)methanesulfonamide as yellow crystals.

1. customThe precipitate was removed by filtration
2. washby washing with hot acetonitrile
3. washThe filtrate was washed with water
4. concentrationconcentrated under reduced pressere
5. washThe resulting precipitate was washed with ethanol
6. customdried