反应详情

To a suspension of 5-acetyl-2-aminobenzenesulfonamide (see compound 13) (0.45 g, 2.1 mmol) in 96% EtOH (40 ml) was added H2NOH.HCl (0.28 g, 4 mmol) and 2M NaOH (2 ml). The mixture was boiled for 2 h and the solvent was evaporated. The residue was triturated with water (25 ml) and the product was filtered off and dried, yielding 0.39 g (81%) of 2-amino-5-(1-hydroxyiminoethyl)benzenesulfonamide as yellow powder. The product was further transformed by Method G (using cyclohexanecarboxaldehyde). M.p. 230-233° C.

1. customthe solvent was evaporated
2. customThe residue was triturated with water (25 ml)
3. filtrationthe product was filtered off
4. customdried