4-Hydrazinylbenzenesulfonamide hydrochloride → HCID 178514752, compound

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The title compound was prepared from 5-hydroxy-1H-indole-2,3-dione (Ijaz, et al., Indian Journal of Chemistry 1994, 33B, 288-9) and 4-sulfonamidophenylhydrazine hydrochloride according to Procedure G in 30% yield: 1H NMR (DMSO-d6): δ 6.79 (dd, J=2.2, 8.3 Hz, 1H), 6.72 (d, J=8.3 Hz, 1H), 6.98 (d, J=2.2 Hz, 1H), 7.25 (s, 2H), 7.53 (d, J=8.7 Hz, 2H), 7.78 (d, J=8.7 Hz, 2H), 9.20 (s, 1H), 10.80 (s, 1H), 12.82 (s, 1H); APCI−MS m/z 331 (M−H)−.

Provenance & Evidence