Malononitrile → HCID 178509169, compound

Participants

Reaction Steps

4-[(1H-Indazol-5-yl)hydrazono]-4H-pyrazole-3,5-diamine was prepared using 2-[(1H-indazol-5-yl)hydrazono]malononitrile (0.105 g, 0.5 mmol) which was derived from 5-aminoindazole (0.133 g, 1.0 mmol) and malononitrile (1.5 mmol) in a manner similar to that described in Example 2, and hydrazine hydrate. The resulting solid was isolated by filtration, washed with ethanol, and dried to yield 0.076 g (63%) of the title compound as a brown solid; 1H NMR (ppm, 200 MHz, DMSO-d6) δ 6.0 (br s, 4H), 7.50 (d, 1H), 7.94 (d, 1H), 8.0 (s, 1H), 8.08 (s, 1H), 10.68 (br s, 1H), 13.08 (s, 1H).

Provenance & Evidence