Hydrazine hydrate (1:1) → HCID 178509389, 화합물

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To a solution of 2-(methoxy(4-phenoxyphenyl)methylene)malononitrile (80 g, 290 mmol) in ethanol (200 mL) was added hydrazine hydrate (20 mL). The mixture was stirred at RT for 16 hr then was concentrated to give the crude product and washed with MeOH (30 mL) to afford 55 g (68.8%) of 5-amino-3-(4-phenoxyphenyl)-1H-pyrazole-4-carbonitrile as a off-white solid. 1H NMR (DMSO-d6) δ 12.11 (br s, 1H), 7.80 (d, J=8.8 Hz, 2H), 7.46-7.39 (m, 2H), 7.18 (t, J=7.6 Hz, 1H), 7.12-7.04 (m, 4H), 6.43 (br s, 2H).

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