Hydrazine hydrate (1:1) → HCID 89733627, compound

Participants

Reaction Steps

To a solution of 2-ethyl-1-isothiocyanato-4-methoxybenzene (4.9 g, 25 mmol) in ethanol (22 mL), was added slowly, hydrazine hydrate (1.3 g, 28 mmol). The reaction mixture was stirred at room temperature for 18 hours. The reaction mixture was evaporated under reduced pressure and diluted with ethyl acetate (250 mL) and washed with water (2×50 mL), followed by brine (2×50 mL). The organic phase was dried over sodium sulfate, filtered, and evaporated under reduced pressure. Purification by flash column chromatography using 0-40% ethyl acetate/hexanes as eluent provided the title compound as a white solid (4.9 g, 86%): mp 113-115° C.; 1H NMR (400 MHz, DMSO-d6) δ 9.19 (s, 1H), 8.89 (s, 1H), 7.20-7.19 (m, 1H), 6.77-6.71 (m, 2H), 4.71 (bs, 2H), 3.74 (s, 3H), 2.52-2.47 (m, 2H), 1.13-1.08 (m, 3H); ESIMS m/z 224 ([M−H]−).

Provenance & Evidence