3-Chloro-6-(1-methyl-1H-pyrazol-4-yl)pyridazine → HCID 57654475, compound

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Reaction Steps

Quinazolin-6-yl-acetic acid hydrazide (0.032 g, 0.158 mmol) and 3-chloro-6-(1-methyl-1H-pyrazol-4-yl)-pyridazine (0.031 g, 0.158 mmol) were heated to 165° C. in butanol (2 mL) for five hours. The reaction was cooled to room temperature, evaporated in vacuo and purified via silica gel column chromatography eluting with 5% methanol in dichloromethane to give 0.0031 g (7%) of 6-[6-(1-methyl-1H -pyrazol-4-yl)-[1,2,4]triazolo[4,3-b]pyridazin-3-ylmethyl]-quinazoline. 1H NMR (400 MHz, CD3OD) δ 8.45 (s, 1H), 8.29 (s, 1H), 8.06 (d, 2H, J=9.6 Hz), 7.60 (d, 2H, J=9.6 Hz), 7.55 (m, 1H), 7.17 (d, 1H, J=8.0 Hz), 6.08 (s, 1H), 4.58 (m, 2H), 3.89 (s, 3H). Mass spectrum (LCMS, ESI pos.): Calcd for C18H14N8; found: 343.3 (M+H).

Provenance & Evidence