2-(4-Fluorophenyl)acetohydrazide → 3-(4-Fluoro-benzyl)-6-thiophen-2-yl-[1,2,4]triazolo[4,3-b]pyridazine

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Reaction Steps

The title compound was prepared as described in Example 17 from 4-fluorophenylacetic acid hydrazide (1.04 mmol) and 3-chloro-6-thiophen-2-yl-pyridazine (0.52 mmol) as a pale beige solid. 1H NMR (CD3OD) δ 8.19 (1H, d, J=9.9 Hz), 7.93 (1H, dd, J=3.8 Hz, 0.9 Hz), 7.90 (1H, d, J =9.9 Hz), 7.75 (1H, dd, J=5.0 Hz, 1.0 Hz), 7.50 (2H, dd, J=9.0 Hz, 5.3 Hz), 7.24 (1H, dd, J=5.3 Hz, 3.8 Hz), 7.06 (2H, t, J=8.8 Hz), 4.59 (2H, s). ESI-MS (m/z): Calcd for C16H11FN4S: 310.1; found 311.2 (M+H).

Provenance & Evidence