2-Phenoxypyridine-3-carbonyl chloride → N'-(2-phenoxypyridine-3-carbonyl)-3-(trifluoromethyl)benzhydrazide

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Reaction Steps

A solution of 3-(trifluoromethyl)benzhydrazide (102.1 mg, 0.5 mmol), 2-phenoxypyridine-3-carbonyl chloride (117 mg, 0.5 mmol) in pyridine (5 mL) was refluxed for 2 h. It was evaporated in vacuo and the residue was purified by column chromatography (silica gel, EtOAc/CH2Cl2=4:1) to give 107 mg (54%) of the title compound. 1H NMR (CDCl3): 10.88 (d, J=6.3 Hz, 1H), 9.80 (d, J=6.3 Hz, 1H), 8.60 (m, 1H), 8.30 (m, 1H), 8.17 (s, 1H), 8.06 (d, J=8.1 Hz, 1H), 7.81 (d, J=7.8 Hz, 1H), 7.61 (t, J=7.2 Hz, 1H), 7.51-7.46 (m, 2H), 7.34-7.17 (m, 4H).

Provenance & Evidence