3-Chlorothiophene-2-carbonyl chloride → 2-[5-(3-Chloro-thiophen-2-yl)-[1,2,4]oxadiazol-3-yl]-5-trifluoromethyl-pyridine

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Reaction Steps

The title compound was prepared from 5-trifluoromethyl-pyridine-2-amidoxime (516 mg, 2.52 mmol) and 3-chloro-thiophene-2-carbonyl chloride (455 mg, 2.51 mmol) similar to Example 16, and yielded 764 mg (92%) of off-white solid. 1H NMR (CDCl3): 9.09 (m, 1H), 8.36 (d, J=8.24 Hz, 1H), 8.14 (m, 1H), 7.66 (d, J=5.22 Hz, 1H), 7.16 (d, J=5.49 Hz, 1H).

Provenance & Evidence