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Six novel derivatives of 2‐ferrocenyl‐5‐aryl‐1,3,4‐oxadiazoles have been synthesized through catalytic oxidation of benzoylhydrazone with nitrophthalocyanine iron (II) as catalyst and tert‐butyl hydroperoxide as oxidant. All of the compounds have been characterized by high‐resolution mass spectrometry, 1H, 13C NMR, and infrared spectroscopy. Moreover, the antifungal activities of all new compounds have been evaluated and the results showed that the compounds exhibited excellent antifungal activities. In addition, the molecular structure of compound 1c could also be determined by X‐ray single‐crystal diffraction.