Two series of benzoylphenylurea derivatives were synthesized as candidate propesticides by a nucleophilic addition reaction between 2,6-difluronbenzoyl isocyanate and N-substitutedaniline. The new compounds were identified by 1H NMR spectroscopy, electron ionization-mass spectrometry, and elemental analyses. The bioactivities of the new compounds were evaluated. All of the propesticides reported here were soluble in most organic solvents, and their hydrophobicities were improved obviously. The result of the bioactivities of the new compounds against Oriental armyworm showed that some of the new compounds are good as compared to diflubenzuron and penfluron.

Two series of novel N-alkyloxyoxalyl derivatives of 2-arylpyrrole were synthesized, and their structures were characterized by (1)H NMR spectroscopy, elemental analysis, and single-crystal X-ray diffraction analysis. The insecticidal activities of the new compounds were evaluated. The results of bioassays indicated that some of these title compounds exhibited excellent insecticidal activities, and their insecticidal activities against oriental armyworm, mosquito, and spider mite are comparable to those of the commercialized Chlorfenapyr.

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We replaced the benzoyl moiety by ferrocenoyl in benzoylphenylurea, and synthesized a series of new benzoylphenylureas containing a ferrocenyl moiety by the reaction of carbamylferrocene with phenylisocyanate in good yields. The title compounds were identified by IR, 1 H NMR spectroscopy, electron-impact mass spectrometry and elemental analyses. The crystal structure of 1-ferrocenoyl-3-phenylurea was determined. The bioactivities of the new compounds were also determined.