In order to search for novel potent and environmentally benign insecticides,a series of anthranilic diamides containing various fluorinated groups were designed and synthesized.Their structures were confirmed by ~1H NMR,^(13)C NMR,^(19)F NMR,elemental analysis,HRMS or mass spectra.Their insecticidal activities against oriental armyworm(Mythimna separata) and diamondback moth(Plutella xyiostella)were evaluated.The preliminary structure-activity relationship(SAR) was discussed in detail.The biological assay indicated that most of the compounds exhibited moderate to excellent insecticidal activities.Especially,Ia showed high larvicidal activity against oriental armyworm.Meanwhile,Iu had better larvicidal effects against diamondback moth than commercial chlorantraniliprole.
Sulfonylurea herbicides have been applied worldwide in agriculture. Some sulfonylurea residues might exist in soil longer than that people expected. However, flupyrsulfuron-methyl-sodium which was firstly reported as a new 5-substituted sulfonylurea herbicide has less than one month residual life. Therefore, 5-substituted benzenesulfonylureas are potential molecules to regulate its residual situation. In order to develop new sulfonylurea derivatives, the substituent on the critical 5-posotion of the benzene ring was optimized. On the basis of our former work on sulfonylureas which contains a characteristic mono-substituted pyrimidine moiety, twenty-six new sulfonylurea derivatives were synthesized and their structures were confirmed by 1H NMR, 31P NMR and elemental analysis. The greenhouse bioassay tests show that some title compounds exhibit potent herbicidal activity.
CAO GangWANG Mei-yiWANG Ming-zhongWANG Su-huaLI Yong-hongLI Zheng-ming
