Abstract
A series of compounds containing trifluoroacetyl groups were synthesized, and their insecticidal activity against Nilaparvata lugens and Aphis craccivora was evaluated. The compound structure was identified by NMR, HRMS, and single-crystal diffraction. The bioassay results indicated that compound 4-1 (R1 is chloropyridine, R2 is H), 4-2 (R1 is chlorothiazole, R2 is H) and 4-19 (R1 is benzyl, R2 is isopropyl) had the best activity against Nilaparvata lugens (93.5%, 94.1% and 95.5%) at 100mg/L concentration. The effect of different substituents of R1 or R2 on the activity was studied through the structure-activity relationship. Molecular docking of compounds 4-1 and 4-2 was discussed.
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