Abstract
Abstract A novel series of meta-diamide compounds incorporating a pyrazole moiety (2a–2v) were designed and synthesized based on cyproflanilide. Their structures were validated through 1H NMR, 13C NMR, and HRMS analyses. These compounds were evaluated for their insecticidal activity against Plutella xylostella, Mythimna separate, Tetranychus cinnabarinus, and Nilaparvata lugens. Most of the title compounds exhibited good activity against N. lugens at 400 mg/L. Compound 2k demonstrated potential for further optimization as an insecticidal lead, thereby extending the application of meta-diamide compounds in the field of sucking mouthparts.
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