Synthesis, Acaricidal Activity, and Structure–Activity Relationships of Pyrazolyl Acrylonitrile Derivatives

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• 作者：Haibo Yu ; Yan Cheng ; Man Xu ; Yuquan Song ; Yanmei Luo ; Bin Li
• 刊名：Journal of Agricultural and Food Chemistry
• 出版年：2016
• 出版时间：December 28, 2016
• 年：2016
• 卷：64
• 期：51
• 页码：9586-9591
• 全文大小：325K
• ISSN：1520-5118

文摘

A series of novel pyrazolyl acrylonitrile derivatives was designed, targeting Tetranychus cinnabarinus, and synthesized. Their structures were identified by combination of ¹H NMR, ¹³C NMR, and MS spectra. The structures of compounds 18 and 19 were further confirmed by X-ray diffraction. Extensive greenhouse bioassays indicated that compound 19 exhibits excellent acaricidal activity against all developmental stages of T. cinnabarinus, which is better than the commercialized compounds cyenopyrafen and spirodiclofen. It was shown that the acute toxicity of compounds 19 to mammals is quite low. The structure–activity relationships are also discussed.