Synthesis, Structure and Biological Activities of Some Novel Anthranilic Acid Esters Containing N‐Pyridylpyrazole

In search of environmentally benign insecticides with high activity, low toxicity and low residue, a novel series of anthranilic acid esters containing N‐pyridylpyrazole were designed and synthesized. All of the compounds were characterized and confirmed by IR, 1H NMR, MS and elemental analysis. The single crystal structure of 14d was determined by X‐ray diffraction. The bioassay tests showed that the synthesized compounds exhibited good insecticidal activities against Mythimna separata Walker and Culex pipiens pallens.