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Progress in the application of pyrazoles in pesticides

Progress in the application of pyrazoles in pesticides

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The n-pyrazoline is a kind of nitrogen-containing five-membered heterocyclic compound, and its chemical structure often has other functional groups such as an aromatic ring and a hetero atom. Due to its extensive and important role in the field of pesticides, it has long been the focus of many people in the industry. As early as the late 19th century, Fischer et al. synthesized a pyrazoline compound from acrolein and phenylhydrazine. After a long period of time, α,β-ketene (aldehyde) compounds were synthesized with terpenoids. Many pyrazoline derivatives. In recent years, with the application of many new technologies and methods to the synthesis of pyrazoline compounds, many new pyrazoline compounds have appeared in pesticides and have produced good results. Herbicide