A series of novel N '-tert-butyl-N '-3,5-dimethylbenzoyl-N-aryloxyoxalyl-N-4-ethylbenzoyl hydrazines containing a carboxylic acid or ester substituent on the aryl were synthesized, and their larvicidal activities were evaluated. The results of bioassays indicated that some of these title compounds exhibit higher larvicidal activities than RH5849 (N-tert-butyl-N,N '-dibenzoylhydrazine), but they are not good compared to the parent compound (tebufenozide). The carboxylic acid substituent on the aryl was essential for high larvicidal activity. Compared to the parent compound, these derivatives displayed different physical properties, for example, better solubility in organic solvents. Toxicity assays indicated that these derivatives could induce a premature, abnormal, and lethal larval molt.
Ferrocene carboxylic acid was reacted with DCC in tetrahydrofuran at room temperature to give N,N′-dicyclohexyl-Oferrocenoylisourea, which can be converted to N,N′-dicyclohexyl-N-ferrocenoylurea in dioxane at reflux temperature.
Disclosed herein is a photosensitizer-free strategy for the direct C-H difluoroalkylation of quinoxalinones and hydrazones with bromodifluoroacylarenes via visible-light-promoted Csp3-Br bond homolytic pathway. This new reaction provides the access to...
A series of new N-sulfenylated derivatives of diacylhydrazines were synthesised and evaluated for moulting hormone mimicking activity, and the results of bioassay showed that the title compounds exhibit excellent larvicidal activities, and toxicity assays indicated that the title compounds can induce a premature, abnormal and lethal larval moult.
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