Abstract
In this article, series of semicarbazide, thiosemicarbazide, urea and thiourea derivatives have been successfully prepared via an easy synthetic strategy. The chemical structure of the prepared compounds have been confirmed based upon spectral and elemental data. The compounds showed excellent insecticidal activity against Spodoptera littoralis which causes a harmful damage to the cotton crop which represent a principal figure in economics of North Africa countries. Among all the prepared compounds, methyl-4-{[(4-chlorobenzoyl)carbamothioyl] amino}benzoate 7 showed the highest insecticidal activity against S. littoralis, with LC50 values of 9.882 for 2nd instar larvae & 102.66 for 4th instar larvae, respectively.Graphical abstract
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