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VOL. 6, ISSUE 6 (2021)
Synthesis, insecticidal assessments of some new heterocyclic compounds containing azobenzene moiety against the phytophagous pest, Egyptian cotton leafworm, Spodoptera littoralis (Boisd.)
Authors
Kaiwan Omer Rashid
Abstract
2-Cyano-N-(4-(phenyl diazenyl) phenyl) acetamide was a key intermediate for the synthesis of innovative heterocyclic compounds such as thiazoles, thiophenes, and pyrazoles incorporating azobenzene moiety. The structures of the newly synthesized compounds were elucidated by IR, MS and 1H NMR spectral analysis. Toxicological aspects of the demonstrative compounds of the synthesized products against the cotton leafworm, Spodoptera littoralis under laboratory conditions were investigated. Regarding the determined LC50 and LC90 values, azobenzenes bearing amide moiety 16, 17, 6a, 8a and 7 showed the most potent toxic effects with LC50 values of 24.995, 31.291, 45.048, 64.739 and 82.248 ppm, respectively, and toxicity index being 53.75, 42.94, 29.83, 20.76 and 16.34%, respectively, comparing with the commercial already known, carbamate insecticide, lannate 90% SP which was the most effective compound (the lowest LC50 value, 13.435 ppm, toxicity index, 100%).
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Pages:133-141
How to cite this article:
Kaiwan Omer Rashid "Synthesis, insecticidal assessments of some new heterocyclic compounds containing azobenzene moiety against the phytophagous pest, Egyptian cotton leafworm, <em>Spodoptera littoralis</em> (Boisd.) ". International Journal of Entomology Research, Vol 6, Issue 6, 2021, Pages 133-141
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