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3 International Letters of Chemistry, Physics and Astronomy

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Insect antifeedant potent quinoxalines

Lakshmanan K., Sekar K. G., Sathiyendiran V., Muthuvel I.

International Letters of Chemistry, Physics and Astronomy

2015

Vol. 41

82--87

Some 6-substituted aryl quinoxalines have been prepared and their purities were checked by their physical constants and spectroscopic data reported earlier. The insect antifeedant activities of these quinolones were studied by leaf-discs bio assay method using 4th instar larvae Achoea Janata L.

Effect of Substituents on Phenazine Derivatives by Spectral Studies

Thirunarayanan G., Muthuvel I., Sathiyendiran V.

International Letters of Chemistry, Physics and Astronomy

2015

Vol. 48

114--122

A series of eleven substituted dipyrido[3,2-a; 2′,3′-c]phenazine derivatives have been synthesized and examined their purities by literature method. The infrared and 13C NMR spectral data of prepared phenazines were correlated with Hammett substituent constants, F and R parameters using single and multi-regression analysis. From the results of statistical analysis, the effect of substituents on the infrared frequencies (ν, cm-1) and 13C nmr chemical shifts(δ, ppm) has been studied.

Structure parameter correlation of some quinoxaline derivatives through IR and 13C NMR spectra

Thirunarayanan G., Muthuvel I., Sathiyendiran V.

International Letters of Chemistry, Physics and Astronomy

2014

Vol. 19, iss. 2

198--207

A series of 6-substituted quanoxaline derivatives have been synthesized and examined their purities by literature method. The infrared and 13>/Sup>C NMR spectral data of these quinoxalines were correlated with Hammett substituent constants, F and R parameters using single and multi-regression analysis. From the results of statistical analysis, the effect of substituents on the spectral frequencies has been studied.