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2011

Synthesis, spectral, electrochemical and antimicrobial studies of some 2-pyrrolyl chalcones

Author:D. Kamalakkannan, G. Vanangamudi, R. Arulkumaran, K. Thirumurthy, P. Mayavel and G. Thirunarayanan

Abstract:
A series containing twele substituted styryl 2-pyrrolyl ketones have been synthesized by solvent free fly-ash:H2SO4 solid acid catalysed crossed aldol condensation. These chalcones were characterized by their physical constants and spectral data. The IR and NMR spectral frequencies of Î½COs-cis and s-trans, deformation modes of Î½CHip, op, CH=CHop and C=Cop(cm-1), Î´H and Î´C of Î±, Î² and CO(ppm) and the electrochemical reduction potential and currents of carbonyl and vinyl groups of synthesized chalcones were correlated with Hammett substituent constants, F and R parameters. From the results of statistical analyses the effects of substituents on the group frequencies and electrochemical functionalities have been discussed. The antimicrobial activities of all chalcones have been studied using Bauer-Kirby method.â€©