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Synthesis and spectral studies of some (E)-N-(substituted benzylidene)-4-methylbenzenesulfonamides

Sekar KG and Thirunarayanan G

A series of some (E)-N-(substituted benzylidene)-4-methylbenzenesulfonamides have been synthesised using solid SiO2-H3PO4 catalyst under solvent free conditions in microwave irradiation. The synthesised (E)-N-tosylimine purities have been verified by their physical constants and spectroscopic data. The spectral frequencies are correlated with Hammett substituent constants, F and R parameters using linear regression analysis. From the results of statistical analysis the effect of substituents on the group frequencies will be discussed.