A series containing ten (E)-4-(N-(4-cinnamoylphenyl)sulfamoyl)-3-(p-tolyl)-1,2,3-oxadiazol-3-ium-5-olates were prepared and examined their purities by literature method. The infrared and NMR spectral data were assigned and correlated with Hammett substituent constants and Swain-Lupton’s constants using single and multi-regression analysis. From the results of statistical analyses the effects of substituents on the spectral data have been discussed.
International Letters of Chemistry, Physics and Astronomy (Volume 53)
G. Thirunarayanan et al., "Spectral LFER Studies on Some Sydnone Chalcones", International Letters of Chemistry, Physics and Astronomy, Vol. 53, pp. 41-53, 2015