Application of Hammett equation on IR and NMR spectral data of (5-bromothiophen-2-yl) (3-(4-methoxyphenyl)bicyclo[2.2.1]hept-5-en-2-yl)methanones

More than 60% yield of the titled compounds, (5-bromothiophen-2-yl)(3-substituted phenyl) bicyclo[2.2.1]hept-5-en-2-yl)methanones were prepared and examined their purities by literature method. The characteristic infrared spectral frequencies (cm-1) and NMR chemical shifts (ppm) of these ketones were assigned. These spectral data were applied to Hammett equation with Hammett substituent constants for prediction of effects substituent using single and multi-regression analysis. From the results of statistical analysis, the electronic effect of substituents on the spectral data has been studied.