Spectroscopic Study of Tautomerism in Substituted Naphtylidineanilenes

Abstract
New substituted naphtylidineaniline schiff bases were prepared. Their UV-visible spectra were run in different solvents with different polarity ranging from protic, aprotic and non polar. The two bands above 430 nm were assigned to the keto form, their molar extinction coefficient was used to calculate the keto form of those anils of 2-hydroxy-naphthalene-1-carbal-dehyde.