تأثير المذيبات و المعوضات على ثوابت توازن توتومرية الايمينات المشتقة من 2-هايدروكسي-1- نفثال الدهايد

Abstract EN

The study is concerned with the influence of non polar solvents as DCE and DCM and polar solvents as ethanol and acetone on tautomerism reaction process of type enol keto in eight different imines structures prepared by the reactions of 2- hydroxy-1-napthyl aldehyde with an appropriate primary amines.

Three different empirical parameters for solvent polarity are used as ET N, μ10 -30 cm and ET(30) Kcal / mole -1, beside their influence on tautomerism process in imines under study.

Finally, the study comes to a conclusion that the equilibrium constant value of tautomerism reaction is largely depend on the structure or type of substituent of imines and the type pf solvent used through out the study.

The last is supported by the appearance of a very good linear plot from Hammett equation when applied to imines and discussed.