Title: A STUDY ON THE TAUTOMERIC EQUILIBRIUM OF HYDRO-XY-OUINOLINE AZO-COMPOUNDS
Abstract: In this work, several kinds of 4-substituted phenyl azo-5-(8-hydroxyquinoline) compounds have been synthesized. The tautomeric equilibrium between the azo type and the hydrazone type of these compounds in different solvents and different acidity has also been studied. The introduction of an electron withdrawing group will facilitate the hydrazone formation. On the contrary, in the case of introduction of. electron-repulsive substitute no effect can be observed.In addition, it was found that under irradiation the main process of the excited state of these compounds is azo-cis/trans isomerization reaction rather than tautomerization.
Publication Year: 1992
Publication Date: 1992-01-01
Language: en
Type: article
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