%0 Journal Article
%T Synthesis of Some New Anils: Part 1. Reaction of 2-Hydroxy-benzaldehyde and 2-Hydroxynaphthaldehyde with 2-Aminopyridene and 2-Aminopyrazine
%A Abdullah M. Asiri
%A Khadija O. Badahdah
%J Molecules
%D 2007
%I MDPI AG
%R 10.3390/12081796
%X New Schiff bases derived from 2-aminopyridene and 2-aminopyrazine have been synthesized. The UV-Visible spectra of the compounds have been investigated in acetonitrile and toluene. The compounds were in tautomeric equilibrium (enol-imine O¨C H¡¤¡¤¡¤N, keto-amine O¡¤¡¤¡¤H¨CN forms) in polar and nonpolar solvents. For some derivatives the keto-amine form was observed in both toluene and acetonitrile. 1H-NMR and IR results showed that all Schiff bases studied favor the enol-imine form over the keto form in a weakly polar solvent such as deuterochloroform.
%K Schiff base
%K Tautomerism
%K Keto-enamine
%K Enol-imine
%K Solvent effect
%U http://www.mdpi.com/1420-3049/12/8/1796