Syntheses and Structural Studies of Schiff Bases Involving Hydrogen Bonds

Syntheses and Structural Studies of Schiff Bases Involving Hydrogen Bonds

New Schiff bases have been prepared by reacting 3-hydroxy-4-pyridine- carboxaldehyde with various amines. NMR spectroscopic methods provided clear evidence that the Schiff bases exist in the solid state and in solution as hydroxyimino tautomers with the E-configuration. A study of the stabilities of...

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Bibliographic Details
Main Authors: José Elguero, Rosa M. Claramunt, Dionisia Sanz, Almudena Perona
Format: Article
Language:English
Published: MDPI AG 2006-06-01
Series:Molecules
Subjects:
Schiff bases
Tautomerism
Hydrogen bonds
NMR spectroscopy
Density functional calculations.
Online Access:http://www.mdpi.com/1420-3049/11/6/453/
Description
Summary:New Schiff bases have been prepared by reacting 3-hydroxy-4-pyridine- carboxaldehyde with various amines. NMR spectroscopic methods provided clear evidence that the Schiff bases exist in the solid state and in solution as hydroxyimino tautomers with the E-configuration. A study of the stabilities of the tautomeric forms and the different conformers has been carried out using density functional calculations at the B3LYP/6-31G** level.
ISSN:1420-3049

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