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Open AccessArticle

Syntheses and Structural Studies of Schiff Bases Involving Hydrogen Bonds

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Departamento de Química Orgánica y Bio-Orgánica, Facultad de Ciencias, UNED, Senda del Rey 9, E-28040 Madrid, Spain
2
Instituto de Química Médica (CSIC), Centro de Química Orgánica 'Manuel Lora Tamayo', Juan de la Cierva 3, E-28006 Madrid, Spain
*
Authors to whom correspondence should be addressed.
Molecules 2006, 11(6), 453-463; https://doi.org/10.3390/11060453
Received: 7 June 2006 / Revised: 20 June 2006 / Accepted: 20 June 2006 / Published: 21 June 2006
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. View Full-Text
Keywords: Schiff bases; Tautomerism; Hydrogen bonds; NMR spectroscopy; Density functional calculations. Schiff bases; Tautomerism; Hydrogen bonds; NMR spectroscopy; Density functional calculations.
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MDPI and ACS Style

Perona, A.; Sanz, D.; Claramunt, R.M.; Elguero, J. Syntheses and Structural Studies of Schiff Bases Involving Hydrogen Bonds. Molecules 2006, 11, 453-463.

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