Acid-base equilibria in Mannich bases assessed by UV absorption spectroscopy

Authors
Przeslawska, M Koll, A Witanowski, M
Citation
M. Przeslawska et al., Acid-base equilibria in Mannich bases assessed by UV absorption spectroscopy, J PHYS ORG, 12(6), 1999, pp. 486-492
Citations number
13
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
JOURNAL OF PHYSICAL ORGANIC CHEMISTRY
ISSN journal
08943230 → ACNP
Volume
12
Issue
6
Year of publication
1999
Pages
486 - 492
Database
ISI
SICI code
0894-3230(199906)12:6<486:AEIMBA>2.0.ZU;2-T
Abstract
Acid-base equilibria in selected o-methylamino-N-dialkylphenols in aqueous solutions an discussed. Analysis of the pH dependence of the UV absorption spectra with application of the multi-channel least-squares procedure allow s the estimation of some microscopic dissociation constants. Results are di scussed on the basis of intramolecular interactions between different subst ituents in phenol rings and protonation of the methylamino groups in amino acids. Copyright (C) 1999 John Wiley & Sons, Ltd.