KINETICS AND MECHANISM OF ACID CATALYSIS IN THE MUTAROTATION REACTIONOF N-(P-CHLOROPHENYL)-BETA-D-GLUCOPYRANOSYLAMINE IN METHANOLIC BENZOATE BUFFER SOLUTIONS

Authors
SMIATACZOWA K MAJ K KOREWA R
Citation
K. Smiataczowa et al., KINETICS AND MECHANISM OF ACID CATALYSIS IN THE MUTAROTATION REACTIONOF N-(P-CHLOROPHENYL)-BETA-D-GLUCOPYRANOSYLAMINE IN METHANOLIC BENZOATE BUFFER SOLUTIONS, Polish Journal of Chemistry, 71(6), 1997, pp. 831-839
Citations number
18
Categorie Soggetti
Chemistry
Journal title
Polish Journal of Chemistry → ACNP
ISSN journal
01375083
Volume
71
Issue
6
Year of publication
1997
Pages
831 - 839
Database
ISI
SICI code
0137-5083(1997)71:6<831:KAMOAC>2.0.ZU;2-Z
Abstract
Rate constants of the mutarotation reaction of N-(p-chlorophenyl)-beta -D-glucopyranosylamine have been determined in methanolic benzoate buf fer solutions of various benzoic acid/sodium benzoate molar concentrat ion ratios, at 25 degrees C. The measurements were repeated in solutio ns of the same composition at fixed ionic strength. Catalytic constant s of the hydrogen ions, k(H), and of benzoic acid molecules, k(HA), ha ve been determined. In the pH range of approx. 7 to 10.5, the reaction has been found to obey the general acid catalysis scheme.