Kinetics and mechanism of oxidation monosaccharides by sodium-N-bromobenzenesulphonamide in alkaline medium

Iyengar, T. A. and Mahadevappa, D. S. (1992) Kinetics and mechanism of oxidation monosaccharides by sodium-N-bromobenzenesulphonamide in alkaline medium. Indian Journal of Chemistry Section A-Inorganic Bio-Inorganic Physical Theoretical & Analytical Chemistry, 31 (11). pp. 838-844.

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Abstract

Kinetic studies of the oxidation Of D-fructose, D-glucose, D-galactose, D-mannose, D-xylose, D-ribose, D-lyxose and L-arabinose by bromamine-B (sodium-N-bromobenzene sulphonamide, BAB) have been carried out in alkaline medium at 30-degrees. The reaction shows a zero order dependence on BAB]0 and fractional orders in sugar]0 and HO-]0. The rates tend to level off at higher sugar]0 and HO-]0. Variation in ionic strength of the medium, and the addition of benzene sulphonamide, Cl- and Br- ions do not alter the rate while lowering the dielectric constant of the medium increases the rate slightly. Solvent isotope and proton-inventory studies have been made. Enolization rate coefficients and activation parameters for the rate limiting step have been determined from Michaelis-Menten type of plots. A probable scheme for the oxidation of monosaccharides through a common intermediate, 1,2-enediol has been proposed.

Item Type:	Article
Subjects:	C Chemical Science > Chemistry
Divisions:	Department of > Chemistry
Depositing User:	Users 23 not found.
Date Deposited:	18 May 2021 07:27
Last Modified:	07 Jan 2023 05:58
URI:	http://eprints.uni-mysore.ac.in/id/eprint/16409

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