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7568374 
Journal Article 
KINETICS AND MECHANISM OF OXIDATION OF MONOSACCHARIDES BY SODIUM-N-BROMOBENZENESULFONAMIDE IN ALKALINE-MEDIUM 
Iyengar, TA; Mahadevappa, DS 
1992 
1 
Indian Journal of Chemistry. Section A
ISSN: 0376-4710
EISSN: 0975-0975 
31 
11 
838-844 
WOS:A1992JV60000005 
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.