Kinetics of oxidation of reducing sugars by catalytic amount of osmium(VIII) in presence of periodate
作者:Rashmi Tripathi、Santosh K. Upadhyay
DOI:10.1002/kin.20017
日期:2004.8
kinetics of oxidation of some reducing sugars viz. glucose, galactose, fructose, maltose, and lactose by osmium(VIII) in presence of sodium metaperiodate in alkaline medium have been investigated. The reactions are zero order in periodate. The order of reaction in substrate and OH− decreases from unity to zero at higher [substrate] or [OH−], respectively. Rate of oxidation is proportional to [Osmium(VIII)]
一些还原糖的氧化动力学,即。已经研究了在偏高碘酸钠存在下在碱性介质中通过锇(VIII)产生的葡萄糖、半乳糖、果糖、麦芽糖和乳糖。高碘酸盐中的反应是零级的。底物和 OH- 中的反应顺序分别在较高的 [底物] 或 [OH-] 处从统一降低到零。氧化速率与 [Osmium(VIII)] 成正比。锇(Ⅷ)是一种有效的氧化剂,它可以氧化还原糖并自身还原成锇(Ⅵ)。IO4-的作用是从锇(VI)中再生锇(VIII)。还获得了锇(VIII)和还原糖之间形成复合物的证据。© 2004 Wiley Periodicals, Inc. Int J Chem Kinet 36:441–448, 2004。