MECHANISM OF RUTHENIUM TETROXIDE-CATALYZED OXIDATION OF ALDOSES BY ALKALINE NORMAL-BROMOACETAMIDE

被引：25

作者：

SINGH, AK ^{[1
]}

SINGH, A ^{[1
]}

GUPTA, R ^{[1
]}

SAXENA, M ^{[1
]}

SINGH, B ^{[1
]}

机构：

[1] UNIV ALLAHABAD,DEPT CHEM,ALLAHABAD 211002,UTTAR PRADESH,INDIA

来源：

TRANSITION METAL CHEMISTRY | 1992年 / 17卷 / 05期

关键词：

D O I：

10.1007/BF02910720

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The kinetics of oxidation of three aldoses (glucose, mannose and galactose) by N-bromoacetamide (NBA) in the presence of an alkaline solution of RuO4 as catalyst and Hg(OAC)2 as co-catalyst and as a scavenger for bromide have been investigated. The main products of the oxidation are the corresponding aldonic acids. The reaction is zero order with respect to aldose and OH-. First order dependence of the reaction on both NBA and RuO4 at low concentrations shifts to zero order at higher concentrations. Addition of acetamide decreases the reaction rate, while addition of Hg(OAC)2 has the opposite effect. No significant effect of ionic strength was observed. OBr- is postulated as the reactive oxidising species and a mechanism involving co-catalysis by RuO4 and Hg(II) is proposed.

引用

页码：413 / 416

页数：4

共 17 条

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