Oxidation of thiol compounds by molecular oxygen in aqueous solutions
Oxidation of thiol compounds by molecular oxygen in aqueous solutions
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DOI：
10.1023/a:1024761324710
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发表时间：
2003-05-01
影响因子：
1.7
通讯作者：
Ufimtsev, AV
中科院分区：
文献类型：
--
作者：
Bagiyan, GA;Koroleva, IK;Ufimtsev, AV
研究了硫醇的侧自氧化反应。在中性和碱性溶液中，这些反应是由变价金属杂质引起的。过渡金属催化硫醇氧化的能力在Cu > Mn > Fe b> Ni的顺序上比Co大得多。自氧化速率随pH值的变化曲线经过一个最大值，其在pH标度上的位置取决于金属的性质和被氧化硫醇的结构。对于不同结构的硫醇，铜离子催化反应的动力学顺序随pH的变化而不同，这显然与形成具有不同催化活性的配合物有关。
Side self-oxidation of thiols was studied. It was found that these reactions in neutral and alkaline solutions are induced by impurities of variable-valence metals. The ability of transition metals to catalyze oxidation of thiols changes in the order Cu > Mn > Fe > Ni much greater than Co. The plot of the self-oxidation rate vs. pH passes through a maximum whose position on the pH scale depends on both the nature of metal and the structure of the thiol oxidized. For thiols having different structures, the kinetic orders in reactions catalyzed by copper ions differently vary with pH, which is apparently associated with the formation of complexes possessing different catalyti activity.