Laccase/2,2,6,6-Tetramethylpiperidinoxyl Radical (TEMPO): An Efficient Catalytic System for Selective Oxidations of Primary Hydroxy and Amino Groups in Aqueous and Biphasic Media
作者:Alba Díaz-Rodríguez、Lía Martínez-Montero、Iván Lavandera、Vicente Gotor、Vicente Gotor-Fernández
DOI:10.1002/adsc.201400260
日期:2014.7.7
radical (TEMPO) catalytic systems enable efficient aerobic oxidations of primary alcohols but they generally show a reduced reactivity in aqueous medium. Herein, we report an oxidative catalytic system composed of Trametes versicolor laccase and TEMPO, which is able to work in buffer solutions at room temperature using ambient air. Although this catalytic system displays great efficiency in aqueous systems
铜盐/ 2,2,6,6-四甲基哌啶氧基自由基(TEMPO)催化系统可实现伯醇的有效好氧氧化,但它们通常在水性介质中显示出降低的反应性。在本文中,我们报告了一种由云芝Trametes漆酶和TEMPO组成的氧化催化系统,该系统能够在室温下使用环境空气在缓冲溶液中工作。尽管此催化体系在水性体系中显示出很高的效率,但是添加甲基叔丁基醚可以降低TEMPO的负载量,还可以提高疏水性化合物的溶解度。这种实用的方法可以促进羟基或氨基的化学选择性好氧氧化,从而产生令人感兴趣的有机衍生物,例如醛,内酯,半乳糖或内酰胺。