Selective aerobic oxidations by supported ruthenium hydroxide catalysts
Selective aerobic oxidations by supported ruthenium hydroxide catalysts
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DOI：
10.1016/j.cattod.2007.12.026
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发表时间：
2008-03-31
期刊：
影响因子：
5.3
通讯作者：
Yamaguchi, Kazuya
中科院分区：
文献类型：
--
作者：
Mizuno, Noritaka;Yamaguchi, Kazuya
制备简单、价格低廉的负载型氢氧化Ru催化剂能有效地促进各种醇、二醇和胺的有氧氧化反应。各种各样的底物，包括芳香族、脂肪族和杂环族底物，都可以以中等到极好的产率转化为所需的产品，而不需要添加碱和电子/氢转移试剂。这些反应的催化剂本质上是多相的，反应后回收的负载型氢氧化Ru催化剂可以重复使用，催化性能不会有明显的损失。对于目前的催化氧化，提出了一种涉及Ru的烷氧基(酰胺)形成/β消除的反应机理。(C)2007 Elsevier B.V.保留所有权利。
Aerobic oxidations of various alcohols, diols, and amines are efficiently promoted by the easily prepared inexpensive supported ruthenium hydroxide catalysts. A wide variety of substrates including aromatic, aliphatic, and heterocyclic ones can be converted into the desired products in moderate to excellent yields without the need for additives such as bases and electron/hydrogen transfer reagents. The catalysis for these reactions was intrinsically heterogeneous, and supported ruthenium hydroxide catalysts recovered after these reactions could be reused without appreciable loss of the catalytic performances. A reaction mechanism involving ruthenium alkoxide (amide) form ation/beta -elimination has been proposed for the present catalytic oxidations. (C) 2007 Elsevier B.V. All rights reserved.