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Ionic Liquids in Selective Oxidation: Catalysts and Solvents
Chemical Reviews ( IF 51.4 ) Pub Date : 2017-05-01 00:00:00 , DOI: 10.1021/acs.chemrev.7b00030
Chengna Dai 1 , Jie Zhang 1 , Chongpin Huang 1 , Zhigang Lei 1
Affiliation  

Selective oxidation has an important role in environmental and green chemistry (e.g., oxidative desulfurization of fuels and oxidative removal of mercury) as well as chemicals and intermediates chemistry to obtain high-value-added special products (e.g., organic sulfoxides and sulfones, aldehydes, ketones, carboxylic acids, epoxides, esters, and lactones). Due to their unique physical properties such as the nonvolatility, thermal stability, nonexplosion, high polarity, and temperature-dependent miscibility with water, ionic liquids (ILs) have attracted considerable attention as reaction solvents and media for selective oxidations and are considered as green alternatives to volatile organic solvents. Moreover, for easy separation and recyclable utilization, IL catalysts have attracted unprecedented attention as “biphasic catalyst” or “immobilized catalyst” by immobilizing metal- or nonmetal-containing ILs onto mineral or polymer supports to combine the unique properties of ILs (chemical and thermal stability, capacity for extraction of polar substrates and reaction products) with the extended surface of the supports. This review highlights the most recent outcomes on ILs in several important typical oxidation reactions. The contents are arranged in the series of oxidation of sulfides, oxidation of alcohols, epoxidation of alkenes, Baeyer–Villiger oxidation reaction, oxidation of alkanes, and oxidation of other compounds step by step involving ILs as solvents, catalysts, reagents, or their combinations.

中文翻译:

选择性氧化中的离子液体:催化剂和溶剂

选择性氧化在环境和绿色化学(例如燃料的氧化脱硫和汞的氧化去除)以及化学和中间体化学中,获得高附加值的特殊产品(例如有机亚砜和砜,醛,酮,羧酸,环氧化物,酯和内酯)。由于离子液体(ILs)具有独特的物理特性,例如不挥发,热稳定性,不爆炸,高极性以及与温度相关的与水混溶性,因此作为反应溶剂和选择性氧化介质已引起了广泛关注,并被视为绿色替代品挥发性有机溶剂。此外,为了易于分离和可回收利用,IL催化剂通过将含金属或非金属的ILs固定在矿物或聚合物载体上,结合了ILs的独特性能(化学和热稳定性,极性底物的萃取能力和吸附性能)而吸引了空前的关注,成为“双相催化剂”或“固定化催化剂”。反应产物)与支撑物的延伸表面。这篇综述着重介绍了几种重要的典型氧化反应中有关白介素的最新成果。内容物以硫化物的氧化,醇的氧化,烯烃的环氧化,Baeyer-Villiger氧化反应,烷烃的氧化以及其他化合物的氧化的顺序排列,涉及以ILs作为溶剂,催化剂,试剂或其组合。
更新日期:2017-05-01
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