离子液体中手性催化剂回收研究

近年来,贵重的手性催化剂的回收与再利用越来越引起化学工作者的关注,而离子液体在催化剂回收方面有其独特的优势.本文综述了离子液体在手性催化反应中的应用,在回收催化剂的同时,也能一定程度上提高催化剂的催化效率:着重介绍了新型含咪唑盐手性催化剂及其在不对称催化中的应用,由于它在离子液体和有机溶剂的显著差异可以很容易地得到回收,并且能一定程度地稳定催化剂,提高催化效率,这对我们设计合成新型可回收的催化剂具有重要的借鉴意义.

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Recently, more and more chemists are concerned about the recycle and reuse of expensive transition metal catalysts. Ionic liquid has unique advantages in recycling catalysts. This article reviews the application of ehiral catalyst reactions in ionic liquids, which can not only recycle and reuse catalysts, but also improve the efficiencies of catalysts. In addition, novel irnidazolium contained ehiral catalysts and their applications in asymmetry catalytic reactions are summarized in detail. Because of their distinct solubilities in ionic liquids and organic solvents, they can be easily recycled and reused, and they can also enhance the stability of catalysts, improve the efficiencies of catalysts, which give us a guidance to design and synthesize novel recyclable catalysts.