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Maleimide-modified phosphonium ionic liquids: A template towards (multi)task-specific ionic liquids

机译:马来酰亚胺改性的离子液体:(多)任务特定离子液体的模板

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摘要

The synthesis and characterization of several compounds representing a new class of multitask-specific phosphonium ionic liquids that contain a maleimide functionality is reported. The maleimide moiety of the ionic liquid (IL) is shown to undergo Michael-type additions with substrates containing either a thiol or amine moiety, thus, serving as a template to introduce wide structural diversity into the IL. Multitask-specific ILs are accessible by reaction of the maleimide with Michael donors that are capable of serving some function. As a model example to illustrate this concept, a redox active ferrocenyl thiol was incorporated and examined by cyclic voltammetry. Because the maleimide moiety is highly reactive to additions, the task-specific ionic liquids (TSILs) are prepared as the furan-protected Diels-Alder maleimide. The maleimide moiety can then be liberated when required by simple heating.
机译:报道了几种代表一类新的多任务特定phospho离子液体的化合物的合成和表征,其中所述多任务特定phospho离子液体包含马来酰亚胺官能团。离子液体(IL)的马来酰亚胺部分显示出与含有巯基或胺基部分的底物进行迈克尔型加成反应,因此,可作为模板向IL中引入广泛的结构多样性。通过马来酰亚胺与能够发挥某些功能的迈克尔供体的反应,可以获得多任务特异性IL。作为说明该概念的模型实例,掺入了氧化还原活性二茂铁基硫醇并通过循环伏安法进行了检查。因为马来酰亚胺部分对加成物具有高反应性,所以将任务特定的离子液体(TSIL)制备为呋喃保护的Diels-Alder马来酰亚胺。然后在需要时可以通过简单的加热来释放马来酰亚胺部分。

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