Synthesis and Physical Properties of Tunable Aryl Alkyl Ionic Liquids (TAAILs)
作者:Swantje Lerch、Thomas Strassner
DOI:10.1002/chem.202102545
日期:2021.11.5
Tunablearylalkylionicliquids (TAAILs) based on the imidazolium cation were first reported in 2009. Since then, a series of TAAILs with different properties due to the electron-donating or -withdrawing effect of the substituents at the aryl ring has been developed. Herein, a wide variety of those ionicliquids (ILs) is presented in terms of their cation structure. The authors synthesized ILs containing
2009 年首次报道了基于咪唑鎓阳离子的可调谐芳烷基离子液体 (TAAIL)。此后,由于芳环上取代基的给电子或吸电子作用,开发了一系列具有不同性质的 TAAIL。在本文中,根据它们的阳离子结构呈现了多种这些离子液体 (IL)。作者合成了含有溴化物或双(三氟甲烷)磺酰亚胺阴离子和 1-芳基-3-烷基咪唑鎓阳离子的离子液体,在苯环的邻位和/或对位具有各种取代基以及不同长度的烷基链,从丁基到十二烷基不等. 根据它们的结构报告了这些 IL 的物理性质(熔点、热分解、粘度、电化学窗口)的差异。
coordinating tetrakis((1,1,1,3,3,3‐hexafluoropropan‐2‐yl)oxy)borate [B(hfip)4]−anions to study the physical properties and viscosities of these ionicliquids. Despite the large size and high molecular weight of these readily available ILs, they are liquid at room temperature and show remarkably low glass transition points and relatively high decomposition temperatures.
Friedel–Crafts acylation of benzene derivatives in tunable aryl alkyl ionic liquids (TAAILs)
作者:Swantje Lerch、Stefan Fritsch、Thomas Strassner
DOI:10.3762/bjoc.19.20
日期:——
An iron(III) chloride hexahydrate-catalyzed Friedel–Crafts acylation of benzene derivatives in tunablearylalkylionicliquids (TAAILs) has been developed. Through optimization of the metal salt, reaction conditions and ionicliquids, we were able to design a robust catalyst system that tolerates different electron-rich substrates under ambient atmosphere and allows for a multigram scale.