On the Chemical Stabilities of Ionic Liquids
Top Cited Papers
Open Access
- 24 September 2009
- Vol. 14 (9), 3780-3813
- https://doi.org/10.3390/molecules14093780
Abstract
Ionic liquids are novel solvents of interest as greener alternatives to conventional organic solvents aimed at facilitating sustainable chemistry. As a consequence of their unusual physical properties, reusability, and eco-friendly nature, ionic liquids have attracted the attention of organic chemists. Numerous reports have revealed that many catalysts and reagents were supported in the ionic liquid phase, resulting in enhanced reactivity and selectivity in various important reaction transformations. However, synthetic chemists cannot ignore the stability data and intermolecular interactions, or even reactions that are directly applicable to organic reactions in ionic liquids. It is becoming evident from the increasing number of reports on use of ionic liquids as solvents, catalysts, and reagents in organic synthesis that they are not totally inert under many reaction conditions. While in some cases, their unexpected reactivity has proven fortuitous and in others, it is imperative that when selecting an ionic liquid for a particular synthetic application, attention must be paid to its compatibility with the reaction conditions. Even though, more than 200 room temperature ionic liquids are known, only a few reports have commented their effects on reaction mechanisms or rate/stability. Therefore, rather than attempting to give a comprehensive overview of ionic liquid chemistry, this review focuses on the non-innocent nature of ionic liquids, with a decided emphasis to clearly illuminate the ability of ionic liquids to affect the mechanistic aspects of some organic reactions thereby affecting and promoting the yield and selectivity.Keywords
This publication has 145 references indexed in Scilit:
- Limited thermal stability of imidazolium and pyrrolidinium ionic liquidsThermochimica Acta, 2009
- Review of ionic liquids with fluorine-containing anionsJournal of Fluorine Chemistry, 2006
- IONIC LIQUIDS IN ORGANIC SYNTHESISPublished by American Chemical Society (ACS) ,2004
- Comparison of different advanced oxidation processes for the degradation of room temperature ionic liquidsJournal of Photochemistry and Photobiology A: Chemistry, 2004
- Aromatic nitrations in ionic liquids: the importance of cation choiceChemical Communications, 2003
- Ionic LiquidsClean Technologies and Environmental Policy, 1999
- Thermal decomposition of tetraalkyl ammonium tetrafluoroboratesThermochimica Acta, 1997
- Thermal characterization of tetramethylphosphonium perchlorate, -nitrate and -picrateThermochimica Acta, 1974
- Acid-Base Equilibria in Acetonitrile. Spectrophotometric and Conductometric Determination of the Dissociation of Various Acids1Journal of the American Chemical Society, 1961
- Correlation of Relative Rates and Equilibria with a Double Basicity ScaleJournal of the American Chemical Society, 1954