Abstract
Ionic Liquids (IL) are salts with at least one organic cation. The term “Ionic Liquid” has been restricted to salts with melting point below 100 ° C [1]. In the recent years, (ILs) have gained popularity in science and technology. The large number of possible cation/ anion combinations allows a great variety of tunable interactions; also their unique properties and characteristics make it a promising and an attractive to work with in several fields. However, how ILs are produced? This editorial pretends to make a brief commentary of some of the main methodologies of ILs synthesis. ILs are frequently produced from ammonium, phosphonium or sulphonates ions [2]. There are two main methods of preparing ILs: metathesis and acid base neutralization (Scheme 1). We could also consider another method, for imidazolium cations that was developed by Earl and Seddon: the reaction of imidazole carbenes as strong bases [3]. There are several alkylammonium halides commercially available
Highlights
Ionic Liquids (IL) are salts with at least one organic cation
There are two main methods of preparing ILs: metathesis and acid base neutralization (Scheme 1). We could consider another method, for imidazolium cations that was developed by Earl and Seddon: the reaction of imidazole carbenes as strong bases [3]
When alkylammonium halides are not availabe, a quaternization reaction is required, when an organic halide salt is formed through the alkylation of a base by a haloalkane [4]
Summary
Ionic Liquids (IL) are salts with at least one organic cation. There are two main methods of preparing ILs: metathesis and acid base neutralization (Scheme 1). We could consider another method, for imidazolium cations that was developed by Earl and Seddon: the reaction of imidazole carbenes as strong bases [3]. There are several alkylammonium halides commercially available and they can be used directly in metathesis reactions [4].
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