Dicationic ionic liquids are emerging group of ionic liquids (ILs) that are currently receiving much attention as green reaction media and catalysts. Because of a great number of possible combinations of cations and anions, the physical and chemical properties of dicationic ionic liquids are more tunable and broader than monocationic ILs. Therefore, their unique properties have made them the target of many applied and fundamental researches. Actually, dicationic ionic liquids are more effective and rather fascinating than traditional monocationic ILs. So, due to greater versatility and diversity, their applications in organic synthesis have been extensively grown. In this review we are focusing on the synthesis, characterization and applications of dicationic ionic liquids, especially, in organic synthesis.
Keywords: Dicationic ionic liquids, Task-specific ionic liquids, Room-temperature ionic liquids, Protic ionic liquids, Chiral ionic liquids, Toxicity of ionic liquids
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