Structural Elucidation and Characterization of N-Heterocyclic Salts with Various Anions

TL;DRAbstract

-substituent, sometimes nee-ding the additional step of addition of catalytic HCl for clean salt formation. To the best of our knowledge, it can be difficult to introduce various anions in the early stage of NHC salt syn-thesis; thus, anion exchange reactions of azolium chlorides, which are the most easily obtained, seem an economic and efficient route of preparation. Previous studies on ionic liquids (ILs) demonstrating the variation of the anion and investigating the subsequent change of their character, generally adopted the anion exchange method between imidazolium chloride and alkali or ammonium salts.

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