SYNTHESIS OF 1,3 DISUBSTITUTED IMIDAZOLIUM SALTS

摘要

Imidazolium salts are the immediate precursors to N-heterocyclic carbenes (NHC) yet a simple, general synthetic route to a wide variety of imidazolium salts is not yet available. Such a straightforward route is described for two specific members of this family of ligand precursor: l,3-Bis(2,4,6-trimethylphenyl)imidazolium chloride (IMes-HCl) and l,3-Bis(2,6-diispropylphenyl)imidazolium chloride (IPrHCl). The procedure appears general and similar protocols can be used to isolate various imidazolium salts.