Tags: Chemical Compound, Chemical Substance.
IMes is an abbreviation for organic compound that is a common ligand in organometallic chemistry. It is an N-heterocyclic carbene (NHC). The compound a white solid is often not isolated but instead is generated upon attachment to the metal centre.First prepared by Arduengo the heterocycle is synthesized by condensation of 246-trimethylaniline and glyoxal to give the diimine. In the presence of acid this diimine condenses with formaldehyde to give the dimesitylimidazolium cation.
