Towards the Synthesis of Carbine Complexes of Gold and Copper: New Carbene Complexes

Lithiumthiazoles react by substitution or addition with gold and copper chlorides and subsequent protonation or alkylation affords stable mono-or bis(carbene) complexes. Complications which occur during these syntheses include homoleptic rearrangement, dissociative polymerization and carbon-carbon ligand coupling.