| abstract |
A process for preparing cyclometalated transition metal-carbene complexes containing at least one carbene ligand, comprising the reaction of a ligand precursor with a base, an auxiliary reagent and a metal complex comprising at least one metal M<SUP>1</SUP> (route A) or the reaction of the ligand precursor with a basic auxiliary reagent and a metal complex containing at least one metal M<SUP>1</SUP> (route B). The present invention further relates to the use of an auxiliary reagent selected from salts containing at least one metal selected from the group consisting of Ag, Hg, Sb, Mg, B and Al together with a base in a process for preparing cyclometalated metal complexes. |