N-heterocyclic carbene catalyzed c-h activation

N-Heterocyclic carbenes (NHCs) and transition metal complexes from derivatived reactive carbenes have been known to be outstanding ligands for a variety of organometallic complexes for 30 years. These compounds have been used in C-C coupling reactions, olefin metathesis, hydrosilylation, hydroformylation and activation of C-H as catalysts. The NHC precursors and their complexes have showed high catalytic activity in biaryl synthesis by C-H activation reactions. These products have found many uses in pharmaceutics, polymer, ionic liquid and ionic crystal and that increased the demand. For this reason bezhydryl substituted carbene and transition metal complexes have been prepared in this work.