{(COD)Ru[RNC(H)-C(H)C(Ph)]2} (RMe, Et): The first structurally characterized mononuclear ruthenium complexes with enyl-imino ligands and their relevance in ruthenium catalyzed C-H activation reactions |
| |
Authors: | Linda Schweda |
| |
Affiliation: | Institute of Inorganic and Analytical Chemistry, Friedrich-Schiller-University Jena, August-Bebel-Str. 2, 07743 Jena, Germany |
| |
Abstract: | The reaction of α,β-unsaturated imines with [(1,5-cyclooctadiene)-bis(2-methylallyl)-ruthenium(II)] leads to the formation of mononuclear ruthenium complexes of the general formula {(COD)Ru[RNC(H)-C(H)C(Ph)]2}. In these complexes the imine ligands are deprotonated in β-position with respect to the imine double bond and coordinate as an enyl-imino ligand. In the case of R = Me, Et the corresponding compounds have been characterized by X-ray crystallography. The relevance of these complexes with respect to ruthenium catalyzed C-C coupling reactions of the same α,β-unsaturated imines is demonstrated by the structural analysis of another mononuclear ruthenium complex in which two imine ligands are reductively coupled (R = Cy). [(1,5-Cyclooctadiene)-bis(2-methylallyl)-ruthenium(II)] also turns out to be a highly effective precatalyst in the reaction of the respective imines with carbon monoxide and ethylene to produce heterocyclic compounds. |
| |
Keywords: | Ruthenium Imines C-H activation Catalysis Lactams X-ray |
本文献已被 ScienceDirect 等数据库收录! |
|