| 초록 |
γ-Aluminium oxide supported Palladium(II)-N-heterocyclic carbene (Pd-NHC) complex is one of the effective catalyst for Suzuki-Myaura reaction in water dominant environment. NHCs are stable ligands in aqueous conditions so they have been used for spectator ligands of Suzuki-Myaura cross-coupling catalyst. γ-Aluminium oxide, as solid support, is known for its hydrophilicity and structural stability but it has not been fully studied for Suzuki-Myaura reaction. In this research, two kinds of 1-substituted imidazoles were synthesized as precursors of NHCs, and Pd-NHC complexes were prepared using Pd(OAc)2 and these precursors. Finally, the Pd-NHC complexes were immobilized on aluminium oxide. The catalytic activity was tested in various solvents and basic conditions. In conclusion, aluminium oxide supported Pd-NHC catalysts were prepared, characterized and their catalytic activity was observed. |
