Synthesis, characterization of Pd Schiff base immobilized on MCM-۴۱ and its catalytic application

The present work describes the use of palladium-vanillin complex immobilized on MCM-۴۱ nanostructure for the Suzuki-Miyaura reactions of aryl iodides and bromides under aerobic conditions. The all reactions were carried out in green solvents. The ligand together with its Pd (۰) complex is easily separated by filtration and reused for several runs. This method brings several benefits such as inexpensive and non-toxic ligand (vanillin), easy catalyst-/product separation, easy work-up, short reaction times, and catalyst recycling. The catalyst can be readily recovered and reused at least for ۵ consecutive cycles without a significant loss of its catalytic activity or metal leaching.

Keywords:

MCM-۴۱ , Mesoporous , Suzuki-Miyaura , Schiff base complex , Vanillin