A novel Palladium-2-picolylamine Complex Grafted on Magnetic UiO-66-NH2 nanocomposites: As an efficient Heterogeneous catalyst for Fast Suzuki–Miyaura Cross Coupling

Abstract

This study reports the facile hydrothermal synthesis of a novel Fe3O4@UiO-66-NH₂ magnetic metal-organic framework (MOF) nanocomposite, bypassing the need for additional surface functionalization of Fe3O4. This amine-functionalized magnetic MOF serves as an efficient and porous support for the covalent immobilization of a palladium–2-picolylamine catalytic complex. The palladium magnetic catalyst exhibits exceptional catalytic activity in Suzuki cross-coupling reactions between diverse aryl halides and phenylboronic acid in high to excellent yields over short reaction times and under environmentally friendly conditions. A key advantage of this catalyst is its facile magnetic recovery and excellent reusability for at least five consecutive cycles with negligible loss in activity. Furthermore, comprehensive heterogeneity testing confirms the robust stability of the catalyst, highlighting its potential for sustainable and efficient catalytic applications.