Palladium nanoparticles supported on MOF-5: A highly active catalyst for a ligand- and copper-free Sonogashira coupling reaction

Palladium nanoparticles supported on MOF-5 (Pd/MOF-5), have been prepared by a chemical method at room temperature. MOF-5 and Pd/MOF-5 were characterized by X-ray diffraction, N2 sorption, thermogravimetric analysis, scanning electron microscopy, and transmission electron microscopy. The catalyst consists of highly dispersed palladium nanoparticles (about 3–6 nm) on MOF-5 with a high surface area (533 m2/g). It exhibits efficient catalytic activity for the Sonogashira coupling reaction between aryl iodides and terminal acetylenes without the assistance of ligand and copper.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (107 K)Download as PowerPoint slideResearch highlights▶ Efficient heterogeneous catalyst for the Sonogashira reactions was prepared. ▶ MOF-5 and Pd/MOF-5 were fully characterized. ▶ Pd/MOF-5 is active for the reactions of aryl iodides and terminal acetylenes. ▶ A medium yield was obtained for the reaction of bromobenzene and phenylacetylene.