Pd Nanoparticles Dispersed on Zr^IV Organophosphonate: A Robust and Reusable Catalyst for Suzuki–Miyaura Cross‐Coupling Reactions

Summary

A mesoporous zirconium(IV) phosphonate was synthesized by the hydrothermal reaction of ZrOCl 2 · 8H 2 O with a trisphosphonic acid ligand, mesityl‐1,3,5‐tris(methylenephosphonic acid). Treatment of the mesoporous Zr IV phosphonate framework with Pd(OAc) 2 and subsequent reduction produced a nanocomposite where Pd nanoparticles of average size ca. 7–8 nm were found to be homogeneously and abundantly dispersed over the phosphonate framework. The composite acts as an efficient and reusable heterogeneous catalyst in the Suzuki–Miyaura cross coupling reaction of aryl bromides with aryl boronic acids.