Harnessing the Power of Imidazolium Ionic Salts for Enhanced Suzuki–Miyaura Coupling Reactions: A Solid‐State Approach

ABSTRACT Recent advancements in modern catalysis have sparked significant interest, particularly with the integration of ionic salts. We successfully synthesized a multicationic bromide ionic salt featuring a mesitylene backbone. This study investigates a novel catalytic system comprising Pd(OAc) 2 in combination with these ionic salts in a molar ratio of 2:20, for solid‐state Suzuki–Miyaura coupling reactions. The catalytic system underwent comprehensive characterization utilizing various analytical techniques, including X‐ray diffraction (XRD), transmission electron microscopy (TEM), and X‐ray photoelectron spectroscopy (XPS). This methodology proves to be an efficient and operationally convenient approach for synthesizing a diverse array of biaryls under mild conditions, achieving excellent yields and turnover numbers (TONs) ranging from 462.35 to 547.05, with turnover frequencies (TOFs) between 21.01 and 51.79 min −1 . Notably, the catalytic system exhibited at least five times recyclability, maintaining good catalytic efficiency.