Synthesis and characterization of KIT-6-supported TI/TG-pd complex: a novel organic-mineral nanocomposite as an efficient and recyclable mesoporous catalyst for the stable CH arylation of benzoazoles

This study presents the innovative design and synthesis of a novel, magnetically recoverable KIT-6@TI/TG-Pd mesoporous nanocomposite. Unlike traditional palladium catalysts, this structure ingeniously incorporates a unique TI/TG-Pd complex within the ordered channels of the KIT-6 mesoporous framework. This results in a synergistic blend of high surface area, exceptional metal dispersion, and magnetic functionality. The structural and physicochemical integrity of the nanocomposite was thoroughly validated using techniques such as Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), energy-dispersive X-ray analysis (EDX), thermogravimetric analysis (TGA), field emission scanning electron microscopy (FE-SEM), Brunauer–Emmett–Teller (BET) surface area analysis, and inductively coupled plasma (ICP) analyses. Proving its superior catalytic potential, the KIT-6@TI/TG-Pd catalyst efficiently facilitated the synthesis of various benzoazole derivatives under notably mild conditions. This catalytic system is distinguished by its rapid reaction kinetics, high product yields, and environmentally friendly profile. Furthermore, the integration of magnetic properties allows for seamless and efficient separation, enabling the catalyst to be reused for up to five consecutive cycles with minimal loss in catalytic efficiency, offering a sustainable solution for advanced organic transformations.