Solvent-Free Synthesis of Pd-Modified Zeolitic Imidazolate Framework Nanocomposites for Competitive Arylation and Carbon–Carbon Coupling Reactions

Abstract

Over an extended period, identifying effective approaches for achieving versatile arylations has presented a notable synthetic challenge. In our research, we have successfully fabricated nanocomposites of zeolitic imidazole frameworks, specifically Pd-ZIF-8 and Pd-ZIF-67, using an in situ thermal (IST) approach. These compounds have exhibited high catalytic activity as heterogeneous catalysts in carbon–carbon coupling processes mediated by palladium, such as the Suzuki–Miyaura reaction (which involves aryl halides and aryl boronic acids) and the Mizoroki–Heck reaction (which involves aryl halides and olefins). In comparison to previously published research, the IST technique has a number of benefits; these features include the removal of solvents and additives, a low reaction temperature, a single-step process, no need for activation, and the use of the smallest possible precursor ratio (M/L). This accomplishment was realized through the precise control of ligands and additives.