UiO-66-NH2 metal–organic framework supported palladium/Schiff-base complex as a highly efficient and robust catalyst for the Suzuki reaction

Abstract

The synthesis of C–C bonds is considered one of the most fundamental challenges in both organic chemistry and the chemical industry, as these bonds are essential for the preparation of high-value products. Therefore, it is crucial to develop efficient, cost-effective, and environmentally sustainable methods for C–C bond formation. In this context, herein, a novel Schiff-base/Pd-functionalized Zr-based UiO-66 MOF (UiO-66/SB-Pd) is synthesized through a straightforward post-modification process and utilized as a highly efficient catalyst in the Suzuki C–C coupling reaction. The designed UiO-66/SB-Pd material was characterized by using FT-IR, EDX, PXRD, TGA, N₂ adsorption–desorption and SEM analyses. This catalyst displayed remarkable catalytic performance and stability in the Suzuki coupling reaction, facilitating the synthesis of a wide range of biaryl compounds. The catalyst retained its activity after seven consecutive cycles. Moreover, a leaching test indicated the excellent stability of the Pd active species under the reaction conditions.