A click strategy for the immobilization of palladium nanoparticles onto silica: efficient and recyclable catalysts for carbon-carbon bond formation under mild reaction conditions

作者：Hajipour Abdol R; Abolfathi Parisa; Mohammadsaleh Fatemeh

来源：RSC Advances, 2016, 6(81): 78080-78089.

DOI：10.1039/c6ra11734a

An interesting silica-supported nano-palladium catalyst was successfully prepared through "click" reaction of azide-functionalized silica with methylpropargylimidazolium bromide followed by immobilization of palladium nanoparticles (NPs), in which the click-triazole as an important functional entity acts as both a stable linker and a good chelator. The palladium-NPs are stabilized by synergistic effect of coordination and electrostatic interactions. The as-prepared nanocatalyst was well characterized and found to be highly efficient in Heck and Suzuki-Miyaura coupling in terms of activity and recyclability in aqueous ethanol under phosphine-free and low Pd loading (0.1 mol%) conditions.

• 出版日期2016