20.500.12556/RUL-136962 Reusable Pd-polyHIPE for Suzuki–Miyaura coupling Palladium was immobilized on a highly porous copolymer of 4-vinylpyridine and divinylbenzene (polyHIPE─poly(high internal phase emulsion)) using palladium(II) acetate to obtain PolyPy-Pd with 6.1 wt % or 0.57 mmol Pd/g. The immobilized catalyst was able to catalyze the coupling of iodobenzene and phenylboronic acid in ethylene glycol monomethyl ether/water (3:1) within 4 h at rt and complete conversion was observed when 2.5 mol % of Pd per PhI was used. The reaction tolerated a wide range of substituents on the aromatic ring. Iodobenzene derivatives with electron-withdrawing substituents showed higher reactivity, while the opposite was true for the phenylboronic acid series. The polyHIPE-supported Pd catalyst was also used for the direct conversion of phenylboronic acid to biphenyl through an iodination/coupling reaction sequence. The recyclability of the heterogeneous catalyst was also optimized, and by finding a suitable combination of solvents for the loading of Pd, the reaction, and the isolation of the product, the solid-supported catalyst was completely regenerated and used in the next reaction with the same activity. palladium mixtures catalysts solvents polymers paladij mešanice kataliza polimeri true false true Angleški jezik Slovenski jezik Članek v reviji 2022-05-26 14:22:03 2022-05-26 14:22:03 2022-09-24 04:12:16 0000-00-00 00:00:00 2022 0 0 Str. 12610-12616 iss. 15 Vol. 7 Apr. 2022 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 66.02 2470-1343 10.1021/acsomega.1c06318 104201731 acsomega.1c06318_Reusable_Pd-PolyHIPE_for_Suzuki-Miyaura_Coupling.pdf acsomega.1c06318_Reusable_Pd-PolyHIPE_for_Suzuki-Miyaura_Coupling.pdf 1 14F7AB5D1E24F6CFE3D518CCD90DCE1F 44e8e382c53cc5abfc366b96887f3844137d8a91f578a0975056bb04f3a7364a 8b7ddc98-3b26-11ed-9c94-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=162052 https://pubs.acs.org/doi/10.1021/acsomega.1c06318 0 9c0bebb2-dcf0-11ec-8aca-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=156792 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0