Preparation and Characterization of Palladium Nanoparticles Supported on Phosphinated Poly(Vinyl Alcohol) As New Recyclable Catalyst and Their Application for Heck Cross-coupling Reactions

Green and Efficient Procedure for Suzuki–Miyaura and Mizoroki–Heck Coupling Reactions Using Palladium Catalyst Supported on Phosphine Functionalized ZrO2 NPs (ZrO2@ECP-Pd) as a New Reusable Nanocatalyst

“…The good reusability may be attributed to the strong interaction of Pd nanoparticles with phosphine groups present on the surface of the ZrO 2 NPs, which could efficiently stabilize Pd particles and prevent the aggregation of Pd parti-cles formed during the catalytic reaction. 58,71 The reusability was also confirmed by ICP analysis of reused ZrO 2 @ECP-Pd nanocatalyst, which proved the presence of 0.55 © 10 ¹3 mol g ¹1 of palladium. Moreover, in order to investigate the structure of reused ZrO 2 @ECP-Pd nanocatalyst, the FT-IR analysis of the 6 th reused nanocatalyst was recorded ( Figure 1f ).…”

Phosphinite-functionalized silica and hexagonal mesoporous silica containing palladium nanoparticles in Heck coupling reaction: synthesis, characterization, and catalytic activity

“…30 There are limited reports in the literature on phosphinite ligands immobilized on silica and no report was found for phosphinite ligands immobilized on mesoporous silica. Furthering past studies conducted by the author(s) on Pd catalyst based on phosphinite ligands supported by polymers, 15,16,18,19 the synthesis and characterization of phosphinitefunctionalized silica and hexagonal mesoporous silica containing palladium nanoparticles is reported in this work. These catalysts were explored as heterogeneous catalytic systems in HCR with different substrates.…”

“…The application of phosphinites as heterogeneous systems in coupling reactions is miniscule even though the homogeneous catalytic processes have been thoroughly explored. Examples of heterogeneous systems on organic or inorganic supports are as follows: a set of phosphorus ligands on a polystyrene support, 15 polyacrylamide containing phosphinite ligand supporting palladium nanoparticles, 16 aminophosphinites ligands supported on Wang resin, 17 phosphinated poly(vinyl alcohol), 18 modied Merrield resin containing PCP-pincer ligand, 19 diphenylphosphinite cellulose, 20 silicadiphenylphosphinite (SDPP) ligands 21,22 and phosphine functionalized magnetic nanoparticles. 23 The inuence of these ligands over palladium, providing both stability and increased reactivity, is the key to their effective use in the formation of C-C bonds.…”

Nickel Nanoparticles Supported on Diphenylphosphinated Poly(Vinyl Alcohol-Co-ethylene) as a New Heterogeneous and Recyclable Catalyst for Mizoroki–Heck Reactions

“…This polymer loses the metal easily due to weak interaction between the polymer and the metal, but when a phosphine is inserted into the polymer structure, the capacity of reserve metal on polymer during the reaction was increased dramatically. 24 Accordingly, industrial and laboratory applications of polymer-supported transition metal complexes have been much studied. The nature of the polymer backbone, 25 the functionality and compatibility of a ligand with the metal, the capacity of ligands on the polymer 26 and the nature and extent of the cross-linking agent 27 are some of the parameters that determine the amount of complexation that occurs between polymersupported ligands and metal ions.…”