Heterogeneous Fe3O4@chitosan-Schiff base Pd nanocatalyst: Fabrication, characterization and application as highly efficient and magnetically-recoverable catalyst for Suzuki–Miyaura and Heck–Mizoroki C–C coupling reactions

Synthesis of Fe 3 O 4 @SiO 2 @OSi(CH 2 ) 3 NHRN(CH 2 PPh 2 ) 2 PdCl 2 type nanocomposite complexes: Highly efficient and magnetically-recoverable catalysts in vitamin K 3 synthesis

“…Due to providing the excellent properties of magnetic nano-particles such as, synthesis and functionalization easily, excellent interaction features between reactants and active sites of the catalysts for the reactions, good stability, having high surface area, low toxicity, low production price, easily supporting of various ligands to the surface of Fe 3 O 4 magnetic nano-particles, easily synthesis of their metal complexes and investigating their applications, the synthesis and functionalization of magnetic nano-particles have been attracted nowadays (Naghipour, & Fakhri, 2016;Zhang et al, 2013;Zhu et al, 2013;Sharma & Monga, 2014;Zhang et al, 2010;Long et al, 2016). Additionally, SiO 2 coated nano-particles have great advantages because of silica surface provides unique chemically and physically stability in severe chemical and physical conditions in the applications (Guo et al, 2006).…”

Pd nanoparticles immobilized on magnetic chitosan as a novel reusable catalyst for green Heck and Suzuki cross‐coupling reaction: In water at room temperature

“…For the Heck reactions, in spite of rarity of using chitosan palladium catalyst, a few reports are available . For example, in 2011, Smith et al used 6‐deoxy‐6‐aminochitosan‐supported Pd (II) catalysts in Suzuki and Heck cross‐coupling reactions in xylene and aqueous ethanol solvents during long reaction time at extremely high temperature (130 °C) .…”

Valorization of Oceanic Waste Biomass: A Catalytic Perspective

“…In a similar approach, Fe 3 O 4 particles were embedded in Pd supported on chitosan Schiff base which were catalytically effective for Suzuki‐Miyaura and Mizoroki‐Heck reactions and also facilitated the separation from the reaction crude. Ideal yield (99 %) was obtained for the respective products under the optimized conditions with a good catalyst recyclability for both the coupling reactions …”

“…Ideal yield (99 %) was obtained for the respective products under the optimized conditions with a good catalyst recyclability for both the coupling reactions. [38] Researchers attempted the immobilization of Pd on modified/functionalized chitosan ( Figure 2). Salicylaldehyde was grafted on chitosan to give chitosan Schiff base which was treated with Li 2 PdCl 4 in methanol to give imine palladacycle complex ( Figure 2A) which was tested for Heck reaction giving stereoselectivity for arylation of conjugated alkenes with aryl halides (99 % yield).…”