Palladium acetate supported on amidoxime-functionalized magnetic cellulose: Synthesis, DFT study and application in Suzuki reaction

Recent Developments in the Immobilization of Palladium Complexes on Renewable Polysaccharides for Suzuki–Miyaura Cross-Coupling of Halobenzenes and Phenylboronic Acids

“…Lasri et al [111] also used chitosan as support, in this case using the amine group on the polymer as the anchoring point via coordination to the palladium. Their approach, however, involved first the FTIR spectra confirmed the conversion of the cyano groups to amidoxime groups, the presence of Pd(OAc) 2 , and the presence of Fe-O in Fe 3 O 4 @cell-Amidoxime-Pd(OAc) 2 [110]. The XRD diffraction peaks indicated that Fe 3 O 4 magnetic nanoparticles were present mainly in the cubic structure, and the HRTEM images of the Fe 3 O 4 @cell-Amidoxime-Pd(OAc) 2 nanocomposite indicate that it is nearly in composite structures.…”

“…Sabaqian et al proposed a different approach, in which the catalysts could be separated at the end of the reaction by magnetic force (Figure 12). Thus, a magnetically retrievable catalytic system involving Pd(II) acetate supported on an amidoxime-functionalized cellulose nano-magnetic catalyst (nano-Fe 3 O 4 @AOFC/Pd(II)) was prepared [110]. The catalyst was prepared in four stages (Figure 12): (1) 2-chloroacetonitrile in isopropanol was added by drops to an aqueous solution of cellulose with NaOH and stirred to form cyanomethyl cellulose that was separated by filtration, rinsed three times with 70% ethanol, and dehydrated with absolute alcohol; (2) conversion of the nitrile group to an amidoxime group, yielding amidoxime functionalized cellulose (AOFC), by addition of hydroxylamine hydrochloride (NH 2 OH.…”

“…Adapted from ref. [110] with permission from Elsevier. FTIR spectra confirmed the conversion of the cyano groups to amidoxime groups, the presence of Pd(OAc)2, and the presence of Fe-O in Fe3O4@cell-Amidoxime-Pd(OAc)2 [110].…”

Magnetic apple seed starch functionalized with 2,2′‐furil as a green host for cobalt nanoparticles: Highly active and reusable catalyst for Mizoroki–Heck and the Suzuki–Miyaura reactions

“…Biological macromolecular biopolymers are noteworthy candidates to prospect for supported catalysis because of their unbeatable attributes, such as being chemically stable, renewable, and more eco‐friendly comparisons with commercial materials . Polysaccharides are the most abundant and common renewable biopolymers, which can be used to reduce global dependence on fossil fuels and replace synthetic polymers . From another point of view, given the increasing consumption of energy and products in the world, one of the most useful ways is to use waste materials in line with the principles of green chemistry.…”

Insightful understanding of the correlations of the microstructure and catalytic performances of Pd@chitosan membrane catalysts studied by positron annihilation spectroscopy

“…However, the inorganic carries oen need modication to further improve their chelating ability with transition metal catalysts. Recently, more and more attentions has been paid to bio-polymeric supports, which have strong chelating ability with transition metals for the containing of numerous polar groups on the macromolecule backbone, especially carbohydrate polymers, such as starch, 22,23 cellulose, [24][25][26] alginate, 27,28 and chitosan, [29][30][31][32][33] etc. Among them, chitosan (CS), deacetylated products of chitin, is considered to be one of the most promising transition metal catalysts supports for its high chelating ability with the transition metals (containing plenty of amino-groups and hydroxyl groups on the macromolecule backbone) and easy-tailoring of processing into different forms including membranes, microspheres, and nanobers, etc.…”