Magnetic ethylene-based periodic mesoporous organosilica supported palladium: An efficient and recoverable nanocatalyst for Suzuki reaction

Abstract

In the present study, a novel magnetic ethylene-based periodic mesoporous organosilica supported Pd-Schiff base complex (Fe3O4@PMO/SB-Pd) was prepared, characterized and applied as a recoverable nanocatalyst for green synthesis of Suzuki products. Chemical composition, magnetic and thermal behavior, morphology and particle size of Fe3O4@PMO/SB-Pd were investigated by using FT-IR, TGA, EDX, VSM, PXRD, TEM and Scanning electron microscopy (SEM) analyses. The Fe3O4@PMO/SB-Pd nanocomposite was applied as an efficient nanocatalyst in the Suzuki reaction under ultrasonic conditions giving corresponding products in high yield. Some advantages of this study are simple purification of products, the use of water solvent, easy catalyst separation, short reaction time and high catalyst efficiency and recoverability.

Water compatible silica supported iron trifluoroacetate and trichloroacetate: as prominent and recyclable Lewis acid catalysts for solvent-free green synthesis of hexahydroquinoline-3-carboxamides

“…These catalysts include lanthanide triates, rare earth metal triates, transition metal triates, triuoroacetic acid or trichloroacetic acid, iron tri-uoromethanesulfonate, iron triuoroacetate, lanthanum tri-uoroacetate and lanthanum trichloroacetate. [14][15][16][17][18][19] Additionally, many mesoporous nano organosilica materials were utilized in different organic transformations which includes Pdcontaining IL-based ordered nanostructured organosilica, 20 a Pd-containing magnetic periodic mesoporous organosilica nanocomposite, 21 a Cu-containing magnetic yolk-shell structured ionic liquid based organosilica nanocomposite, 22 highly ordered mesoporous organosilica-titania with an ionic liquid framework, 23 copper/IL-containing magnetic nanoporous MCM-41, 24 core-shell structured Fe 3 O 4 @SiO 2 -supported IL/ [Mo 6 O 19 ], 25 an ionic liquid/Mn complex immobilized on phenylene based periodic mesoporous organosilica, 26 phenylene and isatin based bifunctional mesoporous organosilica supported Schiff-base/manganese complexes, 27 aminefunctionalized ionic liquid-based mesoporous organosilica, 28 magnetic ethylene-based periodic mesoporous organosilica supported palladium, 29 phenylene-based periodic mesoporous organosilica supported melamine, 30 a magnetic silica nanocomposite supported W 6 O 19 /amine, 31 phenyl and ionic liquid based bifunctional periodic mesoporous organosilica supported copper, 32 magnetic silica supported propylamine/ H 3 PW 12 O 40 . 33 The green Lewis acids are highly efficient chemo, regio and stereoselective catalysts for widespread series of organic reactions including Diels-Alder reaction, aldol condensation, Friedel-Cras alkylation, and acylation reaction, Baylis-Hillman reaction, radical addition, Michael reactions, Mannich reaction, alkene alkylation and dimerization, heterocyclic molecule synthesis, Reformatsky reaction, aromatic nitration, sulphonation and bromination reactions, rearrangement reactions, and many multicomponent, cyclization and ring-opening reactions.…”

Yolk-shell structured magnetic mesoporous organosilica supported ionic liquid/Cu complex: an efficient nanocatalyst for the green synthesis of pyranopyrazoles

“…Periodic mesoporous organosilica (PMOs), a desirable class of organic-inorganic composite materials with great properties such as high surface area, high lipophilicity, and high thermal and mechanical stability, have emerged as an ideal support (Wang et al, 2015;Yu et al, 2019;Norouzi et al, 2020;Neysi and Elhamifar, 2023). In particular, bifunctional PMOs (BPMOs), which contain organic functionalities on both the mesoporous walls and channels, are highly attractive for catalytic processes On the other hand, ionic liquids (ILs) have attracted tremendous attention in chemistry and materials science in the last decade owing to their unique characteristics, such as low vapor pressure, high chemical and thermal stability, and their capability to dissolve a variety of compounds.…”