Synthesis, characterization and catalytic application of a novel polyethylene-supported Fe/ionic liquid complex

Elhamifar, Davar; Elhamifar, Dawood; Shojaeipoor, Frood

doi:10.1016/j.molcata.2016.11.015

Cited by 23 publications

(4 citation statements)

References 61 publications

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“…In 2017, Elhamifar and co-workers prepared and applied polyethylene-supported ionic liquid/iron complex (PEt@Fe/ IL, Table 1) as catalyst in synthesis of DHPMs under solvent free conditions. 46 First, the ionic liquid methyl-octyl-imidazolium bromide ([MOIM][Br]) was prepared from N-methylimidazole and octyl-bromide in toluene. Iron acetate was then added into this ionic liquid with stirring at room temperature to afford the ionic liquid/iron (Fe/IL) complex.…”

Section: Acs Combinatorial Sciencementioning

confidence: 99%

Biginelli Reaction: Polymer Supported Catalytic Approaches

et al. 2019

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The Biginelli product, dihydropyrimidinone (DHPM) core, and its derivatives are of immense biological importance. There are several methods reported as modifications to the original Biginelli reaction. Among them, many involve the use of different catalysts. Also, among the advancements that have been made to the Biginelli reaction, improvements in product yields, less hazardous reaction conditions, and simplified isolation of products from the reaction predominate. Recently, solid-phase synthetic protocols have attracted the research community for improved yields, simplified product purification, recyclability of the solid support, which forms a special economic approach for Biginelli reaction. The present Review highlights the role of polymer-supported catalysts in Biginelli reaction, which may involve organic, inorganic, or hybrid polymers as support for catalysts. A few of the schemes involve magnetically recoverable catalysts where work up provides green approach relative to traditional methods. Some research groups used polymer−catalyst nanocomposites and polymer-supported ionic liquids as catalyst. Solvent-free, an ultrasound or microwave-assisted Biginelli reactions with polymer-supported catalysts are also reported.

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Section: Acs Combinatorial Sciencementioning

confidence: 99%

Biginelli Reaction: Polymer Supported Catalytic Approaches

et al. 2019

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“…Another work based on manganese-containing periodic mesoporous organo silica with ionic-liquid framework (Mn@PMO/IL) in the A 3 -coupling reaction was investigated by D. Elhamifar and co-workers. [39] Transition metal oxide shows enormous prospective in many important organic transformations due to their controlled shape, size, stability, a non toxic, crystallinity and functionality, corrosion resistance, easily scalable, relatively cost effective and non-hygroscopic property, making it as a proficient catalyst. In past few decades, rGO/ZnO nanocomposites have been explored in various fields such as electrochemical capacitors, [40] adsorbents for pollutants and removal of RhB dye from water, [41] photocatalysts and manufacture of organic photovoltaics.…”

Section: Introductionmentioning

confidence: 99%

ZnO Nanoparticles Embedded on a Reduced Graphene Oxide Nanosheet (ZnO−NPs@r‐GO) as a Proficient Heterogeneous Catalyst for a One‐Pot A³‐Coupling Reaction

et al. 2021

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This study reports a simple and facile route for the synthesis of ZnO nanoparticles (ZnOÀ NPs) decorated on reduced graphene oxide nanosheet (ZnOÀ NPs@r-GO) as a heterogeneous catalyst and tested over multicomponent one-pot A 3 -coupling reaction. The reduction of graphene oxide with the anchoring of ZnOÀ NPs on the r-GO nanosheet was observed through the Xray diffraction patterns, Raman, FTIR, and XPS results of the ZnOÀ NPs@r-GO sample. ZnOÀ NPs (average particle size of 3.4 � 1.5 nm) with uniform size distribution over r-GO nanosheet were substantiated through HRTEM analysis. Impressively, ZnOÀ NPs@r-GO significantly used for A 3 -coupling reaction with different aromatic aldehydes, active methylene compounds, and urea and under the optimized reaction conditions gave exceptional activity to produce synthetically valuable 3,4dihydropyrimidinones products (possessing diverse therapeutic and pharmacological properties) i. e. 97 % isolated yield of the product. In addition, excellent reusability up to 4 repeated cycles are the key advantages of the present catalyst used for this multicomponent A 3 -coupling reaction.

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“…According to aforementioned subjects, in continuous of our recent studies and due to the importance of supported catalytic systems in chemical processes, [44][45][46][47][48][49][50][51][52][53][54][55][56][57][58][59] herein for the first time a novel magnetic mesoporous MCM-41 type silica supported ionic liquid/palladium complex [Fe 3 O 4 @MCM@IL/Pd] with core-shell structure has been designed, prepared and characterized and its catalytic application was developed in the one-pot synthesis of pyrano [2,3-d]pyrimidine derivatives under green conditions (Scheme 1).…”

Section: Introductionmentioning

confidence: 99%

Magnetic nanoporous MCM‐41 supported ionic liquid/palladium complex: An efficient nanocatalyst with high recoverability

Abaeezadeh

Elhamifar

Norouzi

et al. 2019

Applied Organom Chemis

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In this study, a novel magnetic mesoporous MCM-41 silica supported ionic liquid/palladium complex (Fe 3 O 4 @MCM@IL/Pd) with core-structure was prepared and characterized and its catalytic performance was developed under green conditions. The Fe 3 O 4 @MCM@IL/Pd was prepared via a post grafting method and was characterized using Fourier transform infrared spectroscopy, thermal gravimetric analysis, wide-and low-angle powder X-ray diffraction, scanning electron microscopy, transmission electron microscopy, vibration sample magnetometer and energy-dispersive X-ray analyses. This was applied as an efficient and recoverable nanocatalyst for the one-pot synthesis of pyrano [2,3-d]pyrimidine derivatives under ultrasonic conditions. The catalyst was magnetically recovered and reused for 12 consecutive cycles without significant loss of its activity and selectivity.

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Synthesis, characterization and catalytic application of a novel polyethylene-supported Fe/ionic liquid complex

Cited by 23 publications

References 61 publications

Biginelli Reaction: Polymer Supported Catalytic Approaches

Biginelli Reaction: Polymer Supported Catalytic Approaches

ZnO Nanoparticles Embedded on a Reduced Graphene Oxide Nanosheet (ZnO−NPs@r‐GO) as a Proficient Heterogeneous Catalyst for a One‐Pot A³‐Coupling Reaction

Magnetic nanoporous MCM‐41 supported ionic liquid/palladium complex: An efficient nanocatalyst with high recoverability

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Synthesis, characterization and catalytic application of a novel polyethylene-supported Fe/ionic liquid complex

Cited by 23 publications

References 61 publications

Biginelli Reaction: Polymer Supported Catalytic Approaches

Biginelli Reaction: Polymer Supported Catalytic Approaches

ZnO Nanoparticles Embedded on a Reduced Graphene Oxide Nanosheet (ZnO−NPs@r‐GO) as a Proficient Heterogeneous Catalyst for a One‐Pot A3‐Coupling Reaction

Magnetic nanoporous MCM‐41 supported ionic liquid/palladium complex: An efficient nanocatalyst with high recoverability

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ZnO Nanoparticles Embedded on a Reduced Graphene Oxide Nanosheet (ZnO−NPs@r‐GO) as a Proficient Heterogeneous Catalyst for a One‐Pot A³‐Coupling Reaction