Highly Selective Hydrogenation with Ionic Liquid Stabilized Nickel Nanoparticles

Zhang, Sishi; Sun, Baoguo

doi:10.1007/s10562-018-2361-0

Cited by 24 publications

(19 citation statements)

References 34 publications

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“…The catalytic reduction of functional groups (alkene, carbonyl, imine, nitro, etc.) in the side chains of aromatic substrates has attracted considerable attention in the past decade for the production of aromatic structures in the chemical industry, and especially in commodities, fine chemicals, agrochemicals, and pharmaceuticals. − The selective hydrogenation of bicyclic heteroaromatic compounds (quinolines, indoles, benzopyrans, benzofurans, etc.) is especially attractive because of the presence of these motifs in various natural products, bioactive molecules, and pharmaceuticals. − ,, Whereas the catalytic hydrogenation of N-containing bicyclic heteroaromatics has been widely studied, ,,− the development of catalysts able to efficiently and selectively hydrogenate O-containing heteroaromatics remains a challenge. − ,,, Methods providing access to the dihydrobenzofuran motifs are however highly desirable, as these structures are key building blocks for the production of molecules possessing antioxidant, − antibacterial, , anti-inflammatory, , and cytotoxic ,, activities (Scheme ).…”

Section: Introductionmentioning

confidence: 99%

Selective Hydrogenation of Benzofurans Using Ruthenium Nanoparticles in Lewis Acid-Modified Ruthenium-Supported Ionic Liquid Phases

et al. 2020

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Ruthenium nanoparticles immobilized on a Lewisacid-functionalized supported ionic liquid phase (Ru@SILP-LA) act as effective catalysts for the selective hydrogenation of benzofuran derivatives to dihydrobenzofurans. The individual components (nanoparticles, chlorozincate-based Lewis-acid, ionic liquid, support) of the catalytic system are assembled using a molecular approach to bring metal and acid sites in close contact on the support material, allowing the hydrogenation of Ocontaining heteroaromatic rings while keeping the aromaticity of C6-rings intact. The chlorozincate species were identified to be predominantly [ZnCl 4 ] 2− anions using X-ray photoelectron spectroscopy and are in close interaction with the metal nanoparticles. The Ru@SILP-[ZnCl 4 ] 2− catalyst exhibited high activity, selectivity, and stability for the catalytic hydrogenation of a variety of substituted benzofurans, providing easy access to biologically relevant dihydrobenzofuran motifs under continuous flow conditions.

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Section: Introductionmentioning

confidence: 99%

Selective Hydrogenation of Benzofurans Using Ruthenium Nanoparticles in Lewis Acid-Modified Ruthenium-Supported Ionic Liquid Phases

et al. 2020

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“…In modern approaches, stabilizing agents like polymers, quarternary ammonium salts, surfactants, etc., have been used to form a protective layer through electrostatic attraction or coordination stabilization to prevent agglomeration and thereby retaining the activity of metal catalysts. [8][9][10][11][12][13] Bimetallic nanoparticles, as the name suggests, are comprised of two different metals. Their unique properties and varied applications make them appealing to researchers.…”

Section: Introductionmentioning

confidence: 99%

Recent Advances in Hydrogenation Reactions Using Bimetallic Nanocatalysts: A Review

2021

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Hydrogenation reactions have been studied for many decades now and have developed from reactions that appear simple to now being recognized for their many complexities. These reactions are generally catalyzed using monometallic and more recently, with bimetallic nanocatalysts. Hydrogenation plays a vital role in food, chemical, petrochemical, pharmaceuticals, and dye industries to name a few. The hydrogenated products derived from several biomass-based compounds are potential fossil fuels. Such products when employed in daily life, can help conserve natural resources. While hydrogenation of alkynes and alkenes are among the simplest of hydrogenation reactions, the most extensive and elegant manifestation of this reaction is seen in polymerization. Polymers like polythene, polypropylene (plastic) have replaced materials like glass, stainless steel, etc., in making daily use items for the obvious advantages of the former. Purification of alkenes is achieved by partially hydrogenating the respective alkynes present in trace amounts. This serves as an important step in the polymerization process. The presence of nitro group on aromatic rings makes them carcinogenic in nature which harms living organisms. For a safe environment, the elimination or modification of this nitro group becomes imperative. The products of hydrogenation of nitroaromatics and amino aromatics form the basis of pharmaceuticals and dyestuffs. A plethora of bimetallic catalysts have been used to catalyze these hydrogenation reactions. These catalysts are evaluated based on their selectivity and efficiency. This review highlights the recent advancements in the field of hydrogenation of nitro compounds, carbonyl compounds, and unsaturated hydrocarbons catalyzed by bimetallic nanoparticles.

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“…10,18 Ionic liquid stabilized Ni and Pt nanoparticles were also selected as highly efficient catalysts in chemoselective hydrogenation of QLs. [25][26][27] In addition, homogeneous catalysts based on Ir, 28 Ru, 29,30 Mo, 31 Co 32,33 were proposed to hydrogenate quinolines selectively as well.…”

Section: Introductionmentioning

confidence: 99%

Understanding the mechanism of the competitive adsorption in 8-methylquinoline hydrogenation over a Ru catalyst

et al. 2020

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Highly Selective Hydrogenation with Ionic Liquid Stabilized Nickel Nanoparticles

Cited by 24 publications

References 34 publications

Selective Hydrogenation of Benzofurans Using Ruthenium Nanoparticles in Lewis Acid-Modified Ruthenium-Supported Ionic Liquid Phases

Selective Hydrogenation of Benzofurans Using Ruthenium Nanoparticles in Lewis Acid-Modified Ruthenium-Supported Ionic Liquid Phases

Recent Advances in Hydrogenation Reactions Using Bimetallic Nanocatalysts: A Review

Understanding the mechanism of the competitive adsorption in 8-methylquinoline hydrogenation over a Ru catalyst

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