Copper Nanoparticles in Ionic Liquid: An Easy and Efficient Catalyst for Selective Carba-Michael Addition Reaction

Singh, Prashant; Kumari, Kamlesh; Katyal, Anju; Kalra, Rashmi; Chandra, Ramesh

doi:10.1007/s10562-008-9654-7

Cited by 39 publications

(18 citation statements)

References 34 publications

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“…[46] This pioneering work has stimulated many subsequent studies. For example, Ir, [77][78][79][80] Rh, [77,81] Pt, [82,83] Ru, [84,85] Pd, [86,87] Ni, [88] Cu, [89][90][91] and Ag [92] nanoparticles were prepared by reducing the corresponding transition metal salts or by decomposing organometallic compounds in ionic liquid media. [72,73] 6 ]} by NaBH 4 .…”

Section: Reviewmentioning

confidence: 99%

Preparation of Inorganic Materials Using Ionic Liquids

2009

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Conventional synthesis of inorganic materials relies heavily on water and organic solvents. Alternatively, the synthesis of inorganic materials using, or in the presence of, ionic liquids represents a burgeoning direction in materials chemistry. Use of ionic liquids in solvent extraction and organic catalysis has been extensively studied, but their use in inorganic synthesis has just begun. Ionic liquids are a family of non-conventional molten salts that can act as templates and precursors to inorganic materials, as well as solvents. They offer many advantages, such as negligible vapor pressures, wide liquidus ranges, good thermal stability, tunable solubility for both organic and inorganic molecules, and much synthetic flexibility. In this Review, the use of ionic liquids in the preparation of several categories of inorganic and hybrid materials (i.e., metal structures, non-metal elements, silicas, organosilicas, metal oxides, metal chalcogenides, metal salts, open-framework structures, ionic liquid-functionalized materials, and supported ionic liquids) is summarized. The status quo of the research field is assessed, and some future perspectives are furnished.

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Section: Reviewmentioning

confidence: 99%

Preparation of Inorganic Materials Using Ionic Liquids

2009

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“…The completion of the reaction was checked by thin layer chromatography (TLC) in mixture of hexane and ethyl acetate (1:9). After completion of the reaction, the solvent was removed under reduced pressure to get the product i.e., cyanoethyl tetrazole acetic acid [1][2][3][4][5][6][7][26][27][28][29][30][31][32]. Then, the obtained compound was taken in acetonitrile (30 mL) and equimolar bromobutane was added to the above solution with stirring.…”

Section: Preparation Of Tetrazolium or Tetrazole Ring Based Ionic Liqmentioning

confidence: 99%

“…Then, the obtained compound was taken in acetonitrile (30 mL) and equimolar bromobutane was added to the above solution with stirring. The above reaction mixture was refluxed for about 3 h. Then, solvent was evaporated under reduced pressure to afford 1-Butyl-5-carboxymethyl-4-(2-cyano-ethyl)-4H-tetrazolium bromide as in Scheme 3 [26][27][28][29][30][31][32] …”

Section: Preparation Of Tetrazolium or Tetrazole Ring Based Ionic Liqmentioning

confidence: 99%

“…Suddenly a yellowish brown color solution was obtained and signifying the silver NPs [26][27][28][29][30][31][32]. Further, stirring was continued for 6 h. Then suspended solution was poured into ethanol and centrifuged at 3000 rpm for 10 min and decanted the supernatant and washed the pallet with ethanol and then the left material was analysed by powder X-ray Diffraction (XRD), Quasi Elastic Light Scattering (QELS), Transmission Electron Microscopy (TEM) and UV-Visible techniques to determine shape, size and oxidation state of Ag nanoparticles (Scheme 5).…”

Section: Synthesis Of Ag Nps In the Synthesized Ionic Liquid (1-butylmentioning

confidence: 99%

See 1 more Smart Citation

Au/Ag NPS Decorated PANI For Electrochemical and Biomedical Applications

Singh¹,

Patel²,

Kumari³

et al. 2017

J Bioequiv Availab

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“…Asymmetric Michael reaction is one of the most powerful tools for constructing stereoselective C-C bond [1][2][3][4][5][6]. However, the approach to complex compounds with quaternary stereocenters is still a challenge for synthetic organic chemists [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Construction of Adjacent Quaternary and Tertiary Stereocenters by Conjugate Addition Using Polymer-Supported Cinchona Alkaloids as Catalysts

Qin

Yang

et al. 2010

Catal Lett

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A series of polymer-bound cinchona alkaloids has been prepared. The resultant polymer-bound cinchona alkaloids have been used as the catalysts for the asymmetric Michael reaction of 1,3-dicarbonyl compounds and N-benzylmaleimide. The corresponding asymmetric Michael addition product, the first example of adjacent quaternary and tertiary stereocenters synthesized in the presence of a polymer-bound catalyst, has a selectivity of up to 86% ee. Besides, immobilized alkaloid V retains stereochemical reactivity even after being recycled for six times.

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Copper Nanoparticles in Ionic Liquid: An Easy and Efficient Catalyst for Selective Carba-Michael Addition Reaction

Abstract: In this paper, we wish to report a novel synthesized copper nanoparticles in an ionic liquid employed as a catalyst for Michael addition between active methylene compound and a, b-unsaturated compounds to give corresponding compounds in excellent yield and in shorter reaction times.

Cited by 39 publications

References 34 publications

Preparation of Inorganic Materials Using Ionic Liquids

Preparation of Inorganic Materials Using Ionic Liquids

Au/Ag NPS Decorated PANI For Electrochemical and Biomedical Applications

Construction of Adjacent Quaternary and Tertiary Stereocenters by Conjugate Addition Using Polymer-Supported Cinchona Alkaloids as Catalysts

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