Articles with "copper complex" as a keyword



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Environmentally benign approach towards C-S cross-coupling reaction by organo-copper(II) complex.

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Published in 2021 at "Molecular diversity"

DOI: 10.1007/s11030-020-10180-5

Abstract: C-S cross-coupling reaction in water giving an excellent yield of the desired C-S coupled product by using a newly developed Bis[2-(4,5-diphenyl-1H-imidazol-2-yl)-4-nitrophenolato] copper(II) dehydrate complex as catalyst. Although it was the first report of the synthesis… read more here.

Keywords: copper complex; coupling reaction; organo copper; reaction ... See more keywords
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Catalytic aspects of a copper(II) complex: biological oxidase to oxygenase activity

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Published in 2017 at "Journal of Chemical Sciences"

DOI: 10.1007/s12039-017-1379-y

Abstract: A coper(II) complex, $$\hbox {[Cu(dpa)}_{2}\hbox {(OAc)](ClO}_{4})$$[Cu(dpa)2(OAc)](ClO4) (1) [dpa =$$ 2,2^\prime $$2,2′-dipyridylamine; OAc $$=$$= acetate], has been synthesized and crystallographically characterized. X-ray structure analysis revealed that this mononuclear Cu(II) complex crystallizes as a rare class of… read more here.

Keywords: copper complex; geometry; hbox mathrm; hbox ... See more keywords
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Valorization of lignin: antibacterial and catalytic activities of copper complex stabilized on magnetic lignosulfonate for N-formylation of amines under solvent-free conditions

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Published in 2021 at "Biomass Conversion and Biorefinery"

DOI: 10.1007/s13399-021-01841-y

Abstract: In this paper, the synthesis of formamides via N-formylation of amines using magnetic lignosulfonate@4H-1,2,4-triazol-3-amine-copper complex (MLS-TA@Cu) catalyst is reported. The catalyst was prepared via immobilization of the Cu(II) complex on magnetic lignosulfonate (MLS). The catalyst structure… read more here.

Keywords: magnetic lignosulfonate; formylation amines; copper complex; solvent free ... See more keywords
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N-Heterocyclic carbene–copper complex supported on ionic liquid-modified graphene oxide: versatile catalyst for synthesis of (i) 1,2,3-triazole and (ii) propargylamine derivatives

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Published in 2018 at "Journal of the Iranian Chemical Society"

DOI: 10.1007/s13738-018-1435-7

Abstract: A N-heterocyclic carbene–copper complex grafted on graphene oxide with an ionic liquid framework was prepared. The synthesis of (i) 1,2,3-triazole derivatives by ‘Click reaction’ and (ii) propargylamine derivatives by ‘A3 coupling reaction’ in aqueous media… read more here.

Keywords: microscopy; copper complex; carbene copper; spectroscopy ... See more keywords
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Magnetic and electro-catalytic properties of a copper complex with 2-(pyridylmethyl)amino-N,N-bis(2-methylene-4,6-difluorophenol)

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Published in 2017 at "Chinese Chemical Letters"

DOI: 10.1016/j.cclet.2017.03.027

Abstract: Abstract A new material for both magnetic coupling and electrocatalytic hydrogen generation based on a copper complex, [(HL)CuCl-CuCl(HL)]HCl 1 is prepared by the reaction of 2-(pyridylmethyl)amino-N,N-bis(2-methylene-4,6-difluorophenol) (H2L) and CuCl2·2H2O. In solid, complex 1 is built… read more here.

Keywords: bis methylene; copper complex; methylene difluorophenol; pyridylmethyl amino ... See more keywords
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Synthesis, crystal structure and biological evaluation of a new dasatinib copper(II) complex as telomerase inhibitor.

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Published in 2018 at "European journal of medicinal chemistry"

DOI: 10.1016/j.ejmech.2017.10.058

Abstract: A new copper(II) complex of dasatinib (DAS) was synthesized and characterized via ESI-MS, UV-Vis, IR, single-crystal X-ray diffraction analysis, 1H and 13C NMR spectroscopy, and elemental analysis. The composition of the new complex (1) was… read more here.

Keywords: copper complex; copper; telomerase inhibitor; crystal ... See more keywords
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XPS detection of unusual Cu(II) to Cu(I) transition on the surface of complexes with redox-active ligands

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Published in 2020 at "Journal of Electron Spectroscopy and Related Phenomena"

DOI: 10.1016/j.elspec.2019.06.010

Abstract: Abstract Electronic structure of copper complexes with redox-active ligands was studied by XPS. The temperature dependence of the redistribution of electron and spin densities was shown. A low temperature anomaly of magnetic properties of the… read more here.

Keywords: complexes redox; copper complex; active ligands; xps detection ... See more keywords
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A new member of Cu II 8 family: Synthesis, structure and magnetic properties of an octanuclear copper complex with N -tert -butyldiethanolamine

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Published in 2017 at "Inorganica Chimica Acta"

DOI: 10.1016/j.ica.2016.09.036

Abstract: Abstract A highly-nuclear copper complex [CuII8O(tBuDea)5(HtBuDea)Cl2][CuICl2]·2H2O (1) has been prepared in a one-pot reaction of copper chloride with N-tert-butyldiethanolamine in methanol in the open air. The structure of the complex was established by single-crystal X-ray… read more here.

Keywords: copper complex; copper; complex; new member ... See more keywords
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Functionalized polytriazoles on graphene oxide-supported copper(I) complex as an effective reusable catalyst for sonochemical click synthesis of triazoles in aqueous media

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Published in 2017 at "Inorganica Chimica Acta"

DOI: 10.1016/j.ica.2017.06.057

Abstract: Abstract In the present study, a copper complex immobilized on graphene oxide was synthesized as a novel, green, highly efficient and reusable heterogeneous catalyst. Then, the synthesis of β-hydroxy-1,2,3-triazole derivatives were performed by the employment… read more here.

Keywords: graphene oxide; copper complex; functionalized polytriazoles; catalyst ... See more keywords
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A novel tetramer copper(I) complex containing diallylphosphine ligands: Synthesis, characterization and catalytic application in A3-coupling (Aldehyde-Amine-Alkyne) reactions

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Published in 2017 at "Inorganica Chimica Acta"

DOI: 10.1016/j.ica.2017.07.038

Abstract: Abstract A novel tetrameric copper(I) complex containing tert-butyldiallylphosphine ligands, [CuCl{tBu-P(CH2CH = CH2)2}]4 (2), has been synthesized and characterized by structural and spectroscopic methods. X-ray diffraction analysis showed that 2 has a cubane-like solid structure of formula [CuCl{κ1(P)-tBu-P(CH2CH = CH2)2}]4. In… read more here.

Keywords: novel tetramer; copper complex; tetramer copper; copper ... See more keywords
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Four-electron reduction of dioxygen to water by a trinuclear copper complex

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Published in 2017 at "Inorganica Chimica Acta"

DOI: 10.1016/j.ica.2017.11.014

Abstract: Abstract The synthesis and characterization of a trinuclear copper complex 1 involving an amine based ligand system, tateb , are reported. Complex 1 acts as a catalyst for a four-electron four-proton reduction of dioxygen to… read more here.

Keywords: four electron; copper complex; copper; trinuclear copper ... See more keywords