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14,761 Newest Publications about the topic copper


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Copper-Catalyzed Cyclization of 2-Cyanobenzaldehydes and 2-Isocyanoacetates: an Efficient Strategy for the Synthesis of Substituted 1-Aminoisoquinolines

03-Jul-2018 | Wen Bao; Jun-Qi Wang; Xuetao Xu; Bang-Hong Zhang; Wei-Ting Liu; Lin-Sheng Lei; Huan Liang; Kun Zhang; Shao-Hua Wang, Chemical Communication, 2018

A Cu(acac)2-catalyzed cyclization reaction of 2-cyanobenzaldehydes with 2-isocyanoacetates has been successfully developed providing an efficient strategy for the synthesis of substituted 1-aminoisoquinoline. The reaction proceeds smoothly under mild conditions with high efficiency, and might ...


Precursor-mediated synthesis of Cu2−xSe nanoparticles and their composites with TiO2 for improved photocatalysis

03-Jul-2018 | Sweta Gahlot; Erwann Jeanneau; Frederic Dappozze; Chantal Guillard; Shashank Mishra, Dalton Transactions, 2018

The direct synthesis of copper selenide nanoparticles from the reaction of ditertiarybutyl selenide tBu2Se with copper(ii) trifluoroacetate Cu(TFA)2 under mild conditions is reported. The isolation of a molecular species during the course of this reaction, established as [Cu2(TFA)2(tBu2Se)3], by ...


A bifunctional cationic metal–organic framework based on unprecedented nonanuclear copper(II) cluster for high dichromate and chromate trapping and highly efficient photocatalytic degradation of organic dyes under visible light irradiation

03-Jul-2018 | Tian-Rui Zheng; Lin-Lu Qian; Min Li; Zhi-Xiang Wang; Ke Li; Ya-Qian Zhang; Bao-Long Li; Bing Wu, Dalton Transactions, 2018

A bifunctional cationic metal–organic framework {[Cu9(OH)6Cl2(itp)6(1,4-bdc)3](NO3)2(OH)2·20H2O}n (1-NO3-OH·20H2O) was synthesized and characterized (itp = 1-imidazol-1-yl-3-(1,2,4-triazol-4-yl)propane, 1,4-bdc = 1,4-benzenedicarboxylate). In 1-NO3-OH·20H2O, three [Cu3(μ3-OH)(μ2-OH)] trimeric ...


Room Temperature Synthesis of Aqueous Soluble Covellite CuS Nanocrystals with High Photothermal Conversion

03-Jul-2018 | Yi XIE; Wenhui Chen; Chao Hu; Tao Zeng; Huirong Jiang; Fen Qiao; Jiani Gu; Xunyi Dong; Xiujian Zhao, CrystEngComm, 2018

Near-infrared plasmonic binary copper-based chalcogenides have found promising applications in photovoltaics and photothermal therapy. Here, we report a facile synthetic protocol for aqueous soluble covellite (CuS) nanocrystals (NCs) at room temperature. In contrast to previously reported routes, ...


An efficient copper catalyzed 3D mesoporous aluminosilicate for the synthesis of dibenzodiazonines in Ullmann cross-coupling reaction

03-Jul-2018 | Udayakumar Veerabagu; Gowsika udayakumar; Arumugam Pandurangan; Sabarathinam Shanmugam; Lu Fushen, New Journal of Chemistry, 2018

A series of copper oxide with different weight percentages such as 2%, 4% & 6% supported on three dimensional mesoporous aluminosilicates have been prepared by hydrothermal method, the effects of loading amount on the support, interactions of components and surface properties were systematically ...


Tetranuclear and dinuclear phenoxido bridged copper complexes based on unsymmetrical thiosemicarbazone ligands

03-Jul-2018 | Catherine Belle; James Alfred Isaac; Ali Taher Mansour; Rolf David; Amelie Kochem; Christian Philouze; Serhiy Demesh ..., Dalton Transactions, 2018

We report on the synthesis of new dinucleating phenol-based “end-off” compartmental ligands HLMeH and HLMe2 bearing two different binding sites, one bis(2-methylpyridyl)aminomethyl (BPA) and one thiosemicarbazone (TSC) site, and their corresponding copper(II) complexes 1t and 2d. With the ligand ...


Predictability of the onset of spiking and bursting in complex chemical reactions

03-Jul-2018 | Marcus W. Beims; Jason A. C. Gallas, Physical Chemistry Chemical Physics, 2018

For three complex chemical reactions displaying intricate dynamics, we assess the effectiveness of a recently proposed quantitative method to forecast bursting and large spikes, i.e. extreme events. Specifically, we consider predicting extreme events in (i) a copper dissolution model where ...


Synthesis, photophysical, antibacterial and larvicidal studies on triazolophanes with 5-nitro isophthalate functionality at the intraannular position

03-Jul-2018 | Sivasamy Selvarani; Perumal Rajakumar; Subramani Nagaraj; Manisha Choudhury; Devadasan Velmurugan, New Journal of Chemistry, 2018

1 : 1 and 2 : 2 oligomeric triazolophanes with 5-nitro isophthalate and triazolyl functionalities at the intraannular position have been synthesized by copper(i) catalyzed 1,3 dipolar cycloaddition of the corresponding propargylic esters with various phenyl substituted aliphatic azides under mild ...


Copper-catalyzed oxidative cross-dehydrogenative coupling of 2H-chromenes and terminal alkynes

03-Jul-2018 | Fei Yang; Yangshan Li; Paul E. Floreancig; Xiaoyan Li; Lei Liu, Organic & Biomolecular Chemistry, 2018

An efficient copper-catalyzed cross-dehydrogenative coupling of 2H-chromenes and terminal alkynes mediated by DDQ has been established. A protic additive, EtOH, proved to be crucial for harmonizing the oxidation with a subsequent alkynylation step by retaining the oxidation state of an ...


Single ion sandwich-type polyoxomolybdates based on Strandberg anions and their electrocatalytic properties

01-Jul-2018 | Author(s): Ming Xu, Fengyan Li, Ting Wang, Lin Xu, Inorganic Chemistry Communications, 2018

Publication date: August 2018 Source:Inorganic Chemistry Communications, Volume 94 Author(s): Ming Xu, Fengyan Li, Ting Wang, Lin Xu Two new single ion sandwich-type polyoxometalate compounds built on Strandberg-type anions and divalent transition metal cations, ...


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