Chemistry - A European Journal

Cover image for Vol. 20 Issue 37

Editor: Neville Compton, Deputy Editors: Anne Deveson, Elisabeth Roedern

Impact Factor: 5.696

ISI Journal Citation Reports © Ranking: 2013: 22/148 (Chemistry Multidisciplinary)

Online ISSN: 1521-3765

Associated Title(s): Angewandte Chemie International Edition, Chemistry – An Asian Journal, ChemistryOpen, ChemBioChem, ChemCatChem, ChemElectroChem, ChemMedChem, ChemPhysChem, ChemPlusChem, ChemSusChem, European Journal of Inorganic Chemistry, European Journal of Organic Chemistry

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August 27, 2014

Celebrating Young Chemists

Celebrating Young Chemists

Check out the special issue dedicated to young European chemists. This issue has been together to celebrate the past participants of the European Young Chemist Award (EYCA), presented at the first four EuCheMS Congresses, and to highlight the great diversity of research currently being conducted by young chemists from all over the world.

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Recently Published Articles

  1. Sunlight-Driven Copper-Catalyst Activation Applied to Photolatent Click Chemistry

    Rédouane Beniazza, Romain Lambert, Dr. Lydie Harmand, Florian Molton, Dr. Carole Duboc, Sergey Denisov, Dr. Gedeminas Jonusauskas, Nathan D. McClenaghan, Dr. Dominique Lastécouères and Dr. Jean-Marc Vincent

    Article first published online: 29 AUG 2014 | DOI: 10.1002/chem.201404056

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    Sunlight-mediated copper(II) to copper(I) reduction occurs with unprecedented efficiency in complex 1, a photoreduction quantum yield approaching unity being determined in THF. The photogenerated copper(I) species proved highly reactive for the copper-catalyzed azide–alkyne cycloaddition reaction, with the preparative-scale synthesis of unprotected disaccharide 2 conducted under daylight illumination (see scheme).

  2. Revisiting the Bromination of C[BOND]H Bonds with Molecular Bromine by Using a Photo-Microflow System

    Dr. Yoshiyuki Manabe, Yuriko Kitawaki, Masahiro Nagasaki, Prof. Koichi Fukase, Prof. Hiroshi Matsubara, Yoshiko Hino, Prof. Takahide Fukuyama and Prof. Ilhyong Ryu

    Article first published online: 29 AUG 2014 | DOI: 10.1002/chem.201402303

    Thumbnail image of graphical abstract

    Go with the (micro)flow: Photobromination of C[BOND]H bonds by using molecular bromine under microfluidic conditions has been investigated (see scheme). The continuous-flow method suppressed the production of dibrominated compounds and effectively produced the desired monobrominated compounds with high selectivity. Rapid bromination of benzylic substrates containing a photoaffinity azide group was achieved without any decomposition.

  3. Au Photosensitized TiO2 Ultrathin Nanosheets with {001} Exposed Facets

    Chao Hu, Xuan Zhang, Xinshi Li, Dr. Yan Yan, Prof. Guangcheng Xi, Dr. Haifeng Yang and Prof. Hua Bai

    Article first published online: 29 AUG 2014 | DOI: 10.1002/chem.201403428

    Thumbnail image of graphical abstract

    Self-reduction: A general route for the direct growth of metal particles on TiO2 nanosheets with (001) exposed facets by an oxygen-vacancy-driven self-redox reaction is reported. Because there is no need for thermal treatment to remove stabilizing agents, the structure of the nanoparticles can also be retained, preserving the active sites associated with the high activity (see scheme).

  4. (Dibenzoylmethanato)boron Difluoride Derivatives Containing Triphenylamine Moieties: A New Type of Electron-Donor/π-Acceptor System for Dye-Sensitized Solar Cells

    Yosuke Mizuno, Yilihamu Yisilamu, Tomoya Yamaguchi, Dr. Masaaki Tomura, Dr. Takashi Funaki, Dr. Hideki Sugihara and Prof. Dr. Katsuhiko Ono

    Article first published online: 29 AUG 2014 | DOI: 10.1002/chem.201402010

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    Organoboron chromophores: (Dibenzoylmethanato)boron difluoride derivatives containing triphenylamine moieties were synthesized as a new type of electron-donor/π-acceptor system (see scheme). The bipolar structure of these compounds, generated by difluoroboron chelation, led to long-wavelength absorptions in the UV/Vis spectra and reversible oxidation and reduction waves in the cyclic voltammograms. Dye-sensitized solar cells incorporating these compounds exhibited solar-to-electric power conversion efficiencies of 2.7–4.4 %.

  5. Alkali-Metal Ion Catalysis and Inhibition in SNAr Displacement: Relative Stabilization of Ground State and Transition State Determines Catalysis and Inhibition in SNAr Reactivity

    Prof. Ik-Hwan Um, Hyo-Jin Cho, Min-Young Kim and Prof. Erwin Buncel

    Article first published online: 29 AUG 2014 | DOI: 10.1002/chem.201404004

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    Alkali-metal ion catalysis and inhibition in SNAr displacement: The SNAr reaction of aryloxy-2,4-dinitrobenzenes with alkali metal ethoxides proceeds through a stepwise mechanism via a π-complexed transition state. Alkali metal ions catalyze or inhibit SNAr reactivity depending on the relative stabilization of the ground state (GS) and transition state (TS) complexes.