Chemistry - A European Journal
Copyright © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Editor: Neville Compton, Deputy Editors: Anne Deveson, Elisabeth Roedern
Impact Factor: 5.831
ISI Journal Citation Reports © Ranking: 2012: 21/152 (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
May 23, 2014
New Multichromophoric Ligand for Light Harvesting
Light-harvesting antennae are of great importance for the development of efficient solar cells. Multichromophoric systems capable of harvesting light are of interest as they can be used in multicomponent systems in which the different chromophores are in close contact to favor energy and/or electron transfer, so that the excitation energy can be funneled to a specific acceptor. If one of these chromophores is also a good ligand for metal ions, new interesting properties can arise in a supramolecular system, such as control of the energy/electron transfer processes by changing the metal ion or the ability to generate supramolecular architectures and coordination polymers. To find out more about this subject read the paper by Marc Gingras, Aix-Marseille Université, France, Giacomo Bergamini, University of Bologna, Italy, and co-workers.
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Recently Published Articles
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Article first published online: 22 JUL 2014 | DOI: 10.1002/chem.201403357
One thing leads to another: Amide allylation of various isatin substrates with NH-containing stannylated reagents resulted in extremely high yields and enantioselectivities of variously substituted homoallylic alcohols, thereby allowing convenient access to chiral 2-oxindoles spiro-fused to the α-methylene-γ-butyrolactone functionality and their halogenated derivatives in almost enantiopure forms (see scheme).
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Article first published online: 22 JUL 2014 | DOI: 10.1002/chem.201403021
CH “Clicked”: A one-pot protocol for the synthesis of N-aryl 1,2,3-triazoles from arenes by an iridium-catalyzed CH borylation/copper-catalyzed azidation/click sequence is described. Cu(OTf)2 (1 mol %) was found to efficiently catalyze both the azidation and the click reaction. The applicability of this method is demonstrated by the late-stage chemoselective installation of 1,2,3-triazole moiety into unactivated complex molecules of pharmaceutical importance (see scheme, cod=1,5-cyclooctadiene, Pin=pinacolato).
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High five! The organocatalytic enantioselective syntheses of functionalized hydroisochromenes and chromenes by trienamine-mediated [4+2]-cycloaddition/nucleophilic ring-closing and iminium-ion/aminal-mediated oxa-Michael/Michael/nucleophilic ring-closing with 2-nitroallylic alcohols are presented. The corresponding cycloadducts, with up to five stereocenters, are formed in good yield and excellent enantioselectivities.