ChemCatChem

Cover image for Vol. 7 Issue 9

Early View (Online Version of Record published before inclusion in an issue)

Editor: Michael Rowan; Editorial Board Chairs: Uwe Bornscheuer, Luis A. Oro, Bert Weckhuysen

Impact Factor: 5.044

ISI Journal Citation Reports © Ranking: 2013: 26/136 (Chemistry Physical)

Online ISSN: 1867-3899

Associated Title(s): Advanced Synthesis & Catalysis, Angewandte Chemie International Edition, Chemistry - A European Journal, ChemBioChem, ChemElectroChem, ChemPhysChem, ChemSusChem

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  1. Corrigenda

    1. You have free access to this content
      Corrigendum: Monometallic Carbonyl-Derived CeO2-Supported Rh and Co Bicomponent Catalysts for CO-Free, High-Yield H2 Generation from Low-Temperature Ethanol Steam Reforming

      Dr. Lin Huang, Catherine Choong, Dr. Luwei Chen, Zhan Wang, Dr. Ziyi Zhong, Carlos Campos-Cuerva and Prof. Jianyi Lin

      Article first published online: 5 MAY 2015 | DOI: 10.1002/cctc.201500166

  2. Full Papers

    1. Rhodium Nanoparticles as Precursors for the Preparation of an Efficient and Recyclable Hydroformylation Catalyst

      Marco A. S. Garcia, Dr. Kelley C. B. Oliveira, Dr. Jean C. S. Costa, Dr. Paola Corio, Dr. Elena V. Gusevskaya, Dr. Eduardo N. dos Santos and Dr. Liane M. Rossi

      Article first published online: 4 MAY 2015 | DOI: 10.1002/cctc.201500065

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      Long live the catalyst! The heterogenization of rhodium catalysts onto a magnetic support and recovery without loss of metal, reactivity, and selectivity is discussed. Rhodium nanoparticles are used as catalyst precursors, and the active species are studied by using Raman spectroscopy.

  3. Communications

    1. A New Type of Lewis Acid–Base Bifunctional M(salphen) (M=Zn, Cu and Ni) Catalysts for CO2 Fixation

      Dr. Yanwei Ren, Jungui Chen, Dr. Chaorong Qi and Prof. Dr. Huanfeng Jiang

      Article first published online: 29 APR 2015 | DOI: 10.1002/cctc.201500113

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      Bifunctional catalysts: A new type of Lewis acid–base bifunctional Zn(salphen) catalysts with an organic base, N-methylhomopiperazine, as a nucleophile were prepared by a one-pot method and successfully applied in the production of cyclic carbonates from CO2 and epoxides. The catalysts used in this catalytic system are extremely stable and can be recycled at least five times and their activity is almost unchanged.

  4. Full Papers

    1. Thermally Induced Strains on the Catalytic Activity and Stability of Pt–M2O3/C (M=Y or Gd) Catalysts towards Oxygen Reduction Reaction

      Dr. Yun Luo, Dr. Aurélien Habrioux, Dr. Laura Calvillo, Prof. Gaetano Granozzi and Prof. Dr. Nicolas Alonso-Vante

      Article first published online: 29 APR 2015 | DOI: 10.1002/cctc.201500130

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      Positive sauna effect: Carbon-supported Pt–Y2O3 and Pt–Gd2O3 nanoparticles (NPs) are prepared by a water-in-oil nanoemulsion chemical route, followed by heat treatment at 100 and 300 °C. Heat-treated particles have slightly larger particle sizes than the as-prepared ones and contain microstrains, as detected by electron microscopy and X-ray analysis, respectively, enhancing their catalytic activity and stability toward the oxygen reduction reaction.

    2. Continuous Transfer Hydrogenation of Sugars to Alditols with Bioderived Donors over Cu–Ni–Al Catalysts

      David Scholz, Dr. Christof Aellig, Dr. Cecilia Mondelli and Prof. Javier Pérez-Ramírez

      Article first published online: 29 APR 2015 | DOI: 10.1002/cctc.201403005

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      Finding the right partner: Hydrotalcite-derived Cu–Ni–Al materials efficiently catalyze the continuous transfer hydrogenation of C6 and C5 sugars with biobased alcohols as hydrogen donors with yields of up to 67 %. This technology comprises a safer and cheaper alternative to direct hydrogenation over Ru catalysts.

  5. Communications

    1. Asymmetric NaBH4 1,4-Reduction of C3-Disubstituted 2-Propenoates Catalyzed by a Diamidine Cobalt Complex

      Yoshihiro Shuto, Tomoya Yamamura, Dr. Shinji Tanaka, Dr. Masahiro Yoshimura and Prof. Masato Kitamura

      Article first published online: 27 APR 2015 | DOI: 10.1002/cctc.201500260

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      Reduction reconsidered: CoCl2 and CoH2(BH3)2 complexes of a neutral and rigid diamidine sp2N ligand catalyze highly enantioselective 1,4-reduction of C3-disubstituted 2-propenoates by NaBH4 to produce the corresponding esters with a saturated prenyl-type motif. A series of experiments suggest that a mechanism of CoH-involved non-single-electron transfer 1,4-addition differentiates the C2 enantioface.

  6. Full Papers

    1. Synthesis of Phospholane–Phosphoramidite Ligands and their Application in Asymmetric Catalysis

      Dr. Tim Hammerer, Prof. Dr. Walter Leitner and Dr. Giancarlo Franciò

      Article first published online: 27 APR 2015 | DOI: 10.1002/cctc.201500070

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      New P,P′ hybrid ligands: A set of phospholane–phosphoramidites (quinaphoslane) with four elements of chirality are synthesized through a modular diastereoselective process and applied in the Rh-catalyzed hydrogenation of functionalized olefins with up to 99 % ee and a turnover frequency (TOF) of up to 12 000 h−1, in the Rh-catalyzed hydroformylation of vinyl arenes with regioselectivities of up to 99 % and up to 79 % ee, and in the Ir-catalyzed hydrogenation of imines with up to 79 % ee.

  7. Communications

    1. Polystyrene-Supported Triphenylsilyl Chloride for the Silylation-Based Kinetic Resolution of Secondary Alcohols

      Dr. Ravish K. Akhani, Robert W. Clark, Liang Yuan, Li Wang, Prof. Dr. Chuanbing Tang and Prof. Dr. Sheryl L. Wiskur

      Article first published online: 27 APR 2015 | DOI: 10.1002/cctc.201500173

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      Probability of precipitation: A silyl chloride polymer is employed in a kinetic resolution for the chromatography-free separation of enantiomers. After one enantiomer is covalently bonded to the polymer, it is precipitated from the solution for easy recovery. The polymer can also be recycled in subsequent kinetic resolutions without loss in selectivity.

  8. Highlights

    1. para-Quinone Methide: a New Player in Asymmetric Catalysis

      Dr. Alejandro Parra and Dr. Mariola Tortosa

      Article first published online: 27 APR 2015 | DOI: 10.1002/cctc.201500176

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      A new sheriff in town:­ para-Quinone methides (p-QMs) have been successfully used in asymmetric organocatalysis. Particularly, the asymmetric 1,6-addition of phenyl malonate and different aldehydes to 2,6-disubstituted p-QMs has provided a rapid access to important chiral diarylmethines, highlighting the importance of these synthetic intermediates. These new structures will open up the development of important asymmetric transformations in the future.

    2. Novelty in Complexity: Relationship between Small Peptides, Pd Nanoparticles, and Catalyst Characteristics

      Prof. Árpád Molnár

      Article first published online: 27 APR 2015 | DOI: 10.1002/cctc.201500108

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      Bioinspired research: The Knecht group has recently developed specific peptide-capped Pd nanoparticle catalysts. The catalyst design, inspired by nature, and the complex approach with the use of varied characterization techniques is of great interest and offers new perspectives, as well as great opportunities, for the development of new catalyst materials for future sustainable developments

  9. Communications

    1. Determining the Effect of Plasma Pre-Treatment on Antimony Tin Oxide to Support Pt@Pd and the Oxygen Reduction Reaction Activity

      Dr. Xiaoteng Liu, Dr. Kui Zhang, Jianwei Lu, Prof. Kun Luo, Prof. Jinlong Gong, Dr. Vinod K. Puthiyapura and Prof. Keith Scott

      Article first published online: 21 APR 2015 | DOI: 10.1002/cctc.201500206

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      A catalyst spread far and wide: The effect of plasma pre-treatment on antimony tin oxide (ATO) nanoparticles is to allow homogeneous dispersion of Pt@Pd over the support with a narrow particle size distribution. These factors combine for a dramatic improvement towards ORR activity and durability.

    2. Synthesis of Diaryl Sulfones at Room Temperature: Cu-Catalyzed Cross-Coupling of Arylsulfonyl Chlorides with Arylboronic Acids

      Dr. Feng Hu and Prof. Dr. Xiangyang Lei

      Article first published online: 21 APR 2015 | DOI: 10.1002/cctc.201500174

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      Stitch it up with copper: An efficient and convenient method for the synthesis of diaryl sulfones was developed through the Cu-catalyzed cross- couplings of arylsulfonyl chlorides and arylboronic acids at room temperature in open air.

    3. Synthesis of Biaryls by Decarboxylative Hiyama Coupling

      Dr. Dmitry Katayev, Benjamin Exner and Prof. Dr. Lukas J. Gooßen

      Article first published online: 21 APR 2015 | DOI: 10.1002/cctc.201500068

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      Three metals are better than one: A trimetallic Pd/Cu/Ag system allows the decarboxylative Hiyama coupling of ortho-substituted aryl carboxylates with trialkoxyarylsilanes in high yields. A Pd/N-heterocyclic carbene complex catalyzes the cross-coupling reaction with silver carbonate supporting reoxidation of the complex. Copper(II) fluoride acts as decarboxylaton catalyst, stoichiometric oxidant, and fluoride source, necessary to activate organosilanes. DMAc=Dimethylacetamide.

  10. Highlights

    1. Asymmetric Nickel-Catalysed Cross-Hydrovinylation of Two Terminal Alkenes

      Prof. Dr. Gerhard Hilt

      Article first published online: 20 APR 2015 | DOI: 10.1002/cctc.201500177

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      Pushing the boundaries: The asymmetric 1,2-hydrovinylation of styrene derivatives with terminal alkenes is realised by using a nickel catalyst and specially designed chiral NHC ligands to achieve a new level of complexity for the tail-to-tail cross-coupling of alkenes by C[BOND]H activation.

  11. Communications

    1. Ruthenium-Catalyzed Ortho-Selective Aromatic C[BOND]H Borylation of 2-Arylpyridines with Pinacolborane

      Shinsuke Okada, Dr. Takeshi Namikoshi, Prof. Dr. Shinji Watanabe and Prof. Dr. Miki Murata

      Article first published online: 20 APR 2015 | DOI: 10.1002/cctc.201500110

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      A ruthenium for C[BOND]H borylation: The ruthenium-catalyzed dehydrogenative borylation of 2-arylpyridines with pinacolborane took place at ortho-positions of the benzene ring.

  12. Full Papers

    1. Benzimidazole-Containing Porous Organic Polymers as Highly Active Heterogeneous Solid-Base Catalysts

      Yangxin Wang, Dr. Lijun Wang, Dr. Caiping Liu and Prof. Ruihu Wang

      Article first published online: 17 APR 2015 | DOI: 10.1002/cctc.201500244

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      All about that base: Two benzimidazole-containing porous organic polymers (BPOP-2 and BPOP-2) are presented. They exhibit a higher catalytic activity in the Knoevenagel condensation reaction than their homogeneous molecular counterpart. The specific surface area and pore character, not Lewis basicity, are responsible for the difference of catalytic activity in the two polymers.

  13. Minireviews

    1. Photocatalytic C[BOND]H Activation by Hydrogen-Atom Transfer in Synthesis

      Dr. Stefano Protti, Prof. Maurizio Fagnoni and Dr. Davide Ravelli

      Article first published online: 14 APR 2015 | DOI: 10.1002/cctc.201500125

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      HATs off to photocatalysis! This review covers the recent advancements in the field of photocatalytic hydrogen-atom transfer (HAT) processes for C[BOND]H bond functionalization. Applications in organic synthesis, including the formation of C[BOND]C, as well as C[BOND]halogen, C[BOND]O (C[DOUBLE BOND]O) and C[BOND]N bonds, are presented.

  14. Full Papers

    1. A Comprehensive Study of Formic Acid Oxidation on Palladium Nanocrystals with Different Types of Facets and Twin Defects

      Dr. Sang-Il Choi, Dr. Jeffrey A. Herron, Dr. Jessica Scaranto, Hongwen Huang, Yi Wang, Dr. Xiaohu Xia, Tian Lv, Jinho Park, Hsin-Chieh Peng, Prof. Manos Mavrikakis and Prof. Younan Xia

      Article first published online: 13 APR 2015 | DOI: 10.1002/cctc.201500094

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      Which mechanism on which facet? This work systematically evaluates the activities of Pd nanocrystals with different types of facets and twin defects towards formic acid oxidation.

    2. Facile Synthesis of Crystalline Polymeric Carbon Nitrides with an Enhanced Photocatalytic Performance under Visible Light

      Qinghua Liang, Prof. Zheng-Hong Huang, Prof. Feiyu Kang and Prof. Quan-Hong Yang

      Article first published online: 25 MAR 2015 | DOI: 10.1002/cctc.201500076

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      Easy does it: Crystalline polymeric graphitic carbon nitrides with an enhanced visible-light-driven photocatalytic performance are prepared by heating a mixture of melamine and lithium halides.

    3. Surface Modification of Carbon Nitride Polymers by Core–Shell Nickel/Nickel Oxide Cocatalysts for Hydrogen Evolution Photocatalysis

      Guigang Zhang, Guosheng Li and Prof. Xinchen Wang

      Article first published online: 12 MAR 2015 | DOI: 10.1002/cctc.201500069

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      Hard core catalyst: A Ni/NiO core–shell nanostructure is prepared successfully by a facile immersion strategy. We use cost-acceptable nickel as an efficient cocatalyst to replace noble-metal Pt to facilitate sustainable photocatalytic hydrogen evolution by polymeric carbon nitride semiconductors.

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