ChemCatChem

Cover image for Vol. 4 Issue 1

January 2, 2012

Volume 4, Issue 1

Pages 1–135

  1. Cover Picture

    1. Top of page
    2. Cover Picture
    3. Editorial
    4. Graphical Abstract
    5. News
    6. Reviews
    7. Highlights
    8. Communications
    9. Full Papers
    10. Preview
    1. Cover Picture: Synthesis of Platinum–Ruthenium Nanoparticles under Supercritical CO2 and their Confinement in Carbon Nanotubes: Hydrogenation Applications (ChemCatChem 1/2012) (page 1)

      Dr. Eva Castillejos, Dr. Mohamad Jahjah, Dr. Isabelle Favier, Dr. Arantxa Orejón, Christian Pradel, Dr. Emmanuelle Teuma, Dr. Anna M. Masdeu-Bultó, Prof. Philippe Serp and Prof. Montserrat Gómez

      Article first published online: 27 DEC 2011 | DOI: 10.1002/cctc.201190054

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      Selective Oxidation In their contribution on page 118 ff., Gómez, Serp, and co-workers describe efficient catalysts for the selective hydrogenation of cinnamaldehyde to cinnamyl alcohol, the chemical responsible for the hyacinth's scent. Bimetallic platinum/ruthenium nanoparticles stabilized by simple ligands were prepared in both THF and supercritical carbon dioxide, giving more dispersed particles than those prepared in the organic solvent. Their confinement in multi-walled carbon nanotubes could be achieved thanks to the appropriate functionalization of the support by amide groups containing a long alkyl chain. The higher selectivity observed for the confined catalysts in relation to the non-confined ones, can be attributed to the higher concentration of reactants inside the multi-walled carbon nanotubes.

  2. Editorial

    1. Top of page
    2. Cover Picture
    3. Editorial
    4. Graphical Abstract
    5. News
    6. Reviews
    7. Highlights
    8. Communications
    9. Full Papers
    10. Preview
    1. You have free access to this content
      Editorial: Catalysis: An Enigmatic Discipline (pages 3–5)

      Dr. Peter Gölitz and Dr. Michael A. Rowan

      Article first published online: 27 DEC 2011 | DOI: 10.1002/cctc.201100429

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      Editorial 2012: A quick rundown of last year and an introduction to the next. Expect more great catalysis, more breakthroughs, and more quality.

  3. Graphical Abstract

    1. Top of page
    2. Cover Picture
    3. Editorial
    4. Graphical Abstract
    5. News
    6. Reviews
    7. Highlights
    8. Communications
    9. Full Papers
    10. Preview
    1. Graphical Abstract: ChemCatChem 1/2012 (pages 6–11)

      Article first published online: 27 DEC 2011 | DOI: 10.1002/cctc.201190057

  4. News

    1. Top of page
    2. Cover Picture
    3. Editorial
    4. Graphical Abstract
    5. News
    6. Reviews
    7. Highlights
    8. Communications
    9. Full Papers
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    1. Spotlights on our sister journals: ChemCatChem 1/2012 (pages 14–16)

      Article first published online: 27 DEC 2011 | DOI: 10.1002/cctc.201190056

  5. Reviews

    1. Top of page
    2. Cover Picture
    3. Editorial
    4. Graphical Abstract
    5. News
    6. Reviews
    7. Highlights
    8. Communications
    9. Full Papers
    10. Preview
    1. The Best of Two Worlds from the Gold Catalysis Universe: Making Homogeneous Heterogeneous (pages 18–29)

      Miguel Peixoto de Almeida and Dr. Sónia A. C. Carabineiro

      Article first published online: 25 NOV 2011 | DOI: 10.1002/cctc.201100288

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      The best of two worlds! Both heterogeneous and homogeneous catalyses by gold have well-known advantages. The heterogenization of gold complexes through anchoring on porous solid materials is a way to have “the best of two worlds.” This work reviews the attempts made so far on this important topic. The results obtained show that these hybrid materials can have improved activity and selectivity and are potential choice candidates for several catalytic processes.

    2. Catalysts Immobilized on Organic Polymeric Monolithic Supports: From Molecular Heterogeneous Catalysis to Biocatalysis (pages 30–44)

      Dr.  Emily Baird Anderson and Prof. Dr.  Michael R. Buchmeiser

      Article first published online: 14 NOV 2011 | DOI: 10.1002/cctc.201100086

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      Affixation with the monolith: This review elucidates advances in supported catalysis for metathesis, Heck, Suzuki, Sonogashira–Hagihara, and biocatalytic reactions. Syntheses and post-functionalizations of organic polymeric monoliths to affix functional catalysts are described. The function of these porous structures in both heterogeneous catalysis and biocatalysis under continuous flow conditions is illustrated.

  6. Highlights

    1. Top of page
    2. Cover Picture
    3. Editorial
    4. Graphical Abstract
    5. News
    6. Reviews
    7. Highlights
    8. Communications
    9. Full Papers
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    1. A Synthetic Nickel Electrocatalyst with a Turnover Frequency above 100 000 s−1 for H2 Production (pages 45–46)

      Dr. Claudio Bianchini and Prof. Paolo Fornasiero

      Article first published online: 8 NOV 2011 | DOI: 10.1002/cctc.201100319

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      And the catalyst goes wild! The results of great interest in the field of hydrogen production catalyzed by using a synthetic nickel electrocatalyst with a fantastic turnover frequency (above 100 000 s−1) have been discussed.

    2. Sterically Demanding Aryl Chlorides: No Longer a Problem for Borylations (pages 47–49)

      Christopher M. Vogels and Prof. Stephen A. Westcott

      Article first published online: 16 NOV 2011 | DOI: 10.1002/cctc.201100249

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      Borylation support group: Sterically demanding aryl chlorides can now be used effectively in the palladium-catalyzed borylation reaction. Phosphanes tethered to a silica support are used in the catalyst system to give aryl boronate esters in high yields.

  7. Communications

    1. Top of page
    2. Cover Picture
    3. Editorial
    4. Graphical Abstract
    5. News
    6. Reviews
    7. Highlights
    8. Communications
    9. Full Papers
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    1. C1-Substituted N-Alkyl Tetrahydroisoquinoline Derivatives through V-Catalyzed Oxidative Coupling (pages 51–54)

      Dr. Kevin M. Jones, Pol Karier and Dr. Martin Klussmann

      Article first published online: 14 NOV 2011 | DOI: 10.1002/cctc.201100324

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      In the THIQ of it:N-Alkyl tetrahydroisoquinolines are oxidatively coupled with a variety of nucleophiles in the presence of m-CPBA and [VO(acac)2]. This method has been applied to the synthesis of the opioid methopholine.

    2. Relevance of the Nitrite Route in the NOx Adsorption Mechanism over Pt–Ba/Al2O3 NOx Storage Reduction Catalysts Investigated by using Operando FTIR Spectroscopy (pages 55–58)

      Prof.  L. Lietti, Prof.  M. Daturi, Dr.  V. Blasin-Aubé, Prof.  G. Ghiotti, Dr.  F. Prinetto and Prof.  P. Forzatti

      Article first published online: 4 NOV 2011 | DOI: 10.1002/cctc.201100304

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      Nitrites dominate! Nitrites and nitrates are formed on the catalyst surface upon storage of NOx over a model Pt–Ba/Al2O3 NOx storage–reduction catalyst. Nitrites are formed through the oxidation of NO at the Pt–Ba interface (nitrite route), while nitrates are formed upon nitrite oxidation and/or NO2 adsorption following NO oxidation at Pt sites. The nitrite route is the unique pathway responsible for the storage of NOx at low temperatures, but it also dominates at high temperatures.

    3. Hydrogenation of Nitrobenzene Over Au/MeOx Catalysts—A Matter of the Support (pages 59–63)

      Martin Makosch, Dr. Jacinto Sá, Christiane Kartusch, Dr. Gilles Richner, Prof. Dr. Jeroen A. van Bokhoven and Prof. Dr. Konrad Hungerbühler

      Article first published online: 11 NOV 2011 | DOI: 10.1002/cctc.201100299

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      Cheers for the support: By varying the support, the hydrogenation of nitrobenzene occurs either through a direct route in the case of Au/TiO2 catalysts and through a condensation route over Au/CeO2 catalysts. Adsorption on the surface of the catalysts is discussed as a possible key factor in determining the route.

    4. Selective Hydrodeoxygenation of Lignin-Derived Phenolic Monomers and Dimers to Cycloalkanes on Pd/C and HZSM-5 Catalysts (pages 64–68)

      Dr. Chen Zhao and Prof. Dr. Johannes A. Lercher

      Article first published online: 14 NOV 2011 | DOI: 10.1002/cctc.201100273

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      Suffocating phenols: A catalyst system consisting of Pd/C and HZSM-5 shows an extremely high selectivity in removing oxygen-containing groups (hydroxyl, methoxy, ketone, alkyl[BOND]O[BOND]aryl, and aryl[BOND]O[BOND]aryl) in lignin-derived substituted phenolic monomers and dimers through a metal-acid catalyzed cascade cleavage of C[BOND]O bonds in phenolic dimers and the integrated hydrogenation and dehydration reactions in water at 473 K.

    5. Palladium-Catalyzed Aminocarbonylation of Benzyl Chlorides using Ammonia (pages 69–71)

      Xiao-Feng Wu, Johannes Schranck, Dr. Helfried Neumann and Prof. Dr. Matthias Beller

      Article first published online: 16 NOV 2011 | DOI: 10.1002/cctc.201100268

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      Don't moan, use Ammonia! A general palladium-catalyzed aminocarbonylation of benzyl chlorides using ammonia has been developed. Various primary 2-arylacetamides are synthesized in good to excellent yields and selectivities by using an inexpensive palladium catalyst system for this atom-efficient methodology.

    6. Low Temperature-High Selectivity Process over Supported Pd Nanoparticles in Partial Oxidation of Methanol (pages 72–75)

      Robert Wojcieszak, Prof. Eric M. Gaigneaux and Dr. Patricio Ruiz

      Article first published online: 4 NOV 2011 | DOI: 10.1002/cctc.201100215

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      Getting friendly with methanol: The most important challenge in gas phase heterogeneous catalysis is to reach high selectivity in a desired process. Probably the only way to get high selectivity in gas phase heterogeneous catalysis is to work under “friendly temperature conditions”. Methyl formate could be produced directly from methanol with a very high selectivity, over supported palladium nanoparticles at low temperature and under atmospheric pressure.

    7. Symbiotic Catalysis Relay: Molecular Oxygen Activation Catalyzed by Multiple Small Molecules at Ambient Temperature and its Mechanism (pages 76–80)

      Cangbai Qiu, Liqun Jin, Zhiliang Huang, Zhenquan Tang, Prof. Aiwen Lei, Zhenlu Shen, Nan Sun, Weimin Mo, Baoxiang Hu and Prof. Xinquan Hu

      Article first published online: 14 NOV 2011 | DOI: 10.1002/cctc.201100300

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      A race of dwarfs: We have successfully a transition-metal-free catalysis relay method for efficient aerobic oxidation at ambient conditions. The catalysis relay system is a combination of four dependent small molecules that enable the transfer of the oxidative ability of molecular oxygen to the aerobic oxidation of alcohols to their corresponding carbonyl compounds under mild conditions.

  8. Full Papers

    1. Top of page
    2. Cover Picture
    3. Editorial
    4. Graphical Abstract
    5. News
    6. Reviews
    7. Highlights
    8. Communications
    9. Full Papers
    10. Preview
    1. The Influence of Substituents in Diphosphine Ligands on the Hydrogenation Activity and Selectivity of the Corresponding Rhodium Complexes as Exemplified by ButiPhane (pages 81–88)

      Dr. Christian Fischer, Dr. Stefan Schulz, Dr. Hans-Joachim Drexler, Carmen Selle, Dr. Matthias Lotz, Dr. Mathias Sawall, Prof. Dr. Klaus Neymeyr and Prof. Dr. Detlef Heller

      Article first published online: 17 NOV 2011 | DOI: 10.1002/cctc.201100277

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      Buti in the eye of the beholder: The influence of substituents in ButiPhane ligands on the hydrogenation activity and selectivity of the corresponding rhodium complexes has been quantitatively assessed. In the hydrogenation of a series of prochiral olefins, improved selectivities were obtained by increasing the steric bulk of the substituents on the phospholane ring of the chiral ligand.

    2. A Novel Synthesis of Bioactive Catechols by Layer-by-Layer Immobilized Tyrosinase in an Organic Solvent Medium (pages 89–99)

      Dr. Melissa Guazzaroni, Dr. Marina Pasqualini, Dr. Giorgia Botta and Prof. Raffaele Saladino

      Article first published online: 21 OCT 2011 | DOI: 10.1002/cctc.201100229

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      Tyrosinase layers it down: Catechols are biologically active, synthetically challenging derivatives. Heterogeneous tyrosinase catalysts obtained through the layer-by-layer technique were applied to the conversion of phenols into the corresponding catechols. The reactions proceeded in high yield and selectivity, avoiding the formation of quinones by the use of mixed solvents. The biocatalysts retained activity over several runs.

    3. The Mechanism of Low-Temperature CO Oxidation on IB Group Metals and Metal Oxides (pages 100–111)

      Dr. Zi-Zhang Wei, Dui-Chun Li, Prof. Dr. Xian-Yong Pang, Dr. Cun-Qin Lv and Prof. Dr. Gui-Chang Wang

      Article first published online: 23 NOV 2011 | DOI: 10.1002/cctc.201100298

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      The CO terminator: Density functional theory results show that both gas phase CO and adsorbed CO molecules can react with lattice oxygen on oxygen-terminated metal oxides. The catalytic activity of CO oxidation on oxygen-terminated metal oxides is higher than that on metal-terminated metal oxides.

    4. Stable and Efficient Homogeneous Photocatalytic H2 Evolution Based on Water Soluble Pyrenetetrasulfonic Acid Functionalized Platinum Nanocomposites (pages 112–117)

      Dr. Mingshan Zhu, Zhi Li, Prof. Dr. Yukou Du, Dr. Zhigang Mou and Prof. Dr. Ping Yang

      Article first published online: 9 NOV 2011 | DOI: 10.1002/cctc.201100253

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      Dressed up for the photoshoot: A stable and efficient homogeneous catalytic system involving 1,3,6,8-pyrenetetrasulfonic acid (PTSA) functionalized Pt nanocomposites as photocatalysts and ethylenediaminetetraacetic acid (EDTA) as a sacrificial reductant in the absence of an electron mediator was prepared.

    5. Synthesis of Platinum–Ruthenium Nanoparticles under Supercritical CO2 and their Confinement in Carbon Nanotubes: Hydrogenation Applications (pages 118–122)

      Dr. Eva Castillejos, Dr. Mohamad Jahjah, Dr. Isabelle Favier, Dr. Arantxa Orejón, Christian Pradel, Dr. Emmanuelle Teuma, Dr. Anna M. Masdeu-Bultó, Prof. Philippe Serp and Prof. Montserrat Gómez

      Article first published online: 11 NOV 2011 | DOI: 10.1002/cctc.201100244

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      Into the nanotube: Platinum–ruthenium nanoparticles confined into functionalized multiwalled carbon nanotubes were found to be efficient catalysts for the hydrogenation of cinnamaldehyde in contrast to the unsupported catalytic systems. Although bimetallic nanoparticles synthesized in supercritical CO2 led to more agglomerated materials than those in THF, no important differences were observed in catalysis.

    6. Microwave-Assisted Meyer–Schuster Rearrangement of Propargylic Alcohols Catalyzed by the Oxovanadate Complex [V(O)Cl(OEt)2] (pages 123–128)

      Prof. Dr. Antonio Antiñolo, Dr. Fernando Carrillo-Hermosilla, Dr. Victorio Cadierno, Dr. Joaquín García-Álvarez and Prof. Dr. Antonio Otero

      Article first published online: 6 OCT 2011 | DOI: 10.1002/cctc.201100239

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      Stepping onto forgotten paths: A new protocol for the selective Meyer–Schuster rearrangement of propargylic alcohols has been developed by using catalytic amounts of the readily accessible oxovanadate(V) complex [V(O)Cl(OEt)2].

    7. Zirconium Phosphate Coating on Aluminum Foams by Electrophoretic Deposition for Acidic Catalysis (pages 129–133)

      Dr. Vitaly V. Ordomsky, Prof. Dr. Jaap C. Schouten, Dr. John van der Schaaf and Dr.  T. Alexander Nijhuis

      Article first published online: 28 OCT 2011 | DOI: 10.1002/cctc.201100205

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      Foamtastic: A novel method for the preparation of a solid acid foam has been developed. It is based on electrophoretic deposition of zirconium phosphate on metallic foam. Advantages of the coating by electric field led to an area-related catalytic activity about two times higher than that of a bulk catalyst in the fructose dehydration reaction.

  9. Preview

    1. Top of page
    2. Cover Picture
    3. Editorial
    4. Graphical Abstract
    5. News
    6. Reviews
    7. Highlights
    8. Communications
    9. Full Papers
    10. Preview
    1. You have free access to this content
      Preview: ChemCatChem 2/2012 (page 135)

      Article first published online: 27 DEC 2011 | DOI: 10.1002/cctc.201190055

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