Chemistry – An Asian Journal

Cover image for Vol. 4 Issue 3

March 2, 2009

Volume 4, Issue 3

Pages 343–471

  1. Cover Picture

    1. Top of page
    2. Cover Picture
    3. Graphical Abstract
    4. News
    5. Focus Reviews
    6. Communications
    7. Full Papers
    8. Preview
    1. Cover Picture: Inclusion Behavior of β-Cyclodextrin with Bipyridine Molecules: Factors Governing Host-Guest Inclusion Geometries (Chem. Asian J. 3/2009) (page 343)

      Yan-Li Zhao, Diego Benítez, Il Yoon and J. Fraser Stoddart

      Article first published online: 24 FEB 2009 | DOI: 10.1002/asia.200990004

      Thumbnail image of graphical abstract

      A sytematic investigation of the molecular inclusion behavior by β-cyclodextrin (gold) towards constitutionally different yet structurally similar bipyridine guests, demonstrates that differences of the nitrogen atom positions and the bridge bond linking the two pyridine rings of the bipyridine guests can significantly affect the binding abilities, inclusion geometries, and self-assembly behavior of β-cyclodextrin in both the solution and solid states. J. F. Stoddart and co-workers suggest that these new superstructural and quantitative observations, with judicious constitutional design, allow highly ordered supramolecular arrays to be achieved conveniently in a controllable way. For more information, see their Full Paper on page 446 ff.

  2. Graphical Abstract

    1. Top of page
    2. Cover Picture
    3. Graphical Abstract
    4. News
    5. Focus Reviews
    6. Communications
    7. Full Papers
    8. Preview
    1. Graphical Abstract: Chem. Asian J. 3/2009 (pages 344–348)

      Article first published online: 24 FEB 2009 | DOI: 10.1002/asia.200990005

  3. News

    1. Top of page
    2. Cover Picture
    3. Graphical Abstract
    4. News
    5. Focus Reviews
    6. Communications
    7. Full Papers
    8. Preview
  4. Focus Reviews

    1. Top of page
    2. Cover Picture
    3. Graphical Abstract
    4. News
    5. Focus Reviews
    6. Communications
    7. Full Papers
    8. Preview
    1. Carbon–Carbon Bond Formation

      A Retrospective on the Design and Synthesis of Novel Molecules through a Strategic Consideration of Metathesis and Suzuki–Miyaura Cross-Coupling (pages 354–362)

      Sambasivarao Kotha and Kalyaneswar Mandal

      Article first published online: 8 DEC 2008 | DOI: 10.1002/asia.200800244

      Thumbnail image of graphical abstract

      Synergy in synthesis: Strategic consideration of metathesis and Suzuki–Miyaura (SM) cross-coupling for C[BOND]C bond-formation processes has opened up new and “green” synthetic routes to various complex targets. The use of this synergistic combination for the synthesis of supramolecular ligands, polyaromatic compounds, and complex natural products is covered in this Focus Review.

    2. Supramolecular Chemistry

      pH-Controllable Supramolecular Systems (pages 364–381)

      Ken Cham-Fai Leung, Chun-Pong Chak, Chui-Man Lo, Wing-Yan Wong, Shouhu Xuan and Christopher H. K. Cheng

      Article first published online: 17 DEC 2008 | DOI: 10.1002/asia.200800320

      Thumbnail image of graphical abstract

      Proton, all that matters! This Focus Review surveys representative examples of pH-controllable supramolecular systems with interesting features and state-of-the-art applications, which can lead to the construction of meaningful molecular machines for electronic and biological applications that can be controlled by simple perturbation with acid and base.

  5. Communications

    1. Top of page
    2. Cover Picture
    3. Graphical Abstract
    4. News
    5. Focus Reviews
    6. Communications
    7. Full Papers
    8. Preview
    1. Silicification

      Bio-Inspired Silicification on Patterned Surfaces Generated by Microcontact Printing and Layer-by-Layer Self-Assembly (pages 382–385)

      Sung Ho Yang and Insung S. Choi

      Article first published online: 29 DEC 2008 | DOI: 10.1002/asia.200800381

      Thumbnail image of graphical abstract

      Micropatterns of silica were generated under biocompatible conditions by a combination of microcontact printing (μCP), layer-by-layer (LbL) self-assembly, and biomimetic silicification. Quaternary amine-containing poly(diallyl dimethyl ammonium chloride) induced polycondensation of silicic acid, resulting in spatioselective formation of silica micropatterns. Scale bar: 10 μm.

    2. Carbohydrates

      Synthesis of Alginate Oligosaccharides Containing L-Guluronic Acids (pages 386–390)

      Fa-Chen Chi, Suvarn S. Kulkarni, Medel Manuel L. Zulueta and Shang-Cheng Hung

      Article first published online: 18 DEC 2008 | DOI: 10.1002/asia.200800406

      Thumbnail image of graphical abstract

      Making ends meet: The L-gulopyranosyl trichloroacetimidate and 1,6-anhydro-2,3-di-O-benzyl-β-L-gulopyranose, efficiently derived from L-ascorbic acid, were individually used as a starting unit and an elongation unit to prepare L-guluronic acid linked alginate oligosaccharides in excellent α selectivity and in good yields.

  6. Full Papers

    1. Top of page
    2. Cover Picture
    3. Graphical Abstract
    4. News
    5. Focus Reviews
    6. Communications
    7. Full Papers
    8. Preview
    1. Charge Transfer

      Imidazole-Annulated Tetrathiafulvalenes Exhibiting pH-Tuneable Intramolecular Charge Transfer and Redox Properties (pages 392–399)

      Jincai Wu, Nathalie Dupont, Shi-Xia Liu, Antonia Neels, Andreas Hauser and Silvio Decurtins

      Article first published online: 29 DEC 2008 | DOI: 10.1002/asia.200800322

      Thumbnail image of graphical abstract

      CT or not CT: Three imidazole-annulated TTF derivatives 13 have been prepared and fully characterized. The influence of the TTF unit on the pKa values of the acceptor units as determined by photometric titration has been discussed. The results reported here are part of an initial exploratory study to generate a range of well-defined coordination networks.

    2. Intermolecular Interactions

      Magneto-Structural Correlations in a 1,3,2-Dithiazolyl Radical Crystal, BBDTA⋅GaBr4: Structure and Magnetic Properties of its Three Polymorphs (pages 400–405)

      Wataru Fujita and Koichi Kikuchi

      Article first published online: 8 DEC 2008 | DOI: 10.1002/asia.200800362

      Thumbnail image of graphical abstract

      Three attractions in one cage: Various magnetic networks are formed in the three polymorphs of an organic magnet, BBTDA(=benzo[1,2-d:4,5-d′]bis[1,3,2]dithiazole)⋅GaBr4. The three phases show quite different magnetic behaviors in spite of having the same chemical formula. Their magnetic differences originate from the relative configuration of the neighboring organic radical molecules in their crystals.

    3. Protective Groups

      Potassium tert-Butoxide-Catalyzed Dehydrogenative Si[BOND]O Coupling: Reactivity Pattern and Mechanism of an Underappreciated Alcohol Protection (pages 406–410)

      Andreas Weickgenannt and Martin Oestreich

      Article first published online: 19 JAN 2009 | DOI: 10.1002/asia.200800426

      Thumbnail image of graphical abstract

      As simple as it gets! Potassium tert-butoxide alone catalyzes the direct dehydrogenative Si[BOND]O coupling of several synthetically important silanes with 1°, 2°, and even 3° alcohols without the need for stoichiometric hydrochloric acid scavengers. The stereoretentive mechanism is probed with a silicon-stereogenic silane.

    4. Schiff Bases

      (N-Salicylidene)aniline Derived Schiff Base Complexes of Methyltrioxorhenium(VII): Ligand Influence and Catalytic Performance (pages 411–418)

      Ming-Dong Zhou, Yang Yu, Alejandro Capapé, Kavita R. Jain, Eberhardt Herdtweck, Xiao-Rong Li, Jun Li, Shu-Liang Zang and Fritz E. Kühn

      Article first published online: 15 DEC 2008 | DOI: 10.1002/asia.200800358

      Thumbnail image of graphical abstract

      It′s a fine line: Methyltrioxorhenium(VII) (MTO) readily forms 1:1 adducts with several N-(salicylidene)aniline derived Schiff bases. Steric and electronic effects of the ligands play a major role when it comes to stability and catalytic activity. Good donors on the Schiff base ligands, in general, lead to shorter Re[BOND]O(Schiff base) bridges and lower catalytic activity, while it is the opposite for acceptor ligands on the Schiff bases.

    5. Emissive Nucleosides

      Enzymatic Incorporation of Emissive Pyrimidine Ribonucleotides (pages 419–427)

      Seergazhi G. Srivatsan and Yitzhak Tor

      Article first published online: 15 DEC 2008 | DOI: 10.1002/asia.200800370

      Thumbnail image of graphical abstract

      Making an emission: T7 RNA polymerase incorporates a series of thiophene-modified uridine triphosphate (UTP) analogues to generate emissive RNA transcripts. Labeling experiments suggested that the enzyme frequently pauses at the incorporation position and, when incorporation does take place, T7 RNA polymerase fails to elongate the modified oligonucleotides and yields aborted transcripts. TPs=triphosphates.

    6. Ambiphilic Ligands

      Bridging M[BOND]Cl Bonds with Ambiphilic Phosphine–Borane Ligands (pages 428–435)

      Sébastien Bontemps, Ghenwa Bouhadir, David C. Apperley, Philip W. Dyer, Karinne Miqueu and Didier Bourissou

      Article first published online: 7 JAN 2009 | DOI: 10.1002/asia.200800388

      Thumbnail image of graphical abstract

      Bridging or pendant? Palladium and rhodium complexes deriving from an ambiphilic phosphine–borane ligand are shown to adopt a bridging P[RIGHTWARDS ARROW]M[BOND]Cl[RIGHTWARDS ARROW]B coordination mode in the solid state. DFT calculations provide more insight into the Cl[RIGHTWARDS ARROW]B interaction and suggest the possible interconversion of the bridging and B-pendant forms in solution.

    7. Electron Transfer

      Nano-Supramolecular Assemblies Constructed from Water-Soluble Bis(calix[5]arenes) with Porphyrins and Their Photoinduced Electron Transfer Properties (pages 436–445)

      Dong-Sheng Guo, Kun Chen, Hong-Qing Zhang and Yu Liu

      Article first published online: 7 JAN 2009 | DOI: 10.1002/asia.200800410

      Thumbnail image of graphical abstract

      What a PET! Two well-defined nanoarchitectures with 2D netlike and 1D linear topological structures are constructed by bis(p-sulfonatocalix[5]arenes) and cationic porphyrins, respectively, in which an unambiguous PET process is observed. As a result, the supramolecular aggregates possess, in principle, benign photoelectric properties with the transport of an electron between the building blocks in the nanoscale region.

    8. Host–Guest Systems

      Inclusion Behavior of β-Cyclodextrin with Bipyridine Molecules: Factors Governing Host-Guest Inclusion Geometries (pages 446–456)

      Yan-Li Zhao, Diego Benítez, Il Yoon and J. Fraser Stoddart

      Article first published online: 12 DEC 2008 | DOI: 10.1002/asia.200800373

      Thumbnail image of graphical abstract

      Guest Effect: The differences of nitrogen atom positions and the bridge bonds linked to two pyridine rings of some bipyridine guests can significantly affect the binding abilities and inclusion geometries of β-cyclodextrin with the guests in both the solution and solid states.

    9. Carbon-Supported Nanoparticles

      Iron and Ruthenium Nanoparticles in Carbon Prepared by Thermolysis of Buckymetallocenes (pages 457–465)

      Takahiro Nakae, Yutaka Matsuo, Masatoshi Takagi, Yuta Sato, Kazu Suenaga and Eiichi Nakamura

      Article first published online: 9 JAN 2009 | DOI: 10.1002/asia.200800331

      Thumbnail image of graphical abstract

      Turn up the heat! Iron and ruthenium nanoparticles in carbon have been prepared by thermolysis of iron and ruthenium fullerene complexes at 500–900 °C in nitrogen. Differences in their size, formation processes, and catalytic activities have been characterized using TG-DTA, VT-TEM, and VT-XRD analyses.

  7. Preview

    1. Top of page
    2. Cover Picture
    3. Graphical Abstract
    4. News
    5. Focus Reviews
    6. Communications
    7. Full Papers
    8. Preview
    1. You have free access to this content
      Preview: Chem. Asian J. 4/2009 (page 471)

      Article first published online: 24 FEB 2009 | DOI: 10.1002/asia.200990007

SEARCH

SEARCH BY CITATION