Chemistry – An Asian Journal

Cover image for Vol. 1 Issue 4

October 20, 2006

Volume 1, Issue 4

Pages 499–633

  1. Cover Picture

    1. Top of page
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    3. Graphical Abstract
    4. Corrigendum
    5. Focus Review
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    1. Cover Picture: Tuning the Formation of Cadmium(II) Urocanate Frameworks by Control of Reaction Conditions: Crystal Structure, Properties, and Theoretical Investigation (Chem. Asian J. 4/2006) (page 499)

      Ru-Qiang Zou , Rui-Qin Zhong , Ling Jiang , Yusuke Yamada, Nobuhiro Kuriyama and Qiang Xu 

      Article first published online: 11 OCT 2006 | DOI: 10.1002/asia.200690006

      A diverse display of crystal structures in Cd(II) urocanate coordination compounds results from the tautomerism of the urocanate anion through control of the reaction conditions. Temperature, pressure, and even the metal ions themselves together influence this tautomerism to produce the enormous structural diversity of such metal coordination compounds. On page 536 ff., Q. Xu and co-workers describe just three that can be obtained: the alternating 2D layer, the 3D alpha-polonium network, and the four-fold interpenetrated diamondoid network.

  2. Graphical Abstract

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    1. Graphical Abstract: Chem. Asian J. 4/2006 (pages 500–504)

      Article first published online: 11 OCT 2006 | DOI: 10.1002/asia.200690007

  3. Corrigendum

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    3. Graphical Abstract
    4. Corrigendum
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    1. You have free access to this content
      Chiral Scandium Catalysts for Enantioselective Michael Reactions of β-Ketoesters (page 504)

      Chikako Ogawa, Keiko Kizu, Haruka Shimizu, Masahiro Takeuchi and Shu Kobayashi

      Article first published online: 11 OCT 2006 | DOI: 10.1002/asia.200690008

      This article corrects:

      Chiral Scandium Catalysts for Enantioselective Michael Reactions of β-Ketoesters

      Vol. 1, Issue 1-2, 121–124, Article first published online: 3 JUL 2006

  4. Focus Review

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    1. Molecular Oxygen To Regenerate PdII Active Species (pages 508–515)

      Jacques Muzart

      Article first published online: 5 OCT 2006 | DOI: 10.1002/asia.200600202

      Thumbnail image of graphical abstract

      Catalytic palladium resuscitation: Experimental and theoretical studies on the possible formation of [HOOPdXLn] and [(η2-O2)PdL2] intermediates (L=η2 ligand) in the course of PdII-catalyzed aerobic reactions are reviewed. These studies could make a major contribution to the exploitation of the powerful nature of PdII catalysis.

  5. Full Papers

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    1. Photo- and Redox-Active Dendritic Molecules with Soft, Layered Nanostructures (pages 516–528)

      Yoshihiro Kikuzawa, Toshi Nagata, Tahei Tahara and Kunihiko Ishii

      Article first published online: 11 OCT 2006 | DOI: 10.1002/asia.200600134

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      One up on the previous: Introduction of redox-active moieties at each layer of a dendritic framework leads to an interesting class of redox-pool molecules. Examination of the molecules with ferrocenyl groups in the dendritic framework and a porphyrin at the core revealed that the ferrocenyl groups at the second layer could approach the core porphyrin most closely.

    2. Nanocrystalline Ag from Supramolecular Stabilization of Metals in 4-tert-Butylcalix[4]arene Lattices (pages 529–535)

      Philip O. Brown , Gary D. Enright and John A. Ripmeester 

      Article first published online: 27 SEP 2006 | DOI: 10.1002/asia.200600101

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      Pot of silver: Self-assembled, silver-loaded calixarenes can be obtained through clathration of an ethylenediamine–silver complex within a 4-tert-butylcalix[4]arene framework. These frameworks are readily deaminated by heating and give rise to metallic, nanocrystalline silver clusters.

    3. Tuning the Formation of Cadmium(II) Urocanate Frameworks by Control of Reaction Conditions: Crystal Structure, Properties, and Theoretical Investigation (pages 536–543)

      Ru-Qiang Zou , Rui-Qin Zhong , Ling Jiang , Yusuke Yamada, Nobuhiro Kuriyama and Qiang Xu 

      Article first published online: 8 SEP 2006 | DOI: 10.1002/asia.200600113

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      What a difference a swap makes: The tautomerism of the urocanate anion results in the formation of three CdII urocanate coordination compounds through control of the reaction conditions. Temperature, pressure, and even the metal ions themselves together influence this tautomerism and result in the enormous structural diversity of such metal coordination compounds.

    4. Dendrimeric Bisphosphonates for Multivalent Protein Surface Binding (pages 544–554)

      Markus Arendt, Wei Sun, Jens Thomann, Xiulan Xie and Thomas Schrader

      Article first published online: 4 OCT 2006 | DOI: 10.1002/asia.200600125

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      Strong ties: The concept of multivalency often found in natural protein surface recognition processes can be successfully applied to an artificial system. A weak lysine and arginine binder was dendronized and transformed into an efficient receptor site for lysine-rich proteins.

    5. Design of Dual-Emission Chemosensors for Ratiometric Detection of ATP Derivatives (pages 555–563)

      Akio Ojida, Yoshifumi Miyahara, Jirarut Wongkongkatep, Shun-ichi Tamaru, Kazuki Sada and Itaru Hamachi

      Article first published online: 28 SEP 2006 | DOI: 10.1002/asia.200600137

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      A shining light: New fluorescent chemosensors for nucleoside pyrophosphates such as ATP consist of an acridine fluorophore and two ZnII–dipicolylamine units. They display a dual-emission change upon binding to the substrate, thus enabling fluorescence ratiometric analysis under neutral aqueous conditions. The chemosensors can also be applied to the real-time monitoring of enzymatic processes.

    6. Structure-Dependent Photoinduced Electron Transfer in Fullerodendrimers with Light-Harvesting Oligophenylenevinylene Terminals (pages 564–574)

      Nicola Armaroli, Gianluca Accorsi, John N. Clifford, Jean-François Eckert and Jean-François Nierengarten

      Article first published online: 6 SEP 2006 | DOI: 10.1002/asia.200600082

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      Light branches: The photophysical properties of some oligophenylenevinylene-terminated phenylenevinylene dendrons attached to C60 were explored. These properties are very much dependent on the size of the molecular architecture of the fullerodendrimers.

    7. Assembly of DNA Nanostructures with Branched Tris-DNA (pages 575–580)

      Takahiro Kuroda, Yoshimasa Sakurai, Yukinao Suzuki, Akiko O. Nakamura, Masayasu Kuwahara, Hiroaki Ozaki and Hiroaki Sawai

      Article first published online: 28 SEP 2006 | DOI: 10.1002/asia.200600088

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      Reaching out: A three-armed phenyl moiety can be used as a rigid linker for the synthesis of branched tris-DNA molecules. These branched molecules associate with each other to form dimeric, tetrameric, linear, and spherical oligomeric complexes.

    8. NMR Spectroscopic Observation of a Metal-Free Acetylide Anion (pages 581–585)

      Yoshiyuki Tanaka, Makoto Arakawa, Yohei Yamaguchi, Chieko Hori, Masahiro Ueno, Takeyuki Tanaka, Tatsushi Imahori and Yoshinori Kondo

      Article first published online: 5 SEP 2006 | DOI: 10.1002/asia.200600099

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      Gotcha! Deprotonation of phenylacetylene with the strong phosphazene base tBu-P4 generates the metal-free phenylacetylide anion. This ethynyl carbanion was observed for the first time with NMR spectroscopy.

    9. Stereospecific and Stereodivergent Construction of Tertiary and Quaternary Carbon Centers through Switchable Directed/Nondirected Allylic Substitution (pages 586–597)

      Bernhard Breit, Peter Demel, Daniel Grauer and Christopher Studte

      Article first published online: 11 OCT 2006 | DOI: 10.1002/asia.200600100

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      Take your pick! Both enantiomers of chiral tertiary and quaternary carbon centers can be constructed regioselectively, stereospecifically, and stereodivergently in copper-mediated allylic substitutions with Grignard and organozinc reagents. The trick is to employ a switchable directing/nondirecting leaving group.

    10. An Environmentally Benign Process for the Hydrogenation of Ketones with Homogeneous Iron Catalysts (pages 598–604)

      Stephan Enthaler, Bernhard Hagemann, Giulia Erre, Kathrin Junge and Matthias Beller

      Article first published online: 28 SEP 2006 | DOI: 10.1002/asia.200600105

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      Good things come in threes: Iron complexes composed of an iron salt, a tridentate nitrogen ligand, and a phosphine catalyze the transfer hydrogenation of various ketones homogeneously by utilizing 2-propanol as a hydrogen donor in the presence of base. The products are obtained in excellent yield and chemoselectivity.

    11. Microwave-Assisted Synthesis of a Superparamagnetic Surface-Functionalized Porous Fe3O4/C Nanocomposite (pages 605–610)

      Xianluo Hu and Jimmy C. Yu

      Article first published online: 5 SEP 2006 | DOI: 10.1002/asia.200600111

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      One small mass: Biocompatible Fe3O4/C nanocomposite materials can be synthesized by a simple, low-cost, and green hydrothermal reaction. These materials possess porous structures and exhibit superparamagnetic behavior, and may find applications in catalysis, separation, adsorption, and bionanotechnology.

    12. Ring-Closing Olefin Metathesis for the Synthesis of Benzene Derivatives (pages 611–613)

      Kazuhiro Yoshida, Fumihiro Kawagoe, Noriyuki Iwadate, Hidetoshi Takahashi and Tsuneo Imamoto

      Article first published online: 28 SEP 2006 | DOI: 10.1002/asia.200600133

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      Real Cool Mix: Benzene derivatives can be synthesized from 1,4,7-trien-3-ols by tandem ruthenium-catalyzed ring-closing olefin metathesis (RCM)/dehydration. The method can also be extended to the tandem RCM/oxidation process for phenol and aniline derivatives, and has many advantages over conventional routes.

    13. Removal of Toxic Metal-Ion Pollutants from Water by Using Chemically Modified Carbon Powders (pages 614–622)

      Lei Xiao, Gregory G. Wildgoose, Alison Crossley, Robert Knight, John H. Jones and Richard G. Compton

      Article first published online: 11 OCT 2006 | DOI: 10.1002/asia.200600136

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      “Out, damned spot!” Modified carbon powders were developed and optimized to adsorb irreversibly large quantities of toxic heavy metals such as CuII, CdII, and in particular AsIII from aqueous media rapidly and effectively. These materials have the potential to be used in both environmental remediation and filtration of drinking water, particularly in developing countries. (l.o.d.=Limits of detection.)

    14. Comparative Theoretical Study of N-Heterocyclic Carbenes and Other Ligands Bound to AuI (pages 623–628)

      Pekka Pyykkö and Nino Runeberg

      Article first published online: 11 OCT 2006 | DOI: 10.1002/asia.200600181

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      Gold bonds: N-heterocyclic carbenes (NHCs) bind to AuCl and Au+ more strongly than several other ligands such as phosphanes. The ligand behavior of NHCs can also be modeled with diazocyclopropene (CN2, shown) and cyclopropenylidene.

  6. Preview

    1. Top of page
    2. Cover Picture
    3. Graphical Abstract
    4. Corrigendum
    5. Focus Review
    6. Full Papers
    7. Preview
    1. You have free access to this content
      Preview: Chem. Asian J. 5/2006 (page 633)

      Article first published online: 11 OCT 2006 | DOI: 10.1002/asia.200690009

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