Chemistry – An Asian Journal

Cover image for Vol. 4 Issue 7

July 6, 2009

Volume 4, Issue 7

Pages 1015–1151

  1. Cover Picture

    1. Top of page
    2. Cover Picture
    3. Graphical Abstract
    4. Corrigendum
    5. News
    6. Focus Reviews
    7. Communications
    8. Full Papers
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    1. Cover Picture: Reverse-Selective Microporous Membrane for Gas Separation (Chem. Asian J. 7/2009) (page 1015)

      Ken-ichi Sawamura, Teruaki Izumi, Kiyotoshi Kawasaki, Shintaro Daikohara, Tetsu Ohsuna, Mitsuko Takada, Yasushi Sekine, Eiichi Kikuchi and Masahiko Matsukata

      Article first published online: 29 JUN 2009 | DOI: 10.1002/asia.200990020

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      Reverse-selective membranes, through which bigger molecules selectively permeate, are attractive for developing chemical processes utilizing hydrogen because they can maintain the high partial pressure of hydrogen required for further downstream utilization. Although several of these chemical processes are operated above 473 K, membranes with outstanding reverse-selective separation performance at these temperatures are still to be reported. M. Matsukata et al. propose a new adsorption-based reverse-selective membrane that utilizes a Na cation occluded in a zeolitic framework. The membrane developed in this work enables selective permeation and separation of bigger polar molecules, such as methanol and water, from hydrogen above 473 K. For more information, see their Full Paper on page 1070 ff.

  2. Graphical Abstract

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    3. Graphical Abstract
    4. Corrigendum
    5. News
    6. Focus Reviews
    7. Communications
    8. Full Papers
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    1. Graphical Abstract: Chem. Asian J. 7/2009 (pages 1016–1022)

      Article first published online: 29 JUN 2009 | DOI: 10.1002/asia.200990021

  3. Corrigendum

    1. Top of page
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    3. Graphical Abstract
    4. Corrigendum
    5. News
    6. Focus Reviews
    7. Communications
    8. Full Papers
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      Iron- and Ruthenium-Lewis Acid Catalyzed Asymmetric 1,3-Dipolar Cycloaddition Reactions between Enals and Diaryl Nitrones (pages 1021–1022)

      Andrei Bădoiu, Gerald Bernardinelli, Jiri Mareda, E. Peter Kündig and Florian Viton

      Article first published online: 29 JUN 2009 | DOI: 10.1002/asia.200990022

      This article corrects:
  4. News

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

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

      Facile Synthesis of Ultrathin and Single-Crystalline Au Nanowires (pages 1028–1034)

      Chao Wang and Shouheng Sun

      Article first published online: 17 MAR 2009 | DOI: 10.1002/asia.200900002

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      Thin is in! Recent advance in solution-phase synthesis has led to the formation of ultrathin single-crystalline Au nanowires with diameters of less than 10 nm. This Focus Review summarizes these syntheses and provides an exciting example of the electron transport in the ultrathin Au nanowires to demonstrate their great potential for nanoelectronic applications.

    2. Cascade Reactions

      Recent Advances in the Synthesis of Indole and Quinoline Derivatives through Cascade Reactions (pages 1036–1048)

      José Barluenga, Félix Rodríguez and Francisco J. Fañanás

      Article first published online: 9 APR 2009 | DOI: 10.1002/asia.200900018

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      One right after the other: Cascade reactions represent an efficient method for accessing highly functionalized final products from simple starting materials in a single synthetic operation. This Focus Review surveys the most representative and interesting recent reports on the synthesis of indoles and quinolines through cascade reactions.

  6. Communications

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    3. Graphical Abstract
    4. Corrigendum
    5. News
    6. Focus Reviews
    7. Communications
    8. Full Papers
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    1. Gold Nanoparticles

      A General Strategy for the Biosynthesis of Gold Nanoparticles by Traditional Chinese Medicines and Their Potential Application as Catalysts (pages 1050–1054)

      Jiale Huang, Wenta Wang, Liqin Lin, Qingbiao Li, Wenshuang Lin, Mei Li and Stephen Mann

      Article first published online: 26 MAY 2009 | DOI: 10.1002/asia.200900064

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      Tea time! Gold nanoparticles (GNPs) could be readily prepared by a general strategy involving the reduction of aqueous HAuCl4 in the presence of traditional Chinese medicines (TCMs). Spheroidal and triangular gold nanoparticles were observed depending on the TCM used. The strategy exemplified the universal application of plant bioresources for the synthesis of GNPs and catalytic purposes.

    2. Gold Nanostructures

      Hydrogen-Bond-Assisted “Gold Cold Fusion” for Fabrication of 2D Web Structures (pages 1055–1058)

      Saikat Mandal, Atsuomi Shundo, Somobrata Acharya, Jonathan P. Hill, Qingmin Ji and Katsuhiko Ariga

      Article first published online: 17 MAR 2009 | DOI: 10.1002/asia.200900037

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      Keeping their cool: Fabrication of a 2D weblike nanonetwork of gold was successfully demonstrated through a two-step procedure including complexation of gold precursors to a weblike supramolecular assembly of surfactant followed by in situ reduction of the precursors to gold. Molecular assemblies stabilized by hydrogen bonding provided a sound template, leading to the highly integrated structure of gold through room-temperature (cold) nanostructure fusion.

    3. Mesoporous Channels

      Oriented Growth of Small Mesochannels Utilizing a Porous Anodic Alumina Substrate: Preparation of Continuous Film with Standing Mesochannels (pages 1059–1063)

      Yusuke Yamauchi, Tomota Nagaura and Satoru Inoue

      Article first published online: 2 JUN 2009 | DOI: 10.1002/asia.200900052

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      Standing mesochannels: An “oriented growth on the mesoscale” is demonstrated for the formation of standing mesochannels. The standing mesochannels in the continuous film grow epitaxially from the mesochannels oriented along the straight holes of porous anodic alumina substrate.

  7. Full Papers

    1. Top of page
    2. Cover Picture
    3. Graphical Abstract
    4. Corrigendum
    5. News
    6. Focus Reviews
    7. Communications
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    1. Photochemistry

      Addressable DNA–Myoglobin Photocatalysis (pages 1064–1069)

      Chi-Hsien Kuo, Ljiljana Fruk and Christof M. Niemeyer

      Article first published online: 29 JUN 2009 | DOI: 10.1002/asia.200900082

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      In the spotlight: A hybrid myoglobin, containing a single-stranded DNA anchor and a redox-active ruthenium moiety tethered to the heme center can be used as a photocatalyst. The catalyst can be selectively immobilized on a surface-bound complementary DNA molecule and thus readily recycled from complex reaction mixtures. This principle may be applied to a range of heme-dependent enzymes allowing the generation of novel light-triggered photocatalysts.

    2. Gas Separation

      Reverse-Selective Microporous Membrane for Gas Separation (pages 1070–1077)

      Ken-ichi Sawamura, Teruaki Izumi, Kiyotoshi Kawasaki, Shintaro Daikohara, Tetsu Ohsuna, Mitsuko Takada, Yasushi Sekine, Eiichi Kikuchi and Masahiko Matsukata

      Article first published online: 9 JUN 2009 | DOI: 10.1002/asia.200900048

      Thumbnail image of graphical abstract

      Sort the bigs from the smalls: Reverse-selective membranes, through which bigger molecules selectively permeate, are attractive for developing chemical processes. A new adsorption-based reverse-selective membrane that utilizes a Na cation occluded in a zeolitic framework is presented. The membrane developed enables the selective permeation and separation of bigger polar molecules, such as methanol and water, from hydrogen above 473 K.

    3. Isomerization

      Cobalt-Catalyzed Isomerization of 1-Alkenes to (E)-2-Alkenes with Dimethylphenylsilylmethylmagnesium Chloride and Its Application to the Stereoselective Synthesis of (E)-Alkenylsilanes (pages 1078–1083)

      Tsuneyuki Kobayashi, Hideki Yorimitsu and Koichiro Oshima

      Article first published online: 28 MAY 2009 | DOI: 10.1002/asia.200900111

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      “Co”axing selectivity into isomerization: Treatment of 1-alkenes with dimethylphenylsilylmethylmagnesium chloride in the presence of a cobalt-NHC complex in dioxane at 50 °C or higher provides the corresponding (E)-2-alkenes selectively. The isomerization is applicable to the stereoselective synthesis of (E)-crotylsilanes and (E)-1-propenylsilanes from the corresponding homoallylsilanes and allylsilanes, respectively.

    4. Nanomaterials

      Methodical Thermolysis of [Ba2Ti2(thd)4(OnPr)8(nPrOH)2] under Autogenous Pressure Followed by Combustion for the Synthesis of Dielectric Tetragonal BaTiO3 Nanopowder (pages 1084–1091)

      Vilas G. Pol, P. Thiyagarajan, Jose M. Calderon Moreno, Monica Popa, Vadim G. Kessler, Suresh Gohil and Gulaim A. Seisenbaeva

      Article first published online: 28 MAY 2009 | DOI: 10.1002/asia.200900077

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      Tetragonal powders: Dielectric tetragonal BaTiO3 nanopowder was synthesized in a solvent-less, efficient process by the thermolysis of a single [Ba2Ti2(thd)4(OnPr)8(nPrOH)2] precursor in a closed reactor at 700 °C under autogenous pressure, followed by combustion. The BaTiO3 nanopowder is characterized thoroughly, employing advanced morphological, compositional, structural, and thermal techniques, and the dielectric constant is accounted.

    5. An Amphiphilic Resin-dispersion of Nanoparticles of Platinum (ARP-Pt): A Highly Active and Recyclable Catalyst for the Aerobic Oxidation of a Variety of Alcohols in Water (pages 1092–1098)

      Yoichi M. A. Yamada, Takayasu Arakawa, Heiko Hocke and Yasuhiro Uozumi

      Article first published online: 22 MAY 2009 | DOI: 10.1002/asia.200800478

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      Please recycle! An amphiphilic polystyrene-poly(ethylene glycol) resin-dispersion of nanoparticles of platinum (ARP-Pt) is developed, with the nanoparticles exhibiting a narrow size distribution throughout the resin. ARP-Pt offers a sustainable chemistry alternative as a useful and readily recyclable catalyst for the aerobic oxidation of a wide variety of alcohols.

    6. Mesogenic Materials

      Microwave-assisted Synthesis, Structure, and Tunable Liquid-Crystal Properties of 2,5-Diaryl-1,3,4-Thiadiazole Derivatives through Peripheral n-Alkoxy Chains (pages 1099–1107)

      Jie Han, Xiao-Yong Chang, Li-Rong Zhu, Mei-Li Pang, Ji-Ben Meng, Stephen Sin-Yin Chui, Siu-Wai Lai and V. A. L. Roy

      Article first published online: 2 JUN 2009 | DOI: 10.1002/asia.200800440

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      Chain change: Variations in the position, number, and chain length of the n-alkoxy chains readily tune the liquid-crystalline properties of 2,5-diaryl-1,3,4-thiadiazole derivatives from smectic to hexagonal columnar mesophases at room temperature. The calamitic S-heterocyclic compounds show electrical conductivity in both solid and liquid-crystal states.

    7. Mesoporous Materials

      Highly Ordered Mesoporous Carbon as Catalyst for Oxidative Dehydrogenation of Ethylbenzene to Styrene (pages 1108–1113)

      Dang Sheng Su, Juan Jose Delgado, Xi Liu, Di Wang, Robert Schlögl, Lifeng Wang, Zhe Zhang, Zhichao Shan and Feng-Shou Xiao

      Article first published online: 21 MAY 2009 | DOI: 10.1002/asia.200800424

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      Highly active, selective, and stable: Highly ordered mesoporous carbon without deposition of metal particles catalyzes the oxidative dehydrogenation of ethyl benzene to styrene. A high activity and selectivity as well as long catalytic stability when compared with activated carbon, is observed from this catalyst.

    8. Glycosidation

      Efficient Synthesis of the Deoxysugar Part of Versipelostatin by Direct and Stereoselective Glycosylation and Revision of the Structure of the Trisaccharide Unit (pages 1114–1125)

      Hiroshi Tanaka, Atsushi Yoshizawa, Shuhei Chijiwa, Jun-ya Ueda, Motoki Takagi, Kazuo Shin-ya and Takashi Takahashi

      Article first published online: 3 APR 2009 | DOI: 10.1002/asia.200800448

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      Sweets for my sweet! Efficient synthesis of the deoxysugar part of versipelostatin (VST) was achieved by direct and stereoselective glycosidation of the reduced VST aglycon. Comparison of the synthetic and natural VST products using NMR indicate that VST has a β-d-digitoxose-(1,4)-α-l-oleandrose-(1,4)-β-d-digitoxose trisaccharide. A biological assay indicates that the deoxyoligosaccharide unit of the synthetic glycoside is important for biological activity.

    9. Porphyrins

      Post-Modification of meso–meso-Linked Porphyrin Arrays by Iridium and Rhodium Catalyses for Tuning of Energy Gap (pages 1126–1133)

      Jinping Chen, Naoki Aratani, Hiroshi Shinokubo and Atsuhiro Osuka

      Article first published online: 26 MAY 2009 | DOI: 10.1002/asia.200900053

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      Skillfully attached!meso–meso-Linked diporphyrins can be efficiently and selectively functionalized with multiple unsaturated carboxylic acid groups through iridium and rhodium catalyses. This post-modification strategy allows fine-tuning of energy levels of each porphyrin unit.

    10. Peptidomimetics

      Metal-Catalyzed Derivatization of Cα-Tetrasubstituted Amino Acids and Their Use in the Synthesis of Cyclic Peptides (pages 1134–1140)

      Andreas Grauer, Andreas Späth, Dawei Ma and Burkhard König

      Article first published online: 26 MAY 2009 | DOI: 10.1002/asia.200900033

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      Making circles with N and O: Cyclic tripeptides containing an unnatural Cα-tetrasubstituted THF amino acid are prepared by copper(I) and palladium(0)-catalyzed N- and O-arylation reactions. The reactions give access to side chain-modified derivatives of the unnatural amino acid and macrocyclic peptidomimetics.

    11. Photoconductive Materials

      UV/Vis to NIR Photoconduction in Cyclopalladated Complexes (pages 1141–1146)

      Nicolas Godbert, Davide Dattilo, Roberto Termine, Iolinda Aiello, Anna Bellusci, Alessandra Crispini, Attilio Golemme and Mauro Ghedini

      Article first published online: 11 MAY 2009 | DOI: 10.1002/asia.200900023

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      Funky discotics: Photoconductivity is measured in newly synthesized cyclopalladated metallomesogens exhibiting hexagonal columnar mesophases at room temperature. The tuning of the HOMO/LUMO energy levels by modification of the chain/core linkage (ester 1 vs ether 2) makes compound 2 photoconductive across the whole UV/Vis/NIR range.

  8. Preview

    1. Top of page
    2. Cover Picture
    3. Graphical Abstract
    4. Corrigendum
    5. News
    6. Focus Reviews
    7. Communications
    8. Full Papers
    9. Preview
    1. Preview: Chem. Asian J. 8/2009 (page 1151)

      Article first published online: 29 JUN 2009 | DOI: 10.1002/asia.200990024

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