Chemistry Letters
Online ISSN : 1348-0715
Print ISSN : 0366-7022
ISSN-L : 0366-7022
Volume 43 , Issue 10
Showing 1-49 articles out of 49 articles from the selected issue
Highlight Review
  • Tatsushi Imahori, Seiji Kurihara
    2014 Volume 43 Issue 10 Pages 1524-1531
    Published: October 05, 2014
    Released: October 05, 2014
    [Advance publication] Released: August 23, 2014
    JOURNALS FREE ACCESS
    This highlight review focuses on stimuli-responsive cooperative catalysts that reversibly switch the catalytic function on the basis of the dynamic conformation changes induced by external stimuli. Such enzyme-like switchable catalysts realize spatiotemporal control of chemical reactions, which can operate multiple regulations of chemical reaction(s) to realize anomalous chemical transformations. Although the progress is still small in present stage, this type of catalysts could open up new possibilities in various fields of scientific researches as well as synthetic chemistry.
    Stimuli-responsive cooperative catalysts that reversibly switch the catalytic function on the basis of the dynamic conformation changes induced by external stimuli have been incrementally developed in recent years. Such enzyme-like switchable catalysts realize spatiotemporal controls of chemical reactions, which can operate multiple regulations of chemical reaction(s) to realize anomalous chemical transformations. In this highlight review, recent progresses of the stimuli-responsive dynamic cooperative catalysts toward spatiotemporal control of chemical reactions are summarized. Fullsize Image
     
Letter
Editor’s Choice
  • Jiawen Zeng, Ben Wang, Yabin Zhang, Huan Zhu, Zhiguang Guo
    2014 Volume 43 Issue 10 Pages 1566-1568
    Published: October 05, 2014
    Released: October 05, 2014
    [Advance publication] Released: July 11, 2014
    JOURNALS OPEN ACCESS
    The lotus leaf is known as one of the natural self-cleaning plants, which can easily roll off water but not oil droplets. Herein, a simple chemical bath deposition method to fabricate superhydrophobic and strong oleophobic surfaces was presented on porous substrates such as fabrics and nickel foams. The resultant substrates exhibited excellent superhydrophobicity and good oil repellency. More significantly, such surfaces possessed self-cleaning property for water, as well as to oils such as glycerol and rapeseed oil.
Letter
  • Takahiro Tamura, Takashi Yanase, Taro Nagahama, Makoto Wakeshima, Yuki ...
    2014 Volume 43 Issue 10 Pages 1569-1571
    Published: October 05, 2014
    Released: October 05, 2014
    [Advance publication] Released: July 16, 2014
    JOURNALS RESTRICTED ACCESS
    We demonstrate a new doping technique for chemical vapor deposition (CVD) growth of diamond. The method involves immersing a solid-state dopant source into the plasma during microwave plasma-assisted CVD. We applied this simple and versatile technique to the growth of boron-doped diamond. The grown films were characterized by X-ray diffraction (XRD), Raman microscopy, glow discharge optical emission spectroscopy (GDOES), and electrical conductivity measurements. The average concentration of boron was 0.5 atom % and the conductivity was 1.5 × 10−2 Ω cm, which showed irregular behavior at low temperature.
Editor’s Choice
  • Ryo Ishikawa, Naoto Yoshida, Yusuke Akao, Yusuke Kawabe, Makoto Inai, ...
    2014 Volume 43 Issue 10 Pages 1572-1574
    Published: October 05, 2014
    Released: October 05, 2014
    [Advance publication] Released: July 17, 2014
    JOURNALS OPEN ACCESS
    Total syntheses of (+)-sesamin (1a) and (+)-sesaminol (1b), which are major components of sesame lignans derived from Sesamum indicum, were accomplished in a highly stereocontrolled manner. Key steps include an L-proline-catalyzed cross-aldol reaction, which was accelerated with the aid of bifunctional urea 7, and the construction of a furofuran lignan skeleton through a quinomethide intermediate.
Letter
Editor’s Choice
  • Yoshiaki Shoji, Shohei Kaneda, Hiroyuki Fueno, Kazuyoshi Tanaka, Kohei ...
    2014 Volume 43 Issue 10 Pages 1587-1589
    Published: October 05, 2014
    Released: October 05, 2014
    [Advance publication] Released: June 18, 2014
    JOURNALS OPEN ACCESS
    The first isolable diborane(4) containing terminal B–H bonds, protected by the bulky 1,1,7,7-tetramethyl-3,3,5,5-tetrapropyl-s-hydrindacen-4-yl (MPind) groups, was synthesized as air- and moisture-sensitive colorless crystals. The structure and bonding nature of this H-terminal diborane(4), characterized by X-ray crystallography, NMR studies, and DFT calculations, were compared to those of the previously reported isomer, a doubly H-bridged butterfly-shaped diborane(4) bearing the less bulky 1,1,3,3,5,5,7,7-octaethyl-s-hydrindacen-4-yl (Eind) groups. The two distinct structures of these dihydro-diborane(4) compounds may be primarily attributed to the intramolecular steric effects of the bulky protecting groups.
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