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Vol. 82, No. 7 (July, 2009)
[PDF version]
| The Chemical Society of Japan Award for Creative Work for 2007 | Web Release Date: July 10, 2009
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| 751-777
Looking at Molecular Orbitals in Three-Dimensional Form: From Dream to Reality
M. Takahashi
[Full Text PDF(J-STAGE)]
Free Access Article
 | A triple coincidence spectrometer has been developed, which can visualize molecular orbital patterns in three-dimensional form through measurements of vector correlations between the two outgoing electrons and the fragment ion produced in electron Compton scattering. |
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| The Chemical Society of Japan Award for Young Chemists for 2008 | Web Release Date: July 10, 2009
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| 778-792
Metal-Mediated Retro-Allylation of Homoallyl Alcohols for Highly Selective Organic Synthesis
H. Yorimitsu* and K. Oshima*
[Full Text PDF(J-STAGE)]
Free Access Article
Metal-mediated or -catalyzed retro-allylation of homoallyl alcohol that proceeds via a six-membered transition state has emerged as a new useful method to prepare allylmetals.
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Web Release Date: July 10, 2009
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| 793-805
Synthesis and Properties of Stable 1,2-Bis(metallocenyl)disilenes: Novel d–π Conjugated Systems with a Si=Si Double Bond
A. Yuasa, T. Sasamori, Y. Hosoi, Y. Furukawa, and N. Tokitoh*
[Full Text PDF(J-STAGE)]
Free Access Article
Stable 1,2-bis(metallocenyl)disilenes were synthesized for the first time and characterized by spectroscopic and X-ray crystallographic analyses. They are novel d–π conjugated systems containing a disilene unit.
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Web Release Date: July 10, 2009
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| 806-812
Melting and Crystallization Behaviors of an Ionic Liquid, 1-Isopropyl-3-methylimidazolium Bromide, Studied by Using Nanowatt-Stabilized Differential Scanning Calorimetry
K. Nishikawa,* S. Wang, T. Endo, and K. Tozaki
[Full Text PDF(J-STAGE)]
 | DSC traces of [i-C3mim]Br. Two types of conformers of the cation, Asym and Sym, coexist in supercooled liquid and liquid states, while only Asym conformers form crystals. Melting and crystallization occur accompanying the conformational change between Asym and Sym. |
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Web Release Date: July 10, 2009
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| 813-815
Colorimetric Recognition of d10 Metal Ions through an Adenine-Based ICT Probe
K. K. Upadhyay,* A. Kumar, R. K. Mishra, and R. Prasad
[Full Text PDF(J-STAGE)]
[Supporting Information]
An intramolecular charge-transfer (ICT) probe constructed upon the framework of adenine has been used for the colorimetric recognition of d10 metal ions in DMSO. The same probe as an anion sensor in DMSO has already been established by us.
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Web Release Date: July 10, 2009
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| 816-818
Ferromagnetic Assemblies Composed of MnIII Salen-Type Complexes and a Tripodal FeIII Complex with an Imidazolate Bridge
R. Ishikawa, H. Miyasaka,* and M. Yamashita
[Full Text PDF(J-STAGE)]
[Supporting Information]
The use of a low-spin FeIII complex bearing three imidazolate groups in the assembly with MnIII salen-type complexes provided two different imidazolate-bridged MnIII–FeIII assemblies, a dinuclear complex and a one-dimensional chain, dependent on the salen ligand and counter ion used. Both compounds exhibit a ferromagnetic exchange between MnIII and FeIII centers via the imidazolate linkage.
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Web Release Date: July 10, 2009
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| 819-828
Bromine Adducts of 9,10-Diheteratriptycene Derivatives
Y. Uchiyama, J. Sugimoto, M. Shibata, G. Yamamoto, and Y. Mazaki*
[Full Text PDF(J-STAGE)]
Both of the bromine adducts of a 9-phospha-10-stibatriptycene and a 9,10-distibatriptycene have a zwitterionic structure composed of a bromophosphonium/bromostibonium cation and a tribromostiborate anion in the crystalline state.
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Web Release Date: July 10, 2009
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| 829-842
A Convenient Access to (All-rac)-α-Tocopherol Acetate from Linalool and Dihydromyrcene
V. Gembus, N. Sala-Jung, and D. Uguen*
[Full Text PDF(J-STAGE)]
Refluxing TMHQ in dodecane/CH2Cl2 with linalool and camphorsulfonic acid mainly afforded two regioisomeric chromanols, which were converted to the title acetate in few steps.
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Web Release Date: July 10, 2009
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| 843-854
Efficient Access to (All-rac)-α-Tocopherol Acetate by a Crombie Chromene Synthesis
V. Gembus, N. Sala-Jung, and D. Uguen*
[Full Text PDF(J-STAGE)]
In contrast to reports in the literature, reacting TMHQ with citral dimethyl acetal in pyridine afforded a chromenol, which was converted to the title acetate in few steps.
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Web Release Date: July 10, 2009
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| 855-859
Isolation and Reaction of 1,2-Dithietan-3-one: Formation of Thiolato Thiocarboxylato Metal Complexes
T. Shigetomi, K. Okuma,* N. Nagahora, and Y. Yokomori
[Full Text PDF(J-STAGE)]
[Supporting Information]
 | Dithietan-3-ones were synthesized by the reaction of α-dithiolactones with nitrile oxide. The reaction of 4,4-di-tert-butyl-1,2-dithietan-3-one with triphenylphosphine or phenylmagnesium bromide afforded 1,1-di-tert-butylthiiran-2-one or S-phenyl 2-tert-butyl-2-mercapto-3,3-dimethylbutanethioate in good yields. |
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Web Release Date: July 10, 2009
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| 860-869
Synthesis and Photophysical Properties of N-Arylcarbazolophanes
H. Shimizu, Y. Kakinoya, K. Takehira, T. Yoshihara, S. Tobita, Y. Nakamura,* and J. Nishimura
[Full Text PDF(J-STAGE)]
[Supporting Information]
Two carbazolophanes bearing benzene or naphthalene rings on the nitrogen atoms were synthesized, and their photophysical properties were investigated in detail based on the absorption, fluorescence, phosphorescence, and transient absorption spectra.
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Web Release Date: July 10, 2009
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| 870-878
Substituent Effect of Imino-O-arenesulfonates, a Coupling Partner in Suzuki–Miyaura Reaction for Substitution of the Pyrazine Ring: A Study for the Synthesis of Coelenterazine Analogs
A. Makarasen, M. Kuse, T. Nishikawa, and M. Isobe*
[Full Text PDF(J-STAGE)]
The substituent effect of imino-O-arenesulfonates demonstrated a major difference in the reactivity of the cross-coupling reactions when changing from electron-donating to electron-withdrawing groups at the para position of arenesulfonates. Aryltrifluoroborates worked well in this reaction to obtain the coupling products in excellent yields.
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Web Release Date: July 10, 2009
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| 879-890
Preparation, Structures, and Properties of New Monocarbenium Ion Compounds Stabilized by a 3-Guaiazulenyl Group and an Azobenzene Unit: Comparative Studies on Three Delocalized π-Electron Systems
S. Takekuma,* K. Fukuda, Y. Kawase, T. Minematsu, and H. Takekuma
[Full Text PDF(J-STAGE)]
Reactions of guaiazulene with three azobenzene-4-carbaldehydes in methanol in the presence of hexafluorophosphoric acid (or tetrafluoroboric acid) at 25 °C for 2 h give the corresponding new monocarbenium ion compounds 5–7a (or 7b), quantitatively.
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Web Release Date: July 10, 2009
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| 891-895
Baeyer–Villiger Oxidation of Cycloalkanones with In Situ Generated Hydrogen Peroxide from Alcohols and Molecular Oxygen Using NHPI as a Key Catalyst
K. Kamae, Y. Obora, and Y. Ishii*
[Full Text PDF(J-STAGE)]
 | One-pot Baeyer–Villiger oxidation of cycloalkanones to lactones with H2O2 generated in situ from benzhydrol by N-hydroxyphthalimide (NHPI) and AIBN was successfully achieved. The present method provides an alternative synthetic route to lactones from cycloalkanes using sec-alcohols and O2 by NHPI. |
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Web Release Date: July 10, 2009
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| 896-909
Highly Coplanar Polythiophenes with –C≡CR Side Chains: Self-Assembly, Linear and Nonlinear Optical Properties, and Piezochromism
T. Yamamoto,* T. Sato, T. Iijima, M. Abe, H. Fukumoto, T. Koizumi, M. Usui, Y. Nakamura, T. Yagi, H. Tajima, T. Okada, S. Sasaki, H. Kishida, A. Nakamura, T. Fukuda, A. Emoto, H. Ushijima, C. Kurosaki, and H. Hirota
[Full Text PDF(J-STAGE)]
[Supporting Information] Open Access Article
π-Conjugated polythiophenes with –C≡CR side chains and controlled main chain structures show a strong tendency to self-assemble. Their basic optical properties have been revealed.
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Web Release Date: July 10, 2009
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| 910-913
Optical Properties and Chemical Compositions of Iodine-Containing Aerosols Produced from the Atmospheric Photolysis of Methylene Iodide in the Presence of Ozone
Y. Sakamoto, A. Yabushita, M. Kawasaki,* T. Nakayama, and Y. Matsumi
[Full Text PDF(J-STAGE)]
 | The present results suggest that the atmospheric photolysis of methylene iodide in the presence of ozone produces aerosols containing iodine oxides, which show scattering and also a weak absorption in the visible region. |
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Web Release Date: July 10, 2009
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| 914-916
Remarkably Stabilized Charge Separations in Inorganic Nanospace
T. Yui,* T. Tsuchino, H. Mino, T. Kajino, S. Itoh, Y. Fukushima, and K. Takagi*
[Full Text PDF(J-STAGE)]
[Supporting Information]
 | A remarkably stable and continuous photoinduced charge separation with a half lifetime longer than 2.5 h in ambient atmosphere was observed at the interface of mesoporous silica and titania nanosheets involving porphyrins and viologen in their nanospaces, respectively. |
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