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BCSJ Award Article (2008)
The Bulletin of the Chemical Society of Japan, Vol. 81 (No. 1-12)
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2008 Vol. 81 Dec.
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| 1567-1574 |
Preparation and Characterization of Spherical and Balloon-Like Calcium Phosphate Particles
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K. Kandori,* K. Tada, M. Fukusumi, and Y. Morisada
[Full Text PDF(J-STAGE)]
Calcium phosphate particles were prepared by aging a solution of CaCl2 and Na5P3O10 at 100–150 °C. The solid spherical particles were produced up to the aging temperature of 115 °C but transparent balloon-like hollow spheres were precipitated at 120 °C.
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2008 Vol. 81 Nov.
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| 1393-1401 |
Reactions and Mechanistic Studies of Rhenium-Catalyzed Insertion of α,β-Unsaturated Carbonyl Compounds into a C–H Bond
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Y. Kuninobu,* Y. Nishina, K. Okaguchi, M. Shouho, and K. Takai*
[Full Text PDF(J-STAGE)]
A rhenium complex, [ReBr(CO)3(thf)]2, catalyzes the insertion of α,β-unsaturated carbonyl compounds into a C–H bond of aromatic compounds. When imines are employed as the aromatic substrates, sequential cyclization proceeds, and indene derivatives are obtained. The reaction mechanisms are also investigated.
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2008 Vol. 81 Oct.
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| 1212-1218 |
Mechanism and Kinetics of Cyanide Decomposition by Ferrate
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T. Kamachi, T. Nakayama, and K. Yoshizawa*
[Full Text PDF(J-STAGE)]
The mechanism of cyanide oxidation by ferrate in water is discussed using DFT computations. The reaction is initiated by a direct attack of an oxo group of ferrate to the carbon atom of cyanide, followed by an H-atom transfer from cyanide to another oxo group to form an intermediate having cyanate (NCO−). The produced cyanate is oxidized by an oxo ligand of ferrate and exogenous oxygen molecule to CO2 and NO2−.
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2008 Vol. 81 Sep.
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| 1053-1061 |
Catalytic Behavior of Cationic Hydridoruthenium(II) Complex, [RuH(NH3)(PMe3)4]+, in H2-Hydrogenation and Transfer Hydrogenation of Imines
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Y. Kayaki, H. Ikeda, J. Tsurumaki, I. Shimizu, and A. Yamamoto*
[Full Text PDF(J-STAGE)]
The cationic hydridoruthenium complex, cis-[RuH(NH3)(PMe3)4]+PF6−,
derived from cis-[RuH2(PMe3)4] and NH4PF6, showed higher catalytic activity for H2-hydrogenation and tranfer hydrogenation of imines than neutral complexes. On the basis of deuterium labeling experiments the mechanism of the transfer hydrogenation is discussed.
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2008 Vol. 81 August
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| 927-937 |
Surface Modification of TaON with Monoclinic ZrO2 to Produce a Composite Photocatalyst with Enhanced Hydrogen Evolution Activity under Visible Light |
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K. Maeda, H. Terashima, K. Kase, M. Higashi, M. Tabata, and K. Domen*
[Full Text PDF(J-STAGE)] [Supporting Information]
A composite material consisting of TaON and monoclinic ZrO2 (m-ZrO2), which is prepared by nitridation of m-ZrO2/Ta2O5 composite, exhibits higher visible-light photocatalytic activity for H2 evolution than TaON.
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2008 Vol. 81 July
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| 796-819 |
Synthesis of Rubrivivax gelatinosus Lipid A and Analogues for Investigation of the Structural Basis for Immunostimulating and Inhibitory Activities |
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Y. Fukase, Y. Fujimoto,* Y. Adachi, Y. Suda, S. Kusumoto, and K. Fukase*
[Full Text PDF(J-STAGE)]
To elucidate the structural requirements for immunologically active lipid A derivatives, we synthesized Rubrivivax gelatinosus lipid A and its new analogues focusing on the effects of acyl moieties and acidic groups at 1-position, with an affinity separation method.
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2008 Vol. 81 June
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| 689-696 |
Synthesis of Diketones and ω-Hydroxy Ketones from Methyl Ketones and α,ω-Diols by an [IrCl(cod)]2/PPh3/KOH System |
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K. Maeda, Y. Obora, S. Sakaguchi, and Y. Ishii*
[Full Text PDF(J-STAGE)] [Supporting Information]
ω-Hydroxy ketones and diketones, which are important starting materials for the synthesis of cycloalkanones and heterocyclic compounds, were prepared by one-step reaction of methyl ketones with α,ω-diols under the influence of an iridium complex and a base.
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2008 Vol. 81 May
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| 562-573 |
Acid-Catalyzed Reactions of Sarcophytoxide, a Marine
Cembranoid: An Apparently Enantio-Directive Reaction, Unusual Products and Stereochemical Reconsideration of Epoxide–Ketone Rearrangement |
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K. Nii, K. Tagami, M. Kijima, T. Munakata, T. Ooi, and T. Kusumi*
[Full Text PDF(J-STAGE)]
Perchloric acid treatment of sarcophytoxide, a marine cembranoid possessing an epoxide, brought about epoxide–ketone rearrangement affording ketones. The stereochemistry indicated that the epoxide–ketone rearrangement took a course via a cationic intermediate.
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2008 Vol. 81 Apr.
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| 460-468 |
Ferromagnetic Interactions in Non-Kekulé Polymers. II
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M. Hatanaka* and R. Shiba
[Full Text PDF(J-STAGE)]
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Ferromagnetic interactions in two-dimensional non-Kekulé polymers were analyzed. We constructed two-dimensional Wannier functions in non-bonding crystal orbitals (NBCOs), and PNBCO (product of NBCO) was as their product. The ferromagnetic interactions were attributed to anti-parallel-spin instabilities in PNBCO.
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2008 Vol. 81 Mar.
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| 331-344 |
Complex Formation between a Nucleobase and Tetracyanoquinodimethane Derivatives: Crystal Structures and Transport Properties of Charge-Transfer Solids of Cytosine |
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T. Murata,* G. Saito,* K. Nishimura, Y. Enomoto, G. Honda, Y. Shimizu, S. Matsui, M. Sakata, O. O. Drozdova, and K. Yakushi
[Full Text PDF(J-STAGE)] [Supporting Information]
Charge-transfer complex formation between cytosine and R-TCNQ derivatives in MeOH yielded three kinds of ionic products; destructed R-TCNQ anion, fully ionic R-TCNQ radical anion, and mixed-valent and conductive R-TCNQ radical anion salts with hemiprotonated cytosine cations.
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2008 Vol. 81 Feb.
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| 193-219 |
Numbers of Achiral and Chiral Monosubstituted Alkanes Having a Given Carbon Content and Given Numbers of Asymmetric and Pseudoasymmetric Centers
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S. Fujita
[Full Text PDF(J-STAGE)]
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Monosubstituted alkanes are combinatorially enumerated, where the stereoisomer numbers are itemized with respect to carbon content, the number of asymmetric centers (*), and the number of pseudoasymmetric centers (†).
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2008 Vol. 81 Jan.
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| 76-83 |
Isolable Iron(II)–Porphycene Derivative Stabilized by Introduction of Trifluoromethyl Groups on the Ligand Framework
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K. Ito, T. Matsuo, I. Aritome, Y. Hisaeda, and T. Hayashi*
[Full Text PDF(J-STAGE)] [Supporting Information]
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Trifluoromethylated iron porphycene μ-oxo dimer was easily converted into the monomeric iron(II) species via the FeIII–O–FeIII bond cleavage upon dissolution in pyridine. The reduction product was quite stable and its structure was successively determined by X-ray crystallographic analysis.
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