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Vol. 79, No. 10 (October, 2006)
[PDF version]
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Web Release Date:
October 10, 2006
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1463-1475
Highly Ordered Mesoporous Organosilica Hybrid Materials
M. P. Kapoor and S. Inagaki*
[Full Text PDF(J-STAGE)] Free Access Article
The latest developments in periodic mesoporous organosilicas are summarized with an emphasis on the synthesis, extension of bridged organic groups, crystallization of pore walls, further chemical modification, and possible functions.
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October 10, 2006
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1476-1488
Carbonylative Approaches to α,β-Unsaturated Acyl Radicals and α-Ketenyl Radicals. Their Structure and Applications in Synthesis
I. Ryu,* Y. Uenoyama, and H. Matsubara
[Full Text PDF(J-STAGE)] Free Access Article
The carbonylation of vinyl radicals gives α,β-unsaturated acyl radicals. MO calculations predict that α,β-unsaturated acyl radicals and the isomeric α-ketenyl radicals are isomeric species that undergo interconversion. This represents a powerful resource for developing synthetic reactions using the reaction system.
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| Web Release Date:
October 10, 2006
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1489-1500
Photocatalytic Electron-Transfer Oxidation of Triphenylphosphine and Benzylamine with Molecular Oxygen via Formation of Radical Cations and Superoxide Ion
K. Ohkubo, T. Nanjo, and S. Fukuzumi*
[Full Text PDF(J-STAGE)] [Supporting Information] Free Access Article
9-Mesityl-10-methylacridinium ion (Acr+–Mes) acts as a photocatalyst for the oxygenation of triphenylphosphine with O2 via radical coupling of triphenylphosphine radical cation and O2•− to produce triphenylphosphine oxide. Photooxidation of benzylamine with O2 also occurs to yield PhCH2N=CHPh and hydrogen peroxide.
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| Web Release Date:
October 10, 2006
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1501-1508
Kinetic Study on the Free Radical-Scavenging and Vitamin E-Regenerating Actions of Caffeic Acid and Its Related Compounds
K. Ohara,* Y. Ichimura, K. Tsukamoto, M. Ogata, S. Nagaoka, and K. Mukai
[Full Text PDF(J-STAGE)]
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Second-order rate constants for free radical-scavenging and vitamin E-regenerating reactions of caffeic acid and its related compounds were correlated to their oxidation potential. pH Dependence suggests that proton-dissociation equilibrium affects the radical-scavenging reaction.
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| Web Release Date:
October 10, 2006
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| 1509-1518
Analysis of Short-Time Transient Dynamics of a Diffusion-Controlled Reaction in a Hard-Sphere Fluid Based on Fokker–Planck–Kramers Equation
K. Ibuki* and M. Ueno
[Full Text PDF(J-STAGE)]
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A theory based on the Fokker–Planck–Kramers equation reproduces the rate constants obtained from MD simulations over a wide density range. A small disagreement at very high densities is explained by non-Markovian effects.
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| Web Release Date:
October 10, 2006
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| 1519-1524
Infrared Spectroscopic and Density Functional Theory Studies on the Reactions of Zinc and Cadmium Atoms with Ammonia
L. Jiang and Q. Xu*
[Full Text PDF(J-STAGE)]
Reactions of zinc and cadmium atoms with ammonia in solid argon have been studied. ZnNH3 and CdNH3 were mainly produced from the reactions of ammonia with excited metal atoms. Absorptions of HZnNH2 sharply increased upon UV irradiation.
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| Web Release Date:
October 10, 2006
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| 1525-1534
Syntheses and Crystal Structures of Mono(2,2′-bipyridine)dichlorobis(dimethyl sulfoxide-S)ruthenium(II) Complexes, [RuCl2(bpy)(dmso-S)2]
M. Toyama,* K. Inoue, S. Iwamatsu, and N. Nagao*
[Full Text PDF(J-STAGE)]
Two isomers of mono(2,2′-bipyridine)ruthenium complexes, trans(Cl),cis(S)- and cis(Cl),cis(S)-[RuCl2(bpy)(dmso-S)2] (1 and 2, respectively) were selectively synthesized and characterized by X-ray crystallography. The crystal structure of the remaining isomer cis(Cl),trans(S)-[RuCl2(bpy)(dmso-S)2] (3) was also determined.
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| Web Release Date:
October 10, 2006
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| 1535-1540
Novel Platinum–Ruthenium Dinuclear Complex Bridged by 2-Aminoethanethiol
R. Okamura, T. Wada, and K. Tanaka*
[Full Text PDF(J-STAGE)]
A novel platinum–ruthenium complex ([2]2+) reacted with 2-aminoethanethiol to afford complex [4]2+, in which 2-aminoethanethiol bridges the Ru and Pt ions. Intramolecular substitution of dmso coordinated to Ru with the 2-aminoethanethiolato ligand coordinated to the Pt ion in complex [3]2+ also afforded complex [4]2+.
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| Web Release Date:
October 10, 2006
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| 1541-1546
Interaction of Aromatic Amino Acids with Metal Hexacyanochromate(III) Complexes: A Possible Role in Chemical Evolution
S. R. Ali and Kamaluddin*
[Full Text PDF(J-STAGE)]
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Cobalt(II), copper(II), and cadmium(II) hexacyanochromate(III) were found to show high adsorption affinity towards aromatic amino acids, supporting the hypothesis that insoluble metal cyanogen complexes played an active role in the concentration of biomonomers from dilute prebiotic soup in the primeval sea during the course of chemical evolution.
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| Web Release Date:
October 10, 2006
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| 1547-1551
New β-Caryophyllene-Derived Terpenoids from the Formosan Soft Coral Sinularia gibberosa
S.-P. Chen, C.-H. Chao, H.-C. Huang, Y.-C. Wu, C.-K. Lu, C.-F. Dai, and J.-H. Sheu*
[Full Text PDF(J-STAGE)]
Seven new β-caryophyllene-derived terpenoids (1–7) were isolated from EtOAc extracts of the Formosan soft coral Sinularia gibberosa. The structures of compounds 1–7 were elucidated on the basis of extensive spectroscopic analyses and by comparison with the spectral data of related metabolites. Cytotoxicity evaluation of the above metabolites towards a limited panel of cancer cell lines also will be described.
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| Web Release Date:
October 10, 2006
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| 1552-1560
Synthesis of Peduncularine
M. Kitamura,* Y. Ihara, K. Uera, and K. Narasaka
[Full Text PDF(J-STAGE)]
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Peduncularine was synthesized by using radical cyclization of an oxime induced by one-electron reduction as a key step.
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| Web Release Date:
October 10, 2006
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| 1561-1572
Syntheses of Biliverdin Derivatives Sterically Locked at the CD-Ring Components
M. A. S. Hammam, H. Nakamura, Y. Hirata, H. Khawn, Y. Murata, H. Kinoshita, and K. Inomata*
[Full Text PDF(J-STAGE)]
Biliverdin derivatives with a Z-syn, Z-anti, or E-syn CD-ring components were synthesized by developing new and efficient methods for the construction of sterically locked CD-ring components towards the elucidation of the stereochemistry of the chromophore in phytochromes.
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| Web Release Date:
October 10, 2006
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| 1573-1579
Synthesis and Spectroscopic Properties of Novel Silacyclic Compounds Containing a Titanium and Some Chalcogen Atoms
N. Takeda, T. Tanabe, and N. Tokitoh*
[Full Text PDF(J-STAGE)] [Supporting Information]
Novel silacyclic compounds containing a titanium and some chalcogen atoms, [Tbt(Mes)Si(μ-Ch)2TiCp2] and [Tbt(Mes)Si(μ-Ch)(μ-Ch2)TiCp2] (Ch = S and Se; Tbt = 2,4,6-tris[bis(trimethylsilyl)methyl]phenyl; Mes = mesityl; Cp = cyclopentadienyl), were synthesized by the reactions of the disilene Tbt(Mes)Si=Si(Mes)Tbt with [Cp2TiCh5].
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| Web Release Date:
October 10, 2006
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| 1580-1584
Synthesis of 1-Aryl-1H-indole Derivatives by Iodine-Mediated Cyclization of 2-(Arylamino)styrene Derivatives
K. Kobayashi,* K. Miyamoto, T. Yamase, D. Nakamura, O. Morikawa, and H. Konishi
[Full Text PDF(J-STAGE)]
1-Aryl-1H-indole derivatives were prepared by treatment of 2-(arylamino)styrene derivatives with iodine in the presence of sodium hydrogencarbonate in acetonitrile at 0 °C in satisfactory yields.
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| Web Release Date:
October 10, 2006
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| 1585-1600
Deamination of 1-Alkyl-9-aminomethyltriptycenes. Participation of a Neighboring 1-Alkyl Substituent
G. Yamamoto,* A. Koseki, J. Sugita, H. Mochida, and M. Minoura
[Full Text PDF(J-STAGE)]
Deamination of the title compounds gave products resulting from the participation of a neighboring 1-alkyl group, e.g., 31 in the case of R = Me.
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| Web Release Date:
October 10, 2006
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| 1601-1603
Methyltrioxorhenium and Sodium Bromide-Catalyzed Oxidation of Alcohols to Carbonyl Compounds with H2O2 Using 1-Butyl-3-methylimidazolium Tetrafluoroborate Ionic Liquid as a Novel Recyclable Green Solvent
S. L. Jain, V. B. Sharma, and B. Sain*
[Full Text PDF(J-STAGE)]
The ionic liquid 1-butyl-3-methylimidazolium tetrafluoroborate ([bmim]BF4) was found to be a recyclable, reusable, and green solvent for the oxidation of various alcohols to the corresponding carbonyl compounds using a MTO/NaBr catalytic system and hydrogen peroxide as an oxidant.
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| Web Release Date:
October 10, 2006
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| 1604-1606
Substituent Effects on the Spectroscopic and Structural Parameters of Several New 1,3,2-Diazaphosphorinanes. Syntheses, Spectroscopic Characterization, and X-ray Crystallography
K. Gholivand,* Z. Shariatinia, F. Yaghmaian, and H. Faramarzpour
[Full Text PDF(J-STAGE)]
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New 1,3,2-diazaphosphorinanes were synthesized and characterized by NMR and IR spectroscopy and elemental analysis. X-ray crystallography showed that the six-membered rings have chair conformations and the P=O bond is placed in an equatorial position.
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| Web Release Date:
October 10, 2006
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| 1607-1613
Systematic Studies on Chain Lengths, Halide Species, and Well Thicknesses for Lead Halide Layered Perovskite Thin Films
Y. Takeoka,* K. Asai, M. Rikukawa, and K. Sanui
[Full Text PDF(J-STAGE)]
Two-dimensional layered perovskite compounds were systematically prepared. The influences of the barrier-size, halide species, and well thickness for the perovskite thin films on the quantum confinement structures were investigated.
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| Web Release Date:
October 10, 2006
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| 1614-1619
Synthesis, Structures, and Two-Photon Absorption Properties of Two New Heterocycle-Based Organic Chromophores
Y.-X. Yan,* H.-H. Fan, C.-K. Lam, H. Huang, J. Wang, S. Hu, H.-Z. Wang,* and X.-M. Chen
[Full Text PDF(J-STAGE)]
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There are two crystallographically independent organic cations in the asymmetric unit of compound 4. Lattice water molecules co-crystallized forming various kinds of hydrogen bonds. Hydrogen-boned hexagons are formed by O1w, O2w, I−, and their centrosymmetrically related partners.
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