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Vol. 80, No. 2 (February, 2007)
[PDF version]
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February 13, 2007
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233-257
Transition Metal-Catalyzed Organometallic Reactions that Have Revolutionized Organic Synthesis
E. Negishi
[Full Text PDF(J-STAGE)] Free Access Article
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The Pd- or Ni-catalyzed cross-coupling of organometals containing Zn, Al, Zr, and B as well as the Zr-catalyzed alkyne carboalumination and the Zr-catalyzed asymmetric carboalumination of alkenes (ZACA reaction) are discussed as three prototypical examples of the transition metal-catalyzed organometallic reactions that have collectively revolutionized organic synthesis.
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Web Release Date:
February 13, 2007
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258-275
A Helmeted Dialkylsilylene
M. Kira,* T. Iwamoto, and S. Ishida
[Full Text PDF(J-STAGE)] Open Access Article
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A comprehensive study of the structure, spectroscopic properties, and reactions of an isolable divalent silicon compound bearing a helmet-like substituent has disclosed the intrinsic properties of silylene that have never been revealed by studies on transient dialkylsilylenes.
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February 13, 2007
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276-286
Structural-Based Engineering for Transferases to Improve the Industrial Production of 5′-Nucleotides
E. Suzuki,* K. Ishikawa, Y. Mihara, N. Shimba, and Y. Asano
[Full Text PDF(J-STAGE)] Free Access Article
To enhance the PPi-inosine phosphotransferase reaction and to reduce the phosphatase reaction, site-directed mutagenesis was carried out on the basis of the stereostructure of a nonspecific acid phosphatase and random mutagenesis results, and some highly improved mutants were produced.
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February 13, 2007
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287-294
Luminescent Platinum Complexes Having Sensing Functionalities
M. Kato
[Full Text PDF(J-STAGE)] Free Access Article
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The molecular arrangement of the assembled platinum(II) complexes is sensitive to temperature, solvent, and vapor. The chromic behavior of the luminescence and structural aspects of mononuclear and dinuclear platinum(II) complexes containing 2,2′-bipyridine and its derivatives are reviewed.
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February 13, 2007
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295-302
Organic Nanoparticles of Cyanine Dye in Aqueous Solution
Z. Ou, H. Yao,* and K. Kimura
[Full Text PDF(J-STAGE)] [Supporting Information] Free Access Article
We report the synthesis of ion-based organic dye nanoparticles in aqueous solution. The approach is based on “ion-association” in water between the pseudoisocyanine (PIC) dye cation and the tetraphenylborate or tetrakis(4-fluorophenyl)borate anion. Size tuning of spherical PIC nanoparticles was accomplished by varying the molar ratio of the loaded anion to the dye cation.
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February 13, 2007
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303-306
Quantitative Structure–Property Relationship Prediction of the Half-Wave Potential for Substituted Nitrobenzenes in Five Nonaqueous Solvents
M. H. Fatemi,* M. R. Hadjmohammadi, K. Kamel, and P. Biparva
[Full Text PDF(J-STAGE)]
In this work, a QSPR model for predicting the half-wave potential of some substituted nitrobenzenes in different solvents, using electronic descriptors for solutes and solvents, was developed and validated.
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February 13, 2007
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| 307-315
Ab Initio and DFT Calculations on 2-Aminopyrimidine, 2-Amino-4,6-dichloropyrimidine, and Their Dimers
A. A. Hasanein* and S. A. Senior
[Full Text PDF(J-STAGE)]
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MP2 and B3LYP methods using different extended basis sets have been used to calculate the optimum molecular geometries of 2-aminopyrimidine, 2-amino-4,6-dichloropyrimidine, and their possible dimers. The B3LYP/6-311++G** calculated H-bond energy after BSSE correction is in range of 4.5 kcal mol−1 for the studied dimers.
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February 13, 2007
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| 316-320
Calorimetric Study on Mesogenic Butyl 4-[2-(Perfluorooctyl)ethoxy]benzoate. Successive Phase Transitions in the Crystalline State
K. Hori,* M. Maeda, A. Nidaira, H. Kawaji, and T. Atake
[Full Text PDF(J-STAGE)]
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Thermodynamic study has been made on the title compound using homemade adiabatic calorimeters in the temperature range of 13–360 K in order to elucidate the successive phase transitions between low-temperature (L), intermediate-temperature (M), and high-temperature (H) crystalline phases.
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February 13, 2007
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| 321-323
DFT Calculations and IR Studies on 2-Hydroxy-1,4-naphthoquinone and Its 3-Substituted Derivatives
T. Satoh, T. Tsuji, H. Matsuda, and S. Sudoh*
[Full Text PDF(J-STAGE)]
From DFT calculations and IR spectra, the carbonyl stretching vibrations of the title compounds observed in the region of 1630–1700 cm−1 were well explained by the assumption of two types of intramolecular hydrogen bonds.
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February 13, 2007
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| 324-328
Synthesis, X-ray Structures, and Solution Properties of Vanadium(III) and -(IV) Complexes with N-(2-Hydroxyphenyl)-N-(2-pyridylmethyl)amine
K. Kanamori,* K. Kusajima, H. Yachi, H. Suzuki, Y. Miyashita, and K. Okamoto
[Full Text PDF(J-STAGE)]
Vanadium(III) and -(IV) complexes with N-(2-hydroxyphenyl)-N-(2-pyridylmethyl)amine (H2hppma) have been prepared, and their structures have been determined by X-ray crystallography. The vanadium(IV) complex with hppma is an unusual non-oxo or bare vanadium(IV) complex.
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February 13, 2007
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| 329-334
Separation Characteristics of a Phosphatidylcholine-Coated ODS Column for Direct Sample Injection Analysis of Biological Fluid Samples
T. Hasegawa, Y. Fukumoto, J. Ishise, R. Hattori, Y. Zhu, T. Umemura, and H. Haraguchi*
[Full Text PDF(J-STAGE)]
An octadecylsilyl silica (ODS) column was modified with phosphatidylcholine (PC) to prepare a new multi-functional stationary phase, and its separation performance and applicability to direct sample injection analysis were evaluated.
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February 13, 2007
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| 335-345
Control of Coordination and Luminescence Properties of Lanthanide Complexes Using Octadentate Oligopyridine-Amine Ligands
A. Wada, M. Watanabe, Y. Yamanoi, T. Nankawa, K. Namiki, M. Yamasaki, M. Murata, and H. Nishihara*
[Full Text PDF(J-STAGE)] [Supporting Information]
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Syntheses, structures, and luminescence properties of lanthanide complexes with linear and cyclic octadentate oligopyridine-amine ligands were investigated to examine the effects of the coordination environments induced by the ligand backbone structure on the luminescence properties.
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February 13, 2007
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| 346-348
Morphology and Specific Surface Free Energies of Ruby Single Crystal Grown from Molybdenum Trioxide Flux Studied by Contact Angle of Liquid Droplets
T. Suzuki,* E. Iguchi, K. Teshima, and S. Oishi
[Full Text PDF(J-STAGE)]
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The specific surface free energy of each face of a ruby crystal was obtained from the contact angle of liquid droplets. The relationship between the specific surface free energy and the morphology of the crystal satisfies Wulff′s relationship.
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February 13, 2007
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| 349-357
1,1,4,4-Tetra(2-furyl, 2-thienyl, and 2-selenienyl)butatrienes: Synthesis, Properties, and Molecular Structures
H. Kurata,* S. Muro, T. Enomoto, T. Kawase,* and M. Oda
[Full Text PDF(J-STAGE)]
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1,1,4,4-Tetra(heteroaryl)butatrienes containing furan, thiophene, and selenole rings were synthesized and characterized. They are relatively stable crystalline substances with intense absorption at long wavelengths and have considerably high redox properties.
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February 13, 2007
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| 358-364
Hydrogen Bond Donor Ability α2H Is a Good Index for Finding an Appropriate Color Developer for the Molecular Design of Functional Thermal Paper
K. Kawasaki and K. Sakakibara*
[Full Text PDF(J-STAGE)]
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Hydrogen bond donor ability is essential for strong black color developing and durability of the developed color on thermal paper. Parameter α2H is a good index to evaluate hydrogen bond donor ability of the color developer.
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February 13, 2007
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| 365-370
Photostimulated Crystal Lattice Change Induced by the Photochemical Ring-Opening Reaction of Diarylethene Molecules
T. Hamazaki, K. Matsuda, S. Kobatake, and M. Irie*
[Full Text PDF(J-STAGE)]
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Single crystals of the closed-ring isomer of a diarylethene derivative underwent ring-opening reaction, during which the length of the b axis of the unit cell increased due to photoinduced rotational movement of the molecule.
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February 13, 2007
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| 371-386
Orientation and Substituent Effects on the Properties of the Diacetylene-Group Connected Octaethylporphyrin–Dihexylbithiophene Derivatives (OEP–DHBTh–X) Carrying Electron-Withdrawing Groups
N. Hayashi, T. Nishihara, T. Matsukihira, H. Nakashima, K. Miyabayashi, M. Miyake, and H. Higuchi*
[Full Text PDF(J-STAGE)]
Orientation and substituent effects on the properties of the OEP derivatives 1–4 were studied.
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February 13, 2007
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| 387-394
Total Synthesis and Cytotoxicity of (+)- and (−)-Goniodiol and 6-epi-Goniodiol. Construction of α,β-Unsaturated Lactones by Ring-Closing Metathesis
K. Nakashima, N. Kikuchi, D. Shirayama, T. Miki, K. Ando, M. Sono, S. Suzuki, M. Kawase, M. Kondoh, M. Sato, and M. Tori*
[Full Text PDF(J-STAGE)]
(+)-Goniodiol, a potent and selective cytotoxin, and (−)-6-epi-goniodiol, as well as their enantiomers, have been synthesized starting from cinnamyl alcohol. The key steps of the synthesis were Sharpless asymmetric epoxidation and cyclization of an acrylate derivative using ring-closing metathesis reaction. The cytotoxicity of both enantiomers of goniodiol and 6-epi-goniodiol against HL-60 cells was examined.
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February 13, 2007
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| 395-399
Synthesis of Selenoketone–Platinum Complex
T. Shigetomi, K. Shioji, K. Okuma,* and Y. Yokomori
[Full Text PDF(J-STAGE)]
The synthesis of selenoketone–platinum complexes 3 was achieved by reacting selenoketones 4 with (η2-ethylene)bis(triphenylphosphine)platinum(0) (1). 1,1,3,3-Tetramethylindan-2-selone–platinum complex 3b was determined by X-ray crystallographic analysis to be an η2-selenoketone–platinum complex.
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February 13, 2007
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| 400-406
Perrhenic Acid-Catalyzed Dehydration from Primary Amides, Aldoximes, N-Monoacylureas, and α-Substituted Ketoximes to Nitrile Compounds
Y. Furuya, K. Ishihara,* and H. Yamamoto*
[Full Text PDF(J-STAGE)]
An economical and environmentally benign process for the preparation of nitriles by the dehydration of primary amides and aldoximes is catalyzed by perrhenic acid. The catalyst also shows high activity for the Beckmann fragmentation of α-substituted ketoximes to nitriles.
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February 13, 2007
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| 407-409
Electrochemical A-Ring Bromination of Estrogens
I. Damljanović, M. Vukićević, and R. D. Vukićević*
[Full Text PDF(J-STAGE)]
Electrochemical A-ring bromination of estrogens was achieved. Depending on the charge consumption, mixtures of 2- and 4-bromoestrogens (2 F mol−1), or 2,4-dibromo derivatives as the sole products (4 F mol−1) were obtained.
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February 13, 2007
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| 410-417
Complex Made from Tetrasodium N,N-Bis(carboxylatomethyl) Glutamate and Sodium Oleate that Forms a Highly Ordered Lamella in Gel Phase
Y. Jeong, K. Uezu, M. Kobayashi, S. Sakurai, H. Masunaga, K. Inoue, S. Sasaki, N. Shimada, Y. Takeda, K. Kaneko, and K. Sakurai*
[Full Text PDF(J-STAGE)] [Supporting Information]
When two transparent aqueous solutions of tetrasodium N,N-bis(carboxylatomethyl) glutamate (GLDA) and sodium oleate (OleNa) were mixed, a white gel phase was formed at solute concentrations higher than 2.8 wt %, indicating that complexation between GLDA and OleNa caused gelation.
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February 13, 2007
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| 418-422
Novel Oligomers of 9,9-Dialkylated Fluorenes for Thermally Stable Hole-Transport Materials in OLEDs
M. Kimura,* T. Kurata, Y. Sawaki,* Y. Toba, T. Enokida, and K. Takagi*
[Full Text PDF(J-STAGE)]
Novel fluorene-based oligomers were prepared, which have high glass-transition temperatures (Tg = 147 and 167 °C) for use as the hole-transport material in organic light emitting diodes (OLEDs).
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February 13, 2007
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| 423-428
Hydrothermal Synthesis of Fine NaTaO3 Powder as a Highly Efficient Photocatalyst for Overall Water Splitting
Y. Lee, T. Watanabe, T. Takata, M. Hara, M. Yoshimura, and K. Domen*
[Full Text PDF(J-STAGE)]
A fine NaTaO3 powder prepared by hydrothermal synthesis exhibited photocatalytic activity for overall water splitting 8 times higher than that prepared by solid-state reaction (SSR).
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February 13, 2007
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| 429-431
Synthesis and Crystallization of Hexagonal Boron Nitride in Liquid Sodium Amide
Y. Gu,* M. Zheng, Z. Xu, and Y. Liu
[Full Text PDF(J-STAGE)]
Hexagonal boron nitride composed of sub-micrometer-sized triangles and hexagons was synthesized from MB6 (M = Ca and La) in liquid sodium amide at 600 °C.
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