bluuebunny/crossref_metadata_2025_split huggingface dataset:
Catalytic Activity of an Octopus-type Calixarene on the Formation of Ethers
Authors: Taniguchi Hisaji , Nomura Eisaku 
Published: July 2006

Abstract
5,11,17,23,29,35-Hexa-p-tert-butyl-37,38,39,40,41,42-hexakis-(3,6,9-trioxadecyloxy)calix [6]arene catalyzes the formation of an ether and bisphenoxymethanes through the Williamson synthesis.
Direct Synthesis of τ-Form Metal-Free Phthalocyanine from Phthalodinitrile by Seeding Procedure
Authors: Enokida Toshio , Ehashi Shigeyuki 
Published: July 2006

Abstract
Direct synthesis of τ-form metal-free phthalocyanine (τ-H2Pc) was performed from phthalodinitrile by using of 1,8-diaza-bicyclo(5,4,0)undecene-7 (DBU) and crystal nucleus in alcohol.
The yield of τ-H2PC was investigated under various conditions.
Photoelectrochemical Properties of TiO2 Microcrystallites Incorporated in Sheet Silicates of Montmorillonite
Authors: Yoneyama Hiroshi , Nippa Satoru 
Published: July 2006

Abstract
Photoelectrochemical properties of the titled material were investigated in a system of clay-modified electrodes. Photocurrent action spectra of the incorporated TiO2 microcrystallites having ca. 15 Å diameter showed a blue shift from those of a TiO2 single crystal electrode, indicating the operation of the quantum size effect at the TiO2 microcrystallites. Photoelectrochemical activities for oxidation of several aliphatic alcohols were a little higher at the TiO2 microcrystallites incorporated in the clay than the TiO2 single crystal.
Photoluminescence Proof of the Increase of Surface Recombination Velocity at p-GaAs Electrode by Pt Treatment
Authors: Uosaki Kohei , Shigematsu Yasuyuki , Kita Hideaki 
Published: July 2006

Abstract
Photoluminescence measurements with excitation light of several wavelengths were employed to investigate the effect of noble metal treatment on hydrogen evolution reaction at semiconductor electrode. It was demonstrated that surface recombination velocity was increased by Pt treatment leading to higher dark current and lower photocurrent.
Substituent Effects in 9,10-Dihydro-9,10-o-benzenoanthracene-1,4-diones on the Half-wave Potentials
Authors: Yamamura Kimiaki , Miyake Hideyoshi , Himeno Sadayuki , Inagaki Satoshi , Nakasuji Kazuhiro 
Published: July 2006

Abstract
Polarographic half-wave reduction potentials of some 9,10-dihydro-9,10-o-benzenoanthracene-1,4-diones showed that methoxy group is less electron donating than methyl group. Observed substituent effects are successfully discussed in terms of the inductive effect, the intramolecular LUMO-LUMO interaction, the LUMO amplitudes, and so on.
Square Planar–Octahedral Equilibrium of Bismacrocyclic Ni(II)Ni(II) Complexes with a Polymethylene Bridge of Various Lengths
Authors: Mochizuki Katsura , Iijima Asako , Endoh Yumiko 
Published: July 2006

Abstract
Bismacrocyclic Ni(II)Ni(II) complexes, i.e., 7,7′-polymethylenebis[2,12-dimethyl-3,7,11,17-tetraazabicyclo[11.3.1]heptadeca-1(17),2,11,13,15-pentaene]dinickel(II) perchlorates with polymethylene bridges of 2-6-C length, exist in the equilibrium between square planar and octahedral forms in water. The equilibrium shifts toward the octahedral side as the polymethylene bridge is shortened.
Cyclic Voltammetric Investigation of Disilenes
Authors: Shepherd Brian D , West Robert 
Published: July 2006

Abstract
Three tetraaryldisilenes and two dialkyldiaryldisilenes were investigated by cyclic voltammetry, all undergoing irreversible oxidation and reduction. The oxidation potentials were similar for all five compounds, but the reduction potentials were lower for the tetraaryldisilenes than for the dialkyldiaryldisilenes.
Regioselective Liquid-Phase Toluene Nitration with Modified Clays as Catalysts
Authors: Cornelis André , Gerstmans André , Laszlo Pierre 
Published: July 2006

Abstract
Catalytic mononitration of toluene (yields of 50–81%; turnover at least 850) occurs in the presence of modified clays with useful regioselectivities, such as (o:m:p) = 31:2:67. The nitrating species is extracted from concentrated nitric acid by carbon tetrachloride-acetic anhydride mixture.
Structure and Reactivity Studies of 5-Methyl-1,5-dihydro-5-deazaisoalloxazinophane
Authors: Shinkai Seiji , Nishiyama Noriaki , Matsuda Tsutomu , Kanazawa Ryusuke , Kawase Akito , Manabe Osamu 
Published: July 2006

Abstract
The X-ray structure analysis established that in the reaction of 5-deazaisoalloxazinophane and MeMgBr the methyl group is incorporated into the axial C(5) position. The axial selectivity is in line with the stereochemical course observed for the reduction of this compound. The product having only Heq at C(5) is much less reactive than 1,5-dihydro-5-deazaisoalloxazinophane having both Heq and Hax.
Laser Ablation-Molecular Beam Method: A Versatile Diagnosis for the Reactions of Metal Ions with Molecules in the Gas Phase. Dimanganese Decacarbonyl
Authors: Oka Tadashi , Toya Kenzo , Kasatani Kazuo , Kawasaki Masahiro , Sato Hiroyasu 
Published: July 2006

Abstract
Intense laser light was focussed on the surface of a metal substrate (Nb or Cu) in vacuum, and a molecular beam of Mn2(CO)10 was injected nearby. Product ions resulting from the reaction of substrate metal ions or electrons with Mn2(CO)10 were analyzed by mass-spectroscopy. This method provides a simple and versatile diagnosis for the reactions of metal ions and/or electrons with molecules in the gas phase.
A New Route to Perfluorovinylamines by the Pyrolytic Reaction of an Alkali Metal Salt of Perfluoro(2-dialkylamino-propionic acids)
Authors: Abe Takashi , Hayashi Eiji 
Published: July 2006

Abstract
A potentially general route to various kinds of perfluorovinylamines is described involving a pyrolysis of an alkali metal salt of perfluoro(2-dialkylamino-propionic acids)
Electrically Induced Wettability Change of Polyaniline. Potential Controlled Tensiometric Study
Authors: Hato Masakatsu 
Published: July 2006

Abstract
Electrically induced wettability change of polyaniline has been addressed by a potential controlled tensiometric method. Contact angle decreases with a change in the electrical potential toward more positive values. Wettability of polyaniline can be modulated by external electrical signals.
Synthesis and X-Ray Structure Analysis of Novel Ethyl-Bridged Ytterbium–Triethylaluminum Complex; (η-C5Me5)2Yb·Al(C2H5)3 (THF)
Authors: Yamamoto Hitoshi , Yasuda Hajime , Yokota Kiyohiko , Nakamura Akira , Kai Yasushi , Kasai Nobutami 
Published: July 2006

Abstract
A series of novel ytterbium–organoaluminum complexes has been prepared by the reaction of YbCp*2 (THF) (Cp*=η-C5Me5) with AlR3. The X-ray structure analysis of the triethylaluminum complex, YbCp*2Al(C2H5)3 (THF), revealed the presence of unusual Yb–(μ-C2H5)–Al linkage. The complex catalyzes the polymerization of ethylene, methyl methacrylate and styrene in toluene.
An Efficient Synthesis of Benzothiazole Derivatives of Thiosugars under Phase-Transfer Conditions
Authors: Bogusiak Jadwiga , Szeja Wieslaw 
Published: July 2006

Abstract
2-Benzothiazole derivatives of thiosugars can be conveniently prepared by treatment of reducing monosaccharides with tosyl chloride and 2-mercaptobenzothiazole under phase-transfer conditions.
A Radical Substitution on Sulfur of Thioester Group. Formation of β- and γ-Thiolactone
Authors: Tada Masaru , Matsumoto Mitsuhiro , Nakamura Tatsuya 
Published: July 2006

Abstract
Alkyl radicals having (t-butylthio)carbonyl group on β- or γ-position gave β- or γ-thiolactones whereas the homologous radical did not give δ-thiolactone. These reactions involve intramolecular radical substitution on the sulfur atom of thioester group. Ethylthioesters have much less reactivity to the same substitution.
Facile Synthesis, Crystal Structure, and Oxidizability of a Novel Benzene Tris-Annelated with Bicyclo[2.2.2]oct-2-ene
Authors: Komatsu Koichi , Jinbu Yasuhisa , Gillette Gregory R , West Robert 
Published: July 2006

Abstract
Trimerization of 2,3-dibromobicyclo[2.2.2]oct-2-ene by the use of butyllithium followed by subsequent cyclization gives 1,2:3,4:5,6-tris(bicyclo[2.2.2]oct-2-eno)benzene (3), the highly symmetrical structure of which is established by X-ray crystallography. Compound 3 is reversibly oxidized upon cyclic voltammetry at 1.25 V vs Ag/Ag+ in CH3CN.
Control of Chemical Selectivity by Specific Weak Interactions between Groups in Reacting Molecules
Authors: Endo Tadashi , Suzuki Takashi , Nakajima Yutaka , Sakiyama Yutaka , Takami Kunihiko , Kato Jun-ichi 
Published: July 2006

Abstract
In oxidation of a pair of associating thiols, each having a phenyl or a given group (R), it has been found that the order of the selectivity agrees with that of the strength of specific R–Ph interactions for each of two sets of R [(i) p-MeC6H4 &lt; Ph &lt; p-MeOC6H4 and (ii) n-C5H11 &lt; Ph &lt; p-MeCOC6H4].
Photothermal Spectrometry Using Pyroelectric Sensor
Authors: Hinoue Teruo , Kawada Satoshi , Murata Mitsuhiro , Yokoyama Yu 
Published: July 2006

Abstract
Temperature change of a sample solution due to optical absorption was detected by a pyroelectric sensor. A calibration curve was linear at the low concentrations of dye and the detection limit was 0.0035 cm−1. From a solvent dependence of the signal magnitude, the signal generation could be explained by thermal conduction.
Generation of Organic Cations from Group 14 Organometallic Compounds via Photoinduced Electron Transfer in the Presence of Cu(II) Salt
Authors: Mizuno Kazuhiko , Yasueda Masahiro , Otsuji Yoshio 
Published: July 2006

Abstract
Irradiations of acetonitrile-alcohol (3 : 1) solutions of arylmethyl silanes, germane, or stannanes in the presence of Cu(BF4)2 gave alkyl arylmethyl ethers in good yields via arylmethyl cations. The efficiency of this photoreaction increased in the order of Si- &lt; Ge- &lt; Sn-compounds.
Facile Preparation of Manganese(II) Tetraphenylporphyrin by the Pyrolysis of Dimethoxoraanganese(IV) Tetraphenylporphyrin
Authors: Suzuki Toru , Imamura Taira , Fujimoto Masatoshi 
Published: July 2006

Abstract
Manganese(II) tetraphenylporphyrin, MnII (tpp) (tpp = meso-tetraphenylporphinato), was afforded by the pyrolysis of MnIV(tpp)(OCH3)2 at ≈180 °C under 10−4–10−5 Torr (1 Torr ≅ 133.3 Pa). The pyrolysis of MoVO(tpp)OR (R = CH3, C2H5) in the solid state yielded MoIVO(tpp).
Superconducting Oxide Thin Films Prepared by Sol–Gel Technique Using Metal Alkoxides
Authors: Monde Takashi , Kozuka Hiromitsu , Sakka Sumio 
Published: July 2006

Abstract
Superconducting oxide thin films of the YBa2Cu3Ox system have been prepared on zirconia (YSZ) substrates by sol–gel technique using metal alkoxide solution. Yttrium butoxide, barium methoxide and copper methoxide in a given atomic ratio were dissolved in a triethanolamine–methanol solution. Coating of the resultant solution, heating at 800 °C in air and annealing in an oxygen atmosphere resulted in superconducting oxide thin films. The onset of superconductivity was seen at 98 K and the resistance rapidly decreased with decreasing temperature, reaching substantially zero at 56 K.
Allylation of Active Methylene Compounds with Allyl Oxime Carbonates Catalyzed by Pd(0)
Authors: Suzuki Osamu , Hashiguchi Yoshiharu , Inoue Seiichi , Sato Kikumasa 
Published: July 2006

Abstract
Allylation of active methylene compounds catalyzed by a palladium(0)-phosphine system took place highly stereoselectively by employing allyl oxime carbonates as the allylating reagent.
Low-temperature and Direct Synthesis of Ethanol from Ethane and Water by the Photochemical Reaction
Authors: Ogura Kotaro , Arima Hiroaki 
Published: July 2006

Abstract
Ethane is directly converted to ethanol by the photochemical reaction at temperatures lower than 100 °C in atmospheric pressure. The conversion reaction is initiated by the hydroxyl radicals formed in the photolysis of water vapor. The conversion coefficient of ethane was 7.7% at 5h, and the selectivity 33.3%.
C-2 Epimerization of Disaccharides by Nickel(II)–Diamine Complex. A New Synthesis of (1→6)-Linked Disaccharides Having Mannose as a Reducing Unit
Authors: Tanase Tomoaki , Ishida Katsuaki , Watanabe Tadashi , Komiyama Makoto , Koumoto Kunihito , Yano Shigenobu , Hidai Masanobu , Yoshikawa Sadao 
Published: July 2006

Abstract
(1→6)-Linked disaccharides having mannose as a reducing unit were synthesized from their naturally abundant C-2 epimers by the novel C-2 epimerization promoted by nickel(II)-diamine complex, [Ni(H2O)2(tmen)2]Cl2 (tmen = N,N,N′-trimethylethylenediamine).
σ(Si–Si)-π Intramolecular Charge–Transfer Interaction and X-Ray Structure of 4-Dicyanomethylene-1-silylsilacyclohexanes
Authors: Kira Mitsuo , Takeuchi Kiyoshi , Kabuto Chizuko , Sakurai Hideki 
Published: July 2006

Abstract
4-Dicyanomethylene-1-trimethylsilylsilacyclohexane (2a) and the trisilane analog (2b) showed the intramolecular CT bands in the absorption spectra. In combination with the results of the X-ray structure analysis of 2a, the origin of the σ(Si–Si)-π CT interaction was ascribed to the through-bond orbital interaction.
Fe3O(OAc)6(Py)3 Mediated Reduction of Aromatic Nitro Compounds with 2-Mercaptoethanol
Authors: Murata Satoru , Miura Masahiro , Nomura Masakatsu 
Published: July 2006

Abstract
Aromatic nitro compounds were selectively reduced by 2-mercaptoethanol in the presence of Fe3O(OAc)6(Py)3 to give the corresponding amines in good yields.
Redox Photochromism Involving Near Infrared Absorption Maximum
Authors: Kamogawa Hiroyoshi , Nanasawa Masato 
Published: July 2006

Abstract
trans-4,4′-Vinylenebis (1-benzylpyridinium) dichlorides and 1,1′-ethylene-2,2′-bipyridinium dibromides in a poly(N-vinyl-2-pyrrolidone) matrix film exhibited reversible absorption maxima in the near IR(ca. 800 nm) upon UV irradiation. The thermal stability of the absorption maximum thus developed was influenced by the surroundings as well as the kind of compound.
Simplified Chiral Aminolysis of Prochiral σ-Symmetric Dicarboxylic Anhydrides with Sodium Salt of 4(S)-IPTT
Authors: Nagao Yoshimitsu , Hagiwara Yuichi , Hasegawa Yukari , Ochiai Masahito , Inoue Takehisa , Shiro Motoo , Fujita Eiichi 
Published: July 2006

Abstract
Highly enantioselective chiral aminolysis of cis-4-cyclo-hexen-1,2-ylenebis(carboxylic acid) anhydride has been performed by employing sodium salt of 4(R)-isopropyl-1,3-thiazolidine-2-thione in THF-DMSO. Other chiral aminolyses of prochiral σ-symmetric dicarboxylic anhydrides such as cis-cyclobutan-1,2-ylenebis(carboxylic acid) anhydride, meso-2,4-dimethylglutaric anhydride, and 3- [(t-butyldimethylsilyl) oxy] glutaric anhydride were similarly investigated.
Chiral α-Methyl-homoallylic Alcohols from Yeast-Generated Precursors. Synthesis of (4R,5S) Sitophilure
Authors: Fronza Giovanni , Fuganti Claudio , Högberg Hans-Erik , Pedrocchi-Fantoni Giuseppe , Servi Stefano 
Published: July 2006

Abstract
Optically active (3S,4R)-3,4-dihydroxy-4-methyl-6-phenyl-hex-5-ene and (2S,3RS)-2,3-dihydroxy-3-methyl-5-phenyl-pent-4-ene, previously obtained from fermenting baker’s yeast reduction of the corresponding Ketones, are transformed either into optically active α-ethyl and α-methyl ketones, or into α-methyl homoallylic alcohols from which enantiomerically pure (4S,5R) sitophilure, (2S,3R)-2-methyl-1,3-butandiol and its (2S,3S)-diastereoisomer have been prepared.
Chemical Reactions in Medium Density Fluids. Inversion of Density Dependence of the Dimerization Equilibrium of 2-Methyl-2-nitrosopropane in Carbon Dioxide
Authors: Kimura Yoshifumi , Yoshimura Yosuke , Nakahara Masaru 
Published: July 2006

Abstract
Pressure effect on the dimerization–dissociation reaction of 2-methyl-2-nitrosopropane was studied in supercritical carbon dioxide. The configurational volume change for the dimerization, which was negative at high density, was found to be positive in a medium density region.
The Friedel-Crafts Type Methanesulfonylation of Deactivated Benzenes
Authors: Ono Mitsunori , Nakamura Yoshisada , Sato Shingo , Itoh Isamu 
Published: July 2006

Abstract
The participation of nonionic donor-acceptor complex [A] was suggested by the analyses of product isolated in the Friedel–Crafts reaction of m-dichlorobenzene with CH3SO2Cl in the presence of AlCl3. On the basis of these observations a new practical method of methanesulfonylation of deactivated benzenes employing methane-sulfonic anhydride and CF3SO3H was developed.
An Electrochemical Fabrication Method for Gold and Carbon Ultramicroelectrode
Authors: Abe Takayuki , Itaya Kingo , Uchida Isamu 
Published: July 2006

Abstract
Au and carbon fiber ultramicroelectrodes have been fabricated by using an anodic electropolishing method. The radii of them were found to be about 450 nm on Au and 240 nm on carbon electrodes from the calculation based on the steady-state limiting currents.
Intercalation of Tetrathiafulvalene(TTF) into Montmorillonite by Reaction with the Interlayer Cations
Authors: Soma Mitsuyuki , Soma Yuko 
Published: July 2006

Abstract
Tetrathiafulvalene(TTF) is intercalated into montmorillonite through oxidation by the interlayer Cu2+ ion, in excess of the cation exchange capacity of the clay, forming mixed-valent aggregates. TTF cation can be also intercalated through cation exchange with the interlayer Na+ ion.
Uphill Transport of Dihydrogenphosphate Ion through a Liquid Membrane Containing Oxomolybdenum(V) Tetraphenylporphyrin Complex as a Mobile Carrier
Authors: Kokufuta Etsuo , Nobusawa Mitsuyuki 
Published: July 2006

Abstract
Oxomolybdenum(V) tetraphenylporphyrin complex is useful as a carrier for preparing a polymer-supported liquid membrane system in which H2PO4− ion is transported against its concentration gradient by coupling of a ligand exchange reaction.
Transfer Hydrocracking of Diphenylpropane with Tetralin on Active Carbon Catalysts
Authors: Nakamura Ikusei , Aimoto Kohjiroh , Fujimoto Kaoru , Tominaga Hiro-o 
Published: July 2006

Abstract
A nickel supported on active carbon catalyst was found to exhibit an excellent activity for transfer hydrocracking of diphenylpropane with tetralin at 400 °C. It is demonstrated that the catalytic transfer hydrogenation is effected by the reverse spillover of hydrogen atom over the active carbon.
Ruthenium Catalyzed N-Methylation of Aminoaranes Using Methanol
Authors: Huh Keun-Tae , Tsuji Yasushi , Kobayashi Masanobu , Okuda Fumio , Watanabe Yoshihisa 
Published: July 2006

Abstract
Methanol reacts with aminoarenes in the presence of a catalytic amount of ruthenium trichloride hydrate combined with tributylphosphite at 180 °C to give the corresponding N-methylaminoarenes in high yields.
Influence of an Axial Ligand in the Oxidation of the Nitrosyl Complex of Ruthenium(II), trans-[RuX(NO)(py)4]2+ (X=Cl, OH), to Give Oxo Complex of Ruthenium(IV)
Authors: Nishimura Hisatoshi , Nagao Hirotaka , Howell F Scott , Mukaida Masao , Kakihana Hidetake 
Published: July 2006

Abstract
Oxidation of trans-[Ru(OH)(NO)(py)4]2+ gives trans-[Ru(ONO)(O)(py)4]+, while that of trans-[RuCl(NO)(py)4]2+ yields trans-[RuCl(O)-(py)4]+. The two complexes differ in the origin of the oxo ligand. Their formation proceses were proved to be influenced by the ligand trans to the nitrosyl.
Photochromism of [2.n]Metacyclophan-1-ene Derivatives
Authors: Murakami Shin-ichi , Tsutsui Tetsuo , Saito Shogo , Miyazawa Akira , Yamato Takehiko , Tashiro Masashi 
Published: July 2006

Abstract
Photochromism of [2.n]metacyclophan-1-ene derivatives (n=2,3,4) was investigated. The reaction rates of the thermal decoloration were increased about thousand-fold with increasing of n by one.
Organoselenium-mediated Reduction of α, β-Epoxy Esters to β-Hydroxy Esters
Authors: Miyashita Masaaki , Hoshino Masahide , Suzuki Toshio , Yoshikoshi Akira 
Published: July 2006

Abstract
α, β-Epoxy esters were reduced to β-hydroxy esters with an organoselenium reagent, Na+[PhSeB(OEt)3]−, via α-substitution process.
Isolation of 2-Mercaptotropone as a 2:1 Complex with 1,1,6,6-Tetraphenylhexa-2,4-diyne-1,6-diol and X-Ray Crystal Structure of the Complex
Authors: Toda Fumio , Tanaka Koichi , Asao Toyonobu , Ikegami Yusaku , Tanaka Naoki , Hamada Kensaku , Fujiwara Takaji 
Published: July 2006

Abstract
Of two tautomers of 2-mercapto substituted tropone, 2-mercaptotropone and 2-hydroxytropothione, the former is isolated as a 2:1 complex with 1,1,6,6-tetraphenylhexa-2,4-diyne-1,6-diol, and infrared and electronic absorption spectra of the complex are reported. X-Ray crystal structural study shows that the 2-mercaptotropone in the complex has no bond alternation and then has a delocalized π-electron system.
Methyl and Aryl Ru(II) Complexes of Crown Thioethers, R4[14]aneS4 (R=Me, H) Remarkable Geometrical Effect on Intermolecular C(sp2)–H Bond Activation by cis- and trans-RuCl2R4 [14] aneS4–Al2Me6
Authors: Ueda Tatsuo , Yamanaka Hiroaki , Adachi Tomohiro , Yoshida Toshikatsu 
Published: July 2006

Abstract
A reaction of cis-RuCl2R4[14] aneS4 (R=Me, H) with Al2Me6 in aromatic hydrocarbons proceeds through an intermolecular C(sp2)–H bond activation affording trans-RuAr(Cl)R4[14]aneS4 (Ar=C6H4Me, C6H5), while a similar reaction of trans isomer gives trans-RuMe(Cl)Me4[14]aneS4.
Synthesis and Structure of Organodiselenogermanes
Authors: Tomoda Shuji , Shimoda Masakatsu , Takeuchi Yoshito , Iitaka Yoichi 
Published: July 2006

Abstract
Diphenylselenogermanes are prepared for the first time in 32–89% yield by the reaction between sodium benzeneselenolate and dihalogermanes (halogen=Cl or Br). The X-ray structure of 1,1-diphenylseleno-1-germacyclopentane has been determined.
Electrochemical Formation of Polymer Thin Films by Disruption of Micellar Complex
Authors: Hoshino Katsuyoshi , Goto Masayuki , Saji Tetsuo 
Published: July 2006

Abstract
Polymer thin films of poly(4-vinylpyridine), and copolymer of methyl methacrylate and methacrylic acid were prepared by electrolysis of an aqueous solution containing a surfactant with ferrocenyl moiety and corresponding polymer. The film thickness increased linearly with the amount of electricity. The morphology of the films was investigated by scanning electron microscopy.
Preparation of Superconducting YBa2Cu3O7−δ Films by the Dipping-Pyrolysis Process Using Metal Acetylacetonates
Authors: Kumagai Toshiya , Kondo Wakichi , Yokota Hiroshi , Minamiue Hidehiro , Mizuta Susumu 
Published: July 2006

Abstract
Superconducting YBa2Cu3O7−δ films were prepared on yttria stabilized zirconia substrates by the dipping-pyrolysis process using metal acetylacetonates (Y/Ba/Cu = 1.0/3.0/4.3) as starting materials; TC (onset) of 97 K and TC (end) of 89 K were achieved in the resistivity measurement for the films annealed at 950 °C in O2.
MAS-NMR Spectra of 23Na in Spinel Block of β- and β″-Alumina Structures
Authors: Ikawa Hiroyuki , Shima Koji , Urabe Kazuyori 
Published: July 2006

Abstract
The MAS-NMR spectra of the unexchangeable sodium in Na+- and K+-β″-gallates were sharp and symmetric, and their chemical shifts were far larger than that of sodium on the conduction planes. The results were consistent with the studies that the sodium ion could occupy the tetrahedral site in the middle of the spinel blocks.
Odd–Even Effect in the Optical Resolution by Optically Active Polyamides Having (−)-Anti Head-to-head Coumarin Dimer Component
Authors: Saigo Kazuhiko , Chen Yun , Fujioka Kazutoshi , Yonezawa Noriyuki , Hasegawa Masaki 
Published: July 2006

Abstract
Optically active polyamides were synthesized by ring-opening polyaddition reaction of (−)-anti head-to-head coumarin dimer with H2N–(CH2)n–NH2 (n=2–10). The polyamides show high optical resolution ability to racemates containing an aromatic group(s) when n is even number of 6 and over, while no resolution could be achieved when n is odd number.
Structure of Nigakilactone O, a New Quassinoid from Picrasma Ailanthoides
Authors: Hirota Hiroshi , Yokoyama Akihisa , Tsuyuki Takahiko , Takahashi Takeyoshi , Waelchli Markus 
Published: July 2006

Abstract
Nigakikactone O, a new picrasane-skeletal compound, was isolated from Picrasma ailanthoides PLANCHON, and its structure including the stereochemistry was determined to be 2α-hydroxy-12β-methoxy-11α-(3-methoxy-4,5-methylenedioxybenzoyloxy)picrasane-1,16-dione mainly by 1D and 2D NMR techniques.