bluuebunny/crossref_metadata_2025_split huggingface dataset:
Generation of Cation Radicals from Enamines and Their Reactions with Olefins
Authors: Narasaka Koichi , Okauchi Tatsuo , Tanaka Ken , Murakami Masaharu 
Published: May 2006

Abstract
Cation radicals of enamines, generated by the oxidation with CeIV compounds, react with electron-rich olefins to give the addition products. The formal α-alkylation of formylacetate is realized by the reaction of 3-(1-pyrrolidinyl)propenoate and olefins by the use of tetrabutylammonium cerium(IV) nitrate as an oxidant.
2-Lithio-2-trimethylsilyl-1-silacyclopentane as a Synthetic Equivalent of 1-Lithio-1,4-butanediol
Authors: Matsumoto Kozo , Yokoo Toshiaki , Oshima Koichiro , Utimoto Kiitiro 
Published: May 2006

Abstract
Addition of alkyl iodide to 2-lithio-2-trimethylsilyl-1-silacyclopentane provided 2-alkyl-2-trimethylsilyl-1-silacyclopentane which was converted into 1-alkyl-1,4-butanediol by treatment with H2O2-KF and n-Bu4NF.
Reaction of Tetraazapentalene Derivatives Having Fused Cyclic Systems with the I2/NH4OH Reagent
Authors: Tomura Masaaki , Matsumura Noboru , Ito Atsushi , Inoue Hiroo , Yasui Masanori , Iwasaki Fujiko 
Published: May 2006

Abstract
Tetraazapentalene derivatives having fused cyclic systems reacted with the I2/NH4OH reagent to give 1,2,4-thiadiazolo[4,3-a]pyrimidine derivatives with the release of the hypervalent sulfur. The molecular structure of the product was determined by the X-ray crystallographic analysis.
Preparation of Perovskite-type LaFeO3 by Thermal Decomposition of Heteronuclear Complex, {La[Fe(CN)6]·5H2O}x
Authors: Nakayama Susumu , Sakamoto Masatomi , Matsuki Kimihiro , Okimura Yoshihisa , Ohsumi Rie , Nakayama Yusuke , Sadaoka Yoshihiko 
Published: May 2006

Abstract
Submicron perovskite-type, LaFeO3, powders were prepared by the thermal decomposition of a title cyanide-bridged heteronuclear complex. The decomposition begins at about 50 °C and the formation of LaFeO3 proceeds above 580 °C. Mean particle diameter and specific surface area were 50 nm and 22.7 m2/g, respectively, for the LaFeO3 obtained by calcining at 620 °C.
Synthesis of 2,2′-Anhydro-1-(3′-deoxy-3′-bromo-β-D-arabinofuranosyl)thymine and Its Derivatives from 5′-O-Trityl-2′,3′-thymidinene
Authors: Minamoto Katsumaro , Oishi Masataka , Kakehi Akikazu , Watanabe Kenji , Takeuchi Toyohide 
Published: May 2006

Abstract
Reaction of 5′-O-trityl-2′,3′-thymidinene with hypobromous acid gave 2,2′-anhydro-1-(3′-deoxy-3′-bromo-5′-O-trityl-β-D-arabinofuranosyl)-(5R,6R)-trans-5-bromo-6-hydroxy-5,6-dihydrothymine (3) and its (5S,6S) trans analogue (4). These were transformed into the corresponding 5,6-epoxy analogues. Compounds 3 and 4 were debromohydrinated to the title 2,2′-anhydro nucleoside in high yields.
Synthesis of Cesium Bismuth Molybdate Hydrate as a New Inorganic Ion Exchanger
Authors: Murakami Yasushi , Yamaguchi Fujito , Ishiyama Osamu , Imai Hisao 
Published: May 2006

Abstract
Cesium bismuth molybdate hydrate was synthesized from bismuth molybdate hydrate and cesium nitrate in aqueous solution, and reversively changed to bismuth molybdate hydrate in nitric acid. Cesium ion in cesium bismuth molybdate hydrate was easily exchanged with potassium, rubidium and ammonium ions while bismuth molybdate hydrate had no reaction except with cesium ion.
Preconcentration of Trace Metal Ions by Coprecipitation with Gallium Phosphate for Flameless Atomic Absorption Spectrometry
Authors: Kagaya Shigehiro , Kosumi Shiro , Ueda Joichi 
Published: May 2006

Abstract
Gallium phosphate was a useful coprecipitant for the preconcentration of lead(II), tin(IV), antimony(III), and bismuth(III) on the flameless atomic absorption spectrometry. The determination of trace amount of lead(II) in water was demonstrated.
Amino Silica Gels Acting as a Carbon Dioxide Absorbent
Authors: Tsuda Tetsuo , Fujiwara Tsuyoshi , Taketani Yasushi , Saegusa Takeo 
Published: May 2006

Abstract
Amino silica gels, silica gels bound with amines through covalent bond, were prepared by hydrolysis-condensation polymerization using three aminoalkyltrimethoxysilanes. The 2-[4-(2-aminoethylaminomethyl)phenyl]ethyl group absorbed CO2 with equal efficiency both in the silica gel and in the aminoalkyltrimethoxysilane. Suspension of amino silica gels in DMF and in water absorbed CO2 effectively and reversibly.
Novel Method for Preparation of 4-Oxo-2-alkenoic Acid Derivatives from 2,4-Alkadienoic Acid Derivatives by Cobalt(II) Porphyrin-catalyzed Oxygenation
Authors: Matsushita Yoh-ichi , Sugamoto Kazuhiro , Matsui Takanao 
Published: May 2006

Abstract
2,4-Alkadienoic acid derivatives such as ester, amide, and nitrile were converted to the corresponding 4-oxo-2-alkenoic acid derivatives in good yields by the oxygenation with oxygen and triethylsilane in the presence of a catalytic amount of [5,10,15,20-tetra(2,6-dichlorophenyl)porphinato]cobalt(II) followed by acetylation.
Reductive Addition of Alkyl Radical to Phenyl Vinyl Sulfone
Authors: Togo Hideo , Aoki Masahiko , Yokoyama Masataka 
Published: May 2006

Abstract
Radicals generated from (diacyloxyiodo)benzene readily added to phenyl vinyl sulfone to give 2-alkylethyl phenyl sulfone in the presence of a hydrogen donor such as 1,4-cyclohexadiene, 1,3-dioxolane, or triethylsilane. Among these donors, 1,4-cyclohexadiene was the most effective.
Stereocontrolled Reduction of 2-Acyl-1,3-oxathiane Derivatives by Zn(BH4)2 and YCl3-NaBH4
Authors: Matsubara Seijiro , Takahashi Hideya , Utimoto Kiitiro 
Published: May 2006

Abstract
Both enantiomers of 1,2-alkanediols were prepared by the diastereocontrolled reduction of ketones containing (R)-6-methyl-1,3-oxathiane moiety as a chiral auxiliary; reduction with Zn(BH4)2 selected one diastereoface to give one diastereomer and that with YCl3-NaBH4 produced another diastereomer selectively.
Generation of Tertiary Phosphine-Coordinated Pd(0) Species from Pd(OAc)2 in the Catalytic Heck Reaction
Authors: Ozawa Fumiyuki , Kubo Akihiko , Hayashi Tamio 
Published: May 2006

Abstract
Palladium(II) diacetate reacted with water (1 equiv./Pd) and (R)-2,2′-bis(diphenylphosphino)-1,1′-binaphthyl ((R)-BINAP) (3 equiv./Pd) in benzene in the presence of Et3N to give the palladium(0) species Pd[(R)-BINAP]2 (1 equiv./Pd), (R)-BINAP monoxide (1 equiv./Pd), and Et3N·HOAc (2 equiv./Pd). The progress of reaction strongly affected by the content of water in the reaction solution. The reduction of Pd(OAc)2 in the presence of PPh3 proceeded in a similar process to give Pd(PPh3)4 and OPPh3.
Regioselective Carbon-Carbon Bond Formation of 2,2,2-Trifluoroethyl Substituted Tertiary Amines Initiated by Electron Transfer to Photochemically Excited Enone
Authors: Konno Akinori , Fuchigami Toshio 
Published: May 2006

Abstract
Photoadditions of N-(2,2,2-trifluoroethyl)amines to 3-phenylcyclohex-2-en-1-one occurred at the α-position to the trifluoromethyl group predominantly. The regioselectivity of this photoaddition reaction was comparable to that of anodic methoxylation of N-(2,2,2-trifluoroethyl)anilines; this reaction is the first example of direct carbon substitution at α to the trifluoromethyl group and this promotion effect was general for other electron-withdrawing groups.
Efficient Solvent for Supported Liquid Membrane Transport with Lipophilic Monoaza-18-crown-6
Authors: Nakatsuji Yohji , Shimizu Hiroaki , Morita Hirokazu , Masuyama Araki , Okahara Mitsuo 
Published: May 2006

Abstract
When 2-(perfluorohexyl)ethanol was used as the solvent in a supported liquid membrane system using N-[2-(perfluorohexyl)ethyl]-monoaza-18-crown-6 as the carrier, the lipophilicity of counter anions such as chloride, bromide, iodide, nitrate, hydroxide, and picrate was found to have little effect on the transport velocity for K+.
Generation of Superoxide Anion in Fe(III)-nta (nta = nitrilotriacetate) and H2O2 System. An ESR Study
Authors: Kawabata Teruyuki , Okada Shigeru , Akiyama Takashi , Asaumi Akira 
Published: May 2006

Abstract
The reaction of Fe(III)-nta and H2O2 in H2O/DMSO (v/v = 3/2) solution (pH 10) was studied by analyzing ESR spectra. The initial solution of Fe(III)-nta turned dark-brown just after the addition of H2O2. After the production of oxygen gas, the solution turned back to brownish-yellow. The initial and final Fe(III)-nta complexes showed high-spin ferric states with maximum rhombicity. In the dark-brown solution before the oxygen production, the majority of the Fe(III)-nta complex was ESR-silent; this appeared to be a binuclear complex. When the binuclear Fe(III)-nta complex was dominant, superoxide anion was detected.
Effects of Substitution with Positionally Isomeric Anthryl Groups on the One-Way Isomerization
Authors: Karatsu Takashi , Kitamura Akihide , Zeng Hauling , Arai Tatsuo , Sakuragi Hirochika , Tokumaru Katsumi 
Published: May 2006

Abstract
1- and 9-Anthrylethylenes, AnthCH=CHBut (Anth = anthryl) undergo photochemical cis → trans one-way isomerization in a similar way to that of 2-AnthCH=CHBut on both direct and sensitized irradiation. The adiabatic cis → trans conversion of their triplets proceeds with an activation energy decreasing in the order of 2-, 1-, and 9-AnthCH=CHBut, as determined by transient absorption spectroscopy.
Formation and Reaction of Acyl Substituted Nitrile Ylide through the Rh2(OAc)4-Catalyzed Reaction of α-Diazocarbonyl Compounds with Benzonitrile
Authors: Ibata Toshikazu , Fukushima Kazuaki 
Published: May 2006

Abstract
The rhodium(II) acetate-catalyzed reaction of α-diazocarbonyl compounds with benzonitrile and dimethyl acetylenedicarboxylate gave oxazoles and pyrrole-3,4-dicarboxylates through the 1,5-cyclization and 1,3-dipolar cycloaddition of the acyl substituted nitrile ylide intermediates generated by the reaction of ketocarbenoids with benzonitrile.
Room Temperature Preparation and Optical Properties of Titania and Silica Thin Films Embodying Polymer-Protected Ultrafine Metal Particles at High Concentrations
Authors: Ohtaki Michitaka , Ohshima Yoshihide , Eguchi Koichi , Arai Hiromichi 
Published: May 2006

Abstract
Titania and silica glass thin films embodying Au and Pt ultrafine particles at the particle concentrations on the order of 1016 cm−3 are prepared thoroughly under ambient temperature and pressure by adding the liquid dispersion of the particles in the course of the sol-gel process. Changes in the reduction conditions vary the size of the Au particles giving the smallest mean diameter of 2.8 nm, and lead to the films showing the plasma absorption ranging from 530 to 620 nm and the absorption coefficients up to 1.0 × 103 cm−1.
Coordination of NH3 and C2H4 onto W(CO)5 in the Gas Phase
Authors: Jyo-o Motohiro , Omiya Kenji , Ishikawa Yo-ichi , Arai Shigeyoshi 
Published: May 2006

Abstract
The coordination process of NH3 and C2H4 onto “naked” W(CO)5, having one coordinatively unsaturated site, was investigated using a laser-based time-resolved infrared absorption spectroscopy in the gas phase. W(CO)5, selectively prepared by a pulsed 355-nm laser photolysis of W(CO)6, was observed to react with either reactant gas L to make a simple coordination complex, W(CO)5(L), where L is NH3 or C2H4.
Temperature Dependent Duplex Formation of 3′-Phosphate Bearing α-2′-Deoxyoctathymidylate Phosphorothioate and Polyriboadenylic Acid Complex
Authors: Shinozuka Kazuo , Morita Tsutomu , Sawai Hiroaki 
Published: May 2006

Abstract
The temperature dependent duplex formation of α-2′-deoxyoctathymidilate phosphorothioate(α-dTps7Tpo) with polyriboadenylate{poly(rA)} was studied and compared with the duplex formation of the corresponding α-dTpo7Tpo, β-dTpo7Tpo and β-dTps7Tpo with poly(rA). The DNA analog α-dTps7Tpo forms stable duplex with poly(rA) and the duplex exhibited greater stability compared to β-dTps7Tpo and poly(rA) duplex. The obtained results also indicate that the configuration of glycoside bond has greater effect of the stability of duplexes than the modification of internucleotide linkages.
Preparation and Reactivities of S,S-Diaryl-S-aminothiazynes, Ar2S(NR2)(N)
Authors: Yoshimura Toshiaki , Takata Eiichi , Miyake Takahiro , Shimasaki Choichiro , Hasegawa Kiyoshi , Tsukurimichi Eiichi 
Published: May 2006

Abstract
Reaction of S,S-diaryl-S-fluorothiazynes6) with cyclic secondary amines gave novel thiazynes, the corresponding S-aminothiazynes in good yields. Spectroscopic studies, measurement of pKa values, pyrolysis and alkylation reactions of the aminothiazynes were carried out.
Identification of Elucamide as an Organic Compound which Affects Mechanical Properties of Poly (vinyl chloride)–Inorganic Filler Binary Composite System
Authors: Shimomura Osamu , Takai Yoshio , Sawada Masami , Takahashi Shigetoshi , Goto Kunio 
Published: May 2006

Abstract
The mechanical properties (yield strength) were measured for poly (vinyl chloride)–inorganic compound binary composite systems. Among them, only the PVC-talc system did not show the decreasing yield strength with increasing talc content. Elucamide was isolated from talc and identified as an organic compound which can provide inhibitory action of such a decreasing yield strength.
BuSnCl3-Mediated Reaction of 3-(Tributylstannyl)cycloalkenes with Aldehydes. Highly erythro-Selective 2-Cyclopentenylation and 2-Cyclohexenylation of Aromatic Aldehydes
Authors: Miyake Hideyoshi , Yamamura Kimiaki 
Published: May 2006

Abstract
3-(Butyldichlorostannyl)cyclopentene and 3-(butyldichlorostannyl)cyclohexene, which are prepared by the transmetalation of corresponding 3-(tributylstannyl)cycloalkene with BuSnCl3, react with aromatic aldehydes to give 2-cycloalkenylated products with excellent erythro-selectivity. However, the corresponding reaction with aliphatic aldehydes proceeded in only moderate erythro-selectivity.
Scanning Surface Potential Microscopy for Local Surface Analysis
Authors: Fujihira Masamichi , Kawate Hirosuke , Yasutake Masatoshi 
Published: May 2006

Abstract
A Scanning Surface Potential Microscopic (SSPM) instrument was built by modifying a commercial atomic force microscope (AFM), Seiko SFA 300 with a SPI 3600 probe station. Distribution of surface potentials on test samples microlithographically prepared and on mixed Langmuir-Blodgett (LB) films coated on a vapor-deposited gold film could be imaged in a x-y spatial resolution less than 1 μm and compared with AFM images observed on the same samples.
Simultaneous Flow Injection Determination of Vanadium(IV) and (V) Based on Redox Reactions of Vanadium(IV) with Iron(III) and Vanadium(V) with Iron(II) in the Presence of 1,10-Phenanthroline and Diphosphate
Authors: Teshima Norio , Itabashi Hideyuki , Kawashima Takuji 
Published: May 2006

Abstract
A new flow injection analysis (FIA) method is presented for simultaneous determinations of vanadium(IV) and vanadium(V) with photometric detection. It is based on redox reactions of vanadium(IV) with iron(III) and vanadium(V) with iron(II) in the presence of 1,10-phenanthroline (phen) and diphosphate (pyrophosphate), respectively. The proposed method makes it possible to appear both positive and negative FIA peaks corresponding to the concentrations of vanadium(IV) and vanadium(V) alternatively.
Enantioselective Epoxidation of Unfunctionalized Olefins with Molecular Oxygen and Aldehyde Catalyzed by Optically Active Manganese(III) Complexes
Authors: Yamada Tohru , Imagawa Kiyomi , Nagata Takushi , Mukaiyama Teruaki 
Published: May 2006

Abstract
Enantioselective epoxidation of unfunctionalized olefins with combined use of molecular oxygen, an oxidant, and pivalaldehyde, a reductant, was demonstrated in the presence of a catalytic amount of optically active Mn(III)-salen complexes. Dihydronaphthalene derivatives were converted into the corresponding optically active epoxides in good yields with 60–77% enantiomeric excesses.
High Catalytic Activity of Platinum-ZSM-5 Zeolite below 500 K in Water Vapor for Reduction of Nitrogen Monoxide
Authors: Hirabayashi Hiroshi , Yahiro Hidenori , Mizuno Noritaka , Iwamoto Masakazu 
Published: May 2006

Abstract
Platinum ion-exchanged ZSM-5 zeolite efficiently reduced nitrogen monoxide to nitrogen by ethene in an oxidizing atmosphere below 500 K and the catalytic activity was not affected by the presence of 8.6 vol% water vapor.
Ruthenium-Catalyzed Oxidation of Cyclic Acetals with tert-Butyl Hydroperoxide. A Facile Synthesis of Glycol Monoesters
Authors: Murahashi Shun-Ichi , Oda Yoshiaki , Naota Takeshi 
Published: May 2006

Abstract
The ruthenium-catalyzed oxidation of cyclic acetals with tert-butyl hydroperoxide under mild conditions gives the corresponding glycol monoesters efficiently. The present oxidation reaction provides a useful method for the synthesis of glycol monoesters from 1-alkenes by combination with palladium-catalyzed acetalization of 1-alkenes.
Novel Alkynyl-substituted (p-Phenylene)bisiodonium Ditriflates. Preparation and Reaction with Thiocyanate Ion
Authors: Kitamura Tsugio , Furuki Ryuji , Zheng Lei , Fujimoto Takeshi , Taniguchi Hiroshi 
Published: May 2006

Abstract
Novel alkynyl(p-phenylene)bisiodonium ditriflates were prepared in good to high yields by reaction of trimethylsilylalkynes with PhIO activated with 2 equivalents of triflic acid. Reaction of the alkynylbisiodonium salts with potassium thiocyanate gave alkynyl thiocyanates in high yields and suggested that the alkynylbisiodonium salts serve as an agent for alkynylation of a nucleophilic substrate.
Photolysis of Alkynyl(phenyl)iodonium Salts. Remarkable Solvent Effect and Generation of Acids
Authors: Kitamura Tsugio , Tanaka Toshimasa , Taniguchi Hiroshi 
Published: May 2006

Abstract
Photolysis of alkynyl(phenyl)iodonium salts in CH2Cl2 resulted in major formation of iodobenzene, while the photolysis in EtOH, Et2O, or THF gave iodoalkynes as the main product. In addition to the organic products, acids were generated almost quantitatively by the photolysis and initiated polymerization of styrene.
Mutual Separation of Amino Acids in Aqueous Solutions with Silica-Containing Mixed-Oxide Gels
Authors: Kaneko Shoji , Ohmori Satoshi , Mikawa Masatsugu , Yamazaki Tatsuya , Nakamura Motoshi , Yamagiwa Sei-ichi 
Published: May 2006

Abstract
Mixed amino acids in aqueous solutions have successfully been separated mutually using silica-containing mixed-oxide gels as adsorbents: L-glutamic acid, glycine, and L-lysine have solely separated by a batch operation with silica-magnesia; L-glutamic acid and L-aspartic acid by a column operation with silica-alumina; L-histidine and L-lysine also by a batch operation with silica-titania.
Synthesis of α,β-Unsaturated Ketones Using Allylidenetriphenylphosphorane as a Three-carbon Unit
Authors: Hatanaka Minoru , Imashiro Ritsuo , Ueda Ikuo 
Published: May 2006

Abstract
3-Alkoxycarbonyl-2-ethoxy-2-propenylidenetriphenylphosphorane reacts in turn with alkyl halides and aldehydes in the presence of base via a one-pot procedure to give moderate to good yields of conjugated enol ethers. Hydrolysis of the conjugated enol ethers and subsequent decarboxylation provide a novel route to α,β-unsaturated ketones.
Desilylation Reactions of Poly[(t-butyldimethylsilyloxy)phenylacetylene]s
Authors: Yamaguchi Masahiko , Omata Kenji , Hirama Masahiro 
Published: May 2006

Abstract
Poly[4-(t-butyldimethylsilyloxy)-2-trimethylsilylphenylacetylene] and poly[5-ethynyl-3-(t-butyldimethylsilyloxy)phenyl (R)-2-phenylpropionate] were desilylated with Bu4NF in THF. The solution changed its color depending on the structure of the aromatic pendants.
First STM Observation of Silica and Platinum-on-Silica Model Catalyst Systems
Authors: Komiyama Masaharu , Kirino Manabu 
Published: May 2006

Abstract
Scanning tunneling microscopy (STM) images of silicon oxide surface and of Pt ultrafine particles deposited on it were obtained for the first time. The silicon oxide sample employed consists of a thin (ca. 0.7 nm thick) native silica film present on a Si(100) surface. The STM observation of these sample systems was critically dependent on the choice of the electron tunneling conditions.
Controlled Monooxygenation of n- and Isoalkanes with Molecular Oxygen Catalyzed in Nonheme Iron Complex/Hydroquinone Systems
Authors: Funabiki Takuzo , Kashiba Koji , Toyoda Takehiro , Yoshida Satohiro 
Published: May 2006

Abstract
Linear and branched alkanes are monooxygenated with O2 in nonheme iron complex/hydroquinone systems. Selectivity to form either alcohols or carbonyl compounds was controlled by the pyridine concentration. Reactivity of different types of C-H bonds was affected by the substituents of hydroquinones, suggesting that hydroquinones are located in the vicinity of an active center in the product formation step.
Lanthanide Complex with Armed Crown Ether as Heterotopic Carrier of Hydrophilic Amino Acid Ester Salts
Authors: Tsukube Hiroshi , Uenishi Jun’ichi , Higaki Hiromi , Kikkawa Ken’ichi 
Published: May 2006

Abstract
Lanthanide complex with bipyridine-armed crown ether was first demonstrated to mediate effective transport of hydrophilic HisOMe and LysOEt salts via two-point binding.
Measurement of Ice Fraction in NaCl Solution with FTIR
Authors: Mizoguchi Masaru , Low Philip F 
Published: May 2006

Abstract
Infrared spectra of 0.12 mm thick frozen NaCl solution from 1600 to 4000 cm−1 were obtained at sub-zero temperature with a FTIR spectrometer. The transmittance of the sample decreased sensitively with decreasing temperature around the frequency of 2700 cm−1. The volume fraction of ice in the NaCl solution, calculated from the absorbance at 2700 cm−1, agreed well with the values predicted from a phase diagram of the system H2O-NaCl.
The Effect of the Particle Size on the Anomalous Peaks observed with the DSC Measurements on Henpentacontane and Dopentacontane
Authors: Urabe Yoshiko , Takamizawa Kanichiro 
Published: May 2006

Abstract
DSC curves for henpentacontane and dopentacontane, when crystallized from the melt, showed anomalous sharp endothermic peaks on the region of the high-temperature phases. Grounding the samples made the peaks disappear. The appearance of the peak may be ascribed to the kinetic factors, not to the first order phase transition.
The Esterification Reaction between Silyl Derivatives of Carboxylic Acids and Alcohols by the Promotion of a Catalytic Amount of Lewis Acid
Authors: Shiina Isamu , Mukaiyama Teruaki 
Published: May 2006

Abstract
Various carboxylic esters are prepared in good to excellent yields by the reaction of equimolar amounts of silyl derivatives of carboxylic acids and alcohols by using a catalytic amount of active Lewis acid in hexamethyldisiloxane, a solvent.
Methylthio Substituted 2,5-Bis(1′,3′-dithiol-2′-ylidene)-1,3,4,6-tetrathiapentalene. A Bis-Fused Tetrathiafulvalene
Authors: Misaki Yohji , Nishikawa Hiroyuki , Kawakami Kazuya , Koyanagi Shiro , Yamabe Tokio , Shiro Motoo 
Published: May 2006

Abstract
Synthesis of the title compound (1), and its molecular structure determined by X-ray crystallographic analysis, and electrochemical property investigated by cyclic voltammetry are described. Several cation radical salts of 1 have been prepared by electrochemical oxidation method, and their electrical properties are also presented.
ESR Spectral Evidence for Existence of Electron-localized Species in Binuclear Manganese(III/IV) Compounds with Di-μ-oxo Bridge
Authors: Nishida Yuzo , Nasu Miyuki , Akamatsu Tetsuya , Tanno Miyuki 
Published: May 2006

Abstract
We have observed that the binuclear manganese(III/IV) compounds with di-μ-oxo bridge exhibit solvent-dependent solution ESR spectra at room temperature, and have concluded that there are two ESR-detectable species, electron-localized and electron-delocalized ones, in the solution.
Transition Metal-catalyzed Asymmetric Vinylcyclopropane-Cyclopentene Rearrangements with Chiral Phosphine Ligands. Dramatic Solvent Effects on Asymmetric Induction
Authors: Hiroi Kunio , Arinaga Yoshihisa , Ogino Takashi 
Published: May 2006

Abstract
A dramatic solvent effect was observed on the nickel-catalyzed asymmetric rearrangement of a cyclopropane system into an optically active cyclopentane derivative with chiral phosphine ligands. The stereochemistry of the product was readily controlled by selecting the catalyst, nickel or palladium, with extremely high enantioselectivity.