bluuebunny/crossref_metadata_2025_split huggingface dataset:
ACCELERATED DEACYLATION OF ACYLATED INTERMEDIATE BY HYDROXYL FUNCTIONALIZED SURFACTANT MICELLES
Authors: Ihara Yasuji , Okamoto Mari , Nango Mamoru , Koga Joichi 
Published: July 2006

Abstract
The rate constants of both acylation and deacylation processes in the hydrolysis of p-nitrophenyl esters by dipeptide catalysts have been determined in the presence of hydroxyl functionalized surfactant micelles. The functional surfactants enhance the deacylation rate constants and the large rate differences are observed between the dipeptide catalysts which have the reverse sequence of amino acid residues.
EXCELLENT, pH-SENSITIVE CATION-SELECTIVITIES OF BIS (MONOAZACROWN ETHER) DERIVATIVES IN MEMBRANE CATION TRANSPORT
Authors: Kimura Keiichi , Sakamoto Hidefumi , Koseki Yasuaki , Shono Toshiyuki 
Published: July 2006

Abstract
In cation transport through a membrane incorporating a lipophilic bis(monoaza-12-crown-4) derivative, extremely high sodium-selectivity is realized, which can be easily varied by pH values in the aqueous phase.
SIMPLE SYNTHESIS OF 3β,24-DIHYDROXYCHOL-5-EN-7-ONE BY OXIDATIVE CLEAVAGE OF THE SIDE CHAIN OF CHOLESTEROL
Authors: Takano Seiichi , Sato Seiji , Ogasawara Kunio 
Published: July 2006

Abstract
A Potential steroidal synthon, 3β,24-hydroxychol-5-en-7-one, has been prepared in facile manner from cholesterol by oxidative cleavage of the side chain with a mixture of 30% aqueous hydrogen peroxide, trifluoroacetic anhydride, and sulfuric acid.
GENERATION OF 7-METHOXYCARBONYL[5]PARACYCLOPHANE
Authors: Tobe Yoshito , Kaneda Teruhisa , Kakiuchi Kiyomi , Odaira Yoshinobu 
Published: July 2006

Abstract
7-Methoxycarbonyl[5]paracyclophane generated by photochemical valence isomerization of 8-methoxycarbonyl[5.2.2]propella-8,10-diene has been successfully characterized by UV and 1H NMR spectra.
SYNTHESIS OF AROMATIC THIOLS FROM ARYL IODIDES AND THIOUREA BY MEANS OF NICKEL CATALYST
Authors: Takagi Kentaro 
Published: July 2006

Abstract
Nickel(0) complex, generated in situ from bis(triethylphosphine)nickel(II) chloride and sodium cyanoborohydride, catalyzed the nucleophilic displacement of aryl iodides with thiourea. S-Aryl-isothiuronium salts or aromatic thiols were obtained in good yields after simple work-up procedures.
MICHAEL-TYPE ADDITIONS TO α,β-ENOYLIRON(CYCLOPENTADIENYL)DICARBONYL COMPLEXES AND ITS APPLICATION TO β-LACTAM SYNTHESIS
Authors: Ojima Iwao , Kwon Hyok Boong 
Published: July 2006

Abstract
Michael-type additions of amines and thiols to α,β-enoyliron(cyclopentadienyl)dicarbonyl complexes were carried out to give the corresponding new β-aminoalkanoyl- and β-thioalkanoyliron complexes in good to excellent yields. A β-aminoalkanoyliron complex was treated with bromine in the presence of triethylamine to give the expected β-lactam in an excellent yield.
NOVEL RHODIUM CLUSTER-CATALYZED REDUCTION OF NITROPROPANE TO PROPIONITRILE UNDER CO AND H2O
Authors: Kaneda Kiyotomi , Mori Teruaki , Kobayashi Masaya , Imanaka Toshinobu , Teranishi Shiichiro 
Published: July 2006

Abstract
Propionitrile is selectively formed by reduction of nitropropane using CO and H2O (8 atm of CO, 40 °C). Rhodium carbonyls combined with bases show high catalytic activity. Amines with high pKa values as additives give high yields of propionitrile.
FORMATION AND ‘OPSIN SHIFTS’ OF ARTIFICIAL RETINOCHROMES
Authors: Tsujimoto Kazuo , Ohashi Mamoru , Hara Reiko , Ozaki Koichi 
Published: July 2006

Abstract
Retinochromes in which the retinal is an artificial analog were synthesized, and their ‘Opsin Shifts’ were calculated. The values were compared with those of the natural retinochrome.
SYNTHESIS OF 2-(p-HYDROXYCINNAMOYL)-4-HYDROXY-4,6-DIMETHYLCYCLOHEXANE-1,3,5-TRIONE, AN ANALOG OF SAFFLOMIN A
Authors: Obara Heitaro , Machida Yoshihisa , Namai Sozo , Onodera Jun-ichi 
Published: July 2006

Abstract
The synthesis of 2-(p-hydroxycinnamoyl)-4-hydroxy-4,6-dimethylcyclohexane-1,3,5-trione, an analog of safflomin A, was investigated.
ALDOL CONDENSATIONS CATALYZED BY ORGANOALUMINUM REAGENTS
Authors: Naruse Yuji , Ukai Junzo , Ikeda Nobuo , Yamamoto Hisashi 
Published: July 2006

Abstract
A new synthetic procedure for the practical synthesis of β-trimethylsiloxyketones from silyl enol ethers and aldehydes has been described which heavily depends on organoaluminum reagent as an effective catalyst.
FISCHER–TROPSCH SYNTHESIS OF LIGHT OLEFINS CATALYZED BY Fe3(CO)12-MOH-HYZEOLITE AND Fe3(CO)12-MZSM5 (M=K OR Cs )
Authors: Mitsudo Take-aki , Boku Hideki , Murachi Satoshi , Ishihara Atsushi , Watanabe Yoshihisa 
Published: July 2006

Abstract
Fischer–Tropsch syntheses by two catalyst systems (A)Fe3(CO)12-MOH-HYZeolite and (B) Fe3(CO)12-MZSM5 (M=K or Cs) were performed using a pressurized fixed-bed flow reactor at 260-320 °C (CO/H2=1–1.5, 14 atm). On the catalyst (A), especially when M was Cs, the activity was very high (conversion of carbon monoxide was up to 75%) and stable. On both catalysts the main product was propylene.
EXCITED STATE MULTIPLICITY INVOLVED IN PHOTOCYCLOADDITION OF POLYMETHYLENE DICINNAMATES AS STUDIED BY QUENCHING EXPERIMENTS
Authors: Kuzuya Masayuki , Yokota Naohisa , Tanaka Mitsushi , Okuda Takachiyo 
Published: July 2006

Abstract
The excited state multiplicity involved in photocycloaddition of polymethylene dicinnamates was studied by quenching experiments using ferrocene, and the ratio of such multiplicities deduced from the Stern–Volmer plots based on a generalized Stern–Volmer expression was shown to vary depending upon the substituent and the methylene chain.
HIGHLY ENANTIOSELECTIVE REDUCTION OF δ-KETO ACIDS WITH FERMENTING BAKER’S YEAST. A FACILE SYNTHESIS OF OPTICALLY PURE (R)-(+)-5-HEXADECANOLIDE
Authors: Utaka Masanori , Watabu Hisashi , Takeda Akira 
Published: July 2006

Abstract
Optically pure (R)-(+)-hexadecanolide, (+)-5-tridecanolide, and (+)-5-nonanolide were prepared from the corresponding δ-keto acids by reduction with fermenting baker’s yeast.
KINETICS OF THE CLEAVAGE OF THE CHROMIUM–CARBON BOND IN N-2-HYDROXYETHYLETHYLENEDIAMINE-N,N′,N′-TRIACETATO (HYDROXYMETHYL)CHROMIUM(III) AND NITRILOTRIACETATO(HYDROXYMETHYL)AQUACHROMIUM (III)
Authors: Shimura Makoto , Ogino Hiroshi , Tanaka Nobuyuki 
Published: July 2006

Abstract
The hydrolysis of the Cr–C bond in N-2-hydroxyethylethylene-diamineN,N′,N′-triacetato(hydroxymethy1)chromium(III) (1) obeyed the rate law, -d[1]/dt = (k0 + k1[H+]) [1] at I = 1.0 (LiClO4) and 25.0 °C, while the reaction of nitrilotriacetato(hydroxymethyl)aquachromium(III) (2) obeyed -d[2]/dt = {(k0 + k0L[L]) + (k1 + k1L[L])[H+]}[2], where L denotes Hn nta(3−n)−.
OBSERVATIONS ON THE B3Σu− AND B″3Πu STATES OF SULFUR DIMER BY N2 LASER EXCITATION
Authors: Ban Taketora , Kasatani Kazuo , Kawasaki Masahiro , Sato Hiroyasu 
Published: July 2006

Abstract
Time-resolved fluorescence spectra from the B3Σu− and B″3Πu states of sulfur dimer have been studied by pumping the ground state 3Σg− dimer with a nitrogen laser at 337.1 nm. A lifetime of the B state was measured by an effusive molecular beam technique while that of the B″ state, by the bulb experiment. Quenching rates of these states were also obtained.
MAGNETIC FIELD EFFECT ON THE INTRAMOLECULAR HYDROGEN ABSTRACTION REACTION OF n-TETRADECYL ANTHRAQUINONE-2-CARBOXYLATE
Authors: Tanimoto Yoshifumi , Takashima Masanobu , Uehara Megumu , Itoh Michiya , Hiramatsu Mitsuo , Nakagaki Ryoichi , Watanabe Takeshi , Nagakura Saburo 
Published: July 2006

Abstract
The magnetic field effect on the intramolecular hydrogen abstraction of n-tetradecyl anthraquinone-2-carboxylate was studied in aerated 1,1,2-trichlorotrifluoroethane, using steady-state photolysis, two-step laser excitation fluorescence, and laser flash photolysis.
ELECTROCHROMISM OF GLASSES AND SPUTTERED AMORPHOUS FILMS IN THE SYSTEM Li2O–WO3–Nb2O5
Authors: Machida Nobuya , Sakono Ikuo , Tatsumisago Masahiro , Minami Tsutomu 
Published: July 2006

Abstract
Electrochromic absorption spectra were measured for rapidly quenched glasses and RF-sputtered amorphous films in the system Li2O–WO3Nb2O5. The absorption maximum was shifted to shorter wavelengths and the color varied from blue to brown with increasing Nb2O5 contents. The absorption maxima were broader in the sputtered films than in the rapidly quenched glasses, but no essential difference in absorption spectra was observed between the glasses and the sputtered films.
DRASTIC CHANGES OF CIRCULAR DICHROISM OF SYNTHETIC PHOSPHATE BILAYERS DUE TO INTERACTION WITH METAL IONS
Authors: Nakashima Naotoshi , Ando Reiko , Fukushima Hiroshi , Kunitake Toyoki 
Published: July 2006

Abstract
A chiral bilayer membrane containing the phosphate head group shows, in the crystalline phase, remarkably enhanced circular dichroism, which is suppressed specifically and sensitively by the interaction of the phosphate group with added ions.
SPONGIONELLIN AND DEHYDROSPONGIONELLIN, NEW FURANOSESTERTERPENES WHICH INHIBIT CELL DIVISION OF FERTILIZED STARFISH EGGS, FROM THE MARINE SPONGE SPONGIONELLA SP.
Authors: Kato Yuko , Fusetani Nobuhiro , Matsunaga Shigeki , Hashimoto Kanehisa 
Published: July 2006

Abstract
Two new furanosesterterpenes, spongionellin and dehydrospongionellin, have been isolated from the marine sponge Spongionella sp. Both compounds inhibit cell division of starfish eggs.
SYNTHESIS OF NATURAL AND UNNATURAL FRONTALIN
Authors: Hosokawa Takahiro , Makabe Yoshiki , Shinohara Toru , Murahashi Shun-Ichi 
Published: July 2006

Abstract
(S)-(−)- and (R)-(+)-Frontalin were synthesized, respectively, in high enantiomer excess from β-methallyl alcohol (2) by three-step procedure; (i) asymmetric epoxidation of 2, (ii) the epoxide opening with homoallylmagnesium bromide, and (iii) Pd(II)-catalyzed intramolecular acetalization.
SYNTHESIS OF (±)-NOR-STEREPOLIDE
Authors: Arai Yoshitsugu , Takeda Kunio , Masuda Katsutada , Koizumi Toru 
Published: July 2006

Abstract
A construction of the pentacyclic framework of sterepolide is described. Stereochemistry of the structure 2 is well established by unequivocal reaction sequences. The Diels-Alder adducts are transformed into a key intermediate 15 by a few steps. Conversion of 15 to 2 is effected by a Nazarov cyclization and subsequent selective reduction of the lactone carbonyl group.
TRITYL SALTS AS EFFICIENT CATALYSTS IN THE ALDOL REACTION
Authors: Kobayashi Shu , Murakami Masahiro , Mukaiyama Teruaki 
Published: July 2006

Abstract
In the presence of a catalytic amount of trityl salts, such as TrOTf, TrSbCl6, TrPF6, TrSnCl5, etc., silyl enol ethers react with aldehydes to give the corresponding aldols in good yields. The preferential formations of erythro or threo aldols become possible by the suitable choice of the counter anions of these trityl salts and the substituents on silicon of the enolates.
ENANTIOMER RESOLUTION OF AMINO ACIDS BY A POLYMER-SUPPORTED LIQUID MEMBRANE CONTAINING A CHIRAL CROWN ETHER
Authors: Yamaguchi Tomohiko , Nishimura Koichiro , Shinbo Toshio , Sugiura Masaaki 
Published: July 2006

Abstract
Differential transport of amino acids was examined through a polymer-supported liquid membrane containing a chiral crown ether, 2,3:4,5-bis[1,2-(3-phenylnaphtho)]-1,6,9,12,15,18-hexaoxacycloeicosa-2,4-diene. Enantiomer resolution ratio of 22.7 was obtained for Dl-phenylglycine. Differential uphill-transport was also achieved.
A SAd–SAd TRANSITION OF A HOMOLOGOUS SERIES OF 4-(4-ALKOXY-3-BROMOBENZOYLOXY)BENZOATES
Authors: Takenaka Shunsuke , Masuda Yoshihide , Kusabayashi Shigekazu , Nishihata Yasuo , Terauchi Hikaru 
Published: July 2006

Abstract
The thermal properties of some homologs of 4-cyanophenyl 4-(4-alkoxy-3-bromobenzoyloxy)benzoates have been examined, where the octyloxy homolog shows the reentrant phenomenon of a SAd–Nre–SAd–N–I type, and the nonyloxy and decyloxy homologs show the mesomorphism of a SAd–SAd–N–I type, and experience a SAd–SAd transition.
A SYNTHESIS OF Dl-PENTA-N,O-ACETYLVALIOLAMINE
Authors: Ogawa Seiichiro , Shibata Yasushi 
Published: July 2006

Abstract
Valiolamine, (2S)-(1,2,4,5/3)-5-amino-1-C-hydroxymethyl-1,2,3,4-cyclohexanetetrol, an α-glucosidase inhibitor isolated from Streptomyces hygroseopicus subsp. limoneus, has been synthesized as the racemic penta-N,O-acetyl derivative starting from Dl-1,2,3-tri-O-acetyl- (1,3/2,4)-4-bromo-6-methylene-1,2,3-cyclohexanetriol.
A HIGHLY STEREOSELECTIVE ROUTE TO 2-ALKENYLTRIMETHYLSILANES
Authors: Shimizu Nobujiro , Shibata Furmihiro , Tsuno Yuho 
Published: July 2006

Abstract
1,2-Epoxy-1,3-bis(trimethylsilyl)propane reacts with various Grignard reagents (RMgX) to give 1-R-2,3-bis(trimethylsilyl)-1-propanols which upon olefination with NaH or with BF3Et2O give the corresponding (Z) or (E)-2-alkenyltrimethylsilanes in moderate to good yields, respectively.
HETEROPOLY ANION-ASSISTED Rh CATALYSIS REVEALED IN THE HOMOGENEOUS SELECTIVE HYDROGENATION
Authors: Urabe Kazuo , Tanaka Yoshiyuki , Izumi Yusuke 
Published: July 2006

Abstract
When coupled with lithium salt of heteropoly acid, the Wilkinson complex RhCl(PPh3)3 catalyst became very active and selective for the semihydrogenation of alkyne to alkene and, more interestingly, exhibited sharp substrate-selectivity in hydrogenation of substituted alkenes.
CO HYDROGENATION OVER AN AMORPHOUS GOLD-ZIRCONIUM ALLOY
Authors: Shibata Masatoshi , Kawata Noboru , Masumoto Tsuyoshi , Kimura Hisamichi 
Published: July 2006

Abstract
An amorphous Au25Zr75 alloy showed a high catalytic activity for hydrogenation of carbon monoxide. Thus, the rate of methanation was 2.3 μmol s−1 g−1 under 6.0 MPa at 523 K, being much higher than that over Au/ZrO2 or ZrO2. It was found that the alloy was oxidized into metallic gold and ZrO2 under the reaction conditions.
ENANTIOFACE-DIFFERENTIATING HYDROGENATION OF 2-ALKANONES OVER MODIFIED RANEY NICKEL
Authors: Osawa Tsutomu 
Published: July 2006

Abstract
2-Octanone was hydrogenated over tartaric acid-NaBr-modified Raney nickel in the presence of pivalic acid at various temperatures. The hydrogenation at 50–60 °C gave the best result with regard to the optical yield. Almost 80% of the optical yields were attained in the hydrogenations of various 2-alkanones.
HIGHLY CONDUCTIVE SINGLE CRYSTALS OF METALLOPHTHALOCYANINE
Authors: Orihashi Yuji , Kobayashi Norihisa , Tsuchida Eishun , Matsuda Hiro , Nakanishi Hachiro , Kato Masao 
Published: July 2006

Abstract
Potassium dicyanocobalt(III)phthalocyanine was electrolyzed to form large single crystals (&gt;4 mm) of cyanocobalt(III)phthalocyanine with interplaner distance of 3.45 Å which showed conductivity of 5.7×101 S/cm without doping.
SYNTHESIS OF NOVEL CROWN ETHER INCORPORATING THE (−)-(5S,6R,13S,14R)-5,6,13,14-TETRAHYDRO-5,13-METHANOCYCLOOCTA[1,2-a:5,6-a′]DINAPHTHALENE-6,14-DIOL SUBUNIT AS THE C2-SYMMETRIC CHIRAL CENTER
Authors: Naemura Koichiro , Fukunaga Rinko 
Published: July 2006

Abstract
(−)-5,6,13,14-Tetrahydro-5,13-methanocycloocta[1,2-a:5,6-a′]dinaphthalene-6,14-diol was synthesized and its absolute configuration was established. Optically active crown ether was prepared by using this glycol as a source of chirality and its chiral recognition property was examined.
DIASTEREOSELECTIVE SYNTHESIS OF 2,3-EPOXYALKYLPHOSPHONATES AND PHOSPHINATES BY EPOXIDATION
Authors: Nagase Toshio , Kawashima Takayuki , Inamoto Naoki 
Published: July 2006

Abstract
The title compounds were prepared highly diastereoselectively by treatment of 2-alkenylphosphonates and phosphinates with m-chloroperbenzoic acid or MoO5-HMPA complex in good yields.
ISOMER SELECTION OF 1,6-DIAMINOHEXANECADMIUM(II) TETRACYANONICKELATE(II) FOR m- AND p-TOLUIDINE. FORMATION OF 1,6-DIAMINOHEXANECADMIUM(II) TETRACYANONICKELATE(II)-m-TOLUIDINE(1/1) INCLUSION COMPOUND AND BIS(p-TOLUIDINE)-1,6-DIAMINOHEXANECADMIUM(II) TETRACYANONICKELATE(II) COMPLEX
Authors: Hasegawa Tai , Nishikiori Shin-ichi , Iwamoto Toschitake 
Published: July 2006

Abstract
Under substantially the same preparation conditions applied to the m- and the p-isomers of toluidine with the aqueous solution containing cadmium(II) chloride, potassium tetracyanonickelate(II), 1,6-diaminohexane, and some additives, the m-isomer gives an inclusion compound 1,6-diaminohexanecadmium(II) tetracyanonickelate(II)-m-toluidine(1/1) as well as the o-isomer does, whereas the p-isomer forms a metal complex bis (p-toluidine) -1,6-diaminohexanecadmium(II) tetracyanonickelate(II).
SUBSTITUTION OF THE AXIAL LIGAND IN BIS(3,4-DIMETHYLPYRIDINE)BIS (2,2′-DIFURYLGLYOXIMATO)IRON(II) BY CYANIDE IN CHLOROFORM
Authors: Sasaki Yoshihiro 
Published: July 2006

Abstract
The reaction of bis(3,4-dimethylpyridine)bis(2,2′-difurylglyoximato)iron(II), [Fe(Hfr)2(3,4-me2py)2], with \lap\bigcirc K CN is studied spectrophotometrically in chloroform, where \lap\bigcirc K CN represents KCN with 18-crown-6. The nitrogen base molecules in the complex are substituted stepwisely by cyanide. The mechanisms of the two reaction steps are discussed on the basis of the measurements of the pseudo-first-order rate constants.
[2,3]WITTIG REARRANGEMENT-BASED APPROACHES TO STEREOCONTROL OVER THREE CONTIGUOUS CHIRAL CENTERS. NEW ENTRIES TO THE (±)-PRELOG-DJERASSI LACTONE
Authors: Nakai Ei-ichi , Kitahara Ei-ichiro , Sayo Noboru , Ueno Yoshio , Nakai Takeshi 
Published: July 2006

Abstract
Three [2,3]Wittig-based approaches for stereocontrol over three contiguous chiral centers are described within the synthesis of the title lactone. In these methods, the erythro-selective [2,3]Wittig variants are combined with one of the stereoselective processes: the Michael addition, the radical cyclization, and the hydroboration.
CARBOXYLATION OF ALCOHOLS WITH CARBON MONOXIDE SUPERSATURATED IN STRONG ACID. FACILE SYNTHESIS OF 2,2-BIS(4-HALOPHENYL)ACETIC,-PROPIONIC, AND RELATED ACIDS
Authors: Takahashi Yukio , Yoneda Norihiko , Nagai Hiroshi 
Published: July 2006

Abstract
Using 97% H2SO4 supersaturated with carbon monoxide, bis(4-halophenyl)methanols, 1,1-bis (4-halophenyl) ethanols and related alcohols were transformed to the carboxylic acids in 60–95% yields.
PHOTO-INDUCED CHARGE SEPARATION IN CARBAZOLE-CONTAINING BILAYER MEMBRANE IN THE PRESENCE OF VARIOUS ELECTRON ACCEPTORS
Authors: Takeyama Naoki , Sakaguchi Hiroshi , Hashiguchi Yuichi , Shimomura Masatsugu , Nakamura Hiroshi , Kunitake Toyoki , Matsuo Taku 
Published: July 2006

Abstract
Double-chain ammonium amphiphile with carbazole moiety affords spontaneous assemblage, bilayer vesicles, in aqueous solution. Laser-excitation of aligned carbazole units in the bilayer liberates electron, which lead to long-living charge-separated states (ca. 50 μs-5 ms) in the presence of appropriate electron acceptors.
ALUMINIUM-27, PHOSPHORUS-31, AND SILICON-29 MAS NMR STUDIES OF THE SILICOALUMINOPHOSPHATE MOLECULAR SIEVE SAPO-5
Authors: Appleyard Ian P , Harris Robin K , Fitch Frank R 
Published: July 2006

Abstract
Multinuclear MAS NMR has been used to study, for the first time, a member of a new family of molecular sieves, the silicoaluminophosphates, SAPO-5. The silicon-29 NMR spectra are consistent with tetrahedral (framework) silicon and provide information concerning the method of substitution of the silicon atoms into the aluminophosphate lattice.
ENANTIOSELECTIVE SYNTHESIS OF α-HYDROXYTHIOACETALS BY THE BAKER’S YEAST REDUCTION OF α-KETOTHIOACETALS
Authors: Fujisawa Tamotsu , Kojima Eiji , Itoh Toshiyuki , Sato Toshio 
Published: July 2006

Abstract
Asymmetric reduction of a-ketothioacetals was achieved by fermenting baker’s yeast to afford optically pure α-hydroxythioacetals which play as equivalents of valuable α-hydroxy aldehydes. The utility of the present method was demonstrated in the stereo-selective syntheses of (4S,5S)- and (4S,5R)-4,5-dihydroxydecanoic acid γ-lactones from (S)-(−)-1-(1,3-dithian-2-yl)-1,4-butanediol.
HIGHLY CONDUCTIVE COMPLEXES OF BIS-1,2,5-THIADIAZOLO-TETRACYANOQUINODIMETHAN (BTDA-TCNQ) WITH AMINES
Authors: Yamashita Yoshiro , Suzuki Takanori , Saito Gunzi , Mukai Toshio 
Published: July 2006

Abstract
Charge–transfer complexes of bis-1,2,5-thiadiazolo-tetracyano–quinodimethan (BTDA-TCNQ) with various donors were prepared. The 1:1 complex of dimethyldihydrophenazine with BTDA-TCNQ was found to be highly conductive. Factors governing the conductivities were investigated.
LITHIUM ION TITRATION OF LAYERED TITANIC ACID, H2Ti3O7
Authors: Izawa Hajime , Yasuda Fumio , Kikkawa Shinichi , Koizumi Mitsue 
Published: July 2006

Abstract
A lithium ion titration curve of H2Ti3O7 was measured with pH value of solution in equilibrium with the exchanger. There might be two different exchangeable sites in the interlayer region of H2Ti3O7. A new metastable phase, Li2Ti6O13, was obtained by a dehydration of the Li+-exchanged product in the temperature range of 300–500 °C.
BIOMIMETIC RADICAL REARRANGEMENT OF A THIOESTER GROUP MEDIATED BY A COBALT COMPLEX, COBALOXIME
Authors: Tada Masaru , Inoue Kunimi , Sugawara Keiji , Hiratsuka Mitsunori , Okabe Masami 
Published: July 2006

Abstract
The possible involvement of cobalt in the radical rearrangement of a thioester group was tested by using cobaloxime as a mimic of cobalamin. The coexistence of cobaloxime(II) species stimulates the rearrangement of the thioester group. A coordinative interaction between sulfur and cobalt is proposed for the assistance of this rearrangement.
SELF-DIFFUSION OF METHYLAMMONIUM CATIONS IN THE HIGHEST TEMPERATURE SOLID PHASE OF (CH3NH3)2SO4 AS REVEALED BY 1H NMR TECHNIQUES
Authors: Ishida Hiroyuki , Matsuhashi Noritoshi , Ikeda Ryuichi , Nakamura Daiyu 
Published: July 2006

Abstract
The 1H NMR parameters of solid methylammonium sulfate were determined at various temperatures. A first-order phase transition was located at 428 K for this salt. Above this temperature, the cations were found to perform self-diffusion as well as overall rotation about their center of gravity.
CATALYTIC ELECTROREDUCTION OF MOLECULAR OXYGEN USING [5,10,15,20-TETRAKIS-(1-METHYLPYRIDINIUM-4-YL)PORPHINATO]MANGANESE
Authors: Kobayashi Nagao , Saiki Hiroshi , Osa Tetsuo 
Published: July 2006

Abstract
The water-soluble manganese porphyrin in the title was found to catalyze electroreduction of oxygen. The reaction could be explained by an electrochemical (EC) catalytic regeneration mechanism, and at the porphyrin concentrations of more than ca. 5×10−5 mol dm−3 two-electron reduction was attained. Electronic absorption and magnetic circular dichroism (MCD) spectroscopies have suggested that the active species of the porphyrin is in a high-spin divalent state.
INCLUSION PROPERTIES OF N,N,N′,N′-TETRAISOPROPYLOXAMIDE AND CRYSTAL STRUCTURE OF ITS 1:1 COMPLEX WITH 1-METHYLNAPHTHALENE
Authors: Toda Fumio , Tanaka Koichi , Tagami Yasunori , Mak Thomas C W 
Published: July 2006

Abstract
N,N,N′,N′-Tetraisopropyloxamide forms crystalline inclusion complexes with a variety of aromatic compounds, and X-ray analysis of its 1:1 complex with 1-methylnaphthalene showed that the aromatic guest molecules are stacked in columns parallel to the b axis.
127I NUCLEAR MAGNETIC RESONANCE STUDIES ON THE INTERACTION OF IODIDE ION WITH HORSERADISH PEROXIDASE
Authors: Sakurada Junji , Hosoya Toichiro , Shimizu Toru , Hatano Masahiro 
Published: July 2006

Abstract
The binding of I− to horseradish peroxidase was studied with 127I NMR technique. The broadened line width of I−/enzyme solution was further increased remarkably by decreasing pH. The change of 127I NMR line width of the I−/enzyme solution caused by decreasing pH bore resemblance to the change of iodide oxidation catalyzed by the enzyme at acidic pH.
A STATE ANALYSIS METHOD OF TRANSITION-METAL ELEMENTS BY AN ELECTRON PROBE MICROANALYZER
Authors: Fujimori Haruo , Iba Hajime , Komori Itaru 
Published: July 2006

Abstract
It was shown that the chemical state of nickel or cobalt could be identified by the state analysis method utilizing the 9th-order Kα1 line. Probable factors of the X-ray intensity variation with chemical state were the self-absorption, the L2L3M4,5 Coster–Kronig process, and the pseudo Lβ emission.
A MILD AND EFFICIENT DEBROMINATION OF VICINAL DIBROMOALKANES WITH SODIUM TELLURIDE PREPARED FROM TELLURIUM AND RONGALITE
Authors: Suzuki Hitomi , Inouye Masahiko 
Published: July 2006

Abstract
Vicinal dibromoalkanes are debrominated to alkenes with remarkable ease by treatment with sodium telluride prepared from tellurium and Rongalite in aqueous alkaline medium.