bluuebunny/crossref_metadata_2025_split huggingface dataset:
A NOVEL TETRAVALENT SULFUR COMPOUND, 1,3,6-TRIPHENYLIMIDAZO[ 1,2-c]THIAIVZOLE; SYNTHESIS AND PERIPHERAL CYCLOADDITION REACTION
Authors: Tsuge Otohiko , Kanemasa Shuji , Hamamoto Takayoshi 
Published: July 2006

Abstract
A novel tetravalent sulfur compound, 1,3,6-triphenylimidazo[ 1,2-c]thialvzole, was synthesized, which reacted with N-(p-tolyl)maleimide as both an azomethine ylide and a thiocarbonyl ylide 1,3-dipole yielding four 1:1 adducts that contained each endo and exo isomers. The cycloadducts of azomethine ylide were found to isomerize into those of thiocarbonyl ylide through a retro 1,3-dipolar cycloaddition reaction. It was offered that this nitrogen-bridged tetravalent sulfur compound was to be designated as a bi-perifunctional compound.
RECOGNITION OF THE AMINOACYL-tRNA-SYNTHETASE BY THE COGNATE U SHAPED tRNA AND ITS RELATION TO THE GENETIC CODE
Authors: Shimizu Mikio 
Published: July 2006

Abstract
The U shaped tRNA can fit to the cognate aminoacyl-tRNA-synthetase, by making a covalent adduct of its uracil at position 8 to the C-terminal half of the synthetase. Then the complex of three anitcodon bases with a discriminator base (C4N, complex of four nucleotides) comes over the Rossmann fold of the synthetase and many features concerning with the genetic code can be explained, including the membrane transport of the amino acids by the help of the uncharged cognate tRNAs.
IMMOBILIZATION OF ENZYME BY PLASMA-INITIATED POLYMERIZATION
Authors: Osada Yoshihito , Iino Yasuhiro , Iriyama Yu 
Published: July 2006

Abstract
Invertase was immobilized by the plasma-initiated polymerization, exposing the glow-discharge plasma for 60–90 sec onto the aqueous vinyl monomers, followed by the postpolymerization at room temperature. Obtained enzymes in the pellet and the film exhibited high activities for a long period of time without any leakage of the enzyme.
LATTICE PARAMETERS AND ELECTRICAL CONDUCTIVITY IN Li2O DOPED ZnO
Authors: Miyayama Masaru , Takuma Yasuhisa , Yanagida Hiroaki 
Published: July 2006

Abstract
Lattice parameters, electrical conductivity and optical absorption for Li2O doped ZnO were examined as a function of Li2O content. As the Li2O content increased, both c-axis dimension and conductivity decreased initially reaching the minima at the Li2O content of 0.05∼0.1 mol% and later increased. These results can be interpreted such that the incorporation of Li took place at substitutional sites for low Li2O content and at both interstitial and substitutional sites for more than 0.05mol% Li2O.
FORMATION OF A Mg(II)–O2− ADDUCT FROM THE REACTION OF Mg(II) ION WITH SUPEROXIDE ION, O2−, IN ACETONITRILE
Authors: Ozawa Toshihiko , Hanaki Akira 
Published: July 2006

Abstract
Superoxide ion, O2−, generated by the electrolytic reduction of molecular oxygen in acetonitrile associates with Mg(II) ion to form the Mg(II)–O2− complex. The formation of adduct was verified by ESR spectrometry.
RHODIUM(II) ACETATE: AN EFFECTIVE HOMOGENEOUS CATALYST FOR SELECTIVE ALLYLIC OXIDATION AND CARBON–CARBON BOND FISSION OF OLEFINS
Authors: Uemura Sakae , Patil Suresh R 
Published: July 2006

Abstract
Treatment of some cyclic olefins and allylbenzene with Rh2(OAc)4 in acetic acid in the presence of t-BuOOH gave the corresponding enones and allylic acetates, the former being predominant. Application to several styrene derivatives resulted in a selective C=C bond fission to give benzaldehyde or acetophenone. It is suggested that the reaction proceeds catalytically with Rh(II) acetate via an ionic pathway.
ASYMMETRIC SYNTHESIS OF α-AMINO ACIDS BY NONENZYMATIC TRANSAMINATION. VERSATILITY OF THE REACTION AND ENANTIOMERIC EXCESSES OF THE PRODUCTS
Authors: Tachibana Yoji , Ando Makoto , Kuzuhara Hiroyoshi 
Published: July 2006

Abstract
Diverse α-keto acids were transformed into the corresponding α-amino acids with enantiomeric excesses ranging from 60 to 96% by the reaction with chiral pyridoxamine analog, (R)- or (S)-15-aminomethyl-14-hydroxy-5,5-dimethyl-2,8-dithia [9] (2,5)pyridinophane (4), and Zn2+ in the molar ratio of 2:1, in methanol. The use of the S enantiomer of 4 gave (R)-α-amino acids, and vice versa.
ASYMMETRIC SYNTHESIS OF α-AMINO ACIDS BY NONENZYMATIC TRANSAMINATION. RATIONALIZATION FOR THE STEREOCHEMICAL RESULTS
Authors: Tachibana Yoji , Ando Makoto , Kuzuhara Hiroyoshi 
Published: July 2006

Abstract
Asymmetric induction in the nonenzymatic transamination from the chiral pyridoxamine analog (1) to the α-keto acids in the presence of a limited amount of zinc ion can be explained by the kinetically controlled stereoselective protonation to the carbanion formed in an octahedral Zn2+ chelate intermediate during the reaction.
REACTIONS OF BENZYNE WITH SULFIDES HAVING A CARBOXYL GROUP. A NOVEL SYNTHESIS OF ESTER AND LACTONE
Authors: Nakayama Juzo , Fujita Toko , Hoshino Masamatsu 
Published: July 2006

Abstract
Reactions of benzyne with o- and p-(alkylthio)benzoic acids afford alkyl o- and p-(phenylthio)benzoates in varied yields, while reaction with o-(phenylthio)methylbenzoic acid gives phthalide and diphenyl sulfide in good yields.
SYNERGISTIC EFFECT IN ALUMINA SUPPORTED Pt–Ru BIMETALLIC CLUSTER CATALYSTS USED FOR DEHYDROGENATION OF CYCLOHEXANE
Authors: Miura Hiroshi , Osawa Masashi , Suzuki Tsutomu , Sugiyama Kazuo , Matsuda Tsuneo 
Published: July 2006

Abstract
The dehydrogenation of cyclohexane, accompanying hydrogenolysis, was studied over well characterized Pt–Ru/Al2O3 catalysts. For dehydrogenation synergistic effect was clearly observed, whereas for hydrogenolysis simple dilution effect was observed.
REARRANGEMENT OF ALLYLIC N-PHENYLFORMIMIDATES TO N-ALLYL-N-PHENYLFORMAMIDES CATALYZED BY PALLADIUM COMPLEXES
Authors: Ikariya Takao , Ishikawa Yasutoshi , Hirai Kiyomiki , Yoshikawa Sadao 
Published: July 2006

Abstract
The palladium complexes such as Pd(PPh3)4 and Pd(PhCN)2Cl2 catalyzed the rearrangement of allylic N-phenylformimidates to give N-allyl-N-phenylformamides under a mild condition. The reaction courses are strongly influenced by the oxidation state of palladium complexes used.
ELECTROCHEMICAL S–S BOND FISSION OF 4-(2-BENZOTHIAZOLYLDITHIO)AZETIDINONES (KAMIYA’S DISULFIDES)
Authors: Torii Sigeru , Tanaka Hideo , Siroi Takashi , Sasaoka Michio , Saitoh Norio , Nokami Junzo , Tada Nobuhito 
Published: July 2006

Abstract
An electrochemical S-S bond fission of 4-(2-benzothiazolyldithio)azetidinones derived from penicillin G has been achieved by the selection of an appropriate electrolysis system, providing either 2β-halomethylpenicillins, 3β-halocephams, or 4-methoxysulfinylazetidinone derivatives.
SYNTHESIS AND PROPERTIES OF 4- AND 4,5-SUBSTITUTED 2,7-DI-tert-BUTYLTHIEPINS
Authors: Yamamoto Kagetoshi , Yamazaki Shoko , Kohashi Yasuji , Matsukawa Atsuhito , Murata Ichiro 
Published: July 2006

Abstract
Various 4- and 4,5-substituted 2,7-di-tert-butylthiepins such as 4-ethoxycarbonyl-(6), 4-formyl- (7), 4-hydroxymethyl- (8), 4-methyl- (12), 4-methy1-5-hydroxymethy1-(13), and 4,5-dimethyl derivatives (16), and so on, were synthesized by functional group transformation and some of their properties were examined.
LATTICE CONSTANTS OF MONOCLINIC (La0.8Ca0.2)MnO3
Authors: Tanaka Junzo , Takahashi Koichiro , Yajima Yoshiyuki , Tsukioka Masayuki 
Published: July 2006

Abstract
The homogeneous sample of (La0.8Ca0.2)MnO3 was prepared by the coprecipitation method and its lattice constants were determined by X-ray powder diffraction to be a=c=7.759Å, b=7.745Å and β=90.3°. The homogeneity of the distribution of ions can be seen in the narrow half-widths of X-ray reflections.
SYNTHESIS OF PLERAPLYSILLIN-1
Authors: Masaki Yukio , Hashimoto Kinji , Serizawa Yuzuru , Kaji Kenji 
Published: July 2006

Abstract
A marine sesquiterpene, pleraplysillin-1 was synthesized by way of coupling of an ochtodane derivative with 3-furfuryl bromide, and regio- and stereoselective olefinations.
ISOMERIZATION OF BUTYNES TO 1,3-BUTADIENE OVER SOLID BASE CATALYSTS
Authors: Sato Kenji , Hattori Hideshi 
Published: July 2006

Abstract
1-Butyne and 2-butyne underwent isomerization to 1,3-butadiene over CaO, SrO, MgO, La2O3, ThO2 and ZrO2 catalysts below 100°C. Among these catalysts, the CaO catalyst exhibited the highest activity, and was active even at 30°C.
5-CYCLOHEPTATRIENYLIDENE-2(5H)-FURANONE CHARACTERIZATION OF A FURAN-INSERTED TYPE COMPOUND OF TROPONE
Authors: Takahashi Kazuko , Nishijima Kazumi , Makino Naonori , Takase Kahei , Katagiri Shigeyoshi 
Published: July 2006

Abstract
The title compound, a new inserted type tropone, has been prepared. This planar compound showed an unexpectedly small contribution of the dipolar structure to the ground state, as compared with parent tropone, suggesting a general trend that the net conjugative electronic interaction between a cycloheptatrienylidene group and an electronegative oxygen atom is slight. The slight conjugative interaction was evidenced by a weak electronic spectral E1 band having a C-T character.
HYDROGEN SENSITIVE GAS DETECTOR USING SILVER ADDED TIN(IV) OXIDE
Authors: Yamazoe Noboru , Kurokawa Yasuhiro , Seiyama Tetsuro 
Published: July 2006

Abstract
A semiconductor gas sensor using silver added tin dioxide was found to exhibit high sensitivity to H2 compared with that to C3H8, CH4, or CO at RT ∼250°C. The promoting effects of Ag for the H2 detection was very sensitive to its loading, an optimum loading being ca. 1.5 wt%.
SPONTANEOUS RESOLUTION AND CRYSTAL STRUCTURE OF BIS(ETHYLENEDIAMINE) (2-SELENINATOETHYLAMINE)COBALT(III) NITRATE
Authors: Okamoto Ken-ichi , Konno Takumi , Nomoto Masayo , Einaga Hisahiko , Hidaka Jinsai 
Published: July 2006

Abstract
The absolute configuration of the spontaneously resolved title compound was determined by X-ray diffraction study. The employed crystal which showed a negative CD value at 500 nm has Δ configuration. The 2-seleninatoethylamine is bound to the cobalt atom by the N and O atoms and the asymmetric selenium atom takes S configuration. The six-membered chelate ring formed takes a chair conformation.
PRE-MELTING STATE OF METHYLAMMONIUM NITRATE AND PERCHLORATE AS REVEALED BY 1H NMR STUDIES
Authors: Ishida Hiroyuki , Ikeda Ryuichi , Nakamura Daiyu 
Published: July 2006

Abstract
A new unusual crystalline phase of methylammonium nitrate and perchlorate, where methylammonium-ionic diffusion takes place, was found at various temperatures between 352 and 384 K, and above 451 K, respectively. The activation energy for the self-diffusion of the cation in both salts was determined as 29 kJ mol−1.
MOLYBDENUM PEROXIDE-CATALYZED REACTION OF 1,2-DIOLS WITH DIMETHYL SULFOXIDE
Authors: Masuyama Yoshiro , Usukura Masa-aki , Kurusu Yasuhiko 
Published: July 2006

Abstract
The reaction of 1,2-diols with dimethyl sulfoxide-catalytic molybdenum peroxide in refluxing toluene generally resulted in monoprotection of diols to give 2-methylthiomethoxy-l-ols (Course A) Exceptionally, a) cis-1,2-cyclooctanediol and benzopinacol, and b) 1,2-cyclododecanediol caused C–C bond cleavage (Course B) and monooxidation (Course C), respectively as Scheme 1.
POTENTIOMETRIC STUDY OF HETEROPOLYANION FORMATION FROM METHYLARSONATE AND MOLYBDATE ANIONS
Authors: Takahama Hironobu , Yagasaki Atsushi , Sasaki Yukiyoshi 
Published: July 2006

Abstract
The equilibria between CH3AsO32−, MoO42− and proton were studied by the use of a glass electrode in 1M Na(Cl) ionic medium at 25 °C. The data were explained assuming (H+)p(MoO42−)q (CH3AsO32−)r where (p,q,r) = (7,4,1), (8,4,1), (12,6,1), (13,6,1) together with (11,6,2) or (12,6,2).
DIASTEREOMERS OF ROTAXANE COMPOSED OF LONG-BRIDGED DINUCLEAR COBALT(III) COMPLEX AND α-CYCLODEXTRIN
Authors: Yamanari Kazuaki , Shimura Yoichi 
Published: July 2006

Abstract
Two optically active diastereomers of [2]- [[(en)2Co{NH2(CH2)2S(CH2)12S(CH2)2NH2}Co(en)2]Cl6]-[α-cyclodextrin]-rotaxane, [ΔΔ]-[α-CDX] and [ΛΛ]-[α-CDX], were isolated and characterized from their absorption, circular dichroism, and 13C NMR spectra. The yield of ΔΔ isomer is ca. 28%, whereas that of ΔΔ isomer only ca. 14%.
MOLECULAR STRUCTURE OF [(η5-C5H5)2Zr(CH2=C(CH3)=CH-CH2)  \llap—C(CH3)] PREPARED BY REGIOSELECTIVE INSERTION OF 2-BUTYNE TO Zr(η5-C5H5)2(ISOPRENE)
Authors: Kai Yasushi , Kanehisa Nobuko , Miki Kunio , Kasai Nobutami , Mashima Kazushi , Nagasuna Kinya , Yasuda Hajime , Nakamura Akira 
Published: July 2006

Abstract
The X-ray structure analysis revealed a unique 1-3-η;6-η-(2E,5Z)-2,5-dimethyl-2,5-heptadien-1,6-diyl ligand bound to Zr(η5-C5H5)2 species.
A NEW TYPE OF CRYSTALLINE 1:1 MOLECULAR COMPLEX FORMATION SPECIFIC FOR THE SHAPE OF NONPOLAR GROUPS
Authors: Endo Tadashi , Miyazawa Kazuhiro , Endo Masayuki , Uchida Akira , Ohashi Yuji , Sasada Yoshio 
Published: July 2006

Abstract
The formation of crystalline 1:1 molecular complexes was examined between a pair of acylurea derivatives (1 and 2) having a wide variety of alkyl groups as nonpolar substituents (R1 and R2). The complex formation has been found to depend on the shapes of R1 and R2. This suggests the presence of specific weak interactions between the nonpolar groups.
THE CRYSTAL STRUCTURE OF DI(2,3,6,7-TETRAMETHYL-1,4,5,8-TETRASELENAFULVALENIUM)TETRAFLUOROBORATE, (TMTSF)2BF4
Authors: Kobayashi Hayao , Kobayashi Akiko , Saito Gunzi , Inokuchi Hiroo 
Published: July 2006

Abstract
The crystals of 2C10H12Se41⁄2+.BF4−((TMTSF)2BF4) belong to the triclinic system. The space group is P\={l} and the lattice constants are: a=7.255(1), b=7.647(1), c=13.218(3) Å, α=82.23(2), β=87.15(2), γ=70.36(1)°, Z=1, V=688.10 Å3. The nearly planar TMTSF groups stack in diadic columns along a. The intrastack and interstack contacts between Se atoms show the two-dimensional nature of the crystal.
Rh(I) COMPLEXES CONTAINING FULLY ALKYLATED MONO- AND DIPHOSPHINE LIGANDS AS HIGHLY ACTIVE HYDROGENATION CATALYSTS FOR CARBONYL COMPOUNDS
Authors: Tani Kazuhide , Suwa Kenichi , Tanigawa Eiji , Yoshida Toshikatsu , Okano Tamon , otsuka Sei 
Published: July 2006

Abstract
Our search for highly active hydrogenation catalysts for carbonyl compounds, starting with neutral Rh(I) hydride complexes, [RhH(PR3)n] (R=i-Pr, n=3; R=Cy, n=2), has led to the discovery of cationic Rh(I) complexes with fully alkylated diphosphine ligands, [Rh{(i-Pr)2P(CH2)nP(i-Pr)2}(NBD)]Cl04 (n=3,4). These compounds prove to be versatile and efficient for hydrogenation of a variety of carbonyl compounds, including aldehydes.
A PVC MATRIX MEMBRANE COPPER ION-SELECTIVE ELECTRODE BASED ON A MACROCYCLIC POLYTHIAETHER
Authors: Kamata Satsuo , Higo Morihide , Kamibeppu Takashi , Tanaka Ichiro 
Published: July 2006

Abstract
The polyvinyl chloride (PVC) membrane electrode based on the macrocyclic polythiaether, 13,14-benzo-1,4,8,11-tetrathiacycropentadecane (TTX), exhibits the Nernstian behavior to the copper ion. The response time is rapid (&lt; 20 sec) and the detection limit is of the order of 10−5 M.
INTRAMOLECULAR WITTIG-HORNER REACTION OF DIMETHYL 2-(o-ACYLBENZOYL)-l, 2-DIHYDROISOQUINOLINE-l-PHOSPHONATE : FACILE SYNTHESIS OF AN ISOQUINOLINE ALKALOID SKELETON
Authors: Akiba Kin-ya , Negishi Yoshio , Inamoto Naoki 
Published: July 2006

Abstract
Dimethyl 2-(o-acylbenzoyl)-1,2-dihydroisoquinoline-1-phosphonates (3) were prepared from isoquinoline, o-acylbenzoyl chloride, and trimethyl phosphite. Intramolecular Wittig-Horner reaction of 3 with LDA afforded good yields of 13-substituted 8H-dibenzo [a, g]quinolizin-8-ones (4) which bear an isoquinoline alkaloid skeleton.
PHOTO-OXIDATION OF ARYL ETHERS IN THE PRESENCE OF FERRIC CHLORIDE
Authors: Seguchi Kazuyoshi , Hirota Sanae 
Published: July 2006

Abstract
Photo-oxidation of aryl ethers in the presence of ferric chloride in aqueous acetonitrile afforded alcohols, aldehydes (or ketones), and N-alkylacetamides. One electron-transfer mechanism from the ether to Fe(III) was suggested for this photo-oxidation.
SOLVOLYSIS OF SPIRO[2.5]OCTA-1,4,7-TRIEN-6-ONES EVIDENCE OF A VINYL CATION INTERMEDIATE
Authors: Ikeda Toshihiko , Kobayashi Shinjiro , Taniguchi Hiroshi 
Published: July 2006

Abstract
Ethanolysis of 1-aryl-5,7-di-t-butyl-2-phenylspiro[2.5]octa-1,4,7-trien-6-one 2 proceeds via a vinyl cation generated by opening of the cyclopropene ring, judging from regiospecific ring opening and kinetics (ρ+=−3.0, m= 0.53, and rate dependence on pH of the solvent).
A NEIGHBOURING GROUP PARTICIPATION OF ORTHO-METHOXYL GROUP IN SOLVOLYTIC REACTION OF SPIRO[2.5]OCTA-1,4,7-TRIEN-6-ONES
Authors: Ikeda Toshihiko , Kobayashi Shinjiro , Taniguchi Hiroshi 
Published: July 2006

Abstract
In aqueous ethanol 1-aryl-5,7-di-t-butyl-2-(o-methoxyphenyl)spiro[2.5]octa-1,4,7-trien-6-one 4 changed to 2-aryl-3-(3′,5′-di-t-butyl-4′-hydroxyphenyl)benzofuran 5 in a more than 90% yield. The selective formation of 5 is ascribed to a neighbouring group participation of the ortho-methoxyl group to an incipient vinyl cation.
THE ROLE OF ADDITIVES ON THE IMPROVEMENT OF THE ISOTACTICITY OF POLYPROPYLENE—A POSSIBLE INTERPRETATION
Authors: Soga Kazuo , Sano Tsuneji , Yamamoto Kazunori , Shiono Takeshi 
Published: July 2006

Abstract
Polymerization of propylene and isoprene were conducted with the catalytic systems of TiCl4/Al(C2H5)3 and TiCl4/MgCl2/Al(C2H5)3 using ethyl benzoate and 2,2,6,6-tetramethylpiperidine as Lewis bases. With increasing the concentration of these Lewis bases, the stereospecificities increased toward more isotactic and more trans-1,4-addition. The role of Lewis bases on the stereospecificities was proposed based on the result.
NEW METHOD FOR THE SYNTHESIS OF GLYCOSYL GLYCERIDES—THE STEREOSELECTIVE REDUCTION OF GLYCOSIDES OF 1-ALKOXY-3-HYDROXYACETONE—
Authors: Mukaiyama Teruaki , Tanaka Shin , Asami Masatoshi 
Published: July 2006

Abstract
Glycosides of 1-hexadecyloxy-3-hydroxyacetone are prepared from 1-halosugars and 1-O-hexadecyl-2-O-benzylglycerol. The glycosides are converted to the corresponding alcohols, precursors to the synthesis of glycosyl glycerides, by the stereoselective reduction with l-Selectride.
PREPARATION OF NEW CATION-EXCHANGERS DERIVED FROM TOYOPEARL GEL AND THEIR APPLICATION TO THE RESOLUTION OF COBALT(III) COMPLEXES
Authors: Fujita Miho , Yoshikawa Yuzo , Yamatera Hideo 
Published: July 2006

Abstract
Cation-exchangers with tartrate residues as chiral exchanging groups were newly prepared from Toyopearl gel. Short columns of these exchangers were successfully used for a highly efficient resolution of cobalt(III) complexes such as [Co(en)3]3+, [Co(tn)3]3+, and fac-[Co(β-ala)3]; complete resolutions were effected by a recycling chromatographic technique.
PREPARATION AND ELECTROCHEMICAL BEHAVIORS OF IRON(III) OCTAETHYLPORPHYRINS COORDINATED BY CATECHOL MONO ANIONS
Authors: Sugimoto Hiroshi , Ueda Nobuhiro , Mori Masayasu 
Published: July 2006

Abstract
Iron(III) octaethylporphyrin complexes coordinated by mono anions of catechol and 3,5-di-tert-butylcatechol were prepared. These Fe(III) high-spin complexes showed an irreversible one-electron redox couple for the coordinated catechol anion, in addition to two one-electron quasi-reversible FeII/FeIII, and FeIII/FeIV redox couples.
REACTIONS OF COORDINATED DINITROGEN WITH ALCOHOL/KETONE SYSTEMS
Authors: Hidai Masanobu , Yokotake Ichiro , Takahashi Tamotsu , Uchida Yasuzo 
Published: July 2006

Abstract
Treatment of cis-[W(N2)2(PMe2Ph)4] (I) with alcohol/ketone systems such as methanol/acetone at 50 °C followed by base distillation yields hydrazine as a main nitrogen hydride. Addition of KOH to the systems results in an increase of free hydrazine formation.
A TOTAL SYNTHESIS OF (±)-INTEGERRIMINE
Authors: Narasaka Koichi , Sakakura Toshiyasu , Uchimaru Tadafumi , Morimoto Kiyoshi , Mukaiyama Teruaki 
Published: July 2006

Abstract
A total synthesis of a 12-membered bislactonic pyrrolizidine alkaloid, integerrimine, has been achieved.
SYNTHESIS AND PROPERTIES OF A SERIES OF 1,2,3,4-TETRAHYDRO-1,4-ETHYLIDENEBENZOTROPYLIUM SALTS
Authors: Yamochi Hideki , Nakasuji Kazuhiro , Nakazawa Tomoo , Murata Ichiro 
Published: July 2006

Abstract
A series of tropylium ions incorporated into bicyclo[2.2.1]heptane skeleton having exo-methylene π-system, 1,2,3,4-tetrahydro-1,4-ethylidenebenzotropylium salts, has been synthesized and their charge-transfer interaction and the thermodynamic stability have been examined.
PHOTOCHEMICAL REACTION OF NAPHTHALENE WITH CIS- AND TRANS-CYCLOOCTENE
Authors: Inoue Yoshihisa , Nishida Katsuyuki , Ishibe Koichi , Hakushi Tadao , Turro Nicholas J 
Published: July 2006

Abstract
Irradiation(&gt;300 nm) of naphthalene(1, 0.1 M) and trans-cyclooctene(2t, 0.1 M) yielded the cis-isomer(2c) and three 1:1 adducts 3–5, whereas 2c(0.1 M) did not give any products under the same conditions. A singlet mechanism is proposed on the basis of Stern–Volmer studies on fluorescence, singlet lifetime, and the adduct formation.
SYNTHESIS OF THE STEROIDAL LACTONE MOIETY OF WITHANOLIDES
Authors: Hirayama Masao , Gamoh Keiji , Ikekawa Nobuo 
Published: July 2006

Abstract
A facile synthesis of the steroidal α,β-disubstituted α,β-unsaturated-δ-lactones with 22R-configuration, withanolide side-chain lactones, was described.
PREPARATION AND CHARACTERIZATION OF IRON(III) COMPLEXES OF N-METHYLOCTAETHYLPORPHYRIN
Authors: Ogoshi Hisanobu , Kitamura Satoru , Toi Hiroo , Aoyama Yasuhiro 
Published: July 2006

Abstract
Iron(III) complexes of N-methyloctaethylporphyrin, [Fe(III)-(N–CH3-OEP) (Cl)]+ X− (X = FeCl4 (1), ClO4 (2)), were prepared. The central metal of complex (2) is confirmed to be in a high-spin (S = 5/2) state on the basis of magnetic susceptibility and ESR parameters. These complexes form monopyridine adducts in solution.
A “DIP-GROWN” CdSe PHOTOANODE IN PHOTOELECTROCHEMICAL CELL
Authors: Minoura Hideki , Kobayashi Ikunori , Ueno Yasusada , Tsuiki Masayasu 
Published: July 2006

Abstract
CdSe films can be grown simply by dipping Cd metal in an SeO2-containing acid solution. These film electrodes without any additional treatment exhibit fairly good photoanodic characteristics. This enables us to fabricate a large-scale photoelectrochemical cell very easily.
A STEREOSELECTIVE SYNTHESIS OF α,β-DIHYDROXY KETONES. AN ALDOL REACTION OF ENEDIOL-TYPE CYCLIC VINYLOXYBORANES
Authors: Mukaiyama Teruaki , Yamaguchi Masahiko 
Published: July 2006

Abstract
α,β-Dihydroxy ketones are synthesized stereoselectively by the aldol reaction of 1,3,2-dioxaboroles, formed from α-hydroxy ketones and phenylboronic acid, and aldehydes.
SYNTHETIC CONTROL BY INTERNAL COORDINATION OF METAL SALTS THE INTRAMOLECULAR ENE REACTIONS OF N-(3-METHYL-2-BUTENYL)-N-(2-HYDROXYPHENYL)ACRYLAMIDES
Authors: Iwasawa Nobuharu , Takebayashi Toyonori , Mukaiyama Teruaki 
Published: July 2006

Abstract
An efficient method for acceleration of the intramolecular ene reactions is established. The magnesium salts of N-(3-methyl-2-butenyl)-N-(2-hydroxyphenyl)acrylamides afford the corresponding cyclized products in high yields with the predominant formation of δ-lactams.
NEW ANIONIC CONDUCTORS: CROWN ETHER COMPLEXES OF ALKALI-METAL IODIDES AND ALKALINE-EARTH METAL IODIDES
Authors: Fujimoto Masaharu , Nogami Takashi , Mikawa Hiroshi 
Published: July 2006

Abstract
Crown ether complexes of alkali-metal iodides or alkaline-earth metal iodides were found to be a new kind of iodide ion conductors. The more the kind of the component molecules in a complex was, the higher was the ionic conductivity. An iodine concentration cell was fabricated by using the complex as the electrolyte.
PREPARATION AND BEHAVIORS OF ENZYMES IMMOBILIZED BY POLYMER–POLYMER COMPLEXES
Authors: Osada Yoshihito , Iino Yasuhiro , Numajiri Yoko 
Published: July 2006

Abstract
Invertase was immobilized by the polymer–polymer complexes between poly(methacrylic acid) and its complementary polymers. Obtained enzymes exhibited sufficiently high activities with enhanced stabilities against enzyme-inhibitors.
THE HOFMANN REARRANGEMENT INDUCED BY ELECTROORGANIC METHOD
Authors: Shono Tatsuya , Matsumura Yoshihiro , Yamane Shin-ichiro , Kashimura Shigenori 
Published: July 2006

Abstract
The Hofmann rearrangement has been induced by the electroorganic method using potassium bromide as a mediator, of which role in the reaction is really catalytic.