bluuebunny/crossref_metadata_2025_split huggingface dataset:
DEPRESSION OF THE COMPLEX FORMATION BETWEEN ZINC TETRAPHENYLPORPHYRINTRISULFONATE (Zn-TPPS3) AND METHYLVIOLOGEN BY THE ADDITION OF SURFACTANT MICELLES
Authors: Okura Ichiro , Kita Tatsuya , Aono Shigetoshi , Kaji Naruhiko 
Published: July 2006

Abstract
Photoreduction of methylviologen was carried out by the irradiation of the system containing triethanolamine, Zn-TPPS3, and methylviologen in the presence of sodium dodecyl sulfate (SDS). The reduction rate increased with methylviologen concentration and reached a constant value which was in contrast with the result observed in the absence of SDS. The result was explained by the depression of the complex formation between Zn-TPPS3 and methylviologen which does not serve as a photosensitizer.
BIS-MYOGLOBIN RECONSTITUTED WITH COVALENTLY BONDED SYMMETRIC HEMES
Authors: Suzuki Akihiro , Okuda Katsuya , Kawagoe Keiko , Toi Hiroo , Aoyama Yasuhiro , Ogoshi Hisanobu 
Published: July 2006

Abstract
Two symmetric hemins were covalently bonded with polymethylene diamine. Reconstitution of bis-hemin with sperm whale apomyoglobin afforded bis-myoglobin(bis-Mb). Absorption spectra and paramagnetic 1H-NMR spectrum of bis-Mb were compared with monomeric myoglobin reconstituted with symmetric heme.
AMINO ACIDS FROM THE YAMATO-791198 CARBONACEOUS CHONDRITE FROM ANTARCTICA
Authors: Shimoyama Akira , Harada Kaoru , Yanai Keizo 
Published: July 2006

Abstract
The Yamato-791198 carbonaceous chondrite yielded indigenous amino acids. These consitst of various structural and optical isomers, indicating abiotic in origin. The amount of these amino acids is the largest of carbonaceous chondrites studied so far. Terrestrial organic contamination was nil to this chondrite.
PRESSURE DEPENDENCE OF THE PHOTOSTATIONARY trans/cis CONCENTRATION RATIO OF 4-DIMETHYLAMINO-4′-NITROAZOBENZENE. A NEW METHOD OF EVALUATING THE REACTION VOLUME
Authors: Tanaka Tohru , Sueishi Yoshimi , Yamamoto Shunzo , Nishimura Norio 
Published: July 2006

Abstract
A simple method of obtaining the reaction volume by means of the photostationary state method has been proposed. The reaction volume for the cis-to-trans thermal isomerization of 4-dimethylamino-4′-nitroazobenzene in some solvents was found to be well correlated to the corresponding activation volume.
SYNTHESES, CHARACTERIZATION, AND MOLECULAR STRUCTURES OF NITROALKANOATO NICKEL(II), ZINC(II), AND CADMIUM(II) COMPLEXES WITH TETRAAZACYCLOALKANES
Authors: Ito Haruko , Ito Tasuku 
Published: July 2006

Abstract
Nickel(II), zinc(II), and cadmium(II) complexes of tetraazacycloalkane (L) (L = 1,4,8,11-tetramethyl-1,4,8,11-tetraazacyclotetradecane (L1), 7RS,14RS-5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane (L2), or 1,4,8,12-tetraazacyclopentadecane (L3)) react with nitroalkanes (RR’CHNO2 : R = R′ = H; R = H, R′ = CH3; R = R′ = CH3) in the presence of NEt3 to afford the nitroalkanoato complexes, [M(L)(O2NCRR’)]+ which have been characterized by IR, 1H and 13C NMR spectroscopy, and by X-ray analyses on three compounds.
REDUCTIVE COUPLING OF BENZYL HALIDES USING NICKEL(0)-COMPLEX GENERATED IN SITU IN THE PRESENCE OF TETRAETHYLAMMONIUM IODIDE, A SIMPLE AND CONVENIENT SYNTHESIS OF BIBENZYLS
Authors: Iyoda Masahiko , Sakaitan Masahiro , Otsuka Hiroki , Oda Masaji 
Published: July 2006

Abstract
Zerovalent nickel complex generated in situ by reduction of NiBr2(PPh3)2 with zinc powder in the presence of Et4NI was found to be an effective catalyst for homo-coupling of benzyl halides. The catalytic reactions proceeded smoothly in various solvents under mild conditions to afford dehalogenative-coupling products in good to high yields.
THERMAL NEUTRON IRRADIATION EFFECT OF LITHIUM BORATE GLASSES
Authors: Nishida Tetsuaki , Takashima Yoshimasa 
Published: July 2006

Abstract
Nuclear reactions of 10B(n,α) 7Li and 6Li(n,α) 3H result in an increase in the Mössbauer absorption area of Fe2+, and the irradiation effect caused by the latter reaction proves to be remarkable when the alkali oxide (Li2O) content is low. This is ascribed to the open structure of the borate glasses where BO3 triangles are superior in numbers to BO4 tetrahedra.
THE TYPE I COPPER OF NITRITE REDUCTASE FROM ALCALIGENES SP. NCIB 11015
Authors: Sakurai Takeshi , Suzuki Shinnichiro , Nakahara Akitsugu , Masuko Masayuki , Iwasaki Hidekazu 
Published: July 2006

Abstract
Unique properties of the type I copper from Alcaliqenes sp. NCIB 11015 was characterized in detail through curve analyses of absorption and circular dichroic spectra and resonance Raman spectrum.
CRYSTAL STRUCTURE OF A NEW MOLECULAR CONDUCTOR (DBTTF)[Ni(dmit)2]
Authors: Kato Reizo , Kobayashi Hayao , Kobayashi Akiko , Sasaki Yukiyoshi 
Published: July 2006

Abstract
The crystal of (DBTTF)[Ni(dmit)2] contains uniform, segregated stacks of cations and anions. A three dimensional network of closely spaced molecules leads to intermolecular overlap integrals of the HOMO and LUMO with small anisotropy. This compound is highly conductive and signs of overlap integrals along the two segregated stacks suggest that this compound is the first two-chain system with parallel band structure.
REDUCTION OF HYDROXOCOBALT(III) SCHIFF BASE COMPLEXES WITH ALCOHOLS
Authors: Nishinaga Akira , Kondo Toshiyuki , Matsuura Teruo 
Published: July 2006

Abstract
Hydroxocobalt(III) Schiff base complexes were reduced with alcohols to the corresponding cobalt(II) species quantitatively. Kinetic studies on the reduction suggest a mechanism involving rate determining β-elimination of an alcoholatocobalt(III) complex intermediate.
THE FACTORS DOMINATING THE REVERSAL IN THE SENSE OF THE OPTICAL ROTATION OF DIARYLHEPTANOIDS IN THE SOLVENTS OF THE DIFFERENT NATURE
Authors: Suga Takayuki , Ohta Shinji , Aoki Tadashi , Hirata Toshifumi 
Published: July 2006

Abstract
Causing (s)-1,7-diphenyl-5-hydroxy-3-heptanone dextrorotatory in chloroform was attributed to the formation of the intramolecular hydrogen bond between the C-3 carbonyl and C-5 hydroxyl groups, regardless of the presence of the phenyl groups. On the other hand, causing the compound levorotatory in methanol was proved to necessitate simultaneously the breaking of the intramolecular hydrogen bond followed by the solvation to its β-ketol moiety, as well as the presence of the phenyl groups.
A FACILE, STEREOCONTROLLED ENTRY TO KEY INTERMEDIATES FOR THIENAMYCIN SYNTHESIS FROM ETHYL (S)-3-HYDROXYBUTANOATE
Authors: Chiba Toshiyuki , Nagatsuma Masako , Nakai Takeshi 
Published: July 2006

Abstract
A new synthetic approach to optically active key intermediates for thienamycin synthesis is described which involves the highly stereocontrolled transformation of the 2-azetidinone obtained via the condensation of ethyl (S)-3-hydroxybutanoate with the N-silylimine of trimethylsilylpropynal.
Pd(0)-CATALYZED ELECTRO-REDUCTIVE HYDROCOUPLING OF ARYL HALIDES WITH OLEFINS AND ACETYLENES
Authors: Torii Sigeru , Tanaka Hideo , Morisaki Kazuo 
Published: July 2006

Abstract
Electro-reductive hydrocoupling of aryl halides with olefins and acetylenes has been performed in an Et4NOTs-DMF-(Pb cathode) system in the presence of catalytic amounts of PdCl2(Ph3P)2.
A NEW METHOD FOR DIRECT OXIDATION OF THE METHYLENE GROUP ADJACENT TO A CYCLOPROPANE RING TO THE KETO GROUP
Authors: Hasegawa Takashi , Niwa Haruki , Yamada Kiyoyuki 
Published: July 2006

Abstract
A new finding that the methylene group adjacent to a cyclopropane ring can be oxidized to the keto group directly with ruthenium tetroxide is described.
NEW PALLADIUM-CATALYZED ADDITION OF CYANOTRIMETHYLSILANE TO F-ALKYLATED 1-AZA-1,3-DIENES. A CONVENIENT ROUTE TO β,γ-UNSATURATED α-F-ALKYL-α-AMINO ACID PRECURSORS
Authors: Yamasaki Yasuhiro , Maekawa Takashige , Ishihara Takashi , Ando Teiichi 
Published: July 2006

Abstract
2-F-Alkylated 1-aza-1,3-dienes, easily prepared from 1H-F-1-alkenephosphonates, smoothly underwent the addition of cyanotrimethylsilane in the presence of a catalytic amount of palladium(II) acetate or chloride to give β,γ-unsaturated α-F-alkyl-α-amino nitriles and/or γ-F-alkyl-γ-amino nitriles in good yields.
BAKER’S YEAST HYDROGENATION OF CARBONYL ACTIVATED DOUBLE BONDS. ENANTIOSELECTIVE SYNTHESIS OF THE (S)-FORM OF THE DIHYDROTERPENEDIOL SECRETED BY DANAUS CHRYSIPPUS AND OF A PHEROMONE OF CALLOSOBRUCHUS CHINENSIS L.
Authors: Gramatica Paola , Giardina Giuseppe , Speranza Giovanna , Manitto Paolo 
Published: July 2006

Abstract
The (S)-forms of (E)-3,7-dimethyl-2-octene-1,8-diol (secreted by male danaid butterflies) and of (E)-3,7-dimethyl-2-octene-1,8-dioic acid (a pheromone of the azuki bean weevil) were synthesized via stereoselective hydrogenation by baker’s yeast of the carbonyl activated double bond of achiral precursors.
TETRAKIS(METHYLTHIO)-Δ2,2′-DITHIENO[3,4-d]-1,3-DITHIOLE. A NEW TTF-TYPE DONOR
Authors: Kobayashi Keiji 
Published: July 2006

Abstract
The title compound, which is designed to increase the interstack interaction in the solid state, was synthesized as a new donor for conductive charge-transfer complexes.
HETEROGENEOUS PHOTOCATALYTIC OXIDATION OF NO2− IN AQUEOUS SUSPENSION OF VARIOUS SEMICONDUCTOR POWDERS
Authors: Hori Yoshio , Nakatsu Akiyoshi , Suzuki Shin 
Published: July 2006

Abstract
NO2− ion was shown to be oxidized to NO3− with or without O2 under illumination in aqueous suspension of some semiconductor powders. Photoactive substances were Ag2O, PbO, TiO2(anatase), Si, ZnO, SnO2, CdS, and Bi2O3. The reaction proceeded with band gap illumination of semiconductors.
SYNTHESIS AND REDOX BEHAVIOR OF [Mo(2,4,6-TRIALKYLBENZENETHIOLATO)4]. UNIQUE REDOX PROPERTIES OF TETRA-COORDINATED Mo(IV) COMPLEXES WITH BULKY THIOLATES
Authors: Ueyama Norikazu , Zaima Hiroaki , Nakamura Akira 
Published: July 2006

Abstract
Two new molybdenum(IV) complexes having bulky thiolato ligands, [Mo(2,4,6-trimethylbenzenethiolato)4] and [Mo(2,4,6-triisopropylbenzenethiolato)4], were synthesized. These complexes show paramagnetic properties due to a nearly tetrahedral coordination and exhibit the quasi-reversible redox couples of Mo(V)/Mo(IV) at −0.07 V and +0.47 V vs. SCE, respectively in 1,2-dimethoxyethane. The two bulky isopropyl groups at o-position prevent π-interaction between Mo(IV) and sulfur, providing an ionic character at the Mo–S bond and stabilizing Mo(IV) state against oxidation.
DEHYDROCYCLIZATION OF HEXANE TO BENZENE CATALYZED BY REDUCED ZIRCONIUM OXIDE TREATED WITH SULFATE, SELENATE, AND TELLURATE IONS
Authors: Hino Makoto , Arata Kazushi 
Published: July 2006

Abstract
Dehydrocyclization catalysts for paraffinic hydrocarbons were obtained by exposing Zr(OH)4 to 0.5 M H2SO4, 0.05 M H2SeO4, or 0.05 M H2TeO4 followed by calcination in air at 600–700 °C and reduction at 500–550 °C. The catalytic properties were highly dependent on metal oxides used as supports; ZrO2 was most effective. The catalyst converted hexane into benzene with selectivity up to 84%.
SYNTHESIS AND PHOTOCHROMIC BEHAVIOR OF ELASTOMERIC IONENE CONTAINING VIOLOGEN UNITS
Authors: Kohjiya Shinzo , Hashimoto Tamotsu , Yamashita Shinzo , Irie Masahiro 
Published: July 2006

Abstract
Ionene-type polymer containing viologen units was synthesized by the reaction of dicationic living poly(tetrahydrofuran) with 4,4′-bipyridine at −70 °C. This viologen polymer (PTV) was easily formed into a thin, tough, and highly elastic film. The methanol solution of PTV with ethylenediaminetetraacetic acid tetrasodium salt (EDTA) and proflavine, the N-methyl-2-pyrrolidone solution of PTV, and the thin film of PTV containing poly(N-vinyl-2-pyrrolidone) showed the photochromic property, i.e., color change by the irradiation of light.
PREPARATION AND SPECTRAL PROPERTIES OF trans- AND cis-DINITROBIS(TETRAMETHYLENEDIAMINE)COBALT(III)
Authors: Nagata Kiyonori , Kanamori Kan , Kawai Kiyoyasu , Ogino Hiroshi 
Published: July 2006

Abstract
The isomeric pair, trans- and cis-[Co(NO2)2(tmd)2]NO3, where tmd denotes tetramethylenediamine, were newly prepared. The geometrical configurations were determined on the basis of their electronic absorption spectra. The isomers show the characteristic Raman bands due to ν(CO–NH2(tmd)) which allow for the distinction of their geometrical configurations. trans-[COCI2(tmd)2]Cl was derived from the dinitro complex in a preferable yield.
A REGIO- AND STEREOSELECTIVE SYNTHESIS OF ALDOLIZED γ-DIKETONES VIA TIN(IV) BISENOLATES BY THE USE OF BIS(2-PYRIDINETHIOLATO)TIN(II)
Authors: Mukaiyama Teruaki , Ichikawa Junji , Toba Makoto , Hayashi Masaji 
Published: July 2006

Abstract
Tin(IV) bisenolates of γ-diketones, generated regioselectively from α,β-unsaturated γ-diketones by the reaction with bis(2-pyridinethiolato)tin(II), react with aldehydes stereoselectively to afford the corresponding aldolized γ-diketones in good yields.
SYNTHESIS OF 2-METHYLENETRICYCLO[4.3.2.01,5]UNDECAN-3-ONES INVOLVING A SPIRO CYCLOPROPANE RING
Authors: Kakiuchi Kiyomi , Tadaki Toshihiro , Tobe Yoshito , Odaira Yoshinobu 
Published: July 2006

Abstract
Biologically active 2-methylenetricyclo[4.3.2.01,5]undecan-3-ones involving a spiro cyclopropane ring related to quadrone have been synthesized.
OXIDATION OF α-HYDROXYKETONES WITH TRIPHENYLANTIMONY DIBROMIDE AND ITS CATALYTIC CYCLE
Authors: Akiba Kin-ya , Ohnari Hideyuki , Ohkata Katsuo 
Published: July 2006

Abstract
α-Hydroxyketones were oxidized into α-diketones with triphenylantimony dibromide in the presence of two equiv. of base. Antimony-catalyzed debromination and oxidation cycle was devised for the system of ethyl 2,3-dibromo-3-phenylpropionate and α-hydroxyketones.
A NEW REARRANGED LANOSTANOID, MARIESIIC ACID A, FROM THE SEED OF ABIES MARIESII
Authors: Hasegawa Shinichi , Miura Tadayoshi , Hirose Yoshiyuki , Iitaka Yoichi 
Published: July 2006

Abstract
An antimicrobial triterpenoic acid, named mariesiic acid A, has been isolated from the seed of Abies mariesii. The structure with a rearranged lanostane-type skeleton has been elucidated by spectral and X-ray diffraction analyses.
SYNTHESIS OF β, γ-UNSATURATE CARBOXYLIC ACID DERIVATIVES BY THE NOVEL Ni (CO)4-INDUCED RING-OPENING CARBONYLATION REACTION OF 1,1-DIBROMO-2-CHLOROCYCLOPROPANES
Authors: Hirao Toshikazu , Nagata Shinichiro , Agawa Toshio 
Published: July 2006

Abstract
1,1-Dibromo-2-chlorocyclopropanes underwent the Ni (CO)4-induced ring-opening carbonylation reaction with alcohol or amine giving the β, γ,-unsaturated carboxylic acid and dicarboxylic acid derivatives. Use of N,N-dimethyltrimethylsilylamine as an initial nucleophile in the presence of benzaldehyde led to a dienecarboxamide presumably via codensation of the nickel enolate intermediate.
REGIO AND STEREOSELECTIVE COUPLING REACTION OF GRIGNARD REAGENTS WITH β-PHENYLTHIO β,γ-UNSATURATED ALCOHOLS USING TETRACHLOROSILANE. A NEW METHOD FOR THE PREPARATION OF (Z)-ALKENYL SULFIDES
Authors: Fujiwara Tooru , Yanagihara Hiroyuki , Yamada Takafumi , Suzuki Koichi , Takeda Takeshi 
Published: July 2006

Abstract
The coupling reaction of (E)-β-phenylthio β,γ-unsaturated alcohols with Grignard reagents using tetrachlorosilane as a condensation reagent gave (Z)-SN2′ products exclusively, whereas the reaction of the corresponding Z-isomers proceeded by SN2 attack with retention of double bond geometry.
LASER-PHOTOLYSIS STUDY OF ARYL-SUBSTITUTED GERMYL ANIONS
Authors: Mochida Kunio , Wakasa Masanobu , Ishizaka Shin-ichi , Kotani Masahiro , Sakaguchi Yoshio , Hayashi Hisaharu 
Published: July 2006

Abstract
Photochemical primary processes of aryl-substituted germyl anions were studied at room temperature. The germyl radicals generated were observed directly by laser-photolysis.
AN EFFICIENT SYNTHESIS OF (2S,3R)- AND (2S,3S)-SPHINGOSINE
Authors: Obayashi Michio , Schlosser Manfred 
Published: July 2006

Abstract
A straightforward sequence of reactions allows the conversion of D(+)-Mannose and D(+)-ribono-1,4-lactone into “erythro”-(2S,3R)-and “threo”-(2S,3S)-sphingosine, respectively.
CATALYTIC BEHAVIOR OF BORIA-ALUMINA PREPARED BY CHEMICAL VAPOR DEPOSITION TECHNIQUE
Authors: Sakurai Hiroaki , Sato Satoshi , Urabe Kazuo , Izumi Yusuke 
Published: July 2006

Abstract
Catalytic behavior of boria-alumina greatly changed with B2O3 content. When B2O3≤12 wt%, both boria-aluminas (H0≥−8.2) obtained by CVD and impregnation methods showed almost the same catalytic activity, but at higher B2O3 contents (≥15 wt%, H0≥−3.0) the CVD boria-alumina exhibited higher catalytic efficiency, e.g. for the vapor-phase Beckmann rearrangement of cyclohexanone oxime.
MICROWAVE SPECTRUM AND DIPOLE MOMENT OF FLUOROALLENE
Authors: Ogata Teruhiko , Yoshikawa Mitsugu , Fujii Kazuhito 
Published: July 2006

Abstract
The microwave spectrum of H2C=C=CHF has been studied in the 40 to 45 GHz region and b-type Q-branch transitions for the ground vibrational state has been assigned. The rotational constants are A=46276.658(10) MHz, B=4300.038(3) MHz, and C=4039.161(3) MHz. The dipole moments are μa=1.55(2) D, μb=0.835(5) D, and μtotal=1.76(2) D. The molecular structure which reproduces the observed moments of inertia is calculated.
ESR AND PHOTOLUMINESCENCE EVIDENCE FOR THE PHOTOCATALYTIC FORMATION OF HYDROXYL RADICALS ON SMALL TiO2 PARTICLES
Authors: Anpo Masakazu , Shima Takahito , Kubokawa Yutaka 
Published: July 2006

Abstract
ESR and photoluminescence studies have clarified that UV irradiation of the small TiO2 particle in the presence of H2O leads to the formation of \overset•OH radicals, which are formed by trapping of photo-formed holes by the surface OH− groups.
ELECTROCHEMICAL PREPARATION OF ISOCYANIDE COMPLEXES OF LOW-VALENT PLATINUM CONTAINING A METAL–METAL BOND
Authors: Yamamoto Yasuhiro , Takahashi Katsuo , Yamazaki Hiroshi 
Published: July 2006

Abstract
The potentiostatic reduction of cis-PtCl2(RNC)2 (3a:R = 2,4-t-Bu2-6-MeC6H2; 3b: R = 2,4,6-t-Bu3C6H2; 3c: R = 2,6-Me2C6H3) were carried out on a mercury pool electrode in CH3CN. The one-electron reduction (96.5 kC/mol) of 3a and 3b gave [PtCl(RNC)2]2 (4a and 4b). An X-ray analysis of 4a showed that the two PtCl(RNC)2 planes jointed by a Pt-Pt bond were perpendicular. The two-electron reductions (2×96.5 kC/mol) of 3a and 3b gave Hg[Pt3(RNC)6]2 and Pt3(RNC)6, respectively. Electrolysis of 3c gave only Hg[Pt3(2,6-MeC6H3NC)6]2.
CRYSTAL STRUCTURE AND REFLECTION SPECTRA OF (DBTTF)2-(Cu2Br6) COMPLEX
Authors: Tanaka Masashi , Honda Masako , Katayama Chuji , Fijimoto Hitoshi , Tanaka Jiro 
Published: July 2006

Abstract
X-Ray and optical reflection measurements of (DBTTF)2-(Cu2Br6) single crystals were carried out. The single crystal of the complex consists of stacking columns of the cation molecules DBTTF +. The analysis of the reflection spectra of (DBTTF)2-(Cu2Br6) single crystals shows that the electronic structure of DBTTF+ cation system is typical of the dimer type configuration.
PHOTOCHEMICAL, THERMAL, AND CoTPP-CATALYZED DECOMPOSITION OF 2-PYRAZINONE 3,6-ENDOPEROXIDES. NOVEL SYNTHESIS OF THE UNSYMMETRICAL IMIDES
Authors: Nisho Takehiko , Nakajima Naoko , Kondo Masaji , Omote Yoshimori 
Published: July 2006

Abstract
Photochemical, thermal, and CoTPP-catalyzed decomposition of 2-pyrazinone 3,6-endoperoxides, which were readily obtained by the reaction of 2-pyrazinones with singlet oxygen, gave the unsymmetrical imides in moderate to high yields.
SELECTIVE HYDROGENATION OF ACROLEIN BY NICKEL–TITANIUM ALLOY CATALYSTS
Authors: Funakoshi Masaki , Komiyama Hiroshi , Inoue Hakuai 
Published: July 2006

Abstract
Ni28Ti72 alloy catalyst was found to have a high selectivity for the hydrogenation of acrolein to propionaldehyde. However, both the carbon-carbon double bond and the formyl group were hydrogenated by supported nickel or nickel ultra-fine particles, leading to the simultaneous production of 1-propanol together with propionaldehyde. The retardation of the formyl group hydrogenation by alloying has been suggested to be caused by the electronic effect.
SIMULTANEOUS REMOVAL OF NO AND SO2 WITH H2S OVER SOLID CATALYSTS
Authors: Iizuka Tokio , Ichikawa Tsutomu , Egashira Shinji , Tanabe Kozo 
Published: July 2006

Abstract
The reduction of NO and SO2 with H2S was examined over various metal oxide catalysts at 150–200 °C. Molybdenum oxide supported on MgO was most active for the reduction of NO and SO2 among the catalysts used. Alumina also showed considerably high activity, but the activity depended markedly on the preparation of the catalyst.
VAPOR-PHASE BECKMANN REARRANGEMENT OF CYCLOHEXANONE OXIME OVER SILICA-BORIA CATALYST PREPARED BY CHEMICAL VAPOR DEPOSITION METHOD
Authors: Sato Satoshi , Sakurai Hiroaki , Urabe Kazuo , Izumi Yusuke 
Published: July 2006

Abstract
Cyclohexanone oxime was converted to ε-caprolactam in a high yield of 93% at 250 °C over a silica-supported boron oxide catalyst which was prepared by means of chemical vapor deposition. This catalyst was much more efficient than silica-boria and alumina-boria which were obtained by the usual impregnation method.
A CONVENIENT METHOD FOR THE PREPARATION OF 6-SUBSTITUTED 7,8,9,10-TETRAHYDROPHENANTHRIDIN-7-ONES
Authors: Matsuo Keizo , Ohta Masanobu , Tanaka Kuniyoshi 
Published: July 2006

Abstract
6-Substituted 7,8,9,10-tetrahydrophenanthridin-7-one system was prepared from 3-(2-acylaminophenylthio)cyclohex-2-enones by dehydrative cyclization and concomitant sulfur extrusion with polyphosphoric acid in a single operation.
REACTION OF OXIRANES WITH DIANION OF METHYL ACETOACETATE IN THE PRESENCE OF BORON TRIFLUORIDE ETHERATE
Authors: Yamaguchi Masahiko , Hirao Ichiro 
Published: July 2006

Abstract
Oxiranes were reacted with dianion of methyl acetoacetate in the presence of boron trifluoride etherate to give the substituted tetrahydro-2-furylideneacetates, which were further converted to γ-lactones.
A NEW FLUORIDE ANION-PROMOTED 1,4-CYCLOADDITION LEADING TO SYNTHESIS OF α-TETRALONES
Authors: Aono Masahiro , Terao Yoshiyasu , Achiwa Kazuo 
Published: July 2006

Abstract
Fluoride anion-promoted 1,4-cycloaddition of methyl o-trimethylsilylmethylbenzoate to conjugated olefins was found to give α-tetralones and uncyclized Michael adducts in moderate yields.
FLOW INJECTION ANALYSIS OF α-AMINO ACIDS BY THE CHEMILUMINESCENCE METHOD
Authors: Hara Tadashi , Toriyama Motohiro , Ebuchi Takashi , Imaki Masakatsu 
Published: July 2006

Abstract
Various α-amino acids could be determined on the basis of the findings that the catalytic activity of copper(II) against the chemiluminescence between luminol and hydrogen peroxide is lowered in the presence of an α-amino acid. The detection limit of L-aspartic acid was 2.7 ng as an injecting amount.
SEQUENCE HOMOLOGY AND STRUCTURAL SIMILARITY AMONG B 870 (B 890) POLYPEPTIDES OF PURPLE PHOTOSYNTHETIC BACTERIA AND THE MODE OF BACTERIOCHLOROPHYLL BINDING
Authors: Nozawa Tsunenori , Ohta Masaru , Hatano Masahiro , Hayashi Hidenori , Shimada Keizo 
Published: July 2006

Abstract
Interspecies comparison of B 870 (B 890) bacteriochlorophyll proteins of several purple photosynthetic bacteria revealed homology in the amino acid sequences. The hydrophobic segment of the protein was predicted to span a membrane in an α-helical structure, where one histidine residue (the candidate of a BChl binding site) exists.
PREPARATION OF POLYDIACETYLENES WITH PURE ALIPHATIC SUBSTITUENTS
Authors: Kiji Jitsuo , Konishi Hisatoshi , Okano Tamon , Koyuhara Norikazu , Sakakibara Masaaki 
Published: July 2006

Abstract
Diacetylenes, R–C≡C-C≡C–R, (R =–(CH2)n–CH3, n=5,7,9), were irradiated with UV light or γ-ray, yielding red polymers, [=(R)C–C≡C–C(R)=]x, of which structure was confirmed by the Raman spectroscopy.
STEREOSELECTIVE FORMATION OF (E)-1-ALKENYL ETHERS. THE COUPLING REACTION OF 1,3- OR 3,3-DIETHOXY-1-PROPENE WITH GRIGNARD REAGENTS CATALYZED BY NICKEL–PKOSPHINE COMPLEX
Authors: Sugimura Hideyuki , Takei Hisashi 
Published: July 2006

Abstract
1,3- or 3,3-Diethoxy-1-propene reacted with Grignard reagents in the presence of nickel-phosphine complex to give (E)-1-alkenyl ethers stereoselectively.