bluuebunny/crossref_metadata_2025_split huggingface dataset:
RAMAN SCATTERING STUDY OF THE PHASE TRANSITION IN TIN(II) CHLORIDE DIHYDRATE
Authors: Morisaki Hiroshi , Kiriyama Hideko , Kiriyama Ryôiti 
Published: July 2006

Abstract
The Raman spectra of SnCl2·2H2O and its deuterated analogue were measured between 110 and 300 K. Of eight peaks observed, the band at 253 cm−1 showed a drastic change in its location below Ttr, indicating the presence of a lattice mode coupled with the hydrogen ordering in the O–H··O hydrogen bonded network.
TOTAL SYNTHESIS OF A 9-DESOXY-PROSTAGLAND IN
Authors: Guzmán Angel , Crabbe Pierre 
Published: July 2006

Abstract
The unsaturated ketone (1) is reduced catalytically into the saturated keto-derivative (2) . Further transformations allow to open the bicyclic intermediate (2) into the tri-substituted cyclopentane derivative (4). This is then converted by classical methods into the 9-desoxy-prostaglandin (8).
PHOTOSENSITIZED ISOMERIZATION OF THE STILBENES WITH THE URANYL ION
Authors: Matsushima Ryoka , Sakuraba Shukichi 
Published: July 2006

Abstract
Sensitized cis→ trans and trans→cis isomerization of the stilbenes with the uranyl ion occured efficiently without reduction of the uranyl ion in deoxygenated acetone with the irradiation of λ≥365 nm, while no direct isomerization (in the absence of the uranyl ion) took place under the similar conditions. Upon a long period irradiation both the sensitized cis→trans and trans→cis isomerization gave the same isomer ratio, trans/cis = 3, which is abnormally high compared to those reported for organic triplet-sensitized isomerization. Significant oxygen-quenching was found for the sensitized isomerization, while no significant oxygen effect was observed for the quenching of the uranyl emission by the stilbenes.
THE CRYSTAL STRUCTURE OF PICOLINIC ACID
Authors: Takusagawa Fusao , Shimada Akira 
Published: July 2006

Abstract
The crystal structure of picolinic acid was determined by a three-dimensional X-ray analysis. The molecules are linked by two symmetric double minimum hydrogen bonds with a small potential barrier, N–H–N and O–H–O,and form a zig-zag chain.
SECONDARY BATTERY USING THE ION-EXCHANGE CARBON FIBER AND AN AQUEOUS SOLUTION OF NaCl
Authors: Otani Sugio 
Published: July 2006

Abstract
New secondary battery having about 2V of the electromotive force was made by placing the ion-exchange carbon cloths as a positive and a negative electrodes in an aqueous solution of NaCl. The capacity of the battery using each l6g of electrodes was 0.46 A-hr in the case of continuous discharge of 0.02 A/dm2.
SYNTHESIS OF (±) -14-HYDROXY-12-ISOPROPYL-3-OXOPODOCARPA-1,8,11,13- AND (±)-14-HYDROXY-12-ISOPROPYL-1-OXOPODOCARPA-2,8,11,13–TETRAENES, AND (±)-12-HYDROXY-1-OXOTOTARA-2,8,11,13-TETRAENE
Authors: Matsumoto Takashi , Ohno Toru , Fujita Hitoshi , Fukui Kenji 
Published: July 2006

Abstract
For structural elucidation of shonanol, (±)-14-hydroxy-12-isopropyl-3-oxopodocarpa-1,8,11,13-tetraene (II), (±)-14-hydroxy-12-isopropyl-1-oxopodocarpa-2,8,11,13-tetraene (III), and (±)-12-hydroxy-1-oxototara-2,8,11,13-tetraene (IV) were synthesized. However, the synthetic II-IV were shown to be not identical with shonanol.
PHOTOCHEMICAL REACTION OF THE p-BENZOQUlNONES IN MICELLAR SYSTEM
Authors: Kano Koji , Matsuo Taku 
Published: July 2006

Abstract
The photochemical reaction of p-benzoquinone and duroquinone in the presence of the surfactants has been investigated in aerobic phosphate buffer (pH 6.8). The photoreaction of p-benzoquinone was accelerated by the addition of sodium laurate (Φ/Φ0 = 1.6) and sodium lauryl sulfate (Φ/Φ0 = 1.4). Polysorbate 80 did not affect (Φ/Φ0 = 1.0) and hexadecylethyldimethylammonium bromide markedly suppressed the photoreaction of p-benzoquinone (Φ/Φ0 = 0.56). Meanwhile, the photoreaction of duroquinone was slightly suppressed by the anionic and non-ionic surfactants and was completely inhibited by the cationic one. The acceleration of the photoreaction of p-benzoquinone by the anionic surfactants was ascribed to the formation of the p-benzoquinone–micelle complex as confirmed by means of NMR spectroscopy. The results of the micellar effects on p-benzoquinone photochemistry suggest the formation of a cationic species as an intermediate.
BEHAVIOR OF α-METHOXYCYCLOPROPYL RADICAL IN HUNSDIECKER REACTION
Authors: Ando Teiichi , Yamashita Akira , Matsumoto Masahiro , Ishihara Takashi , Yamanaka Hiroki 
Published: July 2006

Abstract
The Hunsdiecker reaction of trans-1-methoxy-2-methyl-3, 3-dichlorocyclopropanecarboxylic acid with bromine in carbon tetrachloride at 0°C and 77°C has been found to occur with substantial inversion of configuration, suggesting the low configurational stability of the α-methoxycyclopropyl radical as compared with the α-methoxyvinyl radical.
HYDROGEN BONDING OF PYRIDINE-CARBOXYLIC ACIDS IN SOLIDS
Authors: Takusagawa Fusao , Shimada Akira , Nishimoto Kichisuke 
Published: July 2006

Abstract
The nature of the hydrogen bonds in pyridine-carboxylic acids is studied theoretically. There is an interesting relationship between O···N and N···H distances in the systems. The relation can be reasonably explained by the consideration of the charge transfer interactions. The variation of the C–N–C bond angle of pyridine ring by a protonation can also be satisfactorily elucidated by INDO method.
ENHANCEMENT BY WATER OF THE ACTIVITY OF σ-ARYL PALLADIUMII) CATALYST FOR CODIMERIZATION OF ETHYLENE WITH STYRENE
Authors: Nozima Haruki , Kawata Noboru , Nakamura Yoshiyuki , Maruya Ken-ichi , Mizoroki Tsutomu , Ozaki Atsuma 
Published: July 2006

Abstract
A catalytic amount of water has been found to increase significantly the activity of the catalyst system composed of bis(triphenylphosphine) σ-aryl(halo)palladium(II) and trifluoro boron etherate for the codimerization of ethylene with styrene to give 3-phenyl-1-butene.
A NOVEL NICKEL CATALYST SUPPORTED ON POLYSTYRENE WITH NICKEL–CARBON σ-BOND
Authors: Kawata Noboru , Mizoroki Tsutomu , Ozaki Atsumu , Ohkawara Makoto 
Published: July 2006

Abstract
Nickel complexes bound to polystyrene with nickel-carbon σ-bond were prepared by oxidative addition of halogenated polystyrene to tetrakis(triphenylphosphine)nickel(0). The nickel complex, suspended in toluene solution, exhibits nearly the same activity for ethylene dimerization as that of bis(triphenylphosphine)σ-phenyl(bromo)nickel(II).
SYNTHESES OF 8-CYCLOHEPTATRIENYLHEPTAFULVENYLIUM ION AND ITS 8-METHYL DERIVATIVE
Authors: Kayama Yasutaka , Oda Masaji , Kitahara Yoshio 
Published: July 2006

Abstract
8-Cycloheptatrienylheptafulvenylium ion 2 and its 8-methyl derivative 3 are synthesized. The PKR+ value of 2 is 7.49±0.05, the largest value so far known for hydrocarbon cations. The PKR+ value of 3 is 5.89±0.05.
ISOLATION AND PROPERTIES OF 6,6-DIMETHYLFULVENE 1,4-EPIDIOXIDE
Authors: Harada Nobuyuki , Uda Hisashi , Ueno Hiroshi , Utsumi Shun-ichi 
Published: July 2006

Abstract
The 1,4-epidioxide 1 of 6,6-dimethylfulvene has been isolated and characterized when the sensitized photooxidation of dimethylfulvene was conducted in a concentrated methanolic solution at low temperature, and the thermal isomerizations of 1 to all of the photooxidation products of dimethylfulvene reported previously have been demonstrated.
ACTIVATION OF ACYL GROUPS BY OXADIAZOLINE DERIVATIVES
Authors: Fukuda Hiroyuki , Endo Takeshi , Okawara Makoto 
Published: July 2006

Abstract
New acylation reagents, 4-acetyl-2-phenyl-1,3,4-oxa(thia)diazolin-5-ones(thiones) (IIa-IId), were prepared. The kinetic studies of aminolyses of them show that the acetyl derivatives are 102–107 times as reactive as p-nitrophenyl acetate in the reaction with cyclohexylamine.
CONSPICUOUS EFFECTS DUE TO COMPLEX FORMATION AND CONTACT TERM UPON LANTHANIDE-INDUCED SHIFTS IN 19F NMR OF SOME FLUOROAROMATIC COMPOUNDS
Authors: Ajisaka Katsumi , Kainosho Masatsune , Shigemoto Hiroko , Tori Kazuo , Wolkowski Z W , Yoshimura Yohko 
Published: July 2006

Abstract
Effects of lanthanide shift reagents, Ln(fod)3 and Ln(dpm)3, upon 19F and 1H NMR spectra of 4-fluoroaniline and 2-fluoropyridine have been studied to show that the effects originating from complex formation as well as those due to the contact term upon the induced shifts are sometimes too large to be neglected.
A CONVENIENT METHOD FOR THE SYNTHESES OF BENZYL N-ALKYLCYANOCARBAMATES AND N-MONOALKYLISOTHIOUREAS
Authors: Taguchi Takeo , Sato Yoshinari , Mukaiyama Teruaki 
Published: July 2006

Abstract
A convenient method for the syntheses of benzyl N-alkylcyanocarbamates [III] and N-monoalkylisothioureas [V] have been established. Benzyl N-alkylcyanocarbamates [III] were obtained in high yields by the reactions of the potassium salt of benzyl cyanocarbamate with various alkyl halides. Further, it was found that N-alkyl-S-ethylisothioureas or N-alkyl-S-phenylisothioureas [V] were obtained in good yields by the treatment of the benzyl N-alkylcyanocarbamates [III] thus obtained with ethanethiol or benzenethiol.
THERMAL DECOMPOSITION REACTION OF HALOGENOPENTAAMMINERUTHENIUM(III) COMPLEXES
Authors: Ohyoshi Akira , Hiraki Shunichi , Kawasaki Hideo 
Published: July 2006

Abstract
The thermal decomposition reaction of halogenopentaammineruthenium(III) complexes was studied by the techniques of thermogravimetry, differential thermal analysis and evolved gas analysis. The complexes were dissociated by two different mechanisms:(a) those in which the Ru(III) was reduced by halide ion; and (b) those in which the Ru(III) was reduced by ammonia molecule. Which mechanism is preferably selected for a thermal decomposition reaction, it seems to be determined by the composition of ligands in the complexes.
CARBON-13 NUCLEAR MAGNETIC RESONANCE SPECTRA OF CYCLODEXTRINS AND ITS PERACETATES
Authors: Takeo Ken’ichi , Hirose Kenji , Kuge Takashi 
Published: July 2006

Abstract
Carbon-13 chemical shifts for α-, β-, and γ-cyclodextrins and its peracetates, and also amylose, in several solvents, are reported with full assignment. It was found that the steric effects imposed by cyclic nature of the dextrins on the conformation of the glucopyranose residues in the dextrins are clearly reflected in their spectra.
A NOVEL DEOXYGENATION OF THIOLSULFONATES AND SULFOXIDES WITH REDUCED IRON
Authors: Fujisawa Tamotsu , Sugimoto Kikuo , Ohta Hiromichi 
Published: July 2006

Abstract
Reduced iron is a very effective reagent for deoxygenation of various thiolsulfonates and sulfoxides to give the corresponding disulfides and sulfides, respectively.
α-ELIMINATION OF N,N-DICHLOROMETHANESULFONAMIDE IN THE PRESENCE OF COPPER
Authors: Shingaki Tadao , Torimoto Noboru , Inagaki Masao , Nagai Toshikazu 
Published: July 2006

Abstract
It was found that N,N-dichloromethanesulfonamide (I) reacted with cyclic ethers and hydrocarbons in the presence of copper to give the N-substituted methanesulfonamides (II) and methanesulfonamide. The non-stereospecific formation of II in the reaction of I with trans- and cis-1,4-dimethylcyclohexanes, contrary to the stereospecific formation of II in the reaction of methanesulfonyl azide with the hydrocarbons, gives a support to a radical mechanism.
MASS SPECTRAL ANALYSIS OF THERMALLY DESORBED GASES FROM DIAMOND SURFACES
Authors: Matsumoto Seiichiro , Sato Yoichiro , Setaka Nobuo , Goto Masaru 
Published: July 2006

Abstract
Mass spectral analysis was made of gases thermally desorbed from oxidized and hydrogenated surfaces of diamond up to 960°C. The chemisorbed oxygen desorbs as CO and CO2, while hydrogen as H2. The desorption in the form of CO occurs at least in two steps.
ALKYL SUBSTITUENT EFFECTS ON C-13 NMR PARAMETERS FOR TRICHLORO-PLATINUM(II)-OLEFIN COMPLEXES AND β-METHOXYALKYLMERCURIC CHLORIDES
Authors: Ibusuki Takashi , Saito Yasukazu 
Published: July 2006

Abstract
C-13 nmr parameters for a series of Pt(II)-olefin complexes and β-methoxyalkylmercuric chlorides are reported and discussed in terms of alkyl substituent effects on the direct metal–carbon couplings and others in order to clarify the property of Pt–C bonding by comparing with Hg–C bonding.
THE NUCLEAR MAGNETIC RESONANCE STUDY OF EXCHANGING SYSTEMS. III. COPE REARRANGEMENT OF CYCLOOCTATETRAENE DIMER BY 13C NMR TOTAL LINE SHAPE ANALYSIS
Authors: Nakanishi Hiroshi , Yamamoto Osamu 
Published: July 2006

Abstract
13C NMR spectra of cyclooctatetraene dimer (III) were measured at various temperatures. The complete line shape analysis of temperature dependent spectra was made using the modified Bloch equation method. The activation parameters of the degenerate Cope rearrangement were obtained and were compared with the results obtained by the conventional coalescence temperature method.
MECHANISM OF CHARGE-TRANSFER POLYMERIZATION: PHOTOSENSITIZED CHARGE-TRANSFER COPOLYMERIZATIONS OF N-VINYLINDOLE WITH ELECTRON-ACCEPTING MONOMERS
Authors: Oshiro Yasuo , Shirota Yasuhiko , Mikawa Hiroshi 
Published: July 2006

Abstract
It was found for the first time that N-vinylindole was copolymerized with such electron-accepting monomers as fumaronitrile or diethyl fumarate to yield 1:1 alternating copolymers by photopoirradiation. The initiation process of the photolymerization was suggested to involve the charge-transfer or probably electron transfer from N-vinylindole to the electron-accepting monomer in the electronically excited state.
STRUCTURE AND REACTIVITY OF ORGANIC IONS IN GAS-PHASE RADIOLYSIS. IV. THE C7H7+ ION FROM CYCLOHEPTATRIENE
Authors: Takamuku Setsuo , Nakamura Katsuyoshi , Nagaoka Kenji , Sakurai Hiroshi 
Published: July 2006

Abstract
The structure of the C7H7+ ion formed by γ radiolysis of cycloheptatriene vapor has been investigated by an ion-trapping with toluene-d8 or dimethylamine. The C7H7+ ion was shown to be mainly a rearranged benzyl type while a tropylium ion was also trapped with dimethylamine in a low yield.
SYNTHESIS OF LANTHANOID ALUMINATES (β-Al2O3 TYPE) USING ARC PLASMA FLAME
Authors: Yajima Seishi , Okamura Kiyohito , Shishido Toetsu 
Published: July 2006

Abstract
New compounds with approximate formulas, La2O2·7Al2O3, Pr2O3·7Al2O3, Nd2·8Al2O3 and Sm2O3·7Al2O3, have been obtained through melting by arc plasma flame and separated into their own single phases by a proper chemical treatment. All of the compounds have the β-Al2O3 type structure. Excepting only La2O3·7Al2O3, these compounds have the β-Al2O3, type structure at temperatures higher than 1500°C.
THE RELATION BETWEEN ORD-CURVES OF β-AMINO ACIDS AND THEIR CONFIGURATIONS
Authors: Seto Yasuhiko , Yamada Takashi , Niwa Koichi , Miwa Shugo , Tanaka Fumio , Kuwata Shigeru , Watanabe Hiroshi 
Published: July 2006

Abstract
It was found that ORD-curves of N-dithiocarbamates of β-amino acids are not always suitable for the assigning of the configuration of β-amino acid. For this purpose it will be better to examine the effect of pH on the curve of β-amino acid itself measured in aqueous medium at a range of 250–350 nm; the value of the molecular rotation of l-β-amino acid at various pH is in the following order: neutral&gt;acidic&gt;alkaline.
EINE NEUE METHODE ZUR SYNTHESE VON TRIAZIN-DERIVATEN AUS AMINOSÄUREN: AKTIVIERUNG DER CARBOXYLGRUPPE MIT DICYCLOHEXYLCARBODIIMID UNTER ZUSATZ VON 3-HYDROXY-5-METHYLISOXAZOL
Authors: Maekawa Kazuyuki , Kuwano Eiichi 
Published: July 2006

Abstract
Das Carboxyl-Ende von Aminosäuren wurde mit 3-Hydroxy-5-methylisoxazol verknüpft, dann liess sich mit Biguanid unter milden Bedingungen versetzen, um den Triazin-Ring zu schliessen.
CHEMISTRY OF NITROSOIMINSS. IV. REACTIONS OF 3-SUBSTITUTED 2-NITROSOIMINO-2,3-DIHYDROBENZOTHIAZOLES WITH GRIGNARD REAGENTS
Authors: Akiba Kin-ya , Kawamura Takayuki , Hisaoka Motoyuki , Inamoto Naoki 
Published: July 2006

Abstract
Reactions of 3-substituted 2-nitrosoimino-2,3-dihydrobenzothiazoles (I) with Grignard reagents gave three kinds of major products depending on the structure of Grignard reagents: the corresponding 2,2-diaryl compounds with arylmagnesium bromides by extrusion of nitrosoimino group, 2-monosubstituted compounds with bulky Grignard reagents, and 2-benzylidenehydrazono derivative with benzylmagnesium chloride, respectively.
KINETIC STUDY OF A COMPLEX FORMATION FROM 1,3,5-TRINITROBENZENE AND SODIUM SULFITE
Authors: Sasaki Muneo 
Published: July 2006

Abstract
A kinetic study on the formation of a σ-complex from 1,3,5-trinitrobenzene (TNB) and sodium sulfite in aqueous solution was carried out in the temperature range, 10.0–30.0°C by the stopped-flow method. The kinetic and thermodynamic parameters were considered in comparison with those of the σ-complex from TNB and hydroxide ion.
REACTIVITIES OF SUBSTITUTED PHENYL RADICALS
Authors: Takayama Kiyoshige , Kosugi Masanori , Migita Toshihiko 
Published: July 2006

Abstract
Relative reactivities of substituted phenyl radicals in chlorine abstraction from carbon tetrachloride were estimated by carrying out competitive reactions of the radicals with carbon tetrachloride and iodine. Negative substituents on the radicals were found to retard the reactivities of chlorine abstraction.
NITRATION OF DEHYDROABIETIC ACID DERIVATIVES
Authors: Ohtsuka Yasuo , Akita Hiroyuki , Tahara Akira 
Published: July 2006

Abstract
Nitration of various dehydroabietic acid derivatives was examined and it was found that nitration was affected by the structure. An interesting substitution occurred at 11,13 (deisopropylation) and 14 positions.
THE CRYSTAL STRUCTURE OF p-HYDROXYBENZALDEHYDE
Authors: Iwasaki Fujiko , Sato Masahiro , Aihara Ariyuki 
Published: July 2006

Abstract
The crystal structure of p-hydroxybenzaldehyde was determined by a three-dimensional X-ray analysis. The molecules are linked by the O–H···O=C intermolecular hydrogen bond between hydroxyl and aldehydic groups parallel to the a axis, forming a zig-zag chain elongated along the b axis. The distance of the hydrogen bond, O···O, is 2.67 Å.
RECOMBINATION REACTION BETWEEN INDIUM AND CHLORINE IN AIR-ACETYLENE FLAME OBSERVED BY MOLECULAR FLAME ABSORPTION SPECTROSCOPY
Authors: Haraguchi Hiroki , Shiraishi Minoru , Fuwa Keiichiro 
Published: July 2006

Abstract
When a solution of indium dissolved in HClO4 was aspirated into an air-acetylene flame, molecular absorption spectrum of InCl in the flame was observed by molecular flame absorption spectroscopy. This indicates that the recombination reaction between indium and chlorine occurs in the flame, following the thermal decomposition of HClO4.
MEBADONIN, A NEW ENT-KAURANE DITERPENOID FROM ISODON KAMEBA OKUYAMA
Authors: Hirotsu Ken , Kamikawa Tadao , Kubota Takashi , Shimada Akira , Isobe Takahiko 
Published: July 2006

Abstract
Mebadonin was isolated from Isodon Kameba Okuyama and the crystal and molecular structure were determined by means of X-ray analysis.
ASYMMETRIC HYDROGENATION OF OLEFINIC COMPOUNDS CATALYZED BY BIS(DIMETHYLGLYOXIMATO)COBALT(II)-OPTICALLY ACTIVE AMINE COMPLEX
Authors: Takeuchi Seiji , Ohgo Yoshiaki , Yoshimura Juji 
Published: July 2006

Abstract
Bis(dimethylglyoximato)cobalt(II)-quinine complex catalyzed asymmetric hydrogenation of oleflnic compounds to afford optically active carboxylic acid and amino acid esters. α-Phenylacrylophenone gave higher optical yield (ca. 50%) than α,β-unsaturated esters (7–20%).
THE X-RAY DETERMINATION OF THE CONFORMATIONS OF 2,7-DIMETHYL- AND 2,7-DIPHENYL-4,5-BENZOTROPONE
Authors: Ibata Koichi , Shimanouchi Hirotaka , Sasada Yoshio 
Published: July 2006

Abstract
The crystal structures of the title compounds were determined by X-ray analysis. In spite of overcrowding of the carbonyl oxygen atom and the substituents, the seven-membered rings are nearly planar. There is observed bond alternation in the seven-membered ring, especially the significant elongation of the single bonds neighboring to the carbonyl.
DETERMINATION OF FREE PHENOL IN PHENOL RESOLE RESIN BY GEL PERMEATION CHROMATOGRAPHY
Authors: Tsuge Morio , Miyabayashi Tatsuya , Tanaka Shigeyuki 
Published: July 2006

Abstract
The free phenol in phenol resole resin was determined by gel permeation chromatography with the high molecular polystyrene as the internal standard. The observed values were in close agreement with that obtained by gas chromatography. The reproducibility was about 4 per cent as the coefficient of variance.
PHOTOCHEMICAL REACTION OF 9,10-PHENANTHRAQUINONE WITH GLYOXALS
Authors: Maruyama Kazuhiro , Takahashi Gensho 
Published: July 2006

Abstract
A novel type of photochemical reaction between 9,10-phenanthraquinone and glyoxal was discovered and extended to several glyoxals, i,e., methyl-, ethyl-, n-propyl-, i-propyl-, t-butyl-, cyclohexyl-, and phenyl-glyoxals. In these reactions, monoesters of 9,10-dihydroxyphenanthrene could be obtained accompanying with the vigorous evolution of carbon monoxide. The dynamic aspect of these photochemical reactions was investigated using CIDNP technique, and the reverse hydrogen abstraction reaction between two radical species which were resulted from glyoxal and photoexcited 9,10-phenanthraquinone was found to occur.
ACIDIC AND BASIC PROPERTIES OF P2O5–CaO MIXED OXIDES
Authors: Tada Akio , Yoshida Masatoshi 
Published: July 2006

Abstract
P2O5–CaO was prepared and its acidic and basic properties were studied. It was found that P2O5–CaO (0.1 ≤P2O5/CaO ≤ 0.6) had both acidic and basic properties. The maximum strength Ho of acid site and that of base site for P2O5–CaO (mole ratio : 0.2) were 1.5 and 17.2 respectively.
THE CYCLOADDITION REACTION OF ISOBENZOFURAN WITH SOME TROPONES
Authors: Takeshita Hitoshi , Wada Yasuo , Mori Akira , Hatsui Toshihide 
Published: July 2006

Abstract
Isobenzofuran, generated by two different methods, was taken to the reaction with tropone, 2-methoxytropone,and 2-chlorotropone. The [6+4]-adducts were obtained from these three tropones examined, but the [2+4]-adducts were obtained from the former two. The structures of the adducts have been deduced on the basis of the spectroscopic methods of analyses.
POTENTIAL-SWEEP STUDY FOR HYDROGEN ELECTRODE REACTION ON MERCURY
Authors: Katayama Akiko , Kita Hideaki 
Published: July 2006

Abstract
The potential-sweep method was applied to mercury cathode in HCl, HBr, and HI aqueous solutions. Resulting current-potential curves for the hydrogen evolution reaction revealed a plateau, i.e., an almost constant current in the potential region from −0.65 to −1.0 V vs. N.H.E. which is the characteristic behaviour expected from the theoretical non-steady state analysis for the electrochemical mechanism. Effects of the sweep rate and anion are briefly discussed.
THE NATURE OF ACID SITES ON SILICA-ALUMINA AND ALUMINA CATALYSTS
Authors: Tomida Minoru , Tanaka Masako , Iwasawa Yasuhiro , Ogasawara Sadao 
Published: July 2006

Abstract
Acid sites of SiO2–Al2O3 and Al2O3 were investigated by the thermal desorption of n-butylamine. SiO2–Al2O3 gave n-butylamine and n-butene as desorbed components, while dibutylamine and n-butene were formed on Al2O3. The differences in desorption behavior could be explained by the different assembly of the sites on these catalysts.
REDUCTION WITH TRICHLOROSILANE. VI. DESULFURATION OF PHOSPHINE SULFIDES AND PHOSPHOROTHIONATE WITH TRICHLOROSILANE
Authors: Nakao Ren , Fukumoto Tsugio , Tsurugi Jitsuo 
Published: July 2006

Abstract
It was found that trisubstituted phosphine sulfides and triphenyl phosphorothionate were reduced to the phosphines and triphenyl phosphite with trichlorosilane under γ irradiation.
SELECTIVE HYDROGENATION OF α,β-UNSATURATED CARBONYL AND NITRILE COMPOUNDS BY MEANS OF CARBON MONOXIDE AND WATER IN THE PRESENCE OF RHODIUM CARBONYL COMPLEX
Authors: Kitamura Takanori , Sakamoto Noritoshi , Joh Takashi 
Published: July 2006

Abstract
α,β-Unsaturated carbonyl and nitrile compounds are hydrogenated selectively by means of carbon monoxide and water in the presence of a catalytic amount of rhodium carbonyl complex.