bluuebunny/crossref_metadata_2025_split huggingface dataset:
Catalytic Properties of Perovskite-Type Mixed Oxides (ABO3) Consisting of Rare Earth and 3d Transition Metals. The Roles of the A- and B-Site Ions
Authors: Nitadori Taihei , Ichiki Tatsumi , Misono Makoto 
Published: July 2006

Abstract
The catalytic activities of perovskite-type mixed oxides (LnBO3 and Ln0.8Sr0.2CoO3, Ln=rare-earth (lanthanoid) elements, B=3d transition metals) for the oxidation of propane and methanol have been studied comparatively. It has been found that the catalytic activities of LnBO3 were principally determined by the B-site elements and were similar to those of the corresponding oxides of the B-site elements. The roles of the rare-earth ions of the A-site were secondary as long as they were trivalent. Upon the partial replacement of Ln3+ by Sr2+, the catalytic activities of LnCoO3 increased several times, the magnitude of the increase being similar among all the rare-earth ions. These results demonstrate that the kind and the valence of a B-site metal are of primary importance for the control of the catalytic activity for oxidation, almost regardless of the kind of trivalent rare-earth elements at the A-site.
The Volumes of Hydrated Glucose, Sucrose and Raffinose Molecules, and the Osmotic Pressures of These Aqueous Saccharide Solutions as Measured by the Freezing-Point-Depression Method
Authors: Kiyosawa Keitaro 
Published: July 2006

Abstract
The osmotic pressures of aqueous saccharide solutions were calculated from the data obtained by means of the freezing-point-depression method. Thus, the water activity and the osmotic pressure of d-glucose, sucrose, and raffinose solutions were measured by the freezing-point-depression method. For dilute aqueous saccharide solutions, the freezing-point depression was proportional to their molal concentrations. However, the higher the molal concentration, the larger the freezing-point depression observed became than those to be expected from the molal concentration dependent on the size of the saccharide molecules. The osmotic pressures calculated from the data of the freezing-point-depression method were compared with those measured with semi-permeable membranes by Morse and his colleagues. To obtain the apparent volumes of hydrated d-glucose, sucrose, and raffinose molecules, their partial molal volumes were measured, together with the partial molal volumes of the water of their solutions. The partial molal volumes of the water were verified to be equal to the molar volumes of pure water up to the highest concentrations examined. The apparent volumes of the hydrated d-glucose, sucrose, and raffinose molecules were calculated to be 0.1865, 0.3525, and 0.5105 nm3 respectively.
The Crystal and Molecular Structure of Aquachloro (meso-tetraphenylporphyrinato)cobalt(III)
Authors: Iimura Yasuhiro , Sakurai Tosio , Yamamoto Kiyoko 
Published: July 2006

Abstract
The crystal and molecular structure of the title compounds, [CoIIICl(tpp)(H2O)], has been determined by means of X-ray diffraction techniques. The compound crystallizes in the monoclinic system; space group P21⁄c. The unit cell has a=13.542(2), b=25.760(2), c=10.423(1) Å, β=99.33(2)°, and Z=4. The cobalt atom is coordinated by four porphyrinato nitrogen atoms, one chlorine atom, and one oxygen atom of water, and is displaced by 0.039(2) Å from the mean plane defined by the four porphyrinato nitrogen atoms towards the axial chlorine atom. The average Co–N(tpp) distance is 1.955(2) Å. The Co–Cl distance is 2.216(1), and the Co–O(water) distance, 1.979(3) Å. The porphyrinato core is significantly ruffled and has an approximate \bar4 symmetry. The [CoIIICl(tpp)(H2O)] molecules are stacked along the c axis by O–H···Cl hydrogen bonds.
The Reaction of Oxiranes with Carbon Disulfide under High Pressure
Authors: Taguchi Yoichi , Yanagiya Koshin , Shibuya Isao , Suhara Yasuo 
Published: July 2006

Abstract
The reaction of 2,2-dimetyloxirane with carbon disulfide in the presence of triethylamine was accelerated under high pressure to give 5,5-dimethyl-1,3-oxathiolane-2-thione in a high yield, while 2-hexyloxirane under the same reaction condition formeds 4-hexyl-1,3-dithiolane-2-thione (2b) as the main product and 5-hexyl-1,3-oxathiolane-2-thione (1b) as a minor product. A feasible mechanism for this formation is that 1b and 2-hexylthiirane (4b) are produced in the first stage of reaction, and that 2b is then formed by the reaction of 1b or 4b with carbon disulfide. In reactions of a variety of oxiranes with carbon disulfide, 1,3-dithiolane-2-thiones were obtained in high yields under 800 MPa at 100 °C within 20 h. Concerning the effect of substituents in oxiranes, the selectivity for product 2b is in the decreasing order; 2-phenyl-&gt;2-methyl-&gt;2-ethyl-&gt;2-hexyl-&gt;2,3-tetramethylene-&gt;2,2-dimethyl-&gt;2-(chloromethyl)-. Tertiary amines, such as N,N-dimethylethylamine, pyridine, and N-methylmorpholine, serve as good catalysts for the reaction.
The Liquid-Phase Oxidation of p-Methoxytoluene to p-Anisaldehyde with Co(OAc)2/Ce(OAc)3/Cr(OAc)3 Catalyst
Authors: Kitajima Nobumasa , Sunaga Shigeru , Moro-oka Yoshihiko , Yoshikuni Tadatsugu , Akada Mitsuo , Tomotaki Yoshihisa , Taniguchi Masatoshi 
Published: July 2006

Abstract
The liquid-phase oxidation of p-methoxy toluene to p-anisaldehyde in the presence of Co based catalysts has been studied. With Co(OAc)2 alone in acetic acid as a solvent, only a trace amount of p-anisaldehyde could be obtained; however, upon the addition of a second metal salt (e.g., Mn(OAc)2 or Ce(OAc)3) a considerable improvement in the yield (up to 60%) was observed. The synergism of Co and the second component as well as the optimization of the reaction conditions were investigated. Co(OAc)2–Ce(OAc)3–Cr(OAc)3 (3:1:2) was finally found to be the most effective catalytic system, which gave a 76% yield of p-anisaldehyde under 3 atm O2 at 110° for 3 h.
Metal Colloids Produced by Means of Gas Evaporation Technique. V. Colloidal Dispersion of Au Fine Particles to Hexane, Poor Dispersion Medium for Metal Sol
Authors: Satoh Naoki , Kimura Keisaku 
Published: July 2006

Abstract
Metal fine particles are not dispersed at all in pure solvents with a low dielectric constant, such as hexane. The gas flow-cold trap method combined with surfactants was found to be effective in stabilizing ultrafine metal particles in solvents with a low dielectric constant. Ultrafine gold particles can be stably dispersed in hexane in a colloidal state by this method. It was found that the stabilizability of the colloid depends on the ionic types of the surfactant. Thus, a cationic surfactant such as dimethyldioctadecylammonium chloride (DOAC) shows good dispersibility, whereas an anionic surfactant such as 1,2-bis(2-ethylhexyloxycarbonyl)ethanesulfonate (AOT) dose not. The optical spectra of colloid solutions suggest a difference in the local colloidal state between two types of surfactants. Colloidal solutions of a gold fine particle/DOAC/hexane system are so stable against heating or drying that the solvents are easily substituted.
Stereoselective Synthesis of Conjugated 2,4-Alkadienoates via the Palladium-Catalyzed Cross-Coupling of 1-Alkenylboronates with 3-Bromo-2-alkenoates
Authors: Yanagi Teiji , Oh-e Takayuki , Miyaura Norio , Suzuki Akira 
Published: July 2006

Abstract
(2E,4E)-, (2Z,4E)-, and (2E,4Z)-2,4-Alkadienoates can be synthesized in high yields by the cross-coupling of ethyl (E)-3-bromoacrylate, methyl (E)-3-bromo-2-methylpropenoate, ethyl (Z)-3-bromocrotonate,1-bromo-2-(ethoxycarbonyl)cyclohexene, and 4-bromocoumarin with 2-[(E)-1-alkenyl]-1,3,2-benzodioxaboroles or diisopropyl (Z)-1-hexenylboronate in the presence of 3 mol% of Pd(OAc)2, 6 mol% of PPh3, and 2 equivalents of Na2CO3 or K2CO3 in alcoholic solvents while retaining the original configuration of the double bonds in β-bromo esters and 1-alkenylboronates. Although the coupling reaction with 1-hexenylboronate with (Z)-3-bromoacrylate gave a mixture of ethyl (2Z,4E)- and (2E,4E)-nonadienoates in a ratio of 63 : 37, it was found that the use of bis(diphenylphosphino)ferrocene as a ligand of palladium brought about the stereoselective coupling under mild conditions.
DECOMPOSITION OF DITHIOCARBAMATES. IV. METHYLDITHIOCARBAMATE TO METHYLISOTHIOCYANATE IN ALKALINE SOLUTIONS
Authors: Takami Fumitaka , Wakahara Shigeru , Maeda Takashi 
Published: July 2006

Abstract
The title reaction was investigated over a range of pH 8 ∼ H− 18.2. The rate-pH profile fits with an equation kobs = k(H+)/(K + (H+)). The decomposition proceeds directly via IV but not via its conjugate base V. The rate dependence on the initial concentration of IV is also discussed.
REACTIONS OF CARBON DIOXIDE WITH TRANSITION METAL ALKOXIDES
Authors: Hidai Masanobu , Hikita Tomoji , Uchida Yasuzo 
Published: July 2006

Abstract
Alkoxides of transition metals, such as Fe, Ti, Nb, and Zr, were found to react with atmospheric carbon dioxide in benzene solution at 30°C. The measurement of CO2 volume absorbed and IR data suggest that transition metal alkoxides are partially carbonated.
LEUCOTHOL B AND C, FURTHER EXAMPLES OF ANTHRADITERPENOIDS FROM LEUCOTHOE GRAYANA MAX.
Authors: Hamanaka Nobuyuki , Miyakoshi Hidehiro , Furusaki Akio , Matsumoto Takeshi 
Published: July 2006

Abstract
The structure of leucothol B, a new diterpenoid from Leucothoe grayana Max., has been determined as 1 by X-ray crystallographic analysis. Leucothol C has been characterized as 2 by spectroscopic and chemical means.
A NOVEL SYNTHESIS OF N-CARBOXY-α-AMINO ACID ANHYDRIDE
Authors: Oya Masanao , Katakai Ryoichi , Nakai Hiroyuki , Iwakura Yoshio 
Published: July 2006

Abstract
N-Carboxy-α-amino acid anhydrides were prepared by the reaction of α-amino acids with trichloromethyl chloroformate. The yields were good to moderate, and the products obtained were as pure as those obtained by a conventional way using phosgene.
CRYSTAL STRUCTURE OF CYTIDINE-SALICYLIC ACID COMPLEX
Authors: Tamura Chihiro , Yoshikawa Masako , Sato Sadao , Hata Tadashi 
Published: July 2006

Abstract
Crystal and molecular structure of cytidine-salicylic acid complex has been determined by X-ray diffraction methods and refined by block diagonal least-squares technique to the R-index of 4.7%. Hydrogen bonds in the complex are formed between the imidine and carboxyl groups.
THE ENDOR SPECTRA OF t-BUTYLPHENYLNITROXIDE
Authors: Ishizu Kazuhiko , Nagai Hiroshi , Mukai Kazuo , Kohno Masahiro , Yamamoto Takamitsu 
Published: July 2006

Abstract
The ENDOR spectrum of t-butylphenylnitroxide were observed in either toluene or ethyl alcohol, and the solvent effects on the proton hyperfine coupling constants were investigated. Based on the Allendoerfer and Maki’s correction, the observed ENDOR intensities were compared with those calculated from the electron spin–spin relaxation time, T2.
GLASS FORMATION IN THE Ln–Al–O SYSTEM (Ln: LANTHANOID AND YTTRIUM ELEMENTS)
Authors: Yajima Seishi , Okamura Kiyohito , Shishido Toetsu 
Published: July 2006

Abstract
Oxide glasses in the Ln–Al–O system were prepared with the molar ratio of Ln2O3:Al2O3 of 10:1 to 1:10 for all the lanthanoids and yttrium by an impact quenching technique. Each quenched material was examined by polarizing microscope, X-ray diffraction and electron diffraction. The electron diffraction patterns show diffuse halos characteristic of an amorphous state.
THE STRUCTURE OF PTERIDINES FROM PHOTOBACTERIUM PHOSPHORIUM
Authors: Matsuura Sadao , Odaka Munehiko , Sugimoto Takashi , Goto Toshio 
Published: July 2006

Abstract
Three pteridines were isolated from the mycelium of Photobacterium phosphorium. One of them, photopterin-A, is a new compound and its structure was deduced as 6-(Dl-1,2-dihydroxyethyl)-8-d-ribityl-2,4,7-trioxopteridine. Other two pteridines were identified as 2 and 7 The configuration of the tetrahydroxypentyl group in those pteridines was confirmed unambiguously by comparison of their ORD spectra with those of all possible isomers synthesized.
REACTION OF BENZYNE GENERATED FROM 1-(2-CARBOXYPHENYL)-3,3-DIMETHYLTRIAZENE WITH BENZALDEHYDE AND SOME OTHER CARBONYL COMPOUNDS
Authors: Nakayama Jyuzo , Yoshida Masayuki , Simamura Osamu 
Published: July 2006

Abstract
1-(2-Carboxyphenyl)-3,3-dimethyltriazene, on being heated in benzaldehyde, affords 2-dimethylaminobenzhydrol and cis- and trans-2,4-diphenyl-1,3-benzodioxins; similar products were obtained with some other carbonyl compounds.
THE FORMATION OF ADSORBED ANION RADICAL OF DIPYRIDYL ON MAGNESIUM OXIDE AND THE ELECTRON TRANSFER TO OXYGEN MOLECULE FROM ADSORBED ANION RADICAL
Authors: Iizuka Tokio 
Published: July 2006

Abstract
The generation of 2,2′- and 4,4′-dipyridyl anion radicals by adsorption on magnesium oxide was confirmed by means of electron spin resonance and visible spectroscopies. When the adsorbed species were exposed to air, the dipyridyl anion radical faded away and the ESR spectrum which was attributed to the oxygen molecule anion radical was observed.
EFFECT OF 2-CHLOROETHANOL, DIOXANE, OR WATER ON THE CONFORMATION OF A GEL-FORMING β-1,3-d-GLUCAN IN DMSO
Authors: Ogawa Kozo , Miyagi Masanobu , Fukumoto Tsugio , Watanabe Takehiko 
Published: July 2006

Abstract
The change of viscosity, optical rotation, and flow birefringence of a gel-forming β-1,3-d-glucan in DMSO with the addition of 2-chloroethanol, dioxane, or water was studied. The results indicate a conformational transition of the glucan from a flexible disordered form to a rigid ordered structure with increasing mole fraction of these nonsolvents.
THE OXIDATION OF ACROLEIN CATALYZED BY A METAL POLYPHTHALOCYANINE
Authors: Hara Takao , Ohkatsu Yasukazu , Osa Tetsuo 
Published: July 2006

Abstract
Kinetic studies on the homogeneous liquid-phase oxidation of acrolein using a metal polyphthalocyanine as a catalyst revealed that the rate of chain initiation (Ri) can be expressed as Ri = k1(acrolein)(cat)(O2). The rate constant k1 is determined as (6.3±0.3)×10−2 M−2sec−1 at 40 °C in benzene. The result may indicate that a phthalocyanine–O2 complex abstracts the aldehyde hydrogen to initiate the oxidation.
ANTIFERROMAGNETIC RESONANCE OF ORGANIC FREE RADICAL POLYCRYSTALLINE 1,3-BISDIPHENYLENE-2-(p-CHLOROPHENYL)-ALLYL
Authors: Yamauchi Jun 
Published: July 2006

Abstract
The paramagnetic resonance of polycrystalline 1,3-bisdiphenylene-2-(p-chlorophenyl)-allyl can be observed in the temperature region above 3.25 K. Below the temperature the anomalous resonance absorptions, which may be the antiferromagnetic resonance, were observed. This may be the first experimental observation in organic free radicals.
ALKYL GROUP ISOMERIZATION IN THE REACTION OF σ-ARYL PALLADIUM COMPLEXES WITH ALKYLLITHIUM COMPOUNDS
Authors: Yamamura Masaaki , Moritani Ichiro , Murahashi Shun-Ichi 
Published: July 2006

Abstract
Reaction of di-μ-chlorobis[2-(N-phenylformimidoyl)-3-tolyl]dipalladium (1) with secondary alkylithium compounds provides evidence indicating that a secondary alkyl-palladium isomerizes to the primary via a hydrido-olefin intermediate.
THE MECHANISM OF THE OSCILLATORY DECOMPOSITION OF HYDROGEN PEROXIDE BY THE I2–IO3− COUPLE
Authors: Matsuzaki Isao , Nakajima Tsuyoshi , Liebhafsky Herman A 
Published: July 2006

Abstract
In addition to the second-order back-activatory autocatalytic process 2HIO2 + HIO + H2O2 → 3HIO2 + H2O, which was recently found to be an oscillation source for the oscillatory decomposition of H2O2, another similar autocatalytic process 2HIO + H+ + I− + H2O2 → 3HIO + H2O has been found capable of serving as an oscillation source.
PREPARATION OF THE ISOMERS OF BIS(l-METHIONINATO)COBALT(III) BROMIDE
Authors: Hidaka Jinsai , Yamada Shoichi , Shimura Yoichi 
Published: July 2006

Abstract
Bis(l-methioninato)cobalt(III) complex was prepared and separated into three isomers, and their absorption and CD curves were presented. The geometrical configurations of three isomers were assigned mainly on the basis of their absorption spectra. The pmr spectra were discussed in relation to another type of isomerism with respect to the configurations of ligand sulfur atoms after coordination.
NEW SYNTHESES OF β-ALKOXY KETONES AND β-KETO ACETALS
Authors: Mukaiyama Teruaki , Hayashi Masatoshi 
Published: July 2006

Abstract
It was found that trimethylsilyl enol ethers derived from aldehydes and ketones react smoothly with acetals or methyl orthoformate at −78°C in the presence of TiCl4, to give β-alkoxy ketones or β-keto acetals, respectively, in good yields.
CARBOXYLATION OF ACTIVE METHYLENE COMPOUNDS USING THE REAGENT OF 1,8-DIAZABICYCLO(5.4.0)-7-UNDECENE AND CARBON DIOXIDE
Authors: Haruki Eiichi , Arakawa Munekazu , Matsumura Noboru , Otsuji Yoshio , Imoto Eiji 
Published: July 2006

Abstract
Various active methylene compounds were carboxylated by employing the reagent system, 1,8-diazabicyclo(5.4.0)-7-undecene and carbon dioxide, in organic solvents or without solvent at room temperature.
OXYGEN-18 TRACER STUDY OF THE REARRANGEMENT OF O-BENZOYL-N-(p-TOLUENESULFONYL)ARYLHYDROXYLAMINES
Authors: Oae Shigeru , Sakurai Tadamitsu , Kimura Hirokazu , Kozuka Seizi 
Published: July 2006

Abstract
O-Benzoyl-N-(p-toluenesulfonyl)arylhydroxylamines (I) were found to rearrange thermally giving o-acyloxy-p-toluenesulfonanilides (II) in quantitative yields. An intramolecular concerted cyclic process has been suggested for the rearrangement on the basis of 18O tracer study. The solvent and the substituent effects on the mechanism of this novel 1,3-acyloxy migration were also examined.
STRUCTURE OF ALOENIN, A BITTER GLUCOSIDE FROM ALOE SPECIES
Authors: Suga Takayuki , Hirata Toshifumi , Tori Kazuo 
Published: July 2006

Abstract
The structure of aloenin, a bitter glucoside from Aloe species, has been reinvestigated and elucidated to be 6-(2′-β-d-glucopyranosyloxy-4′-hydroxy-6′-methyl)phenyl-4-methoxy-2-pyrone (2) by a combination of the chemical and spectroscopic methods.
HYDROGENATION OF ALKENES BY THE COMPLEX OF CROSS-LINKED POLYACRYLIC ACID WITH RHODIUM(111)
Authors: Nakamura Yoshio , Hirai Hidefumi 
Published: July 2006

Abstract
The complex of cross-linked polyacrylic acid with rhodium(111) catalyzes the heterogeneous hydrogenation of terminal and internal alkenes in polar solvents at 30°C under an atmospheric hydrogen pressure. The C=C double bonds can be hydrogenated selectively by the complex catalyst for the hydrogenation of the alkenes with carbonyl and aromatic groups.
THE MICROWAVE SPECTRA OF HALOMETHYL-METHYLETHERS
Authors: Hayashi Michiro , Kuwada Kazunori , Imaishi Hisae 
Published: July 2006

Abstract
The microwave spectra of chloromethyl- and bromomethyl-methylether in the gauche form were studied in relation to their molecular structures and quadrupole coupling constant tensors, X, for six isotopic species. The X tensor elements were obtained from the hyperfine structures of the observed spectra.
CONVERSION OF DEHYDROABIETIC ACID INTO A STEROID SKELETON: FORMATION OF THE A-RING
Authors: Harigaya Yoshihiro , Onda Masayuki , Tahara Akira 
Published: July 2006

Abstract
Conversion of dehydroabietic acid (1) to a steroid skeleton was attempted, and the synthesis of 3-oxo compound (22) was successfully completed via the intermediates (8 and 9) by two methods.
ISOMERIZATION OF 1-METHYLCYCLOHEXENE OXIDE OVER SOLID ACIDS AND BASES
Authors: Arata Kazushi , Tanabe Kozo 
Published: July 2006

Abstract
The isomerization was carried out over metal oxides, sulfates and perchlorates in toluene at 108°C, and the selectivities were found to be strikingly different. SiO2–Al2O3, solid H3PO4 and LiCIO4 formed almost 100% ketone, while TiO2 and Al2O3 gave more than 80% allyl alcohol. Only NiSO4 produced both products.
STEREOSPECIFIC COORDINATION OF SOME OPTICALLY ACTIVE TETRAMINES TO NICKEL(II) ION
Authors: Kitagawa Sadao , Murakami Tasuku , Hatano Masahiro 
Published: July 2006

Abstract
The nickel(II) complexes of optically active tetramines having two pyrrolidinyl groups in each molecules were investigated. 1,2-Bis[2(S)-2-aminomethyl-1-pyrrolidinyl]ethane and 1,2-bis[2-(S)-2-N-methylaminomethyl-1-pyrrolidinyl]ethane formed octahedral complexes, while N,N′-bis[2(S)-2-pyrrolidinylmethyl]-1,2-ethylenediamine and N,N′-bis[2(S)-2-pyrrolidinylmethyl]-1(R),2(R)-cyclohexanediamine formed square planar ones.
PREPARATION AND UV SPECTRA OF SOME OLIGOMER-COMPLEXES COMPOSED OF PLATINUM GROUP METALS AND CONJUGATED POLY-YNE SYSTEMS
Authors: Fujikura Yoshiaki , Sonogashira Kenkichi , Hagihara Nobue 
Published: July 2006

Abstract
The long straight-line oligomer complexes (1) and (2), composed of metal atoms of the platinum group and conjugated poly-yne systems, and the shorter chain members of the series, (3)∼(6), were prepared and their UV spectra were studied.
OXIDATIVE ADDITION OF 4,4,6-TRIMETHYL-1,3,2-DIOXABORINANE AND BENZO[1,3,2]DIOXABOROLE TO TRIS(TRIPHENYLPHOSPHINE)HALOGENORHODIUM
Authors: Kono Hiromichi , Ito Kazushi , Nagai Yoichiro 
Published: July 2006

Abstract
Oxidative addition of 4,4,6-trimethyl-1,3,2-dioxaborinane and benzo[1,3,2]dioxaborole to (Ph3P)3RhX, where X= Cl or Br, gives σ-metalloborne which reacts with triethylsilane to afford quantitatively Et3SiRhHX(PPh3)2.
DECOMPOSITION OF ALIPHATIC SULFIDES IN MOLTEN SALT MEDIA
Authors: Kikkawa Shoichi , Nomura Masakatsu , Sugihara Yoshito 
Published: July 2006

Abstract
The decomposition reaction of aliphatic sulfides was carried out in molten salt media employing a flow system. ZnCl2–LiCl, ZnCl2–KCl (or ZnCl2–KCl–NaCl), and ZnCl2–SnCl2 eutectics showed strong activity in decomposition of the sulfide with the predominant formation of olefin corresponding to the alkyl group of the sulfide and the fixation of sulfur as ZnS in the molten salts.
STRUCTURAL ANALYSIS IN CONTINUOUS SILICON CARBIDE FIBER OF HIGH TENSILE STRENGTH
Authors: Yajima Seishi , Okamura Kiyohito , Hayashi Josaburo 
Published: July 2006

Abstract
The starting material of a continuous silicon carbide fiber with very high tensile strength is a polycarbosilane. It begins to decompose from 300°C in vacuum and is gradually converted into a β-silicon carbide fiber by the heat-treatment at the temperature above 800°C.
AMINOALUMINUM HYDRIDE AS NEW REDUCING AGENTS. II. SELECTIVE REDUCTION OF ESTERS OF CARBOXYLIC ACIDS TO ALDEHYDES
Authors: Muraki Masayoshi , Mukaiyama Teruaki 
Published: July 2006

Abstract
It was found that esters of carboxylic acids are reduced to the corresponding aldehydes in good yields by diaminoaluminum hydrides such as bis (4-methyl-1-piperazinyl) aluminum hydride and dimorpholinoaluminum hydride at room temperature or under refluxing.
THE VAPOR-PHASE HIDROCHLORINATION OF ACETYLENE OVER METAL CHLORIDES SUPPORTED ON ACTIVATED CARBON
Authors: Shinoda Kiyonori 
Published: July 2006

Abstract
The hydrochlorination of acetylene over a series of metal chlorides supported on activated carbon was carried out at 200°C. The catalytic activity of metal chloride was correlated to the electron affinity of metal cation with two straight lines.
THE PHOTOCHEMICAL ISOMERIZATION OF THE PYRIDINE-2-ALDEHYDE 4-NITROPHENYLHYDRAZONE
Authors: Condorelli Giuseppe , Costanzo L Laura , Alicata Luigi , Giuffrida Antonino 
Published: July 2006

Abstract
syn-anti Photoisomerization of 4-nitrophenylhydrazone of pyri dine-2-aldehyde by direct and benzophenone sensitized excitation has been investigated.
For direct irradiation, the syn-isomer undergoes complete iso merization to anti ; for sensitized irradiation,a photoequilibrium state between two isomers is obtained.
Two different mechanisms are proposed.
SYNTHESIS OF AND CATALYSIS BY DEXTRAN-BOUND Mo-CYSTEINE COMPLEX
Authors: Suzuki Hisashi , Meshitsuka Shunsuke , Takashima Toshiyuki , Ichikawa Masaru 
Published: July 2006

Abstract
Cysteine was bound to the dextran polymer. The dextran-bound cysteine formed with Mo5+ a binuclear complex, which had a similar structure to free Mo-Cys complex. The dextran-bound Mo(V)-Cys complex exhibited a much higher catalytic activity for the reduction of acetylene with NaBH4 compared with the free Mo-Cys complex.