bluuebunny/crossref_metadata_2025_split huggingface dataset:
THE EFFECT OF TRIPHENYLPHOSPHINE ON THE HYDROGENATION REACTION OF BIS(DIMETHYLGLYOXIMATO)COBALT(II)
Authors: Yamaguchi Tatsuaki , Tsumura Touru 
Published: July 2006

Abstract
The present study relates to the influence of the axial bases, especially triphenylphosphine, on the catalytic hydrogenation reaction of bis(dimethylglyoximato)cobalt(II). It was established by the kinetical study that an excess triphenylphosphine acts as a poison for this reaction by the formation of 1:2 adduct.
TRIPLET EXCITON MIGRATION IN POLY-N-VINYLCARBAZOLE AND ITS STYRENE COPOLYMERS
Authors: Yokoyama Masaaki , Nakano Takeshi , Tamamura Toshiaki , Mikawa Hiroshi 
Published: July 2006

Abstract
Delayed emission spectra of poly-N-vinylcarbazole and its styrene copolymers in a rigid glass have been measured at 77°K. New observations of delayed fluorescence and phosphorescence of poly-N-vinylcarbazole have been obtained. Delayed fluorescence due to triplet–triplet annihilation resulting from intramolecular migration of triplet excitons exhibits more sensitive dependence on the length of N-vinylcarbazole unit sequence than the kind of end groups. This fact is supported by the experiments on N-vinylcarbazole-styrene copolymers.
THE ISOLATION OF CALCIUM CIS(N)TRANS(O5)-BIS(l-ASPARTATO)COBALTATE(III).CIS(N)TRANS(O6)-BIS(l-ASPARTATO)COBALTATE(III) DECAHYDRATE
Authors: Takeuchi Mitsuaki , Matsuda Toshitsugu , Shibata Muraji , Ohnishi Isao , Saito Yoshihiko 
Published: July 2006

Abstract
The crystals of a new type bis(l-aspartato)cobaltate(III) complex have been obtained as the calcium salt. From the absorption and circular dichroism spectra of this complex salt in solution, it has been found that the calcium salt is composed of equimolar amounts of the two cis(N) geometrical isomers.
THE SYNTHESIS OF ETHYL 2-ETHOXYCARBONYL-3,5-DIOXOHEXANOATE
Authors: Kashima Choji , Mukai Nobuhiro , Tsuda Yoshihiko 
Published: July 2006

Abstract
Ethyl 2-ethoxycarbonyl-3,5-dioxoiiexanoate (1-b) was synthesized by the hydrogenolysis and hydrolysis of diethyl (3-methyl-5-isoxazolyl)malonate (3-b), which was obtained by the di-carboxylation of 3,5-dimethylisoxazole (4) with ethyl cyanoformate in the presence of butyllithium.
FORMATION OF MIXED METAL COMPLEX IN THE EXTRACTION OF COBALT AND NICKEL WITH CAPRIC ACID IN BENZENE
Authors: Nakasuka Noriyuki , Ito Takashi , Tanaka Motoharu 
Published: July 2006

Abstract
A mixed metal complex was found in the extraction of cobalt and nickel with capric acid (HR) in benzene at 25°C and ionic strength of about 0.1 M in NaClO4. The extraction equilibrium is formulated as: Co2+ + Ni2+ + 4 (HR)2,0 \ightleftharpoons (CoNiR44HR)0 + 4 H+, and log Kmix=−19.1±0.1.
INTRAMOLECULAR HYDROGEN SHIFT AS A MECHANISM FOR THE ISOMERIZATION OF 1-BUTENE OVER CALCIUM OXIDE
Authors: Tani Nobutaka , Misono Makoto , Yoneda Yukio 
Published: July 2006

Abstract
Isomerization of 1-butene-3-d1 was studied over CaO and MgSO4. Small decrease in deuterium content and little formation of d2 species, as well as the existence of 2-butene-1-d1 , show that the reaction over CaO proceeds via intramolecular 1,3 hydrogen shift. Results with MgSO4, were consistent with a carbonium ion mechanism, which involves surface proton transfer to butene.
STEREOCHEMISTRY OF ELIMINATION REACTIONS OF HALOHYDRIN DERIVATIVE AND vic-DIBROMIDE BY BUTYLLITHIUM
Authors: Sugita Toshio , Nishimoto Kazuhito , Ichikawa Katsuhiko 
Published: July 2006

Abstract
Elimination of 1-bromo-2-methoxy-1,2-diphenylethane with n-butyllithium yielded stilbene in completely stereospecific cis manner in non-polar solvents. A solvent-dependence of the stereochemistry of the elimination reaction was observed.
THE YNi4B COMPOUND IN YTTRIUM-NICKEL-BORON SYSTEM
Authors: Niihara Koichi , Katayama Yoshimasa , Yajima Seishi 
Published: July 2006

Abstract
A new-type compound, YNi4B, has been prepared by an arc-melting technique. The unit cell is hexagonal with a=4.977±0.004Å and c=6.942±0.005Å, probable space group P6/mmm, and contains two formula units. The structure consists of two units of YNi5 structure (CACu5-type), the nickel positions partly substituted for by boron atoms.
CYCLIZATION OF POLYENES IX ASYMMETRIC CYCLIZATION OF OPTICALLY ACTIVE ESTERS
Authors: Kumazawa Satoru , Kato Tadahiro , Kitahara Yoshio 
Published: July 2006

Abstract
Optically active esters of homogeranic acid (1) and its related compounds (3,4) were subjected to cyclize under various conditions and 41.5% optical yield of (2) was gained when homogeranic acid-l-menthyl ester was treated with SnCl4 at −20°.
SPECIFIC CATALYSIS BY Co(II)PHTHALOCYANINE-TETRASULFONATE IN THE SELECTIVE REDUCTION OF ACETYLENE WITH SODIUM BORONHYDRIDE
Authors: Ichikawa Masaru , Sonoda Ryoshio , Meshitsuka Shunsuke 
Published: July 2006

Abstract
Co(II)phthalocyanine-tetrasulfonate sodium exhibits a specific catalysis for the selective reduction of acetylene with NaBH4 and the electric reduction with a cathodic voltage at above −1.0 v vs “sce”.
EFFECT OF HYDROGEN-ION CONCENTRATION ON THE POLAROGRAPHIC REDUCTION OF PENTAAMMINERUTHENIUM(III) COMPLEX
Authors: Ohyoshi Akira , Hamaoka Shigenori , Hiroshima Yutaka 
Published: July 2006

Abstract
Polarographic studies have been made on a series of pentaammineruthenium(III) complexes in various acidic solutions. The reduction process was found to be a reversible one with an electron-transfer at the dropping mercury electrode. The effect of hydrogen-ion concentration was markedly observed on the half-wave potential, i.e., its value shifted to the positive side with the increase in the hydrogen-ion concentration. This can be interpreted by assuming that the protonation occurs prior to the electrode process, so the electron density of ruthenium ion decreases.
UNUSUAL GLASS FORMATION IN THE Al–Nd-O SYSTEM
Authors: Yajima Seishi , Okamura Kiyohito , Shishido Toetsu 
Published: July 2006

Abstract
A new oxide glass in the Al–Nd–O system was made through fusing by arc plasma torch and rapid quenching by a particular device although, in this system, so far it was very difficult to realize the glassy state. Quenched material of about 5mm in diameter and about 1μ in thickness was examined by polarizing microscope and by X-ray diffraction technique. The results clearly showed the existence of the glassy state.
CYCLOADDITION REACTION OF 2-PHENYL-1-AZIRINE WITH AZIRIDINES
Authors: Matsumoto Kiyoshi , Maruyama Kazuhiro 
Published: July 2006

Abstract
A 1,3-dipolar reaction of 2-phenyl-1-azirine with a variety of aziridines afforded a novel type of heterocyclic compounds in excellent yield and thus the anomalously high dipolarophilic reactivity of 1-azirine was confirmed.
PYRROLIZIDINE ALKALOIDS. THE ABSOLUTE CONFIGURATIONS OF LATIFOLIC ACID AND ITS STEREOISOMERS
Authors: Matsumoto Takashi , Okabe Tetsuaki , Fukui Kenji 
Published: July 2006

Abstract
The absolute configurations of latifolic acid (IVa) and its stereoisomers (IVb, Va, and Vb) have been elucidated. (S)(+)-3-Methoxycarbonyl-2-methyl-cis-3-pentenoic acid (VIIIa), correlated to (S)(−)-2-methyl-1,4-butanediol (XII), was converted to latifolic acid (IVa: 2S,3S,4R) and Va (2S,3R,4S). Similarly, the enantiomer (VIIb) was also converted to IVb (2R,3R,4S) and Vb (2R,3S,4R). The CD spectra of these butyrolactones were also examined.
REACTION OF N-p-TOSYLSULFILIMINE WITH TRIVALENT PHOSPHORUS COMPOUNDS
Authors: Aida Tetsuo , Furukawa Naomichi , Oae Shigeru 
Published: July 2006

Abstract
The reaction of benzyl phenyl or methyl phenyl N-p-tosylsulfilimine with trivalent phosphorus compounds in DMF gave the original sulfide. From, the kinetic study the reaction mechanism is proposed to proceed via the initial nucleophilic attack by phosphine to sulfinyl sulfur atom. Meanwhile, the addition of water to the solvent changed both the products and kinetic results.
ACYLAMINATION BY MEANS OF N-BENZYLOXYCARBONYLCARBOXAMIDES
Authors: Morimoto Hiroo , Furukawa Tadashi , Miyazima Kyoko , Mitsunobu Oyo 
Published: July 2006

Abstract
The reaction of N-benzyloxycarbonylcarboxamides with alkyl sulfonates or halides gave N-alkylated and O-alkylated products. On treatment with HBr-AcOH, the N-alkyl-N-benzyloxycarbonylcarboxamides were converted to N-alkylcarboxamides. When N-benzyloxycarbonylbenzamide was allowed to react with (S)-(−)-ethyl lactate, triphenylphosphine and diethyl azodicarboxylate, followed by treatment with HBr-AcOH, (R)-(−)-N-benzoylalanine ethyl ester was obtained with high optical purity.
POLYMERIZATION OF α-OLEFINS WITH THE SUPPORTED ZIEGLER TYPE CATALYSTS; INFLUENCE OF THE CRYSTALLINE STRUCTURE OF THE CATALYSTS ON THE ISOTACTICITY OF POLYPROPYLENE
Authors: Soga Kazuo , Akiyoshi Masahiro , Kagiya Tsutomu 
Published: July 2006

Abstract
Various transition metal compounds were supported on magnesium hydroxide and propylene polymerization was carried out by using them as catalyst. The isotacticity of polypropylene was remarkably increased in comparison with that obtained with the use of carrier free catalyst, from which it has been concluded that the stereoregulation of polymer is mainly based on the crystalline structure of the catalyst not on the transition metal compound.
INTERACTION OF HYDROGEN WITH ALKALI METAL-ADDED ACTIVE CARBON AS REVEALED BY ESR
Authors: Ishizuka Manabu , Aika Ken-ichi , Ozaki Atsumu 
Published: July 2006

Abstract
Coconut carbon adsorbed with sodium or potassium vapor gives an ESR band at g=2.004 or 2.007 which diminishes on introduction of hydrogen, and catalyzes the H2-D2 exchange reaction, whereas the coconut carbon itself gives no such ESR and the catalytic activity.
A CONVENIENT SYNTHESIS OF ISOTHIOCYANATES FROM DITHIOCARBAMATES
Authors: Fujita Hiroshi , Endo Rokuro , Murayama Keisuke 
Published: July 2006

Abstract
Reactions of N,N′-disubstituted phenylpropiolamidines with triethylammonium N-substituted dithiocarbamates at room temperature afforded corresponding β-mercaptocinnamamidines and isothiocyanates in good yields, respectively. This constitutes a convenient route to isothiocyanates from dithiocarbamates.
THE SYNTHESIS OF 4′,5,6,7- AND 4′,5,7,8-TETRAHYDROXYFLAVANONE AND THEIR COMPARISON WITH CARTHAMIDIN AND ISOCARTHAMIDIN
Authors: Obara Heitaro , Onodera Jun-ichi , Yamamoto Fumitada 
Published: July 2006

Abstract
4′,5,6,7- and 4′,5,7,8-Tetrahydroxyflavanone (II and III) have been synthesized by the isomerization of 2′ ,3′ ,4,4′,6′ -pentahydroxychalcone (I), and the structures of carthamidin and isocarthamidin were corrected by the comparison with these synthetic flavanones.
PREPARATION OF Δ4-1,2,4-THIADIAZOLINE DERIVATIVES USING N-HALOAMIDINES
Authors: Fuchigami Toshio , Odo Keijiro 
Published: July 2006

Abstract
2-lmidoyl-3-imino-5-methylthio-Δ4-1,2,4-thiadiazolines [I] were easily prepared by the reaction of N-chloroamidines [II] with potassium methyl cyanoiminodithiocarbonate [III]. By reduction, [I] was readily cleft at the N–S link and was recyclized to two kinds of s-triazines, and by alkaline hydrolysis, [I] was converted into 2-amino-4-hydroxy-s-triazine.
MODIPIZIERTE WICHTERLE REAKTION. EIN NEUER WEG ZUR SYNTHESE VON Δ2-CYCLOHEXENONEN
Authors: Kobayashi Makoto , Matsumoto Takeshi 
Published: July 2006

Abstract
In stark protonierungsfähigen organischen Reaktionsmedien wie CH3CO2H–HClO4(9:1,V/V), CH3NO2–HClO4(9:1,V/V) usw. liefert die α-(3-Chlor-2-butenyl)-ketone die Δ2 -Cyclohexenone in hohen bis mässigen Ausbeuten. Die Natur und der Anwendungsbereich dieser Cyclisierungsreaktion wurden untersucht.
ISOLATION OF PALLADIUM(II) AND PLATINUM(II) COMPLEXES OF THE S+–N− YLIDE
Authors: Matsubayashi Gen-etsu , Toriuchi Masaharu , Tanaka Toshio 
Published: July 2006

Abstract
Several new stable ylide complexes formed between palladium(II) and platinum(II) dihalides and S,S-dimethyl-N-benzoyl- or S,S-dimethyl-N-p-methylbenzoylsulfilimine were isolated and the coordination through the ylide-nitrogen atom is concluded.
SYNTHESIS OF MONO(PYRIDINE)- AND MONO(4-SUBSTITUTED PYRIDINE) OCTAETHYLPORPHYRINATOIRON(III) PERCHLORATE
Authors: Ogoshi Hisanobu , Watanabe Ei-ichi , Yoshida Zen-ichi 
Published: July 2006

Abstract
Mono(pyridine)- and mono(4-substituted pyridine)octaethylporphyrinatoiron(III) perchlorate were prepared by treatment of octaethylporphyrinatoiron(III) chloride with silver perchlorate and successive addition of pyridine and 4-substituted pyridine, respectively. The spin states of monoamine adducts were found to be in equilibrium between high (S = 5/2) and low (S = 1/2) spin states.
A NOVEL FRAGMENTATION OF RING A IN 6α-HYDROXY-7-OXOABIETA-8,11,13-TRIENE AND FORMATION OF A β-NAPHTHOL DERIVATIVE
Authors: Matsumoto Takashi , Imai Sachihiko , Masuda Hideto , Fukui Kenji 
Published: July 2006

Abstract
In order to examine the fragmentation reaction of tricyclic diterpenoids, 6α-hydroxy-7-oxoabieta-8,11,13-triene (V) was prepared from 7-oxoabieta-8,11,13-triene (XI) via an enol acetate (XII). After V was treated with p-toluenesulfonyl chloride, the product was heated at 200°C to afford a β-naphthol derivative (IX).
A FACILE SYNTHESIS OF ANOMERIC Dl-TOLYPOSAMINE
Authors: Zen Shonosuke , Kaji Eisuke , Kohno Haruo 
Published: July 2006

Abstract
Anomeric mixture (α:β = 4:3 by NMR integration) of 4-nitro-2,3,4,6-tetradeoxyhexopyranose (1) could be synthesized from acrolein and 1-nitro-2-propanol in a reasonable yield. When α- and β-anomer of 2 were hydrogenated in the presence of Raney Nickel, the respective methyl Dl-tolyposaminides were obtained; α- and β-anomer of N-benzoyl derivatives (4) of 3 were identical with the authentic samples.
PREPARATION AND MAGNETIC PROPERTY OF BaNiO3 SINGLE CRYSTALS
Authors: Takeda Yasuo , Shimada Masahiko , Kanamaru Fumikazu , Koizumi Mitsue , Yamamoto Naoichi 
Published: July 2006

Abstract
Single crystals of BaNiO3(2H) were prepared under oxygen pressure of 2000 bars. They have a hexagonal unit cell with dimensions a=5.63±0.01, c=4.81±0.01Å. The space group is P\bar62C, P63mc or P63/mmc. its magnetic susceptibility is almost temperature-independent down to 4.2K, showing BaNiO3 to be diamagnetic.
A CONVENIENT METHOD FOR THE PREPARATION OF ALLYL ETHERS—THE REACTION OF α,β-UNSATURATED ACETALS WITH GRIGNARD REAGENTS ACTIVATED BY TITANIUM TETRACHLORIDE
Authors: Mukaiyama Teruaki , Ishikawa Hiroshi 
Published: July 2006

Abstract
In the presence of TiCl4, α,β-unsaturated acetals react with Gringard reagents to give the corresponding allyl ethers in good yields.
PHOTOLYSIS OF 2,3-DIPHENYLNAPHTHOQUINONE OXIDE: TRAPPING OF A BENZ[d]OXEPINE-1,5-DIONE, A SEVEN-MEMBERED MESOIONIC SYSTEM
Authors: Kato Hiroshi , Yamaguchi Kei , Tezuka Hiroshi 
Published: July 2006

Abstract
Photolysis of 2,3-diphenylnaphthoquinone oxide resulted in carbon–carbon bond cleavage to give a seven-membered mesoionic benz[d]oxepine-1,5-dione intermediate, which was trapped by N-phenylmaleimide and norbornadiene.
PHOTOCONDUCTIVITY OF N-ETHYLCARBAZOLE SINGLE CRYSTAL INDUCED BY A Q-SWITCHED RUBY LASER
Authors: Kato Keishi , Nogami Takashi , Yokoyama Masaaki , Mikawa Hiroshi 
Published: July 2006

Abstract
The intrinsic photoconductivity of N-ethylcarbazole single crystal induced by a Q-switched ruby laser was investigated. The experimental results show that charge carriers are uniformly generated in the bulk of the crystal by the photoionization of excitons produced by two-photon absorption.
SYNTHESIS AND VALENCE ISOMERIZATION OF 7-ALKYL-7-METHOXYCARBONYLCYCLOHEPTATRIENES
Authors: Tsuruta Haruki , Mori Seiichi , Mukai Toshio 
Published: July 2006

Abstract
7-Methyl- (IV), 7-ethyl- (V) and 7-isopropyl-7-methoxycarbonylcycloheptatrienes (VI) could be easily synthesized by alkylation of cycloheptatriene-7-carboxylic acid (I), followed by methylation with diazomethane. Valence isomerization between cycloheptatriene (a-form) and norcaradiene (b-form) is observed and steric factors controlling the equilibrium are discussed.
NOVEL PREPARATION OF 1,2,4-OXADIAZOLES FROM N-BENZOYLAMIDINES
Authors: Fuchigami Toshio , Odo Keijiro 
Published: July 2006

Abstract
A new efficient procedure for the conversion of N-benzoylamidines with t-butyl hypochlorite and sodium hydroxide to 1,2,4-oxadiazoles has been devised.
ESR SPECTRA OF THE PLEIADIENE ION RADICALS
Authors: Ikegami Yusaku , Iwaizumi Masamoto , Murata Ichiro 
Published: July 2006

Abstract
Treatment of pleiadiene with concentrated sulfuric acid generated the cation radical which exhibited a strong ESR signal. The anion radical of pleiadiene was produced by the treatment with an alkali metal. Hyperfine splitting constants for both ion radicals were discussed with the MO calculations.
THE ENERGY SURFACE OF [(CH)3(CH2)]+ CATIONS
Authors: Morio Kazuhiko , Masamune Satoru 
Published: July 2006

Abstract
Potential curves calculated for the [(CH)3(CH2)]+ system show that the cyclopropenylcarbinyl, planar cyclobutenyl, and bicyclobutyl cations, are all surrounded with relatively low energy barriers, if at all, and that they would readily collapse to the most stable conformer, puckered homocyclopropenyl cation 2b.
THE SELECTIVE N,N-DIALKYLATION OF PRIMARY AMINES USING CARBONYLFERRATE
Authors: Watanabe Yoshihisa , Mitsudo Take-aki , Yamashita Masakazu , Shim Sang Chul , Takegami Yoshinobu 
Published: July 2006

Abstract
N,N-Dialkylation of primary amines was successfully carried out in the presence of carbonyl compounds and carbonylferrate.
PHOTOLYSIS OF 3-DIPHENYLHYDROXYMETHYL-4-DIPHENYLMETHYLENECYCLOBUT-2-EN-1-ONE
Authors: Toda Fumio , Todo Eishiro 
Published: July 2006

Abstract
The photolysis of the title methylenecyclobutenone (I) in benzene afforded 5,5-diphenyl-4-diphenylvinylidene-l-oxacyclopentan-2-one (III) in 82% yield, probably via alleneketene intermediate (II). The photochemical conversion of 3,4-bis(diphenylhydroxymethyl)cyclobut-3-ene-1,2-dione (V) into 4,4,8,8-tetraphenyl-3,7-dioxabicyclo[3.3.0] octane-2,6-dione (VI) in 80% yield was also described.
THERMAL REACTIONS OF ALKOXYCYCLOHEPTATRIENES AT 300–800°C
Authors: Tezuka Takahiro , Handa Koichi , Mukai Toshio 
Published: July 2006

Abstract
The thermal reactions of methoxy- and ethoxycycloheptatrienes at several temperatures from 300 to 800°C were studied. 7-Alkoxycycloheptatriene (1) isomerized to the 1-isomer (3) at 450°C in quantitative yield, and rearranged to aromatic compounds (5–8) at temperatures higher than 450°C. These findings were not consistent with the observation of Harrison et al. that the dissociation of the O–CH3 bond in la occurred at 400°C to give the hydroxytropylium radical (11).
EFFECT OF SODIUM HYDROXIDE IN THE PLATINUM-CATALYZED STEREOSELECTIVE HYDROGENATION OF ALKYL-SUBSTITUTED CYCLOHEXANONES
Authors: Sugahara Motonori , Tsuchida Shin-ichi , Anazawa Ichiro , Takagi Yuzuru , Teratani Shousuke 
Published: July 2006

Abstract
The cis/trans ratio of the products was studied for the platinum catalyzed hydrogenation of 4-methyl-, 4-isopropyl-, and 4-t-butylcyclohexanone in the presence of bases. Contrary to both the von Auwers–Skita rule and the results for platinum oxide catalyst already reported, addition of sodium hydroxide promoted the formation of cis-isomer.
A NEW PHOTOCHEMICAL CLEAVAGE OF IMINES INTO NITRILES
Authors: Ohta Hiroyuki , Tokumaru Katsumi 
Published: July 2006

Abstract
Irradiation of N-(1-phenyl-2-propylidene)-benzylamine in benzene, in contrast to the photochemically unreactive most acyclic simple imines, results in the cleavage into acetonitrile, dibenzyl, and toluene probably through the reaction of the excited state of the imine analogous to the Norrish type I cleavage of carbonyl compounds.
PIGMENT IN SILKWORM SYSTEMS AS STUDIED BY ELECTRON SPIN RESONANCE. I
Authors: Fujiwara Shizuo , Nakajima Makoto , Nakaizawa Kenji 
Published: July 2006

Abstract
It has been shown that the formation of the pigments, i.e., ommochrome and melanine, as followed by ESR can be used to investigate hibernation, fertilization and the growth in each instar period in the silkworm system.
ORGANIC COMPOUNDS IN ALUMINUM OXIDE FILMS ANODIZED IN AQUEOUS CARBOXYLIC ACIDS
Authors: Shimura Michiko , Tajima Sakae 
Published: July 2006

Abstract
Organic compounds were isolated from brown-colored aluminum oxide films anodized in aqueous carboxylic acids. The isolated compounds were identified as the carboxylic acids utilized as electrolytes. The coloration is suggested to arise from free radicals in the organic compounds.
SULFUR-CONTAINING POLYMERS. XIV. POLY(BISCARBAMOYL DISULFIDES). A NEW TYPE OF PHOTOSENSITIVE POLYMERS
Authors: Kobayashi Norio , Osawa Akiko , Fujisawa Tamotsu 
Published: July 2006

Abstract
Poly(biscarbamoyl disulfides) have been synthesized by the interfacial polycondensation of dithiobis(carbonyl chloride) with secondary diamines. The polymers obtained in good yields were of sufficiently high molecular weight to form films. The polymer films decomposed by UV irradiation with liberation of carbonyl sulfide.
STUDIES ON NUCLEOSIDES AND NUCLEOTIDES. IV. SYNTHESIS AND REACTIONS OF 3′, 5′-O-(TRIPHENYL)PHOSPHORANTYLADENOSINE
Authors: Kimura Junji , Hashimoto Yoshio , Mitsunobu Oyo 
Published: July 2006

Abstract
The reaction of adenosine with triphenylphosphine (I) and diethyl azodicarboxylate (II) in dioxane at 70°C gave 3′,5′-O-(triphenyl)phosphoranyladenosine (III). This compound was readily hydrolyzed to give adenosine and triphenylphosphine oxide (1 : 1). The reaction of III with benzoic acid in dioxane gave 5′-O-berizoyladenosine and N3, 5′-cycloadenosine. On treatment with phenyl isocyanate, III gave 5′-O-phenylcarbamoyladenosine and 5′-O-phenylcarbamoyl-N6-phenylureidoadenosine, and with diphenylketene, III gave 5′-O-diphenylacetyladenosine and N6,5′-O-bis-diphenylacetyladenosine.
3Gd2O3·5Fe2O3 GLASS OBTAINED BY RAPID QUENCHING APPARATUS USING LASER BEAM
Authors: Yajima Seishi , Okamura Kiyohito , Shishido Toetsu 
Published: July 2006

Abstract
The oxide glass of 3Gd2O3·5Fe2O3 (GIG) was prepared using the piston and anvil technique incorporated into a laser melting furnace. The quenching apparatus provides higher quenching rates than an impact quenching apparatus already made. Crystallization and magnetization of the GIG glass have been examined by means of DTA method and magnetic balance.
THE INFLUENCE OF ELECTROPHILES ON THE REGIOSELECTIVE ALKYLATION OF AMBIDENT CARBANION FROM DIHYDROTHIOPYRAN
Authors: Torii Sigeru , Tanaka Hideo , Tomotaki Yosihisa 
Published: July 2006

Abstract
The reaction of ambident carbanion derived from dihydrothiopyran (Id) with alkyl halides, epoxides, and carbonyl compounds was examined. The results demonstrate that in the cases of alkyl halides selectivity in producing 2-alkyl-Δ3-dihydrothiopyrans increases in the order, Cl&gt; Br&gt; I. On the other hand, the carbonyl compounds gave exclusively 4-alkyl-Δ2-dihydrothiopyrans in contrast to the results obtained from the epoxides.
CATIONIC HYDRIDE COMPLEXES OF NICKEL
Authors: Saito Taro 
Published: July 2006

Abstract
A series of cationic hydride complexes of nickel [NiH(L) (PCy3)2]+BPh4− (PCy3 = tricyclohexylphosphine, L = pyridines, pyrazole and imidazole) have been synthesized and characterized.
REVERSIBLE FORMATION OF ACTIVE SITES ON SULFURATED NICKEL CATALYST
Authors: Takeuchi Atsushi , Tanaka Ken-ichi , Miyahara Koshiro 
Published: July 2006

Abstract
The active sites for hydrogenation are formed on sulfurated nickel by displacing sulfur atoms with acetylene, and when acetylene is exhausted, the sites are occupied by sulfur to result in inactive. The above process is ensured with the H2–D2 equilibration reaction, and makes clear the characteristic of the partial hydrogenation of acetylene over sulfurated nickel.
THE FIRST PROOF OF THE BIOSYNTHESIS OF ISOPRENOID FROM AMINO ACID IN HIGHER PLANT. THE INCORPORATION OF l-LEUCINE INTO LINALOOL
Authors: Suga Takayuki , Hirata Toshifumi , Shishibori Tsuyoshi , Tange Keiji 
Published: July 2006

Abstract
U-14C-l-Leucine and 4,5-3H-l-leucine were incorporated into linalool (I) in Cinnamomum Camphora Sieb. var. linalooliferum Fujita in 0.004% yield at the highest value. Its labeling patterns have indicated that DMAPP may originate not only from mevalonic acid but also from leucine not via the acid.