bluuebunny/crossref_metadata_2025_split huggingface dataset:
ASYMMETRIC SYNTHESIS OF β-SUBSTITUTED γ-BUTYROLACTONES
Authors: Mukaiyama Teruaki , Fujimoto Katsumi , Hirose Takuji , Takeda Takeshi 
Published: July 2006

Abstract
Highly optically pure β-substituted γ-butyrolactones (V) were obtained in good yields by the reaction of (E)-(2R,3S)-6-alkylidene-3,4-dimethyl-2-phenylperhydro-1,4-oxazepine-5,7-dione (I) with phenylthiomethyllithium, followed by i) treatment with trimethyloxonium tetrafluoroborate and ii) acid hydrolysis.
REACTIONS OF LIGATING DINITROGEN WITH ALCOHOLS OR METAL HYDRIDES
Authors: Hidai asanobu , Takahashi Tamotsu , Yokotake Ichiro , Uchida Yasuzo 
Published: July 2006

Abstract
Treatment of cis-[W(N2)2(PMe2Ph)4] with 2-propanol/KOH yields hydrazine, whereas use of n-alcohols instead of 2-propanol gives ammonia as a main nitrogen hydride. Metal hydrides such as [(η5-C5H5)2ZrHCl], [H2Fe(CO)4] and [NaAlH2(OCH2CH2OCH3)2] also react with the above dinitrogen complex to give ammonia in moderate yield.
SYNTHESIS OF OXAZOLO- AND IMIDAZOLO-PHANES
Authors: Beccalli Egle M , Majori Luisella , Marchesini Alessandro , Torricelli Clara 
Published: July 2006

Abstract
Irradiation of (3, 5)[9]isoxazolophanes (I) afforded the corresponding azabicyclo [1O.1.O]tridec-13(1)-en-11-ones (II) from which the [9]oxazolo- (III) and the [9]imidazolo-phanes (V) were obtained.
REACTION OF SULFENAMIDES WITH DI-ALKYL AND TRIALKYL PHOSPHITES.AN EFFICIENT SYNTHESIS OF PHOSPHORAMIDATES BY UNUSUAL SUBSTITUTION AT S–N BOND IN (2-BENZOTHIAZOLYL)SULFENAMIDES
Authors: Torii Sigeru , Sayo Noboru , Tanaka Hideo 
Published: July 2006

Abstract
Regioselective attack of the trivalent phosphorus atom of dialkyl and trialkyl phosphites on either nitrogen or sulfur atom of sulfenamides has been found. The reaction of phenylsulfenamides with dialkyl phosphites yielded phosphorothiolates, whereas the treatment of (2-benzothiazolyl)sulfenamides with dialkyl and trialkyl phosphites gave phosphoramidates in excellent yields.
FERMI RESONANCE BETWEEN METHYL TORSIONAL AND SKELETAL BENDING EXCITED STATES OF ETHYL FLUORIDE BY MICROWAVE SPECTRA
Authors: Shiki Yoshiko , Yamaoka Fujiko , Hayashi Michiro 
Published: July 2006

Abstract
Microwave spectra of ethyl fluoride and its deuterated species were measured in the ground, methyl torsional and skeletal bending excited states. Fermi resonance between the second excited methyl torsional state and the first excited skeletal bending state was analyzed in relation to the methyl internal rotation.
α-DIALKYLAMINOALKYLNITRILES: PRACTICAL REAGENTS FOR NUCLEOPHILIC ACYLATION
Authors: Reutrakul Vichai , Ratananukul Piniti , Nimgirawath Surachai 
Published: July 2006

Abstract
An efficient synthesis of α-hydroxyketones from the reaction of carbonyl compounds and lithio α-dialkylaminoalkylnitriles is described.
A NOVEL RING CLOSURE REACTION BETWEEN 1,4-DIHYDROXYANTHRAQUINONE AND ETHYLENEDIAMINE PROMOTED BY COPPER IONS
Authors: Matsuoka Masaru , Makino Yoshinobu , Takei Toshio , Kitao Teijiro 
Published: July 2006

Abstract
The reaction of 1,4-dihydroxyanthraquinone with ethylenediamine in the presence of Cu(I)Cl or Cu(II)Cl2 gave 6-hydroxy-1,2,3,4-tetrahydronaphtho- (2, 3-f) -quinoxaline- 7,12-dione in quantitative yield at ambient temperature. The reaction was promoted greatly by copper ions. The possible mechanism and the role of copper ions were discussed.
A NEW METHOD FOR DETERMINATION OF COMPLEX STABILITY CONSTANT BY ISOTACHOPHORESIS
Authors: Kiso Yoshiyuki , Hirokawa Takeshi 
Published: July 2006

Abstract
A method for the isotachophoretic determination of stability constant was examined by a computor analysis of the observed isotachopherograms. The obtained values for acetate complexes with Ba, Ca, Zn, Cd, Cu and Ca-tartrate complex were compared with those obtained by the other methods and discussed. The present method is applicable even for mixed samples.
OXIDATION OF ALDEHYDES BY THIAZOLIUM IONS AND FLAVIN IN A CATIONIC MICELLE
Authors: Yano Yumihiko , Hoshino Yutaka , Tagaki Waichiro 
Published: July 2006

Abstract
The reactions of aldehydes with thiazolium ions and flavin were investigated in the presence of CTABr micelle. The reactions were found to be facilitated by a cationic micelle.
SYNTHESIS OF ANTHRACYCLINONES VIA o-QUINODIMETHANES
Authors: Fariña Francisco , Primo Jaime , Torres Tomás 
Published: July 2006

Abstract
The preparation of several key intermediates in the synthesis of anthracyclinones is described. The key step in the construction of the C ring of the tetracyclic system involves a Diels-Alder reaction with an appropriate o-quino-dimethane.
CORRELATION PHOTOACOUSTICS
Authors: Kato Kenji , Ishino Shoichi , Sugitani Yoshinori 
Published: July 2006

Abstract
Cross correlation between the pseudo-random excitation signal and the resultant photoacoustic signal were recorded as a function of delay time τ. The correlation spectra showed peaks of transient phenomenon of heat generation for carbon black sample. This technique was found possible to observe the photoacoustic spectra at optionaly delayed time for spinach leaf sample.
DECOMPOSITION OF PCB′s IN A HYDROGEN GLOW DISCHARGE PLASMA
Authors: Hiraoka Kenzo , Nakamura Teruo , Matsunaga Kazumasa 
Published: July 2006

Abstract
A study was made on the decomposition of PCB’s in a radio-frequency glow discharge plasma of hydrogen. PCB’s were completely decomposed in a plasma of hydrogen at 1 Torr. Major gaseous products were ethane, isgbutane, and several higher hydrocarbons were recognized as minor products. Almost all of chlorine in PCB’s was converted to hydrogen chloride.
UNUSUAL DISPROPORTIONATION ENCOUNTERED IN THE ALUMINA-CATALYZED DEHYDRATION OF 4-(α-HYDROXYETHYL) PHENOLS
Authors: Kamogawa Hiroyoshi , Watanabe Motoshi , Oka Sachiyo , Nanasawa Masato 
Published: July 2006

Abstract
Alumina-catalyzed dehydrations of 4-(α-hydroxyethyl)phenols provided unusual disproportionation products: 4-ethylphenols and 4-acetylphenols and their tautomers.
ELECTROCHEMICAL PROPERTIES OF SOME ALKOXO-BRIDGED BINUCLEAR COPPER(II) COMPLEXES WITH SULFUR-CONTAINING LIGANDS
Authors: Mikuriya Masahiro , Aihara Makoto , Nishi Yumiko , Okawa Hisashi , Kida Sigeo 
Published: July 2006

Abstract
Electrochemical properties of alkoxo-bridged binuclear copper(II) complexes with sulfur-containing tridentate ligands, Cu{RS(CH2)2NH(CH2)3O}ClO4 and Cu{R2N(CH2)2S(CH2) 2O}X (R=alkyl; X=Cl, Br), were investigated. The former showed a two-electron reduction, Cu(II)–Cu(II)→Cu(I)–Cu(I), near −0.2 V (vs. SCE), while the latter showed two one-electron reductions at ∼0.2 and −0.3∼−0.6 V (vs. SCE): Cu(II)–Cu(II)→Cu(II)–Cu(I)→Cu(I)–Cu(I).
OXIDATION OF ALKANES AND ALKENES BY N2O OVER UV IRRADIATED MgO
Authors: Yun Chebock , Anpo Masakazu , Mizokoshi Yasuo , Kubokawa Yutaka 
Published: July 2006

Abstract
The reactions occurring under UV irradiation of a mixture of N2O and alkanes or alkenes over MgO have been investigated. From the distribution of the products it is concluded that the oxygen species responsible for the reactions are O− ions. In disagreement with the results of the reactions of O− ions reported by Lunsford et al., in the case of alkanes most of the alkene formation proceeds at room temperature and in the reactions of 2-C4H8 the dehydrogenation is not the major reaction.
SELECTIVITY OF PALLADIUM AND PLATINUM CATALYSTS IN THE HYDROGENOLYSIS OF 4-HYDROXY- AND 4-METHOXYCYCLOHEXANONES
Authors: Teratani Shousuke , Chihara Teiji 
Published: July 2006

Abstract
Hydrogenolysis of 1,4-cyclohexanedione, 4-hydroxycyclohexanone and 4-methoxycyclohexanone has been studied using palladium and platinum as catalysts. Palladium cleaves the C–O single bond while platinum cleaves the C=0 double bond preferentially.
STRUCTURE AND NATURE OF CATIONIC REVERSED MICELLES AS STUDIED BY NMR IN THE PRESENCE OF CUPRIC CHLORIDE
Authors: Kondo Hiroki , Hamada Tomiko , Yamamoto Shinji , Sunamoto Junzo 
Published: July 2006

Abstract
Cupric chloride enhances solubilization of water into hexadecyltrimethylammonium chloride micelles in chloroform to a great extent. The NMR signals of water protons and N-methyl protons of the surfactant are extremely broad at low water concentrations in the presence of 31 mM cupric chloride. However, they become sharper with the increase in water concentration, indicating the decreased interaction of cupric ion with the surfactant and water in the micellar core.
HIGH-PRESSURE SYNTHESIS AND PROPERTIES OF Eu(II)-METABORATES
Authors: Machida Ken-ichi , Adachi Gin-ya , Shiokawa Jiro , Shimada Masahiko , Koizumi Mitsue 
Published: July 2006

Abstract
High-pressure treatments of Eu(II)-metaborate, EuB2O4, were made and several new phases of EuB2O4 were obtained. The resulting phases were characterized by X-ray analysis, magnetic susceptibility and luminescent spectral measurements.
STEREOCHEMICAL STUDY ON THE REACTION OF COBALOXIME(I) WITH 2-SUBSTITUTED CYCLOHEXYL HALIDES. EVIDENCE FOR AN ELECTRON TRANSFER MECHANISM
Authors: Okabe Masami , Tada Masaru 
Published: July 2006

Abstract
Reaction of cobaloxime (I) , (CoI)−, with 2-hydroxy- (1a and 1b) and 2-alkoxycyclohexyl halides (1c–1h) gave 2-hydroxy- and 2-alkoxycyclohexyl cobaloximes (III) (2 and 3) . Stereochemistry of the organocobaloxime was independent of the configuration of the starting halides. 2-Allyloxycyclohexyl halides (6a and 6b) gave the organocobaloxime having 9-methyl-7-oxabicyclo[4,3,0]nonane moiety. These results show the radical intermediates formed by an electron transfer from cobaloxime(I) to the halides.
SELECTIVE FORMOSE REACTION CATALYZED BY DIETHYLAMINOETHANOL
Authors: Matsumoto Toshihiko , Komiyama Makoto , Inoue Shohei 
Published: July 2006

Abstract
Selective formose reactions were achieved by diethylaminoethanol as catalyst at 100°C in the presence and the absence of d-fructose as co-catalyst. The reaction in the presence of the co-catalyst gave 2-hydroxymethylglycerol and other three main products in high yields, whereas in its absence pentaerythritol was the sole product.
OPTICALLY ACTIVE PERFLUORO-2-PROPOXYPROPIONIC ACID
Authors: Kawa Hajimu , Ishikawa Nobuo 
Published: July 2006

Abstract
The diastereomeric amides prepared from (±)-perfluoro-2-propoxypropionyl fluoride and (−)-l-phenylethyl amine were separated chromatographically, and subsequent hydrolysis of each amide gave (+) and (−)-perfluoro-2-propoxypropionic acids, the first example of optically active and enantiomeric perfluorocarboxylic acids.
LIGHT-INDUCED ELECTRON-TRANSFER FROM PHEOPHYTIN a TO QUINONE STUDIED BY CIDNP TECHNIQUE — A SIMULATION OF THE PRIMARY PROCESS IN PHOTOSYNTHESIS
Authors: Maruyama Kazuhiro , Furuta Hiroyuki , Otsuki Tetsuo 
Published: July 2006

Abstract
Strong CIDNP indicating the electron-transfer from pheophytin a to quinone was observed upon illumination of a methanol solution of pheophytin a and quinone. The intensities of the CIDNP signals are dependent upon the concentration of added acid.
THE CRYSTAL STRUCTURE OF CYCLOOCTA-1,5-DIENE-4-DIPHENYLPHOSPHINO-2-DIPHENYLPHOSPHINOMETHYLPYRROLIDINE(PPM)-RHODIUM(I) PERCHLORATE
Authors: Ohga Yoko , Iitaka Yoichi , Achiwa Kazuo 
Published: July 2006

Abstract
The crystal structure of the title compound which has almost no chiral activity in hydrogenation reaction was determined by X-ray diffraction method. The coordination of the rhodium ion was found to be a trigonal bipyramid, the apices being occupied by a diene group and an imino group of the pyrrolidine ring.
A DIRECT PHENYLSELENENYLATION OF ALKYL HALIDES, ALKENYL SULFONATES, AND EPOXIDES BY AN ELECTROREDUCTION OF DIPHENYL DISELENIDE
Authors: Torii Sigeru , Inokuchi Tsutomu , Asanuma Goro , Sayo Noboru , Tanaka Hideo 
Published: July 2006

Abstract
A convenient procedure for phenylselenenylation of alkyl halides, alkenyl sulfonates, and epoxides with phenyl selenide anion was accomplished by electroreduction of diphenyl diselenide in a protic solvent.
ORGANIC METALS: FILMS OF AsF5 DOPED POLY-4,4′-BIPHENYLENE
Authors: Tanaka Masashi , Watanabe Atsushi , Fujimoto Hitoshi , Tanaka Jiro 
Published: July 2006

Abstract
Metallic film of poly-4,4′-biphenylene is prepared by the AsF5 oxidation and the conductivity of AsF5 doped film is measured as a function of temperature. The maximum conductivity at 295 K of the heavily doped film becomes σ295K ≅6 Ω−1 cm−1, although the conductivity for the undoped material is less than 10−4 Ω−1 cm−1. The film doped for one day under 300 mmHg of AsF5 gas is metallic between 295 and 250 K.
SUCCESSIVE SHORT GLYCYL SEQUENCE PROHIBITING FORMATION OF ASSOCIATED β-STRUCTURE IN THE PRECIPITATION
Authors: Katakai Ryoichi 
Published: July 2006

Abstract
A peptide consisting of l-alanine and l-leucine, Nps-(l-Leu-l-Leu-l-Ala)4-OEt takes β-Structure in spite of its peptide length above the critical peptide length for the formation of α-helix in the solid state. Introduction of successive short glycyl residues to the terminal position of the peptide prevents the formation of the β-structure to develop the α-helix of the peptide.
EFFECT OF GUEST CATION ON THE PHOTOREACTIVITY OF THE PYRAZINE DERIVATIVES HAVING CROWN ETHER MOIETY
Authors: Tada Masaru , Hamazaki Hirohide , Hirano Hideki 
Published: July 2006

Abstract
Irradiation of the acetonitrile solution of 4′-(5,6-dicyanopyrazin-2-yl)benzo-15-crown-5 (1) or 4-(5,6-dicyanopyrazin-2-yl)-1,2-dimethoxybenzene (2) in the presence of triethylamine gave monodecyano-derivative (3 or 4) and bisdecyano-derivative (5 or 6). Sodium ion stimulates the reaction of the crown ether derivative.
ELECTROLYTIC OXIDATION OF FERROCENE IN THE PRESENCE OF TRACE AMOUNTS OF DISSOLVED OXYGEN
Authors: Sato Masanori , Yamada Takeshi , Nishimura Akira 
Published: July 2006

Abstract
Ferricinium ion formed by the electrolytic oxidation of ferrocene in polar aprotic solvents is very sensitive to the presence of trace amounts of dissolved oxygen. By the use of current reversal chronopotentiometry and cyclic voltammetry, it was shown that a part of ferricinium ion rapidly decomposes according to unknown chemical processes.
PREPARATION OF α,β-UNSATURATED CARBOXYLIC ESTERS BY THE REACTION OF ACI-NITROESTERS WITH ETHOXYCARBONYLMETHYLENETRIPHENYLPHOSPHORANE
Authors: Mitsunobu Oyo , Kimura Junji , Shimizu Tatsuhiko , Kawashima Atsushi 
Published: July 2006

Abstract
The reaction of ethoxycarbonylmethylenetriphenylphosphorane with aci-nitroesters derived from 2,6-di-t-butyl-4-nitrophenol and alcohols afforded α,β-unsaturated carboxylic esters. When mono-aci-nitroester of 1,3-butanediol or 1,6-hexanediol was used, (E)-ethyl 5-hydroxy-2-hexenoate or (E)-ethyl 8-hydroxy-2-octenoate was obtained.
PALLADIUM(II)-CATALYZED CYCLIZATION OF γ-BENZYL GLUTAMATE WITH FORMATION OF BENZALDEHYDE
Authors: Odani Akira , Yamauchi Osamu 
Published: July 2006

Abstract
γ-Benzyl glutamate in water at neutral pH undergoes palladium(II)-catalyzed cyclization with oxidation of the ester bond to give pyroglutamic acid, benzaldehyde, and palladium metal. The reaction is specific for γ-benzyl glutamate and not observed for β-benzyl aspartate and γ-methyl glutamate.
REGIOCHEMICAL CONTROL IN THE 1,2-CARBONYL TRANSPOSITION OF α,α′-DIMETHYLENE SYSTEMS THROUGH REGIOSELECTIVE SULFENYLATION OF TOSYLHYDRAZONE DIANIONS
Authors: Mimura Tetsuya , Nakai Takeshi 
Published: July 2006

Abstract
The regiochemical outcomes are described in the 1,2-carbonyl shift of α,α′-dimethylene systems which relies upon the regioselective sulfenylation of tosylhydrazone dianions leading to the enol thioethers of transposed ketones. Notably, a high regiospecificity was obtained with β-methyl- and β,β-dimethylcyclohexanone without any attempts to separate the stereoisomers of the hydrazones.
LASER-PHOTOLYSIS STUDY OF BIRADICAL FORMATION FROM THE TRIPLET STATE OF 2,4,6-TRIISOPROPYLBENZOPHENONE
Authors: Hayashi Hisaharu , Nagakura Saburo , Ito Yoshikatsu , Umehara Yasutoshi , Matsuura Teruo 
Published: July 2006

Abstract
Intramolecular biradical formation from the triplet state of 2,4,6-triisopropylbenzophenone was studied by the ns laser-photolysis technique. The transient absorption spectra of the triplet state and the biradical were measured and their lifetimes were determined to be 225±13 ns and 17±2 μs in acetonitrile, respectively.
PREPARATION AND RESOLUTION OF THE fac-TRIS(2-AMINOETHYLDIMETHYLPHOSPHINE)COBALT(III) COMPLEX AND THE ABSOLUTE CONFIGURATION OF ITS (+)589-ISOMER DETERMINED BY X-RAY ANALYSIS
Authors: Kinoshita Isamu , Kashiwabara Kazuo , Fujita Junnosuke , Matsumoto Keiji , Ooi Shun’ichiro 
Published: July 2006

Abstract
A new lemon-yellow fac-[Co{NH2CH2CH2P(CH3)2}3]Br3·3H2O complex was prepared and resolved into enantiomers by SP-Sephadex column chromatography. The absolute configuration of the (+)589-isomer was determined by the X-ray method to be Δ-configuration.
FACILE SCHIFF BASE FORMATION BETWEEN PYRIDOXAL AND AMINO ACID IN REVERSED MICELLES
Authors: Kondo Hiroki , Yoshinaga Hiroyuki , Sunamoto Junzo 
Published: July 2006

Abstract
Schiff base formation between pyridoxal and alanine, arginine or methionine is facilitated by a factor of 10–100 in 0.10 M. AOT/ 0.33 M H2O/1.5 mM NaOH/CCl4 reversed micelles compared with that in aqueous media. There are two species of the Schiff base present in the system, one being the ionized form (SB 1) and the other un-ionized form (SB 2) with respect to the azomethin and phenolic hydroxyl groups. The former is predominant for alanine and arginine, while the latter is favored by methionine.
THE EFFECT OF EXTERNAL MAGNETIC FIELD ON THE PHOTOINDUCED SUBSTITUTION REACTION OF 1-ISOQUINOLINECARBONITRILE
Authors: Hata Norisuke , Yamada Yukio 
Published: July 2006

Abstract
The photosubstitution reaction of 1-isoquinolinecarbonitrile in ethanol was found to be subject to a magnetic field effect due to the Δg mechanism. The result suggests that the reaction proceeds predominantly via the formation of triplet radical pair subsequent to hydrogen abstraction by the triplet nitrile from the solvent, although it does not exclude the singlet reaction pathway.
HYDROALUMINATION OF ALLYL ALCOHOLS AND ETHERS BY LITHIUM ALUMINUM HYDRIDE IN THE PRESENCE OF ZIRCONIUM CATALYST
Authors: Sato Fumie , Tomuro Yasuji , Ishikawa Hiroaki , Sato Masao 
Published: July 2006

Abstract
Allyl alcohols and ethers were readily hydroaluminated by LiAlH4 in the presence of zirconium compounds to give organoaluminum compounds in which the aluminum atom is placed at the terminal position of the substrate. ZrCl4 was the most effective catalyst for hydroalumination of allyl alcohols, whilst Cp2ZrCl2 was more effective than ZrCl4 for allyl ethers.
THE STEREOSELECTIVE SYNTHESIS OF d- AND l-RIBOSE
Authors: Yamaguchi Masahiko , Mukaiyama Teruaki 
Published: July 2006

Abstract
The allylcadmium compound, prepared in situ from 2-allyloxybenzimidazole, reacts with 2,3-O-isopropylidene-d and l-glyceraldehyde in highly regio- and stereoselective manner to give the corresponding enantiomeric adducts. The adducts are futher transformed to d- and l-ribose, respectively, by a four-steps process.
X-RAY PHOTOELECTRON AND AUGER ELECTRON SPECTROSCOPIC STUDY OF Mg-MONTMORILLONITE
Authors: Seyama Haruhiko , Soma Mitsuyuki 
Published: July 2006

Abstract
Deconvolution of X-ray excited Mg Is photoelectron and Auger (KL23L23) electron spectra of Mg-montmorillonite into the spectra of the exchangeable and non-exchangeable skeletal magnesium of the clay revealed considerable difference in the electronic state for magnesium of the two origins. The chemical state of the exchangeable magnesium in montmorillonite was similar to that of magnesium in magnesium fluoride and chloride.
A NEW POWERFUL AND SELECTIVE REDUCING AGENT SODIUM BOROHYDRIDE-PALLADIUM CHLORIDE SYSTEM
Authors: Satoh Toshio , Mitsuo Naoki , Nishiki Mayumi , Nanba Kenryo , Suzuki Shuichi 
Published: July 2006

Abstract
A new reducing agent, sodium borohydride-palladium chloride system reduces aryl ketones, aryl chlorides, and benzylic alcohols to corresponding hydrocarbons. It also reduces hindered steroidal ketones to alcohols in good yields.
REACTION OF TRIPHENYLPHOSPHINE-CARBON TETRAHALIDE REAGENT WITH α-KETO-γ-LACTONE
Authors: Suda Minoru , Fukushima Asako 
Published: July 2006

Abstract
Triphenylphosphine-carbon tetrahalide reagent reacts with 4,4-dimethyloxolan-2,3-dione to afford two dihalomethyleneoxolanes, 8 and 9. The major reaction course can be changed by the addition order of the reagents. Reaction mechanisms are discussed.
FACILE SYNTHESIS OF DIALKYL FLUOROMALONATES AND THEIR DERIVATIVES
Authors: Ishikawa Nobuo , Takaoka Akio 
Published: July 2006

Abstract
Dimethyl and diethyl fluoromalonates were prepared by the stepwise basic alcoholysis of hexafluoropropene in a total yield of 50–55%. These dialkyl fluoromalonates were alkylated with alkyl halides, and the resulting dialkyl α-fluoroalkylmalonates were cyclized with urea affording 5-fluorobarbituric acid derivatives.
APPLICATION OF THE WATER-GAS SHIFT REACTION. REDUCTION OF NITROBENZENES WITH CO AND H2O CATALYZED BY Ru(II) COMPLEXES
Authors: Okano Tamon , Fujiwara Kensuke , Konishi Hisatoshi , Kiji Jitsuo 
Published: July 2006

Abstract
The ionic complex [Ru(cod)py4](BPh4)2 (cod = 1,5-cyclooctadiene, py=pyridine) has been shown to be an efficient catalyst for the reduction of nitrobenzenes with carbon monoxide and water, which gives anilines selectively.
(−)-LEPIDOZENAL, A SESQUITERPENOID WITH A NOVEL TRANS-FUSED BICYCLO[8.1.0]UNDECANE SYSTEM FROM THE LIVERWORT LEPIDOZIA VITREA
Authors: Matsuo Akihiko , Kubota Naoji , Nakayama Mitsuru , Hayashi Shûichi 
Published: July 2006

Abstract
A sesquiterpene aldehyde, (−)-lepidozenal, having a novel trans-fused bicyclo[8.1.0]undecane carbon skeleton has been isolated from the liverwort Lepidozia vitvea, and its structure and absolute configuration have been shown to be (6S,7R)-lepidoza-1(10)E,4E-dien-14-al, on the basis of the chemical and spectral evidence.
SKELETAL REARRANGEMENT OF 2,5-DIARYL-1,4-DITHIIN-1-OXIDES INDUCED BY HYDROCHLORIC ACID
Authors: Kobayashi Keiji , Mutai Kiyoshi 
Published: July 2006

Abstract
Treatment of 2,5-diphenyl-1,4-dithiin-1-oxide with hydrochloric acid in dioxane caused a novel skeletal rearrangement to give 2-benzoyl-4-phenyl-1,3-dithiole together with the deoxygenation products. The reaction with gaseous hydrogen chloride in methanol afforded the adduct due to the additive Pummerer rearrangement, which was also converted into the 1,3-dithiole.
A CONVENIENT SYNTHESIS OF 2-DEOXY-d- RIBOSE
Authors: Harada Taira , Mukaiyama Teruaki 
Published: July 2006

Abstract
Successive treatment of allyltin difluoroiodide, formed in situ by the oxidative addition of stannous fluoride to allyliodide, with 1,2-O-isopropylidene-d-glyceraldehyde and phenoxyacetyl chloride results in the predominant formation of erythro homoallylester, which is in turn converted into 2-deoxy-d-ribose.
DIARYL TELLURIDES FROM THE REACTION OF MODERATELY ACTIVATED IODOARENES WITH BENZENETELLUROLATE ION IN HEXAMETHYLPHOSPHORIC TRIAMIDE
Authors: Suzuki Hitomi , Abe Hisako , Ohmasa Nobuko , Osuka Atsuhiro 
Published: July 2006

Abstract
When heated in hexamethylphosphoric triamide at 80–90°C, preferably in the presence of copper(I) iodide, moderately activated iodoarenes undergo nucleophilic attack by benzenetellurolate ion, giving the corresponding unsymmetrical diaryl tellurides in fair to good yields.
CATIONIC CYCLIZATION OF GERANONITRILE AND RELATED COMPOUNDS VIA THEIR BROMOHYDRINS: APPLICATION TO THE SYNTHESIS OF (±)-SNYDEROLS
Authors: Murai Akio , Abiko Atsushi , Kato Koji , Masamune Tadashi 
Published: July 2006

Abstract
Cationic cyclization of bromohydrins of geranonitrile and homogeranonitrile in the presence of boron trifluoride complexes proceeded smoothly, giving mixtures of bromo cyclic olefins in satisfactory yields. This cyclization method was applied to the synthesis of (±)-snyderols.
REVERSIBLE HELIX REVERSION INDUCED BY LIGHT IN POLYASPARTATES WITH SMALL AMOUNTS OF PHOTOCHROMIC SIDE CHAINS
Authors: Ueno Akihiko , Takahashi Keiko , Anzai Jun-ichi , Osa Tetsuo 
Published: July 2006

Abstract
In mixed solvents of 1,2-dichloroethane and trimethyl phosphate, the copolymer 1 containing 8 mol % of azo groups exhibits a drastic conformational change from left-handed helix to right-handed helix by photoirradiation.