bluuebunny/crossref_metadata_2025_split huggingface dataset:
THE IMPORTANT ROLE OF THE BULK OF 12-TUNGUSTOPHOSPHORIC ACID IN THE CATALYTIC DEHYDRATION OF ALCOHOLS TO OLEFINS
Authors: Okuhara Toshio , Kasai Atsushi , Hayakawa Nobukiyo , Misono Makoto , Yoneda Yukio 
Published: July 2006

Abstract
Organic compounds containing oxygen and nitrogen like alcohols and pyridine were readily incorporated into the bulk of heteropoly acids, while hydrocarbons such as butenes and benzene were adsorbed only on the surface. It was found in the dehydration of ethanol over H3PW12O40 that ethylene was yielded predominantly from absorbed ethanol in the bulk, whereas diethyl ether was formed on the surface.
CYCLOADDITIONS OF 4-SUBSTITUTED 3,5-DIMETHYL-5,6-DIHYDROANISOLES WITH METHYL ACRYLATE
Authors: Murai Akio , Sato Shingo , Masamune Tadashi 
Published: July 2006

Abstract
The title reactions proceeded smoothly and gave mixtures of four stereoisomeric cycloadducts differing in the configurations at C-8 and C-2, whose relative amounts varied depending on bulkiness of the 4-substituents and reaction temperature used.
A NEW DEHYDROGENATION REACTION OF INDOLINES TO INDOLES VIA AZASULPONIUM SALTS
Authors: Kikugawa Yasuo , Kawase Masami 
Published: July 2006

Abstract
Indolines (1) have been converted to the corresponding azasulfonium salts (2) and the subsequent intramolecular base catalyzed abstraction of the hydrogen at C-2 gave indoles(4) in good yields.
SELECTIVE REDUCTION OF ALDEHYDES WITH SODIUM TRIARYLOXYBOROHYDRIDES
Authors: Yamaguchi Shozo , Kabuto Kuninobu , Yasuhara Fujiko 
Published: July 2006

Abstract
Sodium tris-(3,5-dimethyl-, and 3,5-di-t-butylphenoxy)borohydrides soluble in tetrahydrofuran have been prepared. These stable hydride complexes exhibit an excellent chemoselectivity for thereduction of aldehydes in the presence of ketones.
MONITORED AMINOLYSIS OF 3-ACYL-l,3-THIAZ0LIDINE-2-THI0NE WITH AMINO ACID AND ITS DERIVATIVE: PEPTIDE BOND FORMATION, CHEMOSELECTIVE ACYLATION, AND BRIDGING REACTION
Authors: Nagao Yoshimitsu , Miyasaka Tadayo , Seno Kaoru , Yagi Masahiro , Fujita Eiichi 
Published: July 2006

Abstract
As a new extention of the monitored aminolysis of 3-acyl-l,3-thiazolidine-2-thione, its applications to peptide bond formation, chemoselective acylation of amino acid, and bridging reaction onthe enzyme model are reported.
COPPER(II) AND NICKEL(II) COMPLEXES OF A “STRATI-BIS” LIGAND, 1,2,3,4-TETRAKIS (SALICYLIDENEAMINO)-2,3-DIMETHYLBUTANE
Authors: Izumitani Tatsuo , Okawa Hisashi , Kida Sigeo 
Published: July 2006

Abstract
Copper(II) and nickel (II) complexes of a new binucleating ligand 1,2,3,4-tetrakis(salicylideneamino)-2,3-dimethylbutane (H4sata), Cu2(sata) 2.5H2O and Ni2(sata)2H2O, have been prepared and characterized. Electronic and ESR spectra indicated that there operates a magnetic interaction between the copper ions in Cu2(sata)2.5H2O, suggesting a stacking between the two CuN2O2 planes.
REINVESTIGATION OF RESONANCE RAMAN SPECTRUM OF RUTHENIUM RED AND ITS PHOTODEGRADATION
Authors: Itabashi Masao , Shoji Kazuo , Itoh Koichi 
Published: July 2006

Abstract
A photodegradation of Ru-red was found during the analysis of its resonance Raman spectrum; an apparent rate constant of the decomposition has been estimated to be about 10 s−1. Reasonable assignments are given to the Raman bands of Ru-red and its derivatives. A structural model is proposed to the compound in its aqueous solution.
PREPARATION AND OPTICAL RESOLUTION OF A NOVEL TRIAMMINEGLYCINATO-NITROCOBALT(III) COMPLEX
Authors: Fujinami Shuhei , Shibata Muraji 
Published: July 2006

Abstract
Three isomers of a new complex [Co(NO2)(gly)(NH3)3]Cl have been prepared and characterized from the ultra-violet absorption spectra in terms of the angular overlap model. A fac(NH3) isomer, which exhibits a novel optical isomerism due to the arrangement of the donor atoms, has been resolved by means of a column chromatography, and the CD spectra of the resolved isomers have been measured.
CATALYTIC POTENCY OF FUNCTIONALIZED (2,5)PYRIDINOPHANES AS NEW PYRIDOXAL MODEL COMPOUNDS
Authors: Iwata Masaaki , Kuzuhara Hiroyoshi 
Published: July 2006

Abstract
Catalytic activities of new model compounds, 1a–c, 2, and 3, for the racemization of monosodium l-glutamate were shown to be more potent, ca. 1.5 fold, than that of pyridoxal, and catalyst, 1a, was stable enough to show no decomposition throughout the reaction.
STRUCTURES OF RHENIUM(VII) OXIDES ON ALUMINA AND THEIR CATALYTIC ACTIVITIES FOR METATHESIS OF OLEFINS
Authors: Nakamura Ryuichi , Abe Fumio , Echigoya Etsuro 
Published: July 2006

Abstract
IR studies revealed that the Re2O7/Al2O3 metathesis catalyst has two different surface rhenium species, [ReO4]ads− and [Re2O7]ads, which are similar in both structure and behavior to those in the aqueous solution of Re2O7. [Re2O7]ads, which is present only in high loading catalysts, should be responsible for their high catalytic activity for the metathesis of olefins.
1H-NMR EVIDENCE FOR η4-DIENE COORDINATION STRUCTURE OF ZrCp2(C4H6) AND HAFNACYCLO-3-PENTENE STRUCTURE OF HfCp2(C4H6) IN SOLUTION
Authors: Yasuda Hajime , Kajihara Yasushi , Mashima Kazushi , Lee Keoneil , Nakamura Akira 
Published: July 2006

Abstract
The temperature-variant 1H-NMR study of a 1,3-diene complex, ZrCp2(CH2CHCHCH2), in toluene-d8 showed the η4 -diene coordination structure below −40 °C, while the corresponding Hf complex assumed the metallacyclo-3-pentene structure in the wide temperature range of −90∼80 °C.
MECANISME DE CETONISATION DU PHENYLACETYLENE ACIDO-CATALYSEE PAR H2SO4, HSO3CH3 et BF3 (CH3COOH)2. MISE EN EVIDENCE DE L ’INTERMEDIATE ACETOXYSTYRENE
Authors: Montheard Jean-Pierre , Camps Marcel , Benzaid Ahmed 
Published: July 2006

Abstract
Acetic acid neacts with. phenylactylene in acid catalysis to give an intermediate product: α-acetoxystynene which nects fastly to give acetophenone. A kinetical study is shown.
STEREOSELECTIVITY EFFECTED BY INTER-LIGAND, “HYDROPHOBIC” INTERACTION IN TRIS(1-l-MENTHOXY-3-ACETYLACETONATO)COBALT(III) AND CHROMIUM(III)
Authors: Nakamura Michio , Okawa Hisashi , Kida Sigeo 
Published: July 2006

Abstract
Cobalt(III) and chromium(III) complexes of 1-l-menthoxy-3-acetylacetone (H(lC-moac)), Co(l-moac)3, have been synthesized and characterized. On the basis of NMR, electronic absorption and CD spectra, the complexes were demonstrated to have the cis-Λ-configuration. The stereoselectivity was attributed to the inter-ligand, “hydrophobic” interaction occuring between the l-menthyl and the methyl groups.
A SIMPLE SYNTHESIS OF DIHYDROJASMONE BY A NOVEL CYCLIZATION OF β,γ-ENONE
Authors: Fujisawa Tamotsu , Sakai Kunikazu 
Published: July 2006

Abstract
Dihydrojasmone was easily synthesized by bromination of 4-methyl-3-pentyl-4-penten-2-one, which was obtained by the alkylation of mesityl oxide, followed by the treatment with a base.
SYNTHETIC STUDIES ON IRIDOID TERPENES VIA REGIOSELECTIVE SULFENYLATION OF β-KETOESTERS AND OXIDATIVE CLEAVAGE OF β-THIOALCOHOLS —A NOVEL SYNTHETIC ROUTE TO (±)-LOGANIN—
Authors: Hiroi Kunio , Miura Hideyuki , Kotsuji Kumiko , Sato Shuko 
Published: July 2006

Abstract
Regioselective sulfenylation of ethyl 2-oxocyclopentanecarboxylate (3) and methyl 7 , 7-ethylenedioxy-3-oxobicyclo [3.3.0] octane-2-carboxylate (12), followed by NaBH4 reduction and subsequent oxidative ring cleavage with lead(IV) acetate gave ethyl 2-acetoxy-6-phenylthio-2,3,5,6-tetrahydro-4H-pyran-3-carboxylate (7) and methyl 3-acetoxy-6,6-ethylenedioxy-1,3,4,4a,5,6,7,7a-octahydro-l-phenylthiocyclopenta[c]pyran-4-carboxylate (15). Hydrolysis of the thioacetals (7 and 15) led to the 5,6-dihydro-6-hydroxy-4H-pyran-3-carboxylic acid esters characteristic of iridoid terpenes.
TRIBOLUMINESCENCE AND TRIBOPOLYMERIZATION OF 9-ETHYL-3-VINYLCARBAZOLE
Authors: Inoue Takashi , Tazuke Shigeo 
Published: July 2006

Abstract
9-Ethyl-3-vinylcarbazole(I) was found to be triboiuminescent as well as tribopolymerizable in crystalline state. When mechanical stress was applied to I crystals, the observed luminescence was identified as fluorescence by comparing with photoexcited emission from the crystals and also by energy transfer to singlet excited state of perylene. Tribopolymierization was confirmed by GPC analysis. Although correlation between triboluminescence and tribopolymerization was not clear, friction induced thermal polymerization was unlikely and the singlet excited state of I was tentatively considered as the precursor of initiating species.
STABILITY CONSTANTS OF COMPLEX FORMATIONS BETWEEN CYCLO(l-HISTIDYL-l-HISTIDYL) AND DIVALENT METAL IONS
Authors: Kojima Yoshitane 
Published: July 2006

Abstract
The stability constants of complex formation between cyhis [cyhis=cyclo(l-histidyl-l-histidyl)] as a ligand and some divalent metal ions were determined by Bjerrum’s method. The values of logK1, and logK2 in this order are: Co, 2.8, 2.3; Ni, 3.8, 2.6; Cu, 6.1, 4.9; Zn, 3.8, 2.9.
REACTIONS OF DICHLOROMANGANESE(IV) SCHIFF BASE COMPLEXES WITH WATER AS MODEL FOR WATER OXIDATION IN PHOTOSYSTEM II
Authors: Matsushita Takayuki , Fujiwara Manabu , Shono Toshiyuki 
Published: July 2006

Abstract
The dichloromanganese (IV) complexes with bidentate Schiff bases derived from 3-nitrosalicylaldehyde with monoamines react with water to liberate molecular oxygen. This is confirmed by means of a spectrophotometry with alkaline pyrogallol solution and by using an oxygen electrode. The maximal liberation was observed at neutral pH range. The reaction products were identified to the corresponding manganese(II) complexes. These results suggest us that molecular oxygen is liberated as follows, 2MnIVL2Cl2 + 2H2O→ 2MnIIL2 + O2 + 4H+ + 4Cl−.
SYNTHESIS OF 2-AMINO-3,8-DIMETHYLIMIDAZO[4,5-f]QUINOXALINE (Me-IQx), A POTENT MUTAGEN ISOLATED FROM FRIED BEEF
Authors: Kasai Hiroshi , Shiomi Tomoko , Sugimura Takashi , Nishimura Susumu 
Published: July 2006

Abstract
A potent mutagen, 2-amino-3,8-dimethylimidazo[4,5-f]quinoxaline (Me-IQx), isolated from fried beef and its 3,7-dimethyl derivative were synthesized from 6-amino-3-methylquinoxa1ine and 6-amino-2-methylquinoxaline, respectively. These compounds showed strong mutagenic activity towards Salmonella typhimurium TA98 in the presence of S9 Mix.
SYNERGISM IN CHLORINE EVOLUTION ON NOBLE METAL-DOPED SnO2 FILM ELECTRODES
Authors: Iwakura Chiaki , Taniguchi Yoshikuni , Tamura Hideo 
Published: July 2006

Abstract
The dependence of the current density at given potentials on the RuO2 loading in Ti/SnO2–RuO2 electrodes was investigated in 3 M NaClO4 and 3 M NaCl solutions. The data show the existence of the synergism of SnO2 and RuO2 for chlorine evolution, but not for oxygen evolution.
REACTION OF IODOBENZENE WITH TRIMETHYLTIN CYANIDE IN THE PRESENCE OF TETRAKIS(TRIPHENYLPHOSPHINE)PALLADIUM: NEW COMPLEX FORMATION BETWEEN THE PALLADIUM AND THE CYANIDE
Authors: Kosugi Masanori , Kato Yasuki , Kiuchi Kazuhiko , Migita Toshihiko 
Published: July 2006

Abstract
There were found to be another possible way producing benzonitrile in the reaction of PhI with Me3SnCN in the presence of Pd(PPh3)4, beside the ordinary one involving the oxidative addition of PhI to the Pd complex. Thus, the complexation of Pd complex with Me3SnCN gives a new complex [Pd(PPh3)(Me3SnCN)2]n which reacts with PhI giving PhCN. This path is much faster than the former, but cannot make a catalytic cycle, because the palladium deposits during the reaction of the complex with PhI.
BARRIERS TO ROTATION AND INVERSION IN 1,1′-BIPIPERIDINES
Authors: Ogawa Keiichiro , Takeuchi Yoshito , Suzuki Hiroshi , Nomura Yujiro 
Published: July 2006

Abstract
A 13C dynamic NMR of meso-1,1′-bi (2-methylpiperidine) s revealed that the barrier to the single-passing rotation about the N–N bond was at least 74.1 kJ mol−1, which was considerably higher than the barrier to the passing inversion of the nitrogen atom.
STEREOSELECTIVE FORMATION OF α,α-DIAMINO ACID RESIDUE BY THE ADDITION OF l-α-AMINO ACID TO α-IMINO ACID
Authors: Shin Chung-gi , Ohmatsu Hisao , Sato Yoshiaki , Yoshimura Juji 
Published: July 2006

Abstract
An addition of l-α-amino acids to β,β-dibromo-α-imino acids proceeded to give the corresponding optically active α,α-diamino acid derivatives. A several conversions of the products are also described.
STRUCTURE OF A NEW MODIFIED NUCLEOSIDE FORMED BY GUANOSINE-MALONALDEHYDE REACTION
Authors: Seto Hiroshi , Akiyama Kazuyuki , Okuda Taisuke , Hashimoto Tsuyoshi , Takesue Tomoyuki , Ikemura Tadashi 
Published: July 2006

Abstract
A new modified nucleoside was formed by the reaction of guanosine with malonaldehyde under acidic condition. This compound emitted strong yellow fluorescence and was hydrolyzed by NaOH into guanosine and malonaldehyde. Its structure was determined to be 1,N2-(1-propenyl-3-ylidene)guanosine by the spectroscopic analysis.
A BULKY LIGAND AND ITS ORGANOMETALLIC COMPOUND: SYNTHESIS OF HEPTAMETHYLINDENE AND A FERROCENE-TYPE COMPLEX, Fe(η5-C9Me7)2
Authors: Miyamoto T Ken , Tsutsui Minoru , Chen Li-Ban 
Published: July 2006

Abstract
A bulky new indene, 1-H-1,2,3,4,5,6,7-heptamethylindene, has been synthesized and its application to organometallic chemistry is suggested.
THE CORROBORATE OF THE PREDOMINANT LOCALIZATION OF RADIOACTIVITY ON THE DIMETHYLALLYL PYROPHOSPHATE-DERIVED MOIETY OF LINALOOL BIOSYNTHESIZED FROM RADIOISOTOPICALLY LABELED LEUCINE BY HIGHER PLANTS
Authors: Tange Keiji , Okita Hitoshi , Nakao Yoshitaka , Hirata Toshifumi , Suga Takayuki 
Published: July 2006

Abstract
The co-feeding experiment of leucine-4,5-3H and mevalonic-2-14C acid corroborated the preferential localization of radioactivity on the 3,3-dimethylallyl pyrophosphate-derived moiety of linalool in its biosynthesis from radioisotopically labeled leucine by cinnamomum Camphora Sieb. var. linalooliferum Fujita, in contrast to the predominant location of the activity on its isopentenyl pyrophosphate-derived moiety in the biosynthesis from mevalonic acid. Also, it was established that the imbalance in the localization of radioactivity is not influenced by exogenous administration of leucine or inhibition of isopentenyl pyrophosphate isomerase.
HIGH-PRESSURE HIGH-RESOLUTION N.M.R. PRESSURE DEPENDENCE OF THE PROTON CHEMICAL SHIFTS OF PHENYLACETYLENE AND CHLOROFORM
Authors: Yamada Hiroaki , Nishitani Shinji , Sera Akira 
Published: July 2006

Abstract
The acetylenic proton, in a striking contrast to the chloroform proton, exhibited a marked low field shift upon pressurization. Dissimilarity in the molecular shape between phenylacetylene and chloroform is considered to give rise to a difference in the high pressure association mode.
EFFECTS OF MACROMOLECULAR ASSOCIATION ON FLUORESCENCE AND PHOTODIMERIZATION BEHAVIORS OF POLYMERIC ANTHRACENE CHROMOPHORE IN AN AQUEOUS SOLUTION
Authors: Osada Yoshihito , Koike Masayoshi , Katsumura Etsuo 
Published: July 2006

Abstract
Anthracene chromophore attached to the chain end of poly(ethylene glycol) (PEG-Ant) was found to exhibit excimer fluorescence down to 10−7 M in an aqueous solution. Macromolecular association of PEG-Ant with poly(methacrylic acid) (PMAA) increased excimer emission intensity by a factor of 10 as well as the rate of photodimerization.
SYNTHESIS OF (+)-AVENIC ACID A
Authors: Ohfune Yasufumi , Nomoto Kyosuke 
Published: July 2006

Abstract
Avenic acid A (2), the metal chelator excreted from oat root and the factor which is considered to be directly involved in the uptake and transport of iron and other elements, has been synthesized efficiently from l-N[3-hydroxy-3-carboxypropyl]homoserine aldehyde, which could be a biosynthetic precursor.
UNUSUAL HIGH REACTIVITIES OF Δ5 STEROIDS IN PALLADIUM CATALYZED HYDROGENATION
Authors: Nishimura Shigeo , Takahashi Izumi , Shiota Michio , Ishige Masayoshi 
Published: July 2006

Abstract
Hydrogenation of a mixture of 3β-hydroxyandrost-5-en-17-one or cholesterol with α-pinene has revealed that the Δ5 steroids are more reactive than α-pinene over palladium while α-pinene is much more reactive than the Δ5 steroids with other platinum metals.
TOTAL SYNTHESIS OF SCELETIUM (AIZOACEAE) ALKALOIDS. THE CINNAMONITRILE ROUTE. THE TOTAL SYNTHESIS OF RACEMIC O-METHYL JOUBERTIAMINE AND MESEMBRINE
Authors: Sanchez Ignacio H , Tallabs F Ramón 
Published: July 2006

Abstract
A new method of synthesis of Sceletium (Aizoaceae) alkaloids based on the introduction of a “formyl anion” equivalent at the β-position of a cinnamonitrile, followed by Robinson annulation and final modification of the resulting cyanomethyl side chain is described. The method has been successfully applied to the total synthesis of racemic O-methyljoubertiamine (1) and mesembrine (2).
REDUCTION OF ACETYLENE TO ETHYLENE CATALYZED BY THE REDUCED SPECIES OF [Fe4S4(SPh)4]2− AND [Mo2Fe6S9(SPh)8]3−: A MODEL REACTION TO NITROGENASE
Authors: Tanaka Koji , Tanaka Masahiro , Tanaka Toshio 
Published: July 2006

Abstract
Reduction of acetylene to ethylene is catalyzed by [Fe4S4(SPh)4]n-([4-Fe]n-, n = 3, 4) or [Mo2Fe6S9(SPh)8]m- ([Mo–Fe]m-, m = 4, 5) produced by controlled potential electrolysis of [4-Fe]2− or [Mo-Fe]3− in MeOH/THF and in H2O. The catalytic activity increases in the order [Mo–Fe]4− &lt;&lt; [4-Fe]3− ≅ [Mo–Fe]5− &lt; [4-Fe]4−.
COLLOIDAL NICKEL BORIDE WITHOUT PROTECTIVE AGENT AND ITS CATALYTIC ACTIVITY FOR OLEFIN HYDROGENATION
Authors: Nakao Yukimichi , Fujishige Shoei 
Published: July 2006

Abstract
A stable dispersion of colloidal nickel boride was prepared from a dilute solution of nickel(II) chloride in ethanol by sodium borohydride reduction in the absence of protective colloid polymers. The colloid is superior to the conventional poly(vinylpyrrolidone)-protected one in the catalytic activity for the hydrogenation of styrenes and unsaturated carbonyl compounds.
ELECTRON SPIN RESONANCE SPECTRA OF 6-SILYL-SUBSTITUTED CYCLOHEXADIENYL RADICALS PRODUCED BY THE REACTION OF SILYL RADICALS WITH BENZENE
Authors: Kira Mitsuo , Sakurai Hideki 
Published: July 2006

Abstract
ESR spectra of three 6-silyl-substituted cyclohexadienyl radicals, generated by the reaction of the corresponding silyl radicals with benzene, are recorded and analyzed.
PREPARATION OF A MONOTERPENE ALKALOID BY THE THERMAL REACTION OF PROPARGYL 4-(3,5-DIMETHYL)PYRIDYL ETHER
Authors: Nitta Makoto , Sekiguchi Akio , Koba Hiroyuki 
Published: July 2006

Abstract
Thermal rearrangement of propargyl 4-(3,5-dimethyl)pyridyl ether afforded 3,7-dimethyl-5-azaindan-2-one which was transformed into racemic actinidine by the subsequent Huang-Minion reduction.
REACTION OF exo-2-NORBORNYL AND 1-ADAMANTYL p-TOLUENESULFONATES WITH SODIUM PHENOXIDE IN TETRAHYDROFURAN. IONIZATION OF THE SUBSTRATES UNDER “APPARENTLY-SN2” CONDITIONS
Authors: Takeuchi Ken’ichi , Kato Yukari , Moriyama Takamasa , Okamoto Kunio 
Published: July 2006

Abstract
exo-2-Norbornyl and 1-adamantyl tosylates react with sodium phenoxide in tetrahydrofuran via ionization, most probably through a cyclic transition state. The results call for attention in interpreting substitution reactions under “apparently-SN2” conditions.
ANODIC OXIDATION OF 2-PROPENYLPHENOLS
Authors: Iguchi Masanobu , Nishiyama Atsuko , Eto Hideo , Yamamura Shosuke 
Published: July 2006

Abstract
Anodic oxidation of 2-propenylphenols in MeOH was carried out under various conditions, using an undivided cell, to afford several oxidation products including the corresponding asatone-, carpanone-, arylpropanoid-, and austrobailignan-type compounds. Among them, the carpanone-type neolignans can be produced via the corresponding bis-o-quinonemethides.
LIQUID CRYSTALLINE STRUCTURES OF RANDOM COPOLYMERS OF l-LEUCINE AND γ-BENZYL-l-GLUTAMATE
Authors: Mori Norio 
Published: July 2006

Abstract
The cholesteric pitch of random copolymers of l-leucine and γ-benzyl-l-glutamate in solutions was measured as a function of temperature and the composition of the copolymer. It was found that the increase in leucine residue incorporated in the copolymer increased the temperature dependence of the cholesteric twisted angle.
CHEMILUMINESCENCE IN COLLISIONS OF N+ IONS WITH CO MOLECULES
Authors: Sasaki Hiromi , Inouye Hokotomo 
Published: July 2006

Abstract
Chemiluminescence which is presumed to be due to the transitions of excited CN+ ions formed by the reaction of N+ ions with CO molecules in the LAB energy range 40–150 eV was observed in the spectral range shorter than 3100 Å. Two line spectra due to the transitions of excited C atoms were clearly found. The C atom (1P) is thought to be produced also by an N+–CO reaction.
ELECTROCHEMICAL FORMATION OF 1,3,5-TRI (p-BIPHENYL)BENZENE PENTAANION
Authors: Saji Tetsuo , Aoyagui Shigeru 
Published: July 2006

Abstract
The cyclic voltammogram of 1,3,5-tri (p-biphenyl)benzene in 0.2 M (M = mol dm−3) TBAP-DMeE at −50 °C exhibits five reversible one-electron steps. This may be evidence for the electrochemical formation of mono-, di-, tri-, tetra- and pentaanions of this hydrocarbon. The formation of the pentaanion can be ascribed to the lower three π*-orbital s which are actually three-fold degenerate.
ESR STUDY OF THE CATION RADICAL OF Mn2(μ-AsPh2)2(CO)8
Authors: Hayashida Shigeru , Kawamura Takashi , Yonezawa Teijiro 
Published: July 2006

Abstract
Radiochemical oxidation of Mn2(μ-AsPh2)2(CO)8 in Freon mixture glass gives its cation radical, ESR spectra of which are most consistent with the odd electron orbital with σ*MnMn character consisting mainly of Mn 3d and As 4p atomic orbitals.
VINYL MIGRATION IN THE OXYTHALLATION OF SOME 1,3-DIENES
Authors: Murakami Masashi , Nishida Shinya 
Published: July 2006

Abstract
The oxythallation of certain 1,3-dienes with thallium(III) nitrate trihydrate in MeOH–CH2Cl2 at 0–20 °C gave products after vinyl migration. Methyl 1-methylcyclopropyl ketone, obtained in the reaction of 2,3-dimethyl-1,3-butadiene, was presumably derived from a cyclopropylmethyl cation, an intermediate in the vinyl migration.
CALCULATION OF NEW INDUCTIVE SUBSTITUENT PARAMETER (τ) FOR GROUP AND THE APPLICATION
Authors: Inamoto Naoki , Masuda Shozo 
Published: July 2006

Abstract
The τ values for more than 150 substituents were calculated from group electronegativities obtained by revised method, being in agreement with those obtained from ionicity and bond moment, and were applied to σ-electron densities of XC6H4+, Cα-SCS of RCH2X, JHHtrans of vinyl compounds, and various σ values for electron-withdrawing substituents.
ACTIVE CARBON-SUPPORTED ALUMINIUM COPPER CHLORIDE AS WATER-RESISTANT CARBON MONOXIDE ADSORBENT
Authors: Hirai Hidefumi , Komiyama Makoto , Wada Keiichiro 
Published: July 2006

Abstract
A solid adsorbent of carbon monoxide, aluminium copper(I) chloride supported on active carbon, is prepared from copper(I) chloride, aluminium chloride, and active carbon. The adsorbent is stable against water and is applicable to separation of carbon monoxide from gas mixture containing water.
DEHYDRATIVE α-GLUCOSYLATION USING A MIXTURE OF p-NITROBENZENESULFONYL CHLORIDE, SILVER TRIFLUOROMETHANESULFONATE, N,N-DIMETHYLACETAMIDE, AND TRIETHYLAMINE
Authors: Morishima Naohiko , Koto Shinkiti , Zen Shonosuke 
Published: July 2006

Abstract
Stereoselective synthesis of α-linked di- and trisaccharides is performed by the one-stage glucosylation using 2,3,4,6-tetra-O-benzyl-α-d-glucopyranose and a mixture of p-nitrobenzenesulfonyl chloride, silver trifluoromethanesulfonate, N,N-dimethylacetamide, and triethylamine in dichloromethane.
THE PLATINUM COMPLEX CATALYZED REDUCTIVE CARBONYLATION OF NITROARENE TO URETHANE
Authors: Watanabe Yoshihisa , Tsuji Yasushi , Suzuki Naoki 
Published: July 2006

Abstract
The reductive carbonylation of nitrobenzene to a urethane(ethylphenylcarbamate) is catalyzed by platinum(II)–tin(IV) systems. The catalytic activities are drastically enhanced by addition of a tertiary amine.
NEW CLERODANE DITERPENOIDS FROM AJUGA IVA (LABIATAE)
Authors: Camps Francisco , Coll José , Cortel Adolfo 
Published: July 2006

Abstract
Four new clerodane diterpenoids, Ivains I–IV (1–4), have been isolated from Ajuga iva, and their structures have been elucidated by spectral methods and confirmed by the X-ray diffraction analysis of 2-oxo-Ivain I (7).