bluuebunny/crossref_metadata_2025_split huggingface dataset:
ENANTIOFACE-DIFFERENTIATING 1,4-ADDITION OF METHYL GRIGNARD REAGENT TO 1,3-DIPHENYL-2-PROPEN-1-ONE
Authors: Imamoto Tsuneo , Mukaiyama Teruaki 
Published: July 2006

Abstract
A good optical yield (68%) was achieved in the title reaction in the presence of (S)-1-methyl-2-hydroxymethylpyrrolidine as the chiral ligand.
ELECTROLYTIC BEHAVIOR OF ACETYLACETONE AT LEAD DIOXIDE ELECTRODE IN AQUEOUS SOLUTION
Authors: Fujinaga Taitiro , Yoshimura Tadayosi 
Published: July 2006

Abstract
By using electro-deposited lead dioxide (PbO2) electrode as an indicator, the electrode reaction of acetylacetone in aqueous solution was investigated. In conclusion, it was found that in the cathodic process electrode lead dioxide is reduced to lead ion which reacts with acetylacetone to form the complex and in the anodic process the lead complex is oxidized again and deposited onto the electrode as lead dioxide.
AN ASYMMETRIC SYNTHESIS OF β-FORMYL β-HYDROXY ESTERS
Authors: Sakito Yoji , Asami Masatoshi , Mukaiyama Teruaki 
Published: July 2006

Abstract
Optically active β-formyl β-hydroxy esters are prepared in high enantiomeric excess by treating 2-acyl-1,3-diazabicyclo[3.3.0]octane derivatives, prepared from (S)-2-(substituted aminomethyl)pyrrolidine and phenylglyoxal monohydrate or methyl hydroxymethoxyacetate, with metal enolates of ethyl acetate.
HYDROGEN-DEUTERIUM EXCHANGE KINETICS IN A TRIPLE-HELICAL POLYNUCLEOTIDE
Authors: Hayashi Yuzuru , Nakanishi Mamoru , Tsuboi Masamichi 
Published: July 2006

Abstract
The kinetics of the hydrogen–deuterium exchange reaction has been followed by stopped flow ultraviolet absorption spectroscopy of a triple-helical polynucleotide, composed of 1 mole polyriboadenylic acid and 2 moles of polyribouridylic acid, poly(rU) ·poly(rA) ·poly(rU).
FLOW INJECTION ANALYSIS OF INORGANIC ORTHO- AND POLYPHOSPHATES USING ASCORBIC ACID AS A REDUCTANT OF MOLYBDOPHOSPHATE
Authors: Hirai Yukio , Yoza Norimasa , Ohashi Shigeru 
Published: July 2006

Abstract
A spectrophotometric method based on the formation of heteropoly blue complex was applied to the flow injection analysis of inorganic ortho-and polyphosphates such as diphosphate and triphosphate. Ascorbic acid was used to reduce molybdophosphate. Total amounts of inorganic ortho-and polyphosphates could be determined at a sampling rate of 45 samples/h with a relative standard deviation of less than 1%.
A NEW METHOD FOR THE PREPARATION OF SYMMETRICAL AROMATIC KETONES FROM AROMATIC CARBOXYLIC ACIDS
Authors: Goto Toshio , Onaka Makoto , Mukaiyama Teruaki 
Published: July 2006

Abstract
Treatment of S-(2-pyridyl) aromatic thioates, readily derived from aromatic carboxylic acids, with bis(1,5-cyclooctadiene)nickel [Ni(COD)2] under mild conditions afforded symmetrical aromatic ketones in good yields.
ELECTRON SPIN RESONANCE OF [Co2(CO)6(PBu3n)2](

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Authors: Hayashida Shigeru , Kawamura Takashi , Yonezawa Teijiro 
Published: July 2006

Abstract
Exposure of a frozen 2-methyltetrahydrofuran solution of Co2(CO)6(PBu3n)2 to 60Co γ-rays at 77 K gives its anion radical, whose ESR spectrum revealed that the odd electron occupies the orbital mainly of the Co–Co σ* character together with the Co–P σ* character; the orbital consists of 63–65 % cobalt and 23 % phosphorus atomic orbitals.
THERMAL TRANSITION OF DIMERIC TRIS(2,2,6,6-TETRAMETHYL-3,5-HEPTANEDIONATO)TERBIUM(III)
Authors: Amano Ryohei , Sato Akiko , Suzuki Shin 
Published: July 2006

Abstract
The crystal structure of the title compound was found to change thermally from a monoclinic dimer to an orthorhombic monomer at 147 °C. The transition enthalpy and temperature were determined from differential scanning calorimetric measurements.
BUTADIENE YIELDS IN THE REACTIONS OF BUTENES OVER BINARY LIQUID ALLOY CATALYSTS CONTAINING K OR Na
Authors: Honda Kazuaki , Takahashi Katsumi , Ogino Yoshisada 
Published: July 2006

Abstract
Three liquid alloy catalysts, K–In, K–Pb and Na–Pb, are active for the dehydrogenation of butenes, giving 1,3-butadiene. These catalysts are also active for isomerization and decomposition but an appropriate choice concerning the catalyst, the reactant butene and the reactant partial pressure minimizes the decomposition and improves the reactant recovery.
SYNTHESIS OF 7-CYANO-7-DEAZAGUANINE, ONE OF THE NUCLEOSIDE Q (QUEUOSINE) PRECURSORS FOR THE POST-TRANSCRIPTIONAL MODIFICATION OF tRNA
Authors: Kondo Tadao , Nakatsuka Shin-ichi , Goto Toshio 
Published: July 2006

Abstract
7-Cyano-7-deazaguanine, which is one of the precursors of nucleoside Q (queuosine) biosynthesis, was synthesized from 2-methylthio-6-methoxy-7-methyl-7-deazapurine; methoxymethyl protecting group at 9 position could be removed by transformation to acetoxymethyl group followed by hydrolysis with aq. ammonia.
CF2(1B1) FORMATION BY VACUUM ULTRAVIOLET PHOTOLYSIS OF C2F4
Authors: Koda Seiichiro 
Published: July 2006

Abstract
An emission due to the 1B1 \ightharpoonup 1A1 transition of CF2 radical was observed during the vacuum ultraviolet photolysis of tetrafluoroethylene with Xe and Kr resonance lamps. The extent of vibrational excitation of the CF2(1B1) evidenced that the dissociation process C2F4 + hν \ightharpoonup CF2(1A1) + CF2(1B1) is responsible.
SYNTHESIS OF CYCLIC AMINIMINES WITH PERFLUOROALKYL GROUPS
Authors: Ikeda Isao , Tsukamoto Takeo , Okahara Mitsuo 
Published: July 2006

Abstract
Reaction of perfluoro-2-methyl-2-pentene (1) with 1,1-dimethylhydrazine gave novel type cyclic aminimines, pyrazolium aminimines, and the reaction scheme was discussed.
EFFECT OF ALKYL CHAIN LENGTH OF STATIONARY PHASE ON RETENTION AND SELECTIVITY IN REVERSED PHASE LIQUID CHROMATOGRAPHY
Authors: Tanaka Nobuo , Sakagami Keiko , Araki Mikio 
Published: July 2006

Abstract
Effect of alkyl chain length of stationary phase on retention and selectivity of various hydrocarbons was found to be strongly dependent on the type of organic solvents in mobile phase in reversed phase liquid chromatography. The results suggest the participation of methanol in the retention of polynuclear aromatic hydrocarbons in stationary phase having long alkyl chains.
REVELATION OF PENTACYCLO (6.2.1.02,7.04,10.05,9) UNDECANE \ightleftharpoons OXA-BIRD CAGE EQUILIBRIUM BY 13CMR SPECTROSCOPY: FRAGMENTATION OF CAGED POLYCYCLIC SYSTEMS WITH LEAD TETRAACETATE
Authors: Mehta Goverdhan , Singh Vishwakarma , Pandey Paras N , Chaudhury B , Duddeck Helmut 
Published: July 2006

Abstract
13Cmr evidence is presented to show the existence of pentacyclo (6.2.1.02,7.04,10.05,9) undecane \ightleftharpoons oxa bird cage equilibrium in the parent system 1a. Preparation of some interesting polycyclic compounds via the lead tetracetate fragmentation of polycyclic ketones 1a, 1b and 10 is described.
RAPID MEDIUM CHANGE: A NEW METHOD FOR THE DETERMINATION OF BARRIERS TO ROTATION
Authors: Nakamura Mikio , Nakamura Nobuo , Oki Michinori 
Published: July 2006

Abstract
A new method for the determination of barriers to rotation, which consists of rapid mixing of a solution with a solvent of different polarity and observing the subsequent relaxation process to a new equilibrium, is developed.
ESR SPECTRA AND STRUCTURE OF RADICAL ANIONS OF METHYL DERIVATIVES OF STANNANE
Authors: Hasegawa Akinori , Yamaguchi Takatoshi , Hayashi Michiro 
Published: July 2006

Abstract
ESR spectra of (CH3)xSnH4−x− (x=0∼3) radical anions formed in TMS matrices were observed. These radical anions have trigonal bipyramidal structure and the methyl groups prefer the equatorial positions to the axial positions of the trigonal bipyramid.
A NOVEL ELECTROSYNTHESIS OF α,α-DIMETHOXYALKANOATES FROM α-(2-BENZOTHIAZOLYLTHIO)ALKANOATES
Authors: Torii Sigeru , Okumoto Hirosi , Tanaka Hideo 
Published: July 2006

Abstract
An efficient preparation of α,α-dimethoxyalkanoates (2) has been performed by electrolytic desulfurization of α-(2-benzothiazolylthio) alkanoates (1) in MeOH containing CuCl2 as a catalytic additive, yielding 2 (94–57%) together with disulfide 3 (88–48%).
NON-CONVENTIONAL NITRATION OF 2,5-DIMETHYLTH IOPHENE AND ITS 3,4-DIBROMO DERIVATIVE
Authors: Suzuki Hitomi , Hidaka Ichiro , Osuka Atsuhiro , Iwasa Akemi , Mishina Tadashi 
Published: July 2006

Abstract
Nitration of 2,5-dimethylthiophene with copper(II) nitrate in acetic anhydride gives 2,5-dimethyl-3-nitrothiophene and 3,2′-methylene (2,5-dimethylthiophene) (5′-methylthiophene) as major products. Treatment of 3,4-dibromo-2,5-dimethylthiophene with nitric acid (d = 1.5) in dichloromethane in the presence of a catalytic amount of sulfuric acid yields 3,4-dibromo-5-methyl-2-nitrooxymethylthiophene as the sole major product.
A DIRECT ARYLSELENENYLATION OF ENONES WITH DIARYL DISELENIDES BY A ELECTROREDUCTIVE PROCEDURE
Authors: Torii Sigeru , Inokuchi Tsutomu , Hasegawa Nobu 
Published: July 2006

Abstract
A new procedure for arylselenenylation of enones has been developed by electrolysis with diaryl diselenide and chlorotrimethylsilane in methanol. In the course of the reaction generation of aryl selenols in situ is assumed.
THE STEPWISE CONFORMATIONAL CHANGE OF POLY(l-LYSINE) IN AQUEOUS SOLUTION OF SODIUM 1-OCTANESULFONATE
Authors: Hayakawa Katumitu , Ohara Kazuto , Satake Iwao 
Published: July 2006

Abstract
The circular dichroism spectrum of poly(l-lysine)(PLL) in aqueous 1-octanesulfonate solution was measured as a function of surfactant concentration at varying temperatures and the conformational phase diagram was constructed. At temperatures above 10°C, the increase in surfactant concentration causes PLL to change stepwise from coil to β-form and from β-form to helical conformation, Upon lowering temperature, the surfactant concentration range, where PLL assumes β-form, becomes narrower and eventually disappears at around 10°C.
OXIDATIVE CLEAVAGE REACTION OF 3-METHYLINDOLE CATALYZED BY CuCl-PYRIDINE COMPLEX UNDER OXYGEN
Authors: Tsuji Jiro , Takayanagi Hiroshi 
Published: July 2006

Abstract
Oxidative cleavage reaction of 3-methylindole to give 2-formylaminoacetophenone in 70% yield was achieved by using CuCl-pyridine complex as a catalyst under oxygen.
LITHIUM IODIDE MEDIATED REGIOSELECTIVE COUPLING OF LITHIUM ACETYLIDES WITH ALLYLIC HALIDES
Authors: Yatagai Hidetaka , Yamamoto Yoshinori , Maruyama Kazuhiro 
Published: July 2006

Abstract
Regioselective coupling between lithium acetylides and allylic halides is realized by using lithium iodide as an additive.
BORON TRIFLUORIDE ETHERATE-CATALYZED BACKBONE REARRANGEMENT OF 3α,4α- AND 3β,4β-EPOXY-D:A-FRIEDO-18β,19αH-LUPANES
Authors: Yokoyama Yasushi , Moriyama Yoshihiko , Tsuyuki Takahiko , Takahashi Takeyoshi 
Published: July 2006

Abstract
Treatment of 3α,4α- and 3β,4β-epoxy-D:A-friedo-18β,19αH-lupanes with boron trifluoride etherate gave migrated lupane derivatives, D:B-friedo-18β,19αH-lup-5- and -5(10)-en-3-ols, 18β, 19αH-lup-12-en-3-ols, lup-18-en-3-ols, and lup-19-en-3-ols. D:B-Friedo-18β, 19αH-lup-1(10)-en-3α-ol and 3β, 10β-epoxy-D:B-friedo-18β, 19αH-lupane were also obtained from α- and β-epoxides, respectively. The reaction product ratios in the same reaction in various solvents are listed in Tables.
SODIUM HYDROXIDE-ACTIVATED CATALYST OF COLLOIDAL NICKEL BORIDE FOR ATMOSPHERIC HYDROGENATION OF KETONES AND ALDEHYDES
Authors: Nakao Yukimichi , Fujishige Shoei 
Published: July 2006

Abstract
Addition of sodium hydroxide to colloidal nickel boride in ethanol resulted in a marked enhancement of its catalytic activity for atmospheric hydrogenation of acetone at 30°C by a factor of more than 20. Other ketones and aldehydes with bulky substituents were smoothly hydrogenated by the activated colloidal catalyst.
TRIPHASE CATALYSIS OF POLYMER-BOUND AMINE OXIDE IN CYANIDE DISPLACEMENT ON 1-BROMOOCTANE
Authors: Maeda Hirokazu , Hayashi Yoshiyuki , Teramura Kazuhiro 
Published: July 2006

Abstract
Cross-linked polystyrene supported tertiary amines and amine oxides are found to be a very efficient catalyst for a nucleophilic substitution reaction. The amine oxide resin (MPE-5-AO) was one of the most effective and economical catalysts and can be used several times without the loss of the catalytic activity.
STEREOCONTROLLED SYNTHESIS OF 1′, 4′-DIALKYLATED PYRIMIDINE RIBO-C-NUCLEOSIDES
Authors: Sato Tsuneo , Watanabe Makoto , Noyori Ryoji 
Published: July 2006

Abstract
The first, stereocontrolled entry to 1′, 4′-dialkylated pyrimidine C-nucleosides is outlined.
ELECTROSTATIC AND HYDROPHOBIC EFFECTS OF 1-1 ELECTROLYTES ON THE REACTIONS BETWEEN CHLOROCOBALT(III) COMPLEXES AND MERCURY(II) IONS
Authors: Iida Masayasu , Yamatera Hideo 
Published: July 2006

Abstract
The Hg 2+-assisted aquation of cis-[CoCl(OH2)(phen)2]2+ was retarded by sodium methanesulfonate and benzenesulfonate(0.5–1.0 mol dm−3), while they accelerated a similar reaction of [CoCl(NH3)5]2+.The unusual retardation effect has been attributed to the hydrophobic interaction of the complex ion and the organic sulfonate ions.
ASYMMETRIC HYDROGENATION WITH CHIRAL PHOSPHINE LIGAND HAVING C-PPh2 BONDING DERIVED FROM d-GLUCOSE
Authors: Nakamura Yushin , Saito Setsuo , Morita Yutaka 
Published: July 2006

Abstract
Rh-complex of 6S-cyano-5R-diphenylphosphino-3R,4S-O-isopropylidene-2-oxa-bicyclo[3.2.0]heptane showed the relatively high enantioselectivity (S-configuration) in the hydrogenation of α-acetamidocinnamic acid, whereas Rh-complex of the 6S-aminomethyl compound, the reduction product of the former, gave the reversed enantioselectivity (R-configuration) in the reaction.
SYNTHESIS OF PENTA-N,O-ACETYL-Dl-VALIENAMINE AND ITS RELATED BRANCHED-CHAIN UNSATURATED AMINOCYCLITOLS AND CYCLITOLS
Authors: Ogawa Seiichiro , Toyokuni Tatsushi , Suami Tetsuo 
Published: July 2006

Abstract
Penta-N,O-acetyl-Dl-valienamine, and its related branched-chain unsaturated aminocyclitols and cyclitols were synthesized from the dibromides derived from tri-O-acetyl-Dl-(1,3/2)-4-methylene-5-cyclohexene-1,2,3-triol.
A CONVENIENT SYNTHESIS OF (TRICHLOROMETHYL)CHLOROSILANES
Authors: Matsumoto Hideyuki , Ohkawa Kazuhiro , Nakano Taichi , Nagai Yoichiro 
Published: July 2006

Abstract
In the presence of a catalytic amount of triphenylphosphine, 1,1,2,2-tetrachloro-1,2-dimethyldisilane reacted smoothly under mild conditions with carbon tetrachloride to produce (trichloromethyl) methyldichlorosilane 1 in good yield. (Trichloromethyl)dimethylchlorosilane was also readily prepared by the triphenylphosphine-promoted transfer of the trichloromethyl group from 1 to dimethyldichlorosilane.
PREPARATION OF PERALKYLCYCLOPENTASILANES, [R2Si]5
Authors: Watanabe Hamao , Muraoka Tsutomu , Kohara Yasuhiro , Nagai Yoichiro 
Published: July 2006

Abstract
Peralkylcyclopentasilanes [R2Si]5 (where R=Et, Pr, Bu and i-Bu) were prepared by the reactions of corresponding dialkyldichlorosilanes (R2SiCl2) with lithium.
SYNTHESIS AND STEREOCHEMISTRY OF 3,6-EPOXY-5-HYDROXY-5,6-DIHYDRO-β-IONOL, A NOVEL FLAVOR CONSTITUENT OF SUIFU TABACCO
Authors: Kato Tetsuya , Kondo Hisao , Kitano Yukishige , Hata Go , Takagi Yoshikazu 
Published: July 2006

Abstract
(±)-3,6-Epoxy-5-hydroxy-5,6-dihydro-3-ionol was synthesized from β-ionone via 3,6-dihydroxy-α-ionone and its structure including the relative configurations was established as (±)-2β,5β-epoxy-2α-[3α-hydroxy-1(E)-butenyl]-1β,3,3-trimethylcyclohexan-1α-ol by X-ray analysis.
METHYL VIOLOGEN REDUCTION WITH WATER SOLUBLE METALLO-PORPHYRINS BY VISIBLE LIGHT IRRADIATION AND HYDROGEN EVOLUTION FROM WATER BY HYDROGENASE
Authors: Okura Ichiro , Takeuchi Makoto , Kim-Thuan Nguyen 
Published: July 2006

Abstract
The formation of the cation radical of methyl viologen was established when an aqueous metallo-porphyrin, methyl viologen and reducing agent was irradiated by visible light, and the activities of photosensitizers were compared. When hydrogenase was added to the system, hydrogen evolution was observed.
CROSS-COUPLING OF TERTIARY ALKYL GRIGNARD REAGENTS WITH β-BROMOSTYRENE CATALYZED BY DICHLORO[1,1′-BIS(DIPHENYLPHOSPHINO)FERROCENE]NICKEL(II)
Authors: Hayashi Tamio , Konishi Mitsuo , Yokota Kan-ichi , Kumada Makoto 
Published: July 2006

Abstract
Dichloro[1,1′-bis(diphenylphosphino)ferrocene]nickel(II) was found to be an effective catalyst for the cross-coupling of tert-butylmagnesium chloride with β-bromostyrene to give β-tert-butylstyrene selectively.
EFFICIENT CATALYSIS OF HETEROPOLY ACID FOR ALCOHOLYSIS OF EPOXIDE
Authors: Izumi Yusuke , Hayashi Kyoji 
Published: July 2006

Abstract
Heteropoly acid (HPA) was found to catalyze the alcoholysis of epoxide more efficiently than the conventional acid catalysts such as sulfuric acid, perchloric acid and p-toluenesulfonic acid, at 45°C in the homogeneous liquid phase. The reason for the high catalytic activity of HPA is also discussed.
PRESSURE-INDUCED PHASE TRANSITION IN 2-METHYLADAMANTANE AND 2-BROMODAMANTANE
Authors: Hara Kimihiko , Katou Yoshikazu , Osugi Jiro , Taniguchi Yoshihiro , Suzuki Keizo 
Published: July 2006

Abstract
Pressure-induced phase transitions were found in 2-methyladamantane and 2-bromoadamantane by X-ray studies at high pressures. Their transition pressures were 9 kbar and 0.5 kbar, respectively. The crystal structures of the low-pressure phases for both compounds and the high pressure phase of 2-methyladamantane were determined.
SYNTHESES OF 4-ALKYLINDOLES FROM 2-METHYL-5-NITROISOQUINOLINIUM IODIDE
Authors: Somei Masanori , Karasawa Yoshio , Kaneko Chikara 
Published: July 2006

Abstract
4-[N-Acetyl-N-methyl]aminomethylindole was prepared economically on a large scale from 2-methyl-5-nitroisoquinolinium iodide. Subsequent alkaline hydrolysis afforded 4-methyiaminomethylindole. Starting from these two compounds, various 3,4-di- and 4-substituted indoles were prepared including 4-formylindole, 4-[N,N-disubstituted]aminomethylindoles, 4-alkylindoles, and benz[cd]indoles. A novel nucleophilic substitution reaction of gramine derivatives by the catalysis of tri-n-butylphosphine was also reported.
THERMAL REARRANGEMENT OF α,β-UNSATURATED SULFINE
Authors: Karakasa Takayuki , Ohmura Haruo , Motoki Shinichi 
Published: July 2006

Abstract
The thermolysis of 2-arylmethylene-1-tetralinthione-S-oxide gave 2-arylcarbonyl-1 -tetralinthione: it is considered that the reaction probably proceeded through the intramolecular 1,5-dipolar cycloaddition of the tetralinthione-S-oxide.
REGIOSELECTIVE SYNTHESIS OF D-RING SUBSTITUTED BENZ[a]ANTHRACENES BY ONE-POT PHOTOCHEMICAL REACTION
Authors: Maruyama Kazuhiro , Tojo Masahiro , Iwamoto Hidetoshi , Otsuki Tetsuo 
Published: July 2006

Abstract
Benz[a]anthracene-7,12-diones containing methoxy group on the 8-, 9-, 10-, and/or 11-positions(D-ring) were synthesized regioselectively by one-pot photochemical reaction of 2-bromo-3-methoxy-1,4-naphthoquinone derivatives with 1,1-diphenylethylene.
REACTION OF BIS(8-QUINOLINOLATO)NITROSYLCOBALT WITH NITROGEN OXIDE
Authors: Miki Eiichi 
Published: July 2006

Abstract
Reaction of [Co (C9H6NO)2(NO)] (C9H6NO− = 8-quinolinolate ion) with a large excess of nitrogen oxide in dichloromethane gives [NO][Co(C9H6NO)2(NO3)(NO2)] with liberation of dinitrogen oxide at room temperature. Investigations using nitrogen-15 labelled compounds suggest that the reaction is *NO−(coordinated) + 8NO → *NO2−(coordinated) + NO3−(coordinated) + 3N2O + NO+.
A NEW AND CONVENIENT ROUTE TO THE AMIDES OF α-AMINO ACIDS AND α-HYDROXY ACIDS BY MEANS OF THE PALLADIUM CATALYZED FACILE CLEAVAGE OF 3-SUBSTITUTED-4-ARYLAZETIDIN-2-ONES
Authors: Ojima Iwao , Suga Shigemi , Abe Rumiko 
Published: July 2006

Abstract
3-Substituted-4-arylazetidin-2-ones were found to be cleaved selectively at the N–C4 bond by the hydrogenolysis on palladium catalyst to give the corresponding amides of α-amino acids or α-hydroxy acids in excellent yields.
THE CHARACTERISTIC OF γ-MANGANESE DIOXIDE ELECTRODE IN ACIDIC SOLUTIONS IN THE PRESENCE OF COMPLEXANES
Authors: Fujinaga Taitiro , Yoshimura Tadayosi 
Published: July 2006

Abstract
By using γ-manganese dioxide (MnO2) as an indicator electrode, the electrode-reaction of ethylenediaminetetraacetic acid (EDTA) and other complexanes was investigated. A characteristic cathodic peak of manganese dioxide which increases in the presence of complexanes was observed.
PREPARATION OF OPTICALLY ACTIVE MER ISOMERS OF BIS(METHYLIMINODIACETATO)COBALTATE(III) AND (METHYLIMINODIACETATO)(DIETHYLENETRIAMINE)COBALT(III) IONS
Authors: Koine Norio , Tanigaki Teiichi , Hidaka Jinsai , Shimura Yoichi 
Published: July 2006

Abstract
The preparation and optical resolution of a new complex, mer-[Co(mida)2]− (mida = methyliminodiacetate) were achieved together with the optical resolution of mer-[Co(mida)(dien)]+ (dien = diethylenetriamine). The d→d absorption and circular dichroism spectra, and some properties of these complexes are reported.
REVISED STRUCTURE OF CERIFERIC ACID
Authors: Naya Yoko , Miyamoto Fumiko , Kishida Keiko , Kusumi Takenori , Kakisawa Hiroshi , Nakanishi Koji 
Published: July 2006

Abstract
The structure of ceriferic acid, a scale insect sesterterpene secretion, has been revised from 10 to 5. Naturally occurring ceriferol has been correlated with ceriferic acid.
NEW OXOMOLYBDENUM(V) COMPLEXES OF TETRAPHENYLPORPHINE WITH UNIVALENT LIGANDS
Authors: Imamura Taira , Terui Masashi , Takahashi Yasuo , Numatatsu Takayuki , Fujimoto Masatoshi 
Published: July 2006

Abstract
New tetraphenylporphine complexes of oxomolybdenum(V), MoO(tpp)X(X = NCS and Br), were synthesized, and characterized by means of IR, ESR, and electronic spectra. The formation of a hyperoxide complex, MoO(tpp)(O2), in dichloromethane was confirmed.
CONFORMATIONAL ANALYSIS WITH LANTHANIDE SHIFT REAGENTS DIFFERENCES IN THE SOLUTION AND CRYSTAL STRUCTURE CONFORMATIONS OF A COMPOUND
Authors: Ammon Herman L , Mazzocchi Paul H , Liu Leslie 
Published: July 2006

Abstract
The solid and LSR-determined solution conformations of 2-benzyl-3-oxo-6-exo-(2,6-diiodo-4-methylphenoxy)-2-azabicyclo[2.2.1]heptane are substantially different. The “best” solution conformation contains a close I···H contact of 2.65 Å, in agreement with trends in the 1H chemical shifts in several similar compounds. Crystal structure data may not provide an accurate picture of the major solution conformer in cases where interconversion barriers are low.
REDUCTIVE COUPLING OF S-(2-PYRIDYL) ALIPHATIC THIOATES BY USE OF BIS(1,5-CYCLOOCTADIENE)NICKEL
Authors: Onaka Makoto , Matsuoka Yoshio , Mukaiyama Teruaki 
Published: July 2006

Abstract
S-(2-Pyridyl) aliphatic thioates are reductively dimerized to give α-diketones and α-hydroxy ketones on treatment with bis(1,5-cyclooctadiene)nickel at 40°C.
A NEW REARRANGEMENT OF SPIRO-3H-PYRAZOLES
Authors: Mataka Shuntaro , Takahashi Kazufumi , Ohshima Takeshi , Tashiro Masashi 
Published: July 2006

Abstract
The thermally labile spiro-3H-pyrazoles obtained by the reaction of diazoindenothiophenes with dimethyl acetylenedicarboxylate rearranged into the corresponding 3H-pyrazoles which are formed via Van Alphen–Hüttel rearrangement followed by the migration of an ester group.
PHOTOLYTIC α-ELIMINATION OF ORGANIC HALIDES FROM ORGANOTELLURIUM(IV) HALIDES
Authors: Uemura Sakae , Fukuzawa Shin-ichi 
Published: July 2006

Abstract
Irradiation of organotellurium(IV) halides in benzene affords the corresponding organic halide by α-elimination, the carbon–halogen bond being formed at ipso-position and in some case retentively. The reaction is not affected by the presence or absence of oxygen and t-butoxy radical.
CYCLOADDITION REACTION OF A NEW PERIPHERAL AZOMETHINE YLID TO SYMMETRICALLY SUBSTITUTED OLEFIN
Authors: Kanemasa Shuji , Kobira Seigo , Kajigaeshi Shoji 
Published: July 2006

Abstract
An unusual azomethine ylid 1,3-dipole was generated on the periphery of pyrido[1,2,3-de]quinoxaline ring. This peripheral ylid, anhydro 3H-pyrido[1,2,3-de]quinoxalinium hydroxide, reacted stereoselectively with electron-deficient cis olefins such as dimethyl maleate and N-substituted maleimides giving endo [4+2] cycloadducts as single products. With such a trans olefin as dimethyl fumarate, a mixture of two kinds of the [4+2] cycloadducts, 1-exo-2-endo- and 1-endo-2-exo cycloadduct, was formed. These cyclo-addition reactions have possibly proceeded in a concerted manner.