bluuebunny/crossref_metadata_2025_split huggingface dataset:
SYNTHESIS OF 1,3-DIIMINOISOINDOLINES FROM 2-CYANOBENZALDEHYDE. REACTION OF N-(2-CYANOBENZYLIDENE)ANILINES WITH ELEMENTAL SULFUR IN LIQUID AMMONIA AND AMINES
Authors: Sato Ryu , Nakayama Mikiya , Yuzawa Yoshiki , Goto Takehiko , Saito Minoru 
Published: July 2006

Abstract
Various 1,3-diimonoisoindolines were obtained by treating N-(2-cyanobenzylidene)anilines with elemental sulfur in liquid ammonia and amines. A novel route to isoindoline from 2-cyanobenzaldehyde was developed.
ZEOLITE-CuNaY CATALYZED DECOMPOSITION OF ARYLDIAZOMETHANE
Authors: Onaka Makoto , Kita Hiroshi , Izumi Yusuke 
Published: July 2006

Abstract
Decomposition of aryldiazomethanes is catalyzed by copper ion-exchanged Y-type zeolite to afford cis-1,2-diarylethylenes in high selectivity. The catalytic activity and selectivity are found to be affected by the exchange level of copper ions in zeolite and the solvent used.
ESTIMATION OF EFFECTIVE DIELECTRIC CONSTANTS OF SEVERAL AMPHIPHILIC MEDIA FOR 8-METHOXYPSORALEN
Authors: Sasaki Masako , Sakata Toshibumi , Sukigara Mitsunori 
Published: July 2006

Abstract
The effective dielectric constants of SDS micelle, DMPC liposome and DNA for 8-methoxypsoralen were estimated to be 60,32, and 70 respectively by fluorophotometry.
THE CRYSTAL STRUCTURE OF [BEDT-TTF][Ni(dmit)2]. A NEW ROUTE TO DESIGN OF ORGANIC CONDUCTORS
Authors: Kobayashi Hayao , Kato Reizo , Kobayashi Akiko , Sasaki Yukiyoshi 
Published: July 2006

Abstract
In the crystal of the charge transfer complex, [BEDT-TTF][Ni(dmit)2], BEDT-TTF and Ni(dmit)2 molecules are loosely stacked to form mixed-stacking columns. However, the intermolecular transverse interaction indicates that the BEDT-TTF molecules form a side-by-side chain. [BEDT-TTF][Ni(dmit)2] suggests a new route to design of organic metals, despite of its semiconductive behavior.
CONVERSION OF Rh(III) SPECIES ON Rh–Y ZEOLITE DURING EXPOSURE TO CARBON MONOXIDE REVEALED BY TPD TECHNIQUE
Authors: Takahashi Nobuo , Mijin Akihiko , Miyauchi Mitomu , Sato Akira 
Published: July 2006

Abstract
On the exposure of fresh Rh–Y zeolite to CO, the formation of the rhodium species responsible for the TPD peak of CO at 473–500 K, which was followed by the conversion into the second type rhodium species responsible for the peak at 563–583 K, was observed.
ADSORPTION AND DESORPTION OF NITROGEN OXIDE BY IRON(II)-CHELATE RESIN COMPLEXES
Authors: Hirai Hidefumi , Toshima Naoki , Asanuma Hiroyuki 
Published: July 2006

Abstract
Iron(II) ions (14.7 mmol) immobilized on chelate resin (7.53 g) adsorbed 78% of total nitrogen oxide contained in 6 dm3 of nitrogen at the concentration of 1000 ppm at 25 °C. The nitrogen oxide was released rapidly by 83% of that adsorbed by raising the temperature from 25 °C to 80 °C. Adsorption and desorption cycles on this adsorbent could be performed repeatedly without deterioration.
MONOTHIOACETALIZATION OF ACETALS USING DIETHYLALUMINIUM THIOPHENOXIDE
Authors: Masaki Yukio , Serizawa Yuzuru , Kaji Kenji 
Published: July 2006

Abstract
Reactions of diethylaluminium thiophenoxide (Et2AlSPh) with acetals of several types, in which acyclic, cyclic, and bicyclic ones are involved, were examined in comparison with the known reaction using thiophenol in the presence of Lewis acid and found to provide a new and efficient method for preparation of monothioacetals.
PHOTOCYCLOADDITION REACTION OF 3-ARYL-2-ISOXAZOLINES WITH INDENE. GENERATION OF [2+2] CYCLOADDUCT STEREOISOMERS
Authors: Kawamura Yasuhiko , Kumagai Tsutomu , Murai Toshio 
Published: July 2006

Abstract
2-Isoxazolines with electron-withdrawing substituents on the 3-aryl moiety (p-cyanophenyl, p-methoxycarbonylphenyl) gave upon irradiation in indene a mixture of syn and anti cycloadducts regiospecifically toward the C=N double bond via their exciplex intermediate.
CHEMOSELECTIVE OXIDATION OF BENZYLIC ALCOHOLS BY FREMY’S SALT
Authors: Morey Jerónimo , Dzielenziak Adam , Saa José Manuel 
Published: July 2006

Abstract
A promising chemoselective oxidation of benzylic alcohols has been achieved by using Fremy’s salt under phase-transfer conditions. Allylic and saturated alcohols were recovered unchanged.
DIRECT SYNTHESIS OF ETHYLIDENE DIACETATE FROM METHYL ACETATE AND SYNTHESIS GAS BY MIXED RHODIUM–PALLADIUM CATALYST
Authors: Kudo Kiyoshi , Mori Sadayuki , Sugita Nobuyuki 
Published: July 2006

Abstract
The direct hydrocarbonylation of methyl acetate to ethylidene diacetate by use of rhodium–palladium mixed catalysts with iodide and basic promoters in acetic acid solution was investigated at 160 °C under 200 kg/cm2 of synthesis gas(H2/CO=1/1). Conversion of methyl acetate up to 93% and yield to ethylidene diacetate as high as 68% were obtained.
PREPARATION AND STRUCTURE OF THE RUTHENYL COMPLEX, trans-[RuCl(O)(py)4]+
Authors: Yukawa Yasuhiko , Aoyagi Kimitake , Kurihara Mieko , Shirai Kuniko , Shimizu Kunio , Mukaida Masao , Takeuchi Toshio , Kakihana Hidetake 
Published: July 2006

Abstract
trans-[RuCl(O)(py)4]+ with RuIV=O (ruthenyl) unit was obtained by the reaction of trans-[RuCl(NO)(py)4]2+ with NaClO. The remarkably long bond distance of Ru–O (1.862(8) Å), compared with those of known mono-oxo complexes, is indicative of its facile reactivity as an oxygen transfer agent.
RESONANCE RAMAN SPECTRA OF EXCITED TRIPLET-STATES OF β-CAROTENE ISOMERS
Authors: Teraoka Junji , Hashimoto Hideki , Matsudaira Shinji , Koyama Yasushi 
Published: July 2006

Abstract
The resonance Raman spectra of the electronically excited triplet-state of β-carotene, which was produced from the all-trans, 9-cis, 13-cis, and 15-cis isomers by means of flash-photolysis using a sensitizer, were recorded. They were very similar to one another. Isomerization of each isomer under the condition of Raman measurements was followed by HPLC. Isomerization from the cis isomers to the all-trans isomer was predominant. The results suggested that the isomers should have a common configuration in the lowest triplet-state.
SYNTHESIS OF A (±)-3β-TRINORTAXANE DERIVATIVE
Authors: Kojima Tsutomu , Inouye Yoshinobu , Kakisawa Hiroshi 
Published: July 2006

Abstract
Intramolecular photo[2+2]cycloaddition of 4-(3-methyl-2-cyclohexenyl)methoxybicyclo [3.3.1] non-3-en-2-one, followed by oxidation with RuO4, and by alkaline hydrolysis, gave 8-methyltricyclo[9.3.1.03,8] pentadecane-2,10-dione-4-carboxylic acid, a (±)-3β-trinortaxane derivative.
STEREOCHEMICAL FEATURES OF CYCLOADDITION OF HETEROAROMATIC N-YLIDES. SELECTIVE PARTICIPATION OF THE ANTI AND SYN YLIDES
Authors: Tsuge Otohiko , Kanemasa Shuji , Takenaka Shigeori 
Published: July 2006

Abstract
In the cycloaddition of heteroaromatic N-ylides to symmetrically substituted trans olefins, the anti ylide exclusively participates if the ylide is carbonyl-stabilized, while the syn ylide does if it has a substituent of non-carbonyl type. The cycloadducts isomerize into thermodynamically more stable isomers through a retro reaction.
ASYMMETRIC MICHAEL ADDITION OF THIOPHENOL TO MALEIC ACID ESTERS
Authors: Yamashita Hiroyuki , Mukaiyama Teruaki 
Published: July 2006

Abstract
(S)-(−)-Diisopropyl phenylthiosuccinate (81% optical purity) is prepared in 95% yield by the asymmetric Michael addition of thiophenol to diisopropyl maleate in the presence of a catalytic amount of cinchonine. The succinate thus prepared is transformed into (R)-(+)-3,4-epoxy-1-butanol without racemization.
FORMATION OP PERFLUORO(N-ALKYL LACTAMS) BY THE REACTION OF PERFLUORO(N-ALKYL CYCLIC AMINES) WITH FUMING SULFURIC ACID
Authors: Hayashi Eiji , Abe Takashi , Nagase Shunji 
Published: July 2006

Abstract
Perfluoro(N-alkyl lactams) have been obtained in high yields by the reaction of perfluoro(N-alkyl cyclic amines) with fuming sulfuric acid.
NEW PREPARATION METHODS OF CHLOROPHYLL/WATER-SOLUBLE MACROMOLECULAR COMPLEXES
Authors: Inamura Isamu , Ochiai Hideo , Toki Kenzi , Ishine Yuzou , Araki Takeo 
Published: July 2006

Abstract
Three new methods for preparing the chlorophyll/water-soluble macromolecular complexes are described herein. Each method has been found to possess notable characteristic advantages as compared with the former method previously reported by us: (1) operation is very quick and easy, (2) the complexes containing a variety of Chl-a species can be obtained, (3) the Chl-a/polymer ratio can be raised, (4) reproducibility is good, and etc.
STERIC EFFECTS OF CHIRAL LIGANDS IN A NEW TYPE OF ALDOL CONDENSATIONS CATALYZED BY ZINC(II) COMPLEXES OF α-AMINO ACID ESTERS
Authors: Nakagawa Masaji , Nakao Hiroyuki , Watanabe Ken-ichi 
Published: July 2006

Abstract
The aldol condensations of p-nitrobenzaldehyde with acetone have been found to be catalyzed by Zn2+ complexes of α-amino acid esters under mild and neutral conditions to afford enantiomeric excess aldol type product along with some of the dehydrated product. The complexes with ligands containing benzene ring such as esters of Phe, Tyr, and Trp are much more effective both on catalytic activity and asymmetric induction.
MULTIELECTRON REDUCTION OF ALKYLAZIDE BY A (n-Bu4N)3 [Mo2Fe6S8 (SPh)9]-MODIFIED GLASSY CARBON ELECTRODE
Authors: Kuwabata Susumu , Hozumi Yoshiyuki , Tanaka Koji , Tanaka Toshio 
Published: July 2006

Abstract
A multielectron reduction of RN3 (R=CH3, HOC2H4) giving NH3, N2H4, and RNH2 has been succeeded for the first time by the electrochemically reduced species of (n-Bu4N)3[Mo2Fe6S8(SPh)9] not only dissolved in MeOH/THF (1:1 v/v) containing CH3N3 but also modified on a glassy carbon electrode in water containing HOC2H4N3. The turnover number for the formation of NH3 in the latter system reached more than 1×104 in 2 h, based on the Mo–Fe cluster.
ENANTIOSELECTIVE SYNTHESIS OF A NOVEL TYPE OF OPTICALLY ACTIVE OCTAHEDRAL COMPLEXES, trans-[Co(AB)2(X)(Y)]. THE ESSENTIAL ROLE OF AXIAL LIGATION FOR Co–C σ-BOND FORMATION IN THE REACTION OF A Co(I) COMPLEX WITH OLEFINS
Authors: Ohgo Yoshiaki , Takeuchi Seiji 
Published: July 2006

Abstract
C(+)578− and A(−)578-(XCH2CH2)(PPD)2(pyridine)Co [X = CN or COOCH3; PPD = (E,E)-1-phenyl-1,2-propanedione dioxime mono anion] have been synthesized by the enantioselective alkylation of [CoI(PPD)2]− with H2C=CHX in the presence of chiral amines, demonstrating the essential role of axial ligation for Co–C σ-bond formation.
SELECTIVE ADSORPTION OF Ga(III) AND In(III) USING POLYSTYRENE RESINS WITH FUNCTIONAL GROUP HAVING BIS(CARBOXYMETHYL)AMINO MOIETY
Authors: Suzuki Toshishige M , Yokoyama Toshiro , Matsunaga Hideyuki , Kimura Tetsuo 
Published: July 2006

Abstract
Adsorption characteristics of polystyrene resins containing bis (carboxymethyl)amino moiety for group IIIb ions have been studied. The selectivity order toward the present chelating resins is In(III)&gt;Ga(III))&gt;&gt;Al(III) . Selective recovery of Ga(III) and/or In(III) from the acidic solution of Al(III) has been demonstrated by column operation using the present chelating resins.
REACTION OF SPIRO [CYCLOHEXANE-1,3′-3H-INDOLE] WITH GRIGNARD REAGENTS IN THE PRESENCE OF CUPROUS CHLORIDE
Authors: Rodriguez Gonzalo , Benito Yolanda , Temprano Fernando 
Published: July 2006

Abstract
Attack of MeMgl and PhMgBr in toluene on spiro[cyclohexane-1,3′-3H-indole] (1) in the presence of Cu2-Cl2 gives 2′-substituted spiro[cyclohexane-1,3′-indolines] in quantitative yields. Also, attack of PhCH2CH2MgBr on 1 in the presence of Cu2Cl2 afforded 2′-phenethyl, 2′-H and 2′-benzyl (or 2′-p-xylyl) derivatives in toluene (or p-xylene) as solvent.
FREE RADICAL CHAIN OXIDATION OF ERYTHROCYTE GHOST MEMBRANES BY OXYGEN
Authors: Yamamoto Yorihiro , Niki Etsuo , Kamiya Yoshio 
Published: July 2006

Abstract
The oxidation of human and rat erythrocyte ghost membranes has been performed at 37 °C in the presence of radical initiator. It was found that erythrocyte membranes are oxidized by free radical chain mechanism by oxygen with long kinetic chain length of 10 to 100. This is the first clear evidence that shows the radical chain oxidation of biological membranes.
PREPARATION AND ALKYLATION OF CAPPED HYDROPHOBIC VITAMIN B12
Authors: Murakami Yukito , Hisaeda Yoshio , Ohno Teruhisa , Ozaki Toshiaki 
Published: July 2006

Abstract
The pentamethyl cobyrinate complex capped with a fragment involving the imidazolyl moiety was prepared and characterized by spectroscopic means. Its alkylation reactions with alkyl bromides were carried out in organic solvents and compared with those of other hydrophobic vitamin B12’s from the kinetic viewpoint.
DEGRADATION REACTION OF α-d-GALACTOPYRANURONIC ACID IN ACETIC ANHYDRIDE-BASE SYSTEM
Authors: Tajima Kiyohiko 
Published: July 2006

Abstract
α-d-Galactopyranuronic acid was converted to 1,2,3-tri-O-acetyl-4-deoxy-β-l-threo-4-hexenopyranuronic acid (3) and 3-acetoxy-6-(diacetoxymethyl)-2H-pyran-2-one respectively by treatment with acetic anhydride-4-(dimethylamino)pyridine or acetic anhydride-acetic acid-pyridine. Further degradation of 3 in acetic anhydride-triethylamine gave comanic acid.
PHOTOCHEMISTRY OF DI(9-ANTHRYL)DIMETHYLSILANE AND -GERMANE
Authors: Sakurai Hideki , Sakamoto Kenkichi , Nakamura Akihiro , Kira Mitsuo 
Published: July 2006

Abstract
By irradiation, both di(9-anthryl)dimethylsilane and -germane afforded a new type of [4+2] intramolecular addition products that underwent quantitative cycloreversion by thermolysis. The photoproduct from the former was converted to a novel naphthotriptycene derivative.
SPECTROSCOPIC STUDIES ON THE SURFACE STRUCTURES OF RUTHENIUM CATALYSTS DERIVED FROM Ru3(CO)12/γ-Al2O3 OR SiO2
Authors: Asakura Kiyotaka , Yamada Makoto , Iwasawa Yasuhiro , Kuroda Haruo 
Published: July 2006

Abstract
The surface structures of supported Ru catalysts derived from Ru3(CO)12/γ-Al2O3 and Ru3(CO)12/SiO2 during the preparation procedures were studied mainly by EXAFS (Extended X-ray Absorption Fine Structure) analyses and also by IR and UV/VIS Diffuse Reflectance spectroscopies. A direct evidence was found for bonding feature in metal-support interaction, which explains the large difference in surface structures and catalysis of the Ru species supported on γ-Al2O3 and SiO2.
PHOTOELECTROCHEMICAL REDUCTION OF CARBON MONOXIDE ON IRON(H) TETRAPHENYLPORPHYRIN-COATED p-TYPE GaP ELECTRODES
Authors: Yoneyama Hiroshi , Wakamoto Koichi , Hatanaka Nobuyuki , Tamura Hideo 
Published: July 2006

Abstract
Reduction of CO to methanol was achieved with the current efficiency of ca. 10% at p-type GaP photocathodes coated with heat-treated 5,10,15,20-tetraphenylporphyrinatoiron (II).
A FACILE SYNTHESIS OF 6-OXO-PGF1α AND 6-OXO-PGE1
Authors: Nokami Junzo , Ono Toshio , Hiraga Junji , Wakabayashi Shoji 
Published: July 2006

Abstract
6-Oxo-PGF1α and 6-oxo-PGE1 were synthesized from 7-t-butyldimethylsililoxy-6-[(1E)-3-t-butyldimethylsililoxy-1-octenyl]-2-oxabicyclo[3.3.0]octan-2-one (1) and 7-tetrahydropyranyloxy-6-[(1E)-3-tetrahydropyranyloxy-1-octenyl]-2-oxabicyclo[3.3.0]octan-2-one (1’) via C5 unit elongation to the lactone carbonyl of 1 and 1’ respectively. The C5 unit was introduced step by step (C1 + C4) by means of the conversion of 1 and 1’ to the corresponding β-keto esters and then the alkylation of the active methylene of them.
THE PRINS-TYPE REACTIONS OF MONO- AND 1,1-DISUBSTITUTED ALKENES WITH TRICHLOROACETONITRILE IN THE PRESENCE OF BORON TRICHLORIDE
Authors: Hamana Hiroshi , Sugasawa Tsutomu 
Published: July 2006

Abstract
Boron trichloride was found to be a useful Lewis acid for the Prins-type reaction of alkenes with electron-deficient nitriles. In its presence, monosubstituted alkenes react with trichloroacetonitrile, giving dichloroazirine derivatives in high yields. Further exposure of the azirine derivative to boron trichloride at room temperature afforded α,α,γ-trichloroalkylnitrile. The Prins-type acylations of 1,1-disubstituted alkenes with trichloroacetonitrile are also described.
STEREOSELECTIVE SYNTHESIS OF C/D/E RINGS IN STEROIDS CONTAINING E (LACTONE) RING. SYNTHESIS OF (±)-1-(1′-HYDROXYETHYL)-7,7a-DIHYDRO-5(6H)-INDANONE-7a-CARBOXYLIC ACID-7a,1′-LACTONE
Authors: Nakayama Mitsuru , Tanimori Shinji , Hashio Michihisa , Mitani Yoshihiko 
Published: July 2006

Abstract
The title compound, a potential intermediate for the synthesis of steroids containing E (lactone) ring, was synthesized stereoselectively using the acid catalyzed homoconjugate addition of methanol to methyl 6-methyl-2-oxobicyclo[3.1.0]hexane-1-carboxylate in four steps.
C–O BOND CLEAVAGE IN ALLYL PHENYL ETHER INDUCED BY THE PHOTOREACTION OF A HYDRIDOCOBALT COMPLEX
Authors: Oishi Shigero , Kihara Noriko , Hosaka Akeri 
Published: July 2006

Abstract
C–O bond cleavage in allyl phenyl ether giving propylene has been found to proceed via an identical intermediate with that for catalytic double-bond migration giving propenyl phenyl ether by means of laser flash photolysis and product analysis for continuous irradiation.
STEREOCHEMISTRY OF THERMAL [2+2] CYCLOADDITION OF DISILENE WITH ACETYLENE
Authors: Nakadaira Yasuhiro , Sato Ryuji , Sakurai Hideki 
Published: July 2006

Abstract
The reaction of diphenylacetylene with thermally generated cis- and trans-1,2-dimethyl-1,2-diphenyldisilene at 300 °C gave a mixture of the [2+2] cycloadducts in a stereoselective but not completely stereospecific manner. A stepwise radical mechanism is suggested.
CHELATE RESIN-IMMOBILIZED IRON(II) COMPLEXES AS NEW NITROGEN OXIDE ADSORBENTS
Authors: Hirai Hidefumi , Toshima Naoki , Asanuma Hiroyuki 
Published: July 2006

Abstract
Iron(II) ions were immobilized on the chelate resin by treating crosslinked polystyrene beads involving iminodiacetic acid moieties with iron(II) sulfate in water. The resin-immobilized Fe(II) complexes, especially those prepared with fine beads, can adsorb nitrogen oxide rapidly in water from nitrogen atmosphere containing 1000 ppm nitrogen oxide.
A SHORT SYNTHESIS OF 7-OXO-4-THIA-1-AZABICYCLO[3.2.0]HEPTANE. A BASIC SKELETON OF PENICILLIN-TYPE β-LACTAMS
Authors: Chiba Takuo , Sakaki Jun-ichi , Takahashi Takumi , Kaneko Chikara 
Published: July 2006

Abstract
7-Oxo-4-thia-1-azabicyclo[3.2.0]heptane, a basic skeleton of penicillins, was synthesized for the first time from ethyl propiolate in three steps. The key step was the formation of β-lactam ring of thiazolidine-2-acetic acid by the use of Mukaiyama-Ohno’s method.
CATALYTIC OXIDATION OF DIENONES WITH TPPMn(III)Cl-PhIO SYSTEM
Authors: Takata Toshikazu , Tajima Rieko , Ando Wataru 
Published: July 2006

Abstract
Several dienones were oxidized with iodosylbenzene (PhIO) in the presence of catalytic amount of tetraphenylporphinatomanganese(III) chloride (TPPMn(III)Cl), affording corresponding epoxides and pyrons.
ORGANIC TELLURIDE-MEDIATED REACTION OF TOSYL AZIDE WITH CARBONYL COMPOUNDS
Authors: Suzuki Hitomi , Takeda Syoko , Hanazaki Yasuaki 
Published: July 2006

Abstract
Organic telluride induces the reaction of tosyl azide with aldehydes to afford the corresponding N-tosylimines in various yields. Tellurilimine has been suggested as a probable intermediate.
A FACILE SYNTHESIS OF METHYL 4,6-DIDEOXY-3-c-METHYL-4-METHYLAMINO-α-L-MANNOPYRANOSlDE (SIBIROSAMINIDE)
Authors: Yoshimura Juji , Sato Ken-ichi , Singh Rhiddi Bir 
Published: July 2006

Abstract
The title branched-chain sugar obtained by methanolysis of sibiromycin was easily synthesized from L-rhamnose through eight-step conversions.
IN-SITU DETERMINATION OF CHLORIDE IONS IN FRESH CONCRETE BY VOLTAMMETRIC SENSORS
Authors: Yamada Akifumi , Hodouchi Kazunori , Otsuga Nozomu , Ueda Kazuyoshi , Hashida Choichi 
Published: July 2006

Abstract
The voltammetric sensor was applied to the analysis of chloride content in sea sand and fresh concrete samples. The oxidation and reduction currents at the silver electrode were monitored as a function of the time. Chloride recovery was found to be good from fresh concrete.
DIRECT DETERMINATION OF CATION DISORDER IN MgAl2O4 SPINEL BY HIGH-RESOLUTION 27Al MAGIC-ANGLE-SPINNING NMR SPECTROSCOPY
Authors: Gobbi G C , Christoffersen R , Otten M T , Miner B , Buseck P R , Kennedy G J , Fyfe C A 
Published: July 2006

Abstract
27Al MAS NMR is shown to be a valuable tool in probing the coordination of aluminum in MgAl2O4 spinels, enabling the extent of Mg/Al order in the structure to be determined directly. From the relative intensities of the NMR peaks, assigned to octahedrally and tetrahedrally coordinated aluminum, the inversion parameter, i, was calculated to be 0.36±0.03 for a MgAl2O4 spinel synthesized at 1400 °C, and 0.12±0.06 for a natural spinel.
ZEOLITE-CATALYZED RING-OPENING OF EPOXIDES WITH AMINES
Authors: Onaka Makoto , Kawai Motomitsu , Izumi Yusuke 
Published: July 2006

Abstract
The ring-opening of unsymmetrical epoxides with amines has been investigated using zeolite as a catalyst. Moderately acidic and basic zeolite shows higher catalytic activity and regioselectivity compared to strongly acidic or basic zeolite. The cooperative function of acid and base sites of zeolite was found to be essential for effective catalysis.
STUDIES ON ALKALINE EARTH SULFITES. VII. HYDROGEN BONDING AND THE LOCATION OF HYDROGEN ATOMS IN THE CRYSTAL STRUCTURE OF CaSO3·4H2O AND Ca3(SO3)2SO4·12H2O
Authors: Zangen Mendel , Cohen Abraham 
Published: July 2006

Abstract
The location of the hydrogen atoms in the crystal structure of CaSO3·4H2O and Ca3(SO3)2SO4·12H2O was calculated using structural considerations. The results were confirmed by the agreement in the intensities of the X-ray powder diffraction lines between the calculated and the measured patterns. The orientation of the water molecules is such as to allow maximal hydrogen bonding of all oxygens belonging to SO32− or SO42− groups. Also, the coordination of the caatoms is shown to be eight and not six as previously reported.
CHEMILUMINESCENCE METHOD FOR SELECTIVE DETERMINATION OF IRON(II) AND CHROMIUM(III) WITH SINGLE REACTION SYSTEM
Authors: Yamada Masaaki , Sudo Atsuko , Suzuki Shigetaka 
Published: July 2006

Abstract
A new chemiluminescence system, brilliant sulfoflavine-hydrogen peroxide-sodium hydroxide-acetonitrile, is described for continuous flow analysis for Fe(II) and Cr(III). This permits highly selective determination with detection limits of 1×10−9M for Fe(II) and 3×10−8M for Cr(III).
X-RAY STRUCTURAL ANALYSIS OF MOLTEN LiF–KF EQUIMOLAR MIXTURE
Authors: Igarashi Kazuo , Murofushi Mitsuhisa , Iwadate Yasuhiko , Mochinaga Junichi , Ohno Hideo 
Published: July 2006

Abstract
The structure of molten LiF–KF equimolar mixture at 545 °C was studied by X-ray diffraction analysis. From the analysis of RDF, the nearest neighbour distance and coordination number of Li+–F− pair in the mixture were found to be 1.85 Å and 3.0, respectively.
COUPLING REACTION BETWEEN METHYLPROPIONATE AND METHANOL TO FORM METHYLMETHACRYLATE OVER METAL ION-CONTAINED MAGNESIUM OXIDE CATALYSTS
Authors: Ueda Wataru , Kurokawa Hideki , Moro-Oka Yoshihiko , Ikawa Tsuneo 
Published: July 2006

Abstract
Solid-base catalyst, MgO modified by metal ion promoted the cross-coupling reaction between methylpropionate and methanol to give methylmethacrylate. 65% selectivity to methylmethacrylate was attained by using 16.7 wt% Mn–MgO catalyst at 400 °C.
SELECTIVE HYPERFILTRATION OF HEAVY METAL IONS. ION-ASSOCIATION SORPTION AND PERMEATION OF METAL COMPLEXES ON CELLULOSE ACETATE MEMBRANES
Authors: Hayashita Takashi , Hamada Motohiro , Takagi Makoto 
Published: July 2006

Abstract
Various metal thiocyanate complexes in aqueous solution were found to be efficiently sorbed on cellulose acetate (CA) polymers. On the basis of this behavior, a new hyperfiltration process–a selective sorption to the membrane and a solvent flow-coupled permeation of metal complex species–was proposed for the separation of heavy metal ions in solution.
PHASE TRANSITION-LIKE PHENOMENON OBSERVED FOR “PSEUDO-LIQUID PHASE” OF HETEROPOLY ACID CATALYSTS
Authors: Takahashi Kazuteru , Okuhara Toshio , Misono Makoto 
Published: July 2006

Abstract
We found for dehydration of 2-propanol over H3pw12O40 at 80–100 °C that there were at least two pseudo-liquid phases which differed in the amount of alcohol absorbed and the catalytic activity. The transition between the two phases proceeded nearly reversibly depending on the temperature and pressure.