bluuebunny/crossref_metadata_2025_split huggingface dataset:
A CONVENIENT CONVERSION OF ALDOXIMES TO NITRILES UNDER PHASE-TRANSFER CONDITIONS
Authors: Shinozaki Hiraku , Imaizumi Mari , Tajima Moritaka 
Published: July 2006

Abstract
A variety of aldoximes were converted into the corresponding nitriles by using carbon disulfide as dehydration reagent under phase-transfer conditions. One-pot syntheses of nitriles from aldehydes are also described.
AN ASYMMETRIC SYNTHESIS OF α-BENZYLOXY ALDEHYDES HAVING A CHIRAL TERTIARY CENTER—AN APPLICATION TO THE ASYMMETRIC SYNTHESIS OF exo-(+)-BREVICOMIN—
Authors: Asami Masatoshi , Mukaiyama Teruaki 
Published: July 2006

Abstract
α-Benzyloxy aldehydes having a chiral tertiary center at α-carbon atom are synthesized in high enantiomeric excess by successive treatment of 2-methoxycarbonyl-3-phenyl-1,3-diazabicyclo[3.3.0]octane with diisobutylaluminum hydride (DIBAL-H) and Grignard reagents. The asymmetric reaction is applied to the total synthesis of exo-(+)-brevicomin.
EFFECTS OF VARIOUS PRETREATMENTS OF THE Rh–Y ZEOLITE ON THE CATALYTIC ACTIVITY FOR ETHYLENE HYDROFORMYLATION UNDER ATMOSPHERIC PRESSURE
Authors: Takahashi Nobuo , Hasegawa Shuichi , Hanada Norio , Kobayashi Masayoshi 
Published: July 2006

Abstract
The active species for ethylene hydroformylation formed in the Y zeolite are extremely stable under the reaction conditions and the steady activity lasts more than one month. The catalytic activity is remarkably affected by the pretreatment of the catalyst; the He–H2 pretreatment at 338–453 K enhances the activity while the He–CO or He–CO–C2H4 pretreatment at 400 K reduces it.
CRYSTAL STRUCTURE AND ELECTRICAL CONDUCTIVITY OF (Et4N)0.5[Ni(dmit)2]
Authors: Kato Reizo , Mori Takehiko , Kobayashi Akiko , Sasaki Yukiyoshi , Kobayashi Hayao 
Published: July 2006

Abstract
The crystal of (Et4N)0.5[Ni(dmit)2] belongs to triclinic system (dmit: isotrithionedithiolate). In the crystal, face-to-face stacking and side-by-side arrangement of Ni(dmit)2 molecules form the two-dimensional S···S networks, which are weakly connected in the third direction by thioketone sulfur atoms in the isotrithione ring. The electrical conductivity measurements show that (Et4N)0.5[Ni(dmit)2] is a semiconductor with small anisotropy.
ASSOCIATION AND REACTIVITY OF AMPHIPHILIC FLAVINS. 8-ALKYL MERCAPTOFLAVINS AND THE CORRESPONDING BIS-FLAVINS IN AQUEOUS SOLUTION
Authors: Yano Yumihiko , Ohya Eiichi , Kuwabara Yoshinori 
Published: July 2006

Abstract
It was found that 8-octyl mercaptoflavin forms a dimer in aqueous solution, and the absorption spectrum is quite similar to that of the corresponding bis-flavin linked by -(CH2)3- at 10,10′-positions of the isoalloxazine rings. The association mode and the reactivity for oxidation of N-benzyl-1,4-dihydronicotinamide(BNAH) are discussed.
THE DYNAMIC STRUCTURE OF THE POLAR-GROUP OF CARDIOLIPIN IN E.COLI PHOSPHOLIPID BILAYER AS MONITORED BY 2H-NMR
Authors: Yoshikawa Wataru , Akutsu Hideo , Kyogoku Yoshimasa , Akamatsu Yuzuru 
Published: July 2006

Abstract
The glycerol part of E.coli phospholipid was specifically deuterated by supplying 2H5-glycerol in growth media of glycerol-requiring auxotroph. The 2H-spectra of cardiolipin were obtained for dispersion of the purified deuterated cardiolipin mixed with non-deuterated other components. The structure of the whole polar region of cardiolipin in the lipid bilayer appeared to be dynamically symmetric, and quite rigid.
STUDIES ON ALKALINE EARTH SULFITES - V. STRUCTURE AND STABILITY OF THE NEW COMPOUND Ca3(SO3)2SO4·12H2O AND ITS SOLID SOLUTION IN CALCIUM SULFITE TETRAHYDRATE
Authors: Cohen Abraham , Zangen Mendel 
Published: July 2006

Abstract
The hitherto unknown double-salt Ca3(SO3)2SO4·12H2O and its solid solution in CaSO3·4H2O are reported. The new salts were prepared from aqueous solutions at 3–5 °C and studied by chemical analysis, thermal analysis and X-ray powder diffraction. Chemical compositions, dehydration temperatures, calculated and measured X-ray diffraction patterns and lattice parameters are presented and discussed. The crystallographic structure of the double-salt is very similar to that of CaSO3·4H2O, but the thermal stability of the former is higher.
INDIRECT ELECTROOXIDATION OF N-PROTECTED AMINES TO AMIDES WITH A DOUBLE MEDIATORY SYSTEM CONSISTING OF RuO4, AND Cl+
Authors: Torii Sigeru , Inokuchi Tsutomu , Yukawa Takao 
Published: July 2006

Abstract
Indirect electrooxidative conversion of N-protected aliphatic amines into the corresponding amides with RuO4, in a saturated NaCl-acetone system proceeds in excellent yields.
PENTENE FORMATION FROM PROPIONALDEHYDE ADSORBED ON Rh–Y ZEOLITE
Authors: Takahashi Nobuo , Sato Yoshio , Kobayashi Masayoshi 
Published: July 2006

Abstract
Pentene formation is observed during desorption of propionaldehyde from Rh–Y zeolite into a helium stream, while neither Na–Y zeolite nor H–Na–Y zeolite is effective for pentene formation.
TRANSPORT OF CARBON MONOXIDE FACILITATED BY A CuI–TETRAETHYLENEPENTAMINE SYSTEM
Authors: Kawakami Mitsuyasu , Nagano Hiromi , Iwamoto Masakazu , Kagawa Shuichi 
Published: July 2006

Abstract
The transport of CO through a thin layer of tetraethylenepentamine was found to be enhanced by the presence of CuI ion. The CO uptake measurement and the i.r. study suggested that the facilitated transportation of CO was mediated by the reversible formation of a CuI-carbonyl complex.
CO-PROCESSING OF COAL AND SHALE OIL
Authors: Yoshida Ryoichi , Miyazawa Makoto , Maekawa Yosuke 
Published: July 2006

Abstract
By using shale oil as a vehicle oil in coal liquefaction, low hydrogen consumption, low yield of gaseous products, a high yield of hexane-soluble fraction and high conversion of coal were brought about. Hexane-soluble fraction rich in hydrogen was obtained. The oxygen and nitrogen contents of hexane-soluble fraction were lower than in the original shale oil.
KrF LASER PHOTOLYSIS AND RADIOLYSIS OF 4-VINYLPYRIDINE
Authors: Matsunuma Satoshi , Ishii Tadahiro , Handa Takashi , Arai Shigeyoshi 
Published: July 2006

Abstract
The irradiation of alcoholic solutions of 4-vinylpyridine (VP) with KrF laser pulses produced a transient absorption with a large peak at 335 nm and a small one at 500 nm. The absorption is attributed to a hydrogen-adduct of VP. The radiation chemical results obtained with VP are consistent with the assignment.
OPTICAL RESOLUTION OF Dl-AMINO ACIDS WITH ALIPHATIC SIDE CHAIN BY USING l-PHENYLALANINE
Authors: Shiraiwa Tadashi , Ikawa Akihiko , Sakaguchi Keiji , Kurokawa Hidemoto 
Published: July 2006

Abstract
An aqueous solution containing l-phenylalanine (l-Phe) and Dl-valine, Dl-leucine or Dl-isoleucine in the molar ratio of 1:2 gave adduct composed of equimolar amounts of l-Phe and the amino acids abounding in d-isomer as crystals. From the adducts, the recovered free aliphatic amino acids had about 100% optical purity.
DOUBLE-ARMED 16-CROWN-5. MARKED AND SPECIFIC ENHANCEMENT IN CATION BINDING ABILITIES
Authors: Ouchi Mikio , Inoue Yoshihisa , Wada Kazuhito , Hakushi Tadao 
Published: July 2006

Abstract
16-Crown-5 derivatives with double oxyethylene side-arms of various chain lengths were synthesized and their cation-binding abilities were assessed. In addition to the general enhancement in extractabilities for most cations, peak extractabilities were observed for the size-fitted cations, i.e. Na+ and Ag+, at a specific length of the side-arm.
SYNTHESIS OF (−)-[12,12-2H2]RISHITIN
Authors: Murai Akio , Masamune Tadashi 
Published: July 2006

Abstract
For studies on the vital metabolic pattern of rishitin, a representative phytoalexin of diseased potatoes, (−)-[12,12-2H2]rishitin has been synthesized stereoselectively from (11S)-2α-acetoxy-3-oxo-4β,5α-eudesman-6β,12-olide.
HIGH PRESSURE NMR STUDY ON THE KINETICS OF LIGAND EXCHANGE REACTION IN PENTAKIS(DIMETHYL SULFOXIDE)OXOVANADIUM(IV)
Authors: Harada Masayuki , Ikeda Yasuhisa , Tomiyasu Hiroshi , Fukutomi Hiroshi 
Published: July 2006

Abstract
The kinetics of ligand exchange in [VO(dmso)5]2+ (dmso = dimethyl sulfoxide) has been studied by the high pressure NMR method. The volume of activation ΔV≠ for the dmso exchange at the basal positions of [VO(dmso)5]2+ was determined to be (−5.3±0.4) cm3/mol. This negative value of ΔV≠ is consistent with associative behavior in the ligand substitution processes of oxovanadium(IV) complexes.
PHOTOCHEMICAL REACTION OF DIBENZOTETRAMETHYLDISILACYCLOHEXADIENE THROUGH CHARGE-TRANSFER COMPLEX
Authors: Sakurai Hideki , Sakamoto Kenkichi , Kira Mitsuo 
Published: July 2006

Abstract
The reaction of dibenzo-1,1,2,2-tetramethyl-1,2-disilacyclohexadiene with tetracyanoethylene under illumination with a sodium lamp gave dibenzo-1,1-dimethyl-1-silacyclopentadiene as a silylene extrusion compound through a charge-transfer complex.
DIRECT α-ALLYLATION OF KETONES WITH O-ALLYLISOUREA CATALYZED BY PALLADIUM(0)
Authors: Inoue Yoshio , Toyofuku Masanori , Hashimoto Harukichi 
Published: July 2006

Abstract
Direct α-allylation of ketones catalyzed by a palladium(0)-diphosphine system took place employing O-allylisourea as the allylating reagent under neutral conditions at room temperature in DMF.
PREPARATION OF ZSM-4 AND -5 ZEOLITES BY USING SLUDGE OBTAINED FROM GEOTHERMAL POWER PLANT
Authors: Sato Tosio , Kurita Minoru , Yoshimura Yuji , Shimada Hiromichi , Shin Shigemitsu , Nishijima Akio 
Published: July 2006

Abstract
Zeolites such as ZSM-5 or -4 were easily synthesized by using sludge obtained from geothermal power plants in place of some chemicals. Zeolites prepared were characterized by an X-ray diffractometer and a scanning electron microscope.
EFFICIENT SYNTHESIS OF SECONDARY CARBOXAMIDES WITH ω-SUBSTITUTED ETHYL AND PROPYL GROUPS ON NITROGEN ATOM BY NUCLEOPHILIC RING OPENING OF CYCLIC IMIDATES
Authors: Saito Seiki , Tamai Hideaki , Usui Yuki , Inaba Masami , Moriwake Toshio 
Published: July 2006

Abstract
An efficient synthesis of secondary carboxamides carrying ω-substituted ethyl and propyl groups on nitrogen atom has been developed which highlights nucleophilic ring opening of 2-methyl-2-oxazoline, 2-methyl-2-oxazine, and their derivatives with (CH3)3SiX and HX (X= Cl, N3, SeC6H5, SC6H5) type reagents.
REGENERATION OF AMINO COMPOUNDS FROM THE 2,4,6-TRINITROPHENYL DERIVATIVES BY TREATMENT WITH HYDRAZINE
Authors: Takahashi Seitaro , Yamamura Takaki , Kamo Masaharu , Satake Kazuo 
Published: July 2006

Abstract
2,4,6-Trinitrophenylalanine gave free alanine and 1-hydroxy-4,6-dinitrobenzotriazole by treating with aqueous solution of hydrazine at pH 7–9 and 30 °C. Applying the reaction to partially trinitrophenylated derivative of lima bean trypsin inhibitor, the fully active protein could be regenerated almost quantitatively.
FORMATION OF Co3O4 CLUATERS IN TiO2 SUPPORT OBSERBED BY EXAFS
Authors: Tanabe Syuji , Ida Takashi , Tsuiki Hideyasu , Ueno Akifumi , Kotera Yoshihide , Tohji Kazuyuki , Udagawa Yasuo 
Published: July 2006

Abstract
It was revealed by EXAFS that tiny clusters of Co3O4 are formed in TiO2 support after the calcination step of Co/TiO2 catalyst preparation procedure by alkoxide technique. The high dispersion of these small clusters is attributed to the reason why cobalt metal particles in the catalyst can be controlled in an even size level after the reduction by hydrogen.
ENZYME IMMUNOSENSOR USING HAPTEN-BOUND MEMBRANE AND Fab’-β-d-GALACTOSIDASE COMPLEXES
Authors: Haga Makoto , Ikuta Miki , Kato Yuriko , Suzuki Yasuo 
Published: July 2006

Abstract
An enzyme immunosensor using a hapten-bound membrane and Fab’-β-d-galactosidase complexes has been developed to improve the reproducibility and the capability of multi-cyclic operation. The proposed method may be useful for repeated uses of the enzyme immunosensor without exchanging the membranes.
ISOQUINOLINE DERIVATIVES FROM THE RITTER-TYPE REACTION OF VINYL CATIONS
Authors: Kitamura Tsugio , Kobayashi Shinjiro , Taniguchi Hiroshi 
Published: July 2006

Abstract
Both silver-assisted reaction of β-arylvinyl bromides and the photolysis in nitriles gave isoquinoline derivatives, indicating that the Ritter reaction involving a vinyl cation took place.
PHOTOOXIDATION OF p-METHYLBENZYL ALCOHOL BY OXYGEN, CATALYZED BY FLAVIN ANALOGUES (3-METHYL-10-PHENYLISOALLOXAZINE AND 3-METHYL-10-PHENYL-5-DEAZAISOALLOXAZINE) IN THE PRESENCE OF Mg2+ ION
Authors: Fukuzumi Shunichi , Kuroda Sadaki , Tanaka Toshio 
Published: July 2006

Abstract
Flavin analogues (3-methyl-10-phenylisoalloxazine and 3-methyl-10-phenyl-5-deazaisoalloxazine) catalyze the photooxidation of p-methylbenzyl alcohol by oxygen in the presence of Mg2+ ion in acetonitrile to yield p-methylbenzaldehyde and hydrogen peroxide under irradiation of the visible light of λ&gt;360 nm.
MÖSSBAUER STUDY OF ZrF4–BaF2–FeF3 GLASSES
Authors: Kawamoto Yoji , Horisaka Tamaki , Hirao Kazuyuki , Soga Naohiro 
Published: July 2006

Abstract
The Mössbauer spectra of ZrF4–BaF2–FeF3 glasses revealed that both Fe2+ and Fe3+ with octahedral F coordination are present in the glasses. The compositional dependence of Fe2+/(Fe2+ + Fe3+), explainable with the basicity of glass, suggests that Fe2+ and Fe3+ behave like a glass modifier and a glass former, respectively.
ANOMALOUS ORIENTATIONAL EFFECTS DURING BENZOYLOXYLATIONS BY “SILVER BROMIDE DIBENZOATE”
Authors: Bryce-Smith Derek , Isaacs Neil S , Tumi Seddeg O 
Published: July 2006

Abstract
The solid complex formed from bromine and silver benzoate reacts with both arenes and alkanes to form aryl and alkyl benzoates, respectively. Highly unusual substituent effects are observed in the benzoyloxylations of arenes. Electron-withdrawing groups (e.g. –NO2, –CN, –CO–) on the aromatic ring facilitate reaction though directing the attacking reagent exclusively to the meta position. In alkanes, tertiary positions are most prone to attack.
PALLADIUM CATALYZED REACTION OF ARYL BROMIDES WITH CYANOMETHYLTRIBUTYLTIN, AROMATIC CYANOMETHYLATION
Authors: Kosugi Masanori , Ishiguro Masahiro , Negishi Yoshikazu , Sano Hiroshi , Migita Toshihiko 
Published: July 2006

Abstract
Palladium catalyzed reaction of aryl bromides with cyanomethyltributyltin gave arylacetonitriles in moderate yields. Aryl bromides having strong electron-withdrawing groups(such as acyl, cyano, nitro, etc.) cannot be applied to the reaction.
TWO-CARBON MICHAEL ACCEPTORS. ACETYL CATION EQUIVALENTS
Authors: Kinoshita Hitoshi , Hori Isaburo , Oishi Takeshi , Ban Yoshio 
Published: July 2006

Abstract
Base-induced Michael condensation of chloromethoxyvinyl phenyl sulfoxides or sulfones with active methylene compounds were examined. The newly introduced functionalized substituents were converted into acetyl group by the subsequent treatment.
ENRICHMENT OF ORGANIC SOLUTES WITH HYDROPHOBIC POLYMER MEMBRANE
Authors: Igawa Manabu , Tachibana Taka-aki , Yoshida Kayoko , Tanaka Masao , Seno Manabu 
Published: July 2006

Abstract
Dilute aqueous solutions of aromatic hydrocarbons were permeated through a fluorocarbon polymer membrane under a pressure gradient. Some organic solutes were enriched about two fold and there was a peak in the relationship between enrichment factors and hydrophobicities of the solutes.
A FACILE SYNTHESIS OF γ,δ-UNSATURATED ESTERS BY THE Pd(II) CATALYZED CLAISEN REARRANGEMENT
Authors: Ohshima Masahiro , Murakami Masahiro , Mukaiyama Teruaki 
Published: July 2006

Abstract
A mixed ortho ester is prepared under mild conditions from an allyl alcohol and a ketene acetal in the presence of PdCl2(COD). The ortho ester thus formed is successively treated with a catalytic amount of PdCl2(PPh3)2 in refluxing p-xylene to afford a γ,δ-unsaturated ester in a high yield under neutral conditions.
PREPARATION OF DIBENZO-18-CROWN-6 COMPLEXES OF CADMIUM(II) AND MERCURY(II), [MX2(dbc)], AND MOLECULAR STRUCTURE OF [HgCl2 (dbc)]
Authors: Kawasaki Yoshikane , Matsuura Yoshiki 
Published: July 2006

Abstract
[MX2(dbc)] complexes (M= Cd and Hg, X= Cl, Br, I, CN, and SCN) were prepared by heating an equimolar mixture of MX2 and dibenzo-18-crown-6 (dbc) in acetonitrile or toluene. A linear Cl–Hg–Cl moiety was found to be held perpendicularly in a quasi-planar ring of O6 from the X-ray cryatal structure analysis.
FISCHER-TROPSCH SYNTHESIS CATALYZED BY ACTIVATED Fe POWDER GENERATED BY THE REDUCTION OF FeI2(OR FeBr2) WITH POTASSIUM
Authors: Nomura Masakatsu , Takebe Khoichiro , Miyake Mikio 
Published: July 2006

Abstract
Activated Fe powder prepared by the reduction of FeI2(or FeBr2) with potassium in THF solvent shows both a preferential formation of C4 hydrocarbon and a high selectivity of olefin formation in the CO hydrogenation.
A FACILE CONVERSION OF 5-TRIFLUOROMETHYL-5,6-DIHYDROURACILS TO 5-TRIFLUOROMETHYLURACILS
Authors: Fuchikami Takamasa , Yamanouchi Akiko 
Published: July 2006

Abstract
5-Trifluoromethyl-5,6-dihydrouracils were directly converted to the corresponding 5-trifluoromethyluracils by the reaction with copper(II) bromide in dimethylformamide/water or dimethylformamide/acetic acid in good to excellent yields.
SELECTIVE SYNTHESIS OF C2-OXYGENATED COMPOUNDS FROM SYNTHESIS GAS OVER Ir–Ru BIMETALLIC CATALYSTS
Authors: Hamada Hideaki , Kuwahara Yasushi , Kintaichi Yoshiaki , Ito Takehiko , Wakabayashi Katsuhiko , Iijima Hitoshi , Sano Ken-ichi 
Published: July 2006

Abstract
Silica-supported Ir–Ru bimetallic catalysts were found to produce C2-oxygenated compounds from synthesis gas at temperatures from 280 °C to 300 °C under 50 atm. The addition of Li to the bimetallic catalysts brought about improvement in catalytic activity and selectivity
SELECTIVITIES OF THE PLATINUM GROUP METALS IN DEUTERATION OF 1,2- AND 1,6-DIMETHYLCYCLOHEXENES
Authors: Nishimura Shigeo , Tsuchimoto Michiko , Ohkubo Kazuo 
Published: July 2006

Abstract
The deuteration of 1,2- and 1,6-dimethylcyclohexenes over the six unsupported platinum metals has been studied at 25 °C and atmospheric pressure. The stereoselectivities and the degrees of exchange in the formation of saturates have been found to be correlated.
ELECTROLYTE-INDUCED SPIN-STATE TRANSITION OF IRON IN IRON(III) PHTHALOCYANINE
Authors: Kobayashi Nagao , Koshiyama Masami , Ishikawa Yoko , Osa Tetsuo , Shirai Hirofusa , Hojo Nobumasa 
Published: July 2006

Abstract
Magnetic susceptibility, magnetic circular dichroism(MCD), UV-visible absorption, and ESR spectroscopy have revealed that spin state of iron in 1,2,8,9,15,16,22,23-octadecyloxycarbonylphthalocyaninatoiron(III) dissolved in CH2Cl2 or CHCl3 changes from high-spin to low-spin state by the addition of ca. 10 equiv. of tetrabutylammoniumchloride (Bu4NCl) and/or -bromide(Bu4NBr), (electrolytes).
ROLE OF LONG CONJUGATED SEGMENTS IN THE ELECTRICAL PROPERTY OF TRANS-POLYACETYLENE
Authors: Arakawa Tsutomu , Furukawa Yukio , Takeuchi Hideo , Harada Issei , Shirakawa Hideki 
Published: July 2006

Abstract
Raman spectra and electric conductivity of trans-polyacetylene and doped polyacetylene have been studied. A linear relationship holds between contents of long conjugated segments in pristine films and values of conductivity at their maximally iodine-doped states. At the early and intermediate doping stages an apparent correlation exists between contents of doped long segments and conductivity. Enrichment of long conjugated segments is essential to the improvement of the electrical property of trans-polyacetylene.
EFFECT OF THE MOLECULAR SIZE OF ANILINIUM COUNTER CATION ON THE 35Cl NMR LINE WIDTH OF CHLORIDE ION
Authors: Suezawa Hiroko , Kodama Tomoro , Ogino Jun-ichi , Hirota Minoru 
Published: July 2006

Abstract
The 35Cl NMR line width of chloride ion is shown to reflect the molecular size of anilinium counter cation by plotting the calibrated line width (Δν\frac12T⁄η) against the assumed molecular size (a3). On the basis of the concentration vs. 35Cl line width plot, specific interaction between the cation and chloride ion is concluded to exist even in aqueous solutions.
COMPLETE RETENTION OF CHIRALITY IN THE PALLADIUM CATALYZED CYCLIZATION OF METHYL (R)-3-OXO-7-(METHOXYCARBONYLOXY)-8-NONENOATE
Authors: Yamamoto Keiji , Deguchi Ryoji , Ogimura Yoshinobu , Tsuji Jiro 
Published: July 2006

Abstract
Optically active methyl (R)-3-oxo-7-(methoxycarbonyloxy)-8-nonenoate (1) underwent intramolecular allylation catalyzed by Pd(OAc)2-dppe in THF at room temperature to give racemic 3-vinyl-2-methoxycarbonylcyclohexanone (3), whereas similar palladium-catalyzed cyclization of a sodium salt of 1 proceeded very rapidly at 0 °C to form optically active 3, indicative of complete retention of the original chiral center.
MÖSSBAUER STUDY OF TIN IN α-Fe2O3
Authors: Ichiba Sumio , Yamaguchi Tomoharu 
Published: July 2006

Abstract
Natural tin was introduced into the crystal lattice of α-Fe2O3 by diffusion at 1000 °C. The 119Sn Mössbauer spectra of a well-resolved six-line due to supertransferred hyperfine magnetic field were obtained. It is insured that 2.7 mol% of natural tin was incorporated uniformly in the crystal lattice of α-Fe2O3. The Mössbauer parameters coincided with the values of the other works.
MÖSSBAUER STUDY OF KCl–ZnCl2–FeCl2 GLASSES
Authors: Nishida Tetsuaki , Nakamura Akihiro , Takashima Yoshimasa 
Published: July 2006

Abstract
Mössbauer spectrum of xKCl·(90−x)ZnCl2·10FeCl2 glasses (27≥x≥0) suggests that Fe2+ ions are present, as a network modifier, at interstitial sites of the three-dimensional network composed of ZnCl4 tetrahedra. A continuous decrease in the isomer shift observed with increasing KCl content is ascribed to the formation of nonbridging chlorine atoms at the neighboring sites of iron.
SYNTHESIS AND [2+2]-CYCLOREVERSION OF CAGE KETONES
Authors: Yamashita Yoshiro , Mukai Toshio 
Published: July 2006

Abstract
A series of pentacyclic cage ketones 2b-d having no substituent was synthesized by the photochemical [2+2]-cycloaddition reaction of corresponding tricyclic dienones 1b-d. The cage ketones 2b-d underwent thermal [2+2]-cycloreversion to give dienones 1b-d. The reactivities were dependent on the length of the bridge “X”.
PREPARATION AND IMINE-ENAMINE TAUTOMERISM OF 4,6-DIPHENYL-1,2-DIHYDROPYRIMIDINE
Authors: Weis Alexander L , Vishkautsan Rosita 
Published: July 2006

Abstract
4,6-Diphenyl-1,2-dihydropyrimidine was prepared by LiAlH4 reduction of 4,6-diphenylpyrimidin-2(1H)-one or 4,6-diphenylpyrimidine. Using 1H and 13C NMR, it was shown that in CDCl3 the product exists in tautomeric equilibrium with 4,6-diphenyl-2,5-dihydropyrimidines.
SELECTIVE SYNTHESIS OF AROMATIC HYDROCARBONS FROM SYNTHESIS GAS
Authors: Saima Hitoshi , Fujimoto Kaoru , Tominaga Hiro-o 
Published: July 2006

Abstract
Aromatic hydrocarbons, whose major components were penta- and hexa- methyl benzenes, were produced with the selectivity of 27% from synthesis gas at 350 °C and under 21 atm with hybrid catalysts containing Pd/SiO2 catalyst and high silica mordenites. Steam treatment of the high silica mordenite, which cause the hydration, promoted the selectivity of aromatic hydrocarbons and suppressed dramatically the coke producing ability of the hybrid catalyst upon synthesis gas conversion.
LEWIS ACID CATALYZED RACEMIZATION OF CHRYSANTHEMOYL CHLORIDE
Authors: Suzukamo Gohfu , Fukao Masami , Nagase Tsuneyuki 
Published: July 2006

Abstract
The facile racemization of chrysanthemic acid was achieved by treatment of chrysanthemoyl chloride with a catalytic amount of Lewis acid followed by hydrolysis. The reaction mechanism is also proposed.
A NEW METHOD FOR NUCLEOPHILIC OXYMETHYLATION USING α-ALKOXYSlLANES. SYNTHESIS OF UNSYMMETRICAL 1,2-DIOLS
Authors: Tsuge Otohiko , Kanemasa Shuji , Nagahama Hideki , Tanaka Junji 
Published: July 2006

Abstract
Desilylation of α-alkoxysilanes offers the convenient generation of carbinyl carbanions which react with a variety of carbonyl compounds giving mono-protected 1,2-diols of unsymmetrical type. Dehydration of these unsymmetrical diols leads to the regioselective formation of methyl ketones.