bluuebunny/crossref_metadata_2025_split huggingface dataset:
THE REACTION OF TRIALKYLBORANES WITH LITHIUM ACETYLIDES PREPARED FROM TRIETHYL ORTHOPROPIOLATE AND PROPIOLALDEHYDE DIETHYL ACETAL
Authors: Hara Shoji , Dojo Hidetaka , Kato Tatuo , Suzuki Akira 
Published: July 2006

Abstract
Lithium acetylides with functional groups such as orthoester or acetal group in the molecule react with trialkylboranes with the migration of alkyl groups. The oxidation of the intermediates obtained from triethyl orthopropiolate gives a mixture of β-hydroxy-and α,β,-unsaturated esters, and the oxidation of those from propiolaldehyde diethyl acetal gives (E)-1-ethoxy-1-alken-3-ones respectively.
REDUCTION DE PHENYLSULFONYL-2 AZIRIDINES. SYNTHESE DE PHENYLTHIO-2 AZIRIDINES
Authors: Gaillot Jean-Marc , Gelas-Mialhe Yvonne , Vessiere Roger 
Published: July 2006

Abstract
Reductive cleavage of 2-phenylsulfonylaziridines with sodium amalgam provides an attractive synthetic route to 2-unsubstituted aziridines. LiAlH4 gives several compounds. DIBAH causes a sulfur-oxygen cleavage to form 2-phenylthioaziridines which are also prepared from 2-phenylsulfinylaziridines.
EXPERIMENTAL APPROACH TO DISSIPATIVE PROCESS: TRAJECTORY TRACING IN COMPLICATED CHEMICAL REACTION SYSTEM
Authors: Matsuzaki Akiyoshi 
Published: July 2006

Abstract
The present study has introduced a new approach for the investigation of the complicated batch reaction system. This method is based on the spectrum theory and the stability theory. It was applied to the analysis of the typical temporal-evolution observed in the laser-induced aerosol formation from gaseous CS2molecules.
PREPARATION OF NEW Pt- AND Ni-CONTAINING CYCLIC ESTERS AND THEIR REACTIVITIES
Authors: Sano Kenji , Yamamoto Takakazu , Yamamoto Akio 
Published: July 2006

Abstract
New Pt- or Ni-containing cyclic esters (PCy3PtCOCH2CH2COO, (PCy3)2PtCOCH2CH2COO, dpe-PtCOCH2CH2COO, dpe-NiCH2CH2COO, and bpy-NiCH2CH2CH2COO; PCy3 = tricyclohexylphosphine, dpe = 1,2-bis(diphenylphosphino)ethane, bpy = 2,2′-bipyridine) are prepared by oxidative addition of the corresponding cyclic carboxylic anhydrides to Pt(0) or Ni(0) complexes.
ZEOLITE SUPPORTED Ru–Pt CATALYSTS FOR SELECTIVE FISCHER-TROPSCH SYNTHESIS
Authors: Okuda Osamu , Tatsumi Takashi , Fujimoto Kaoru , Tominaga Hiro-o 
Published: July 2006

Abstract
Ruthenium–platinum bimetallic catalysts, prepared by simultaneous ion-exchange on zeolite HY, selectively produced from synthesis gas branched-chain paraffins in the C4–C10 range, Exception to this was found for a catalyst with 4% Ru and 2% Pt by weight, which was highly active in exclusive formation of CH4.
ACTIVITY PATTERNS OF H3PMo12O40 AND ITS ALKALI SALTS FOR OXIDATION REACTIONS
Authors: Komaya Takashi , Misono Makoto 
Published: July 2006

Abstract
It has been demonstrated that oxidation reactions of organic compounds over H3PMo12O40 and its alkali salts are classified into two prototypes. In the first type reactions, the surface redox properties of catalysts are important, and in the second type the bulk properties. Oxygen-addition reactions like methacrolein to methacrylic acid are an example of the former, and oxidative dehydrogenation is the latter example.
HIGHLY EFFICIENT PHOTOREDUCTION OF METHYLVIOLOGEN BY TRIS(BIS-DIAZADIIMINE)RUTHENIUM(II) COMPLEXES
Authors: Kitamura Noboru , Kawanishi Yuji , Tazuke Shigeo 
Published: July 2006

Abstract
Photoreduction of methylviologen (MV2+) by several Ru(II)L3 (L:bisdiazadiimine) complex was studied in the presence of triethanolamine in aqueous solution. The quantum yield of MV+ formation (MV+) was as high as 0.98 or 0.85 in vacuo when L is 2,2′-bipyrazine or 2,2′-bipyrimidine, respectively. These results were interpreted as due to reductive quenchineg of Ru(II)L3* by triethanolamine.
CATALYTIC CARBONYLATION OF DIARYLIODONIUM SALTS PROMOTED BY PALLADIUM-ZINC SYSTEM. A NEW SYNTHESIS OF DIARYL KETONES AND DIARYL-α-DIKETONES
Authors: Uchiyama Masaharu , Suzuki Takehiko , Yamazaki Yasuo 
Published: July 2006

Abstract
Diaryliodonium salts react with carbon monoxide, in the presence of zinc and a catalytic amount of palladium acetate, to give a mixture of the corresponding diaryl ketones and diaryl-α-diketones under mild conditions.
A HIGHLY STEREOSELECTIVE SYNTHESIS OF ENOL-δ-LACTONES BY THE WITTIG REACTION OF GLUTARIC ANHYDRIDES WITH α-ALKOXYCARBONYLETHYLIDENETRIPHENYLPHOSPHORANE
Authors: Tsuboi Sadao , Fukumoto Hirohumi , Takeda Akira 
Published: July 2006

Abstract
Enol-δ-lactones were prepared stereoselectively by the title reaction.
SYNTHESIS OF TWO ISOMERIC TETRACYANOANTHRAQUINODIMETHANES
Authors: Yamaguchi Shunro , Tatemitsu Hitoshi , Sakata Yoshiteru , Misumi Soichi 
Published: July 2006

Abstract
Synthesis of two new acceptors, i.e., dibenzo- and naphtho-TCNQ, is described. Their redox potentials suggest that benzo and naphtho annelations to TCNQ lower the acceptor strength. Both compounds gave no CT complex with TTT, TTF, etc.
CHIRALITY TRANSFER DURING CYCLOBUTYL–CYCLOPROPYLMETHYL–HOMOALLYL CATION REARRANGEMENT AND SYNTHESIS OF (−)-ELDANOLIDE
Authors: Yokoyama Yasushi , Yunokihara Masatoshi 
Published: July 2006

Abstract
The (3R)-2,2-dimethyl-3-(2-methoxycarbonyl)ethylcyclobutyl cation rearranged to give (1S,2S)-1-(1-methoxy-1-methyl)ethyl-2-(2-methoxycarbonyl)ethylcyclopropane. The latter was transformed into (4R)-4-(3-methylbut-2-enyl)-4-butyrolactone with a high degree of chirality transfer. The γ-lactone was converted into (−)-eldanolide, an antipode of the wing gland pheromone of an African sugar-cane borer.
SYNTHESIS OF PROSTACYCLIN ANALOGUE (4-OXO-PGI2)
Authors: Ono Toshio , Sibasaka Isao , Nokami Junzo , Wakabayashi Shoji 
Published: July 2006

Abstract
A stable prostaglandin I2 (PGI2) analogue, 4-oxo-PGI2 was synthesized by employing Wittig-like olefin synthesis due to the reaction of a carbanion linked to an electron withdrowing group with a lactone carbonyl group.
TIME-RESOLVED AND LOW-TEMPERATURE ABSORPTION SPECTROSCOPIC STUDIES ON 10-SILAANTHRACEN-9(10H)-YLIDENE
Authors: Sugawara Tadashi , Iwamura Hiizu , Hayashi Hisaharu , Sekiguchi Akira , Ando Wataru , Liu Michael T H 
Published: July 2006

Abstract
Laser-photolysis studies have been carried out on a solution of 9-diazo-10,10-dimethyl-10-sila-9(10H)-anthracene in cyclohexane to obtain a series of UV absorptions due to transient species. The spectral assignment was corroborated by absorption spectra and ESR studies of the photolyses in an EPA matrix at 77 K.
STATE ANALYSIS OF STEEL SURFACES UTILIZING THE 9TH-ORDER FeKα1 LINE BY AN ELECTRON PROBE MICROANALYZER
Authors: Fujimori Haruo , Iba Hajime , Tsuchiya Hiroyuki 
Published: July 2006

Abstract
Chemical states of steel surfaces covered with iron oxides and fluorides were analyzed by a state analysis method utilizing the 9th-order FeKα1 line. The method was effective for the state analysis of iron compounds especially when the compounds were thicker than the detection depth of the FeKα1 line.
TRANSFORMATION OF β-ALKENYL-β-PROPIOLACTONES INTO CYCLOPROPYLACETIC ACIDS UTILIZING HYDROBORATION
Authors: Kawashima Masatoshi , Fujisawa Tamotsu 
Published: July 2006

Abstract
The reaction of β-alkenyl-β-propiolactones with 9-borabicyclo[3.3.1]nonane and subsequent treatment with sodium methoxide gave cyclopropylacetic acids in good yields.
THE SIX GEOMETRICAL ISOMERS OF BIS(4-AMINO-2-AZA-BUTANECARBOXYLATO)COBALT(III) ION, [Co(edma)2]+
Authors: Yasui Takaji , Kawaguchi Hiroshi , Ama Tomoharu 
Published: July 2006

Abstract
All of the six geometrical isomers possible in [Co(edma)2]+ complex ion (edma: 4-amino-2-aza-butanecarboxylato or ethylenediaminemonoacetato) were isolated in crystal and the five racemates were resolved into optically active isomers by a column chromatographic method. The visible absorption, 13C-NMR, and CD spectra were measured and the geometrical structures were assigned.
INTERMEDIATES IN AROMATIC NUCLEOPHILIC SUBSTITUTION OF 4-METHOXY- AND 4-CHLORO-3,5-DINITROBENZOIC ACIDS WITH HYDROXIDE ION IN AQUEOUS DIMETHYL SULFOXIDE
Authors: Hasegawa Yoshinori 
Published: July 2006

Abstract
The reactions of 4-methoxy- and 4-chloro-3,5-dinitrobenzoic acids with hydroxide ion in aqueous dimethyl sulfoxide were studied by visible absorption spectroscopy. The formation of anionic σ-complexes, followed by intermediate complexes was observed.
STUDIES OF 29Si SPIN-LATTICE RELAXATION TIMES AND PARAMAGNETIC IMPURITIES IN CLAY MINERALS BY MAGIC-ANGLE SPINNING 29Si-NMR AND EPR
Authors: Watanabe Tokuko , Shimizu Hiroshi , Masuda Akimasa , Saitô Hazime 
Published: July 2006

Abstract
High-resolution solid state 29Si-NMR spectra and EPR spectra have been examined on twelve natural philosilicates. It has been found that presence of paramagnetic impurities is markedly effective in shortening the 29Si spin-lattice relaxation times (10 to 1000 ms), and in broadening the linewidths and is favorable for the use of solid state high-resolution 29Si NMR as a tool for structural studies of inorganic materials.
REACTIONS OF ORGANOLANTHANOID σ COMPLEXES WITH α,β-UNSATURATED CARBONYL COMPOUNDS. SELECTIVE 1,2-ADDITION
Authors: Yokoo Kazuhiro , Yamanaka Yasuhiro , Fukagawa Toshihiro , Taniguchi Hiroshi , Fujiwara Yuzo 
Published: July 2006

Abstract
Organoytterbium iodide σ complexes (RYbl) react with α,β-unsaturated carbonyl compounds such as acrolein, methyl vinyl ketone, benzalacetone, chalcone, and 2-cyclohexen-1-one to give 1,2-addition products selectively. This high selectivity is explained in terms of the HSAB theory.
A NEW ELECTROGENERATED BASE. CONDENSATION OF CHLOROFORM WITH ALIPHATIC ALDEHYDES
Authors: Shono Tatsuya , Kashimura Shigenori , Ishizaki Kunihiko , Ishige Osamu 
Published: July 2006

Abstract
A novel base was generated by electrochemical reduction of 2-pyrrolidone in DMF, and this electrogenerated base (EGB) was effective to promote the condensation of chloroform with aliphatic aldehydes in good yields.
ABSORPTION SPECTRUM OF THE 2,3-DIHYDROXY-2-PROPENAL (TRIOSE REDUCTONE) RADICAL
Authors: Horii Hideo , Abe Yasuo , Taniguchi Setsuo , Maeda Shigeichi , Watanabe Takehiko 
Published: July 2006

Abstract
Absorption spectrum of 2,3-dihydroxy-2-propenal (triose reductone) radical was observed upon the oxidation by anion radicals (SCN)2−· and Br2−· in pulse-irradiated solutions. The triose reductone radical was found to decay by a bimolecular reaction.
STEREOSELECTIVITY IN THE PHOTOCYCLODIMERIZATION OF PHENYL VINYL ETHER VIA ELECTRON-TRANSFER
Authors: Mizuno Kazuhiko , Kagano Hirokazu , Kasuga Toshio , Otsuji Yoshio 
Published: July 2006

Abstract
The stereoselectivity in the photocyclodimerization of phenyl vinyl ether (D) via electron-transfer depends strongly upon the concentration of D and the reaction temperature.
STEREOCHEMISTRY OF REACTION OF (E)- AND (Z)-β-TRIMETHYLSILYLSTYRENE WITH ARYLPALLADIUM TETRAFLUOROBORATES GENERATED FROM ARENEDIAZONIUM TETRAFLUOROBORATES AND PALLADIUM(0)
Authors: Kikukawa Kiyoshi , Ikenaga Kazutoshi , Wada Fumio , Matsuda Tsutomu 
Published: July 2006

Abstract
(E)- and (Z)-PhCH=CHSiMe3 react easily with [ArPd]+BF4− to give (E)-PhCH=CHAr and Ph(Ar)C=CH2 at 25 °C. Stereochemistry of the desilylation is disclosed by using (E)- and (Z)-PhCH=CDSiMe3, that is, syn-addition of Ar-Pd species followed by anti-elimination of Pd and Me3Si moiety for (E)-isomer and syn-elimination for (Z)-isomer are proposed.
DETERMINATION OF PLATINUM BINDING BASES BY ENZYMATIC DIGESTION
Authors: Inagaki Kenji , Kasuya Kyoko , Kidani Yoshinori 
Published: July 2006

Abstract
The reaction mixtures of dinucleotides (G3′p5′G and G3′p5′U) with platinum complexes ([Pt(NH3)3Cl]Cl and cis-Pt(NH3)2Cl2) have been treated with exonuclease (snake venom phosphodiesterase and calf spleen phosphodiesterase), and the platinum binding base in dinucleotides has been determined on the basis of HPLC analysis of the enzymatic digestion products.
ONE-STEP SYNTHESIS OF OXAZOLES FROM KETONES AND NITRILES USING COPPER(II) TRIFLUOROMETHANESULFONATE AS A KEY REAGENT
Authors: Nagayoshi Kazuo , Sato Tadashi 
Published: July 2006

Abstract
Oxazoles were prepared in one step from ketones and nitriles using copper(II) trifluoromethanesulfonate under acid catalysis.
PHOTOCYCLOADDITION OF 3-ARYL-2-ISOXAZOLINES WITH FIVE-MEMBERED HETEROCYCLES
Authors: Kumagai Tsutomu , Kawamura Yasuhiko , Mukai Toshio 
Published: July 2006

Abstract
The irradiation of 3-aryl-2-isoxazolines gives novel [2+2] adducts with furan (or thiophene) by addition across the carbon–nitrogen double bond.
THERMAL REACTION OF 2,3-DIAZATETRACYCLO[5.3.1.04,11.06,8]UNDECA-2,9-DIENES: THE NITROGEN EXTRUSION AND THE MASKED HOMODIENYL-1,5-HYDROGEN SHIFT
Authors: Ohba Yoshihiro , Kumagai Tsutomu , Mukai Toshio 
Published: July 2006

Abstract
Thermolyses of the title compounds produce three kinds of products which are derived from nitrogen extrusion and 1,5-hydrogen shifts. The reaction mechanism is discussed in connection with the thermal behavior of bicyclo[4.2.1]nonatriene.
SYNTHESES AND SPECTRAL CHANGES OF β-IONONE DERIVATIVES BEARING A CARBOXYL GROUP ISOLATED FROM π-CONJUGATED SYSTEM
Authors: Nanasawa Masato , Kamogawa Hiroyoshi 
Published: July 2006

Abstract
β-Ionone derivatives bearing an o- or p-carboxyphenoxy substituent at the 3-position were synthesized. The iminium salt having an o-carboxyl group absorbs at a shorter wavelength, while under alkaline conditions λmax shifts to a longer wavelength presumably on account of the electrostatic attraction between the carboxylate anion and the positive charge.
A NEW FERULOYLATED TRISACCHARIDE FROM BAGASSE
Authors: Kato Atsushi , Azuma Jun-ichi , Koshijima Tetsuo 
Published: July 2006

Abstract
O-(5-O-Feruloyl-α-l-arabinofuranosyl)-(1→3)-O-β-d-xylopyranosyl-(1→4)-d-xylopyranose (I) was isolated from the enzymatic hydrolysate of bagasse lignin–carbohydrate complex containing ferulic acid (LCC-F) and identified from I.R., U.V., G.L.C.-M.S., and N.M.R. spectra.
ENHANCEMENT OF ERYTHRO-SELECTIVITY IN THE [2,3]-WITTIG REARRANGEMENT OF CROTYL PROPARGYL ETHER SYSTEM AND ITS USE IN THE STEREOCONTROLLED FORMAL SYNTHESIS OF (±)-OUDEMANSIN
Authors: Mikami Koichi , Azuma Ken-ichi , Nakai Takeshi 
Published: July 2006

Abstract
The [2,3]-Wittig variant of (Z)-crotyl ether involving trimethylsilylethynyl (or 1-propynyl) group as the key substituent on the carbanion terminus exhibits an exceptionally high level of erythro-selection, and its synthetic potential is illustrated in the formal synthesis of antibiotic (±)-oudemansin.
STRUCTURE AND CONFORMATION OF FURANOCYCLONONENE DITERPENOIDS FROM THE SEAWEED DICTYOTA DICHOTOMA
Authors: Enoki Nobuyasu , Shirahama Haruhisa , Osawa Eiji , Urano Shiro , Ishida Ryoichi , Matsumoto Takeshi 
Published: July 2006

Abstract
The structure of new diterpenoids dictyofuran T and dictyofuran C, isolated from the brown seaweed Dictyota dichotoma, has been determined on the basis of spectral and chemical means.
MEASUREMENT OF ENZYMATIC ACTIVITY OF INORGANIC PYROPHOSPHATASE FOR PYROPHOSPHATE BY FLOW INJECTION ANALYSIS
Authors: Yoza Norimasa , Hirano Hisanobu , Okamura Mayumi , Ohashi Shigeru , Hirai Yukio , Tomokuni Katsumaro 
Published: July 2006

Abstract
A flow injection system was designed for the spectrophotometric measurement of enzymatic hydrolysis of pyrophosphate by inorganic pyrophosphatase (EC 3.6.1.1). Rapid hydrolysis with a very short half-life (2 min) could be easily monitored by the selective detection of orthophosphate using a Mo(VI) reagent.
STEREOCHEMISTRY OF THE C-4 PROCHIRAL HYDROGEN ATOM ELIMINATION OF MEVALONATE IN THE BIOSYNTHESIS OF POLYPRENOLS IN HIGHER PLANTS
Authors: Suga Takayuki , Aoki Tadeshi , Hirata Toshifumi , Saragai Yoshio 
Published: July 2006

Abstract
In the biosynthesis of the polyprenols in the five higher plants examined hitherto, it was found that stereochemistry of the C-4 prochiral hydrogen atom elimination of mevalonate in the formation of their E-isoprene chain follows Cornforth’s basic priciple for mevalonoid biosynthesis, but the formation of their Z-isoprene chain involves, contrary to this principle, the elimination of the pro-4s hydrogen atom of mevalonate
CATALYSIS OF HFe3(CO)11− GRAFTED IN A HYDRATED NaY ZEOLITE IN THE WATER GAS SHIFT REACTION
Authors: Iwamoto Masakazu , Kusano Hideto , Kagawa Shuichi 
Published: July 2006

Abstract
The anionic hydride HFe3(CO)11− species grafted in the zeolite by ionic interaction with an Al3+ ion showed high catalytic activity for the water gas shift reaction, which was comparable to that of iron carbonyl in homogeneous phase. Kinetic and spectroscopic measurements indicated a reaction of HFe3(CO)11− with H2O as a rate determining step.
2- (PHENYLTHIO)-2-PENTEN-5-OLIDE, A NEW BUILDING BLOCK FOR THE SYNTHESIS OF 3-SUBSTITUTED δ-LACTONES
Authors: Kato Michiharu , Ouchi Akihiko , Yoshikoshi Akira 
Published: July 2006

Abstract
2- (Phenylthio)-2-penten-5-olide, readily accessible from δ-valelolactone, showed high electrophilic reactivities toward some typical carbon nucleophiles to give 3-substituted 2-(phenylthio)pentanolides, which were convertible to a variety of 3-substituted pentan-5-olides and 2-penten-5-olides.
OPTICALLY ACTIVE DIALLYLBIS(2-PHENYLBUTYL)TIN. SYNTHESIS AND APPLICATION TO ASYMMETRIC SYNTHESIS OF HOMOALLYL ALCOHOLS
Authors: Otera Junzo , Kawasaki Yuzuru , Mizuno Hirofumi , Shimizu Yasumi 
Published: July 2006

Abstract
Optically active diallylbis(2-phenylbutyl)tin (1) was successfully obtained by the Grignard method. Enantioselective reaction of 1 with various aldehydes afforded homoallyl alcohols in 20–80% optical yields, which are not affected by solvent effect, but are highly dependent on aldehydes.
STEREOSELECTIVE TOTAL SYNTHESIS OF (4S)-trans-β-ELEMENONE FROM (S)-2-CYCLOHEXEN-1-OL
Authors: Sato Toshio , Gotoh Yoshihiko , Watanabe Makoto , Fujisawa Tamotsu 
Published: July 2006

Abstract
Stereoselective first total synthesis of (4S)-trans-β-elemenone was achieved from (S)-2-cyclohexen-1-ol, prepared easily by the asymmetric reduction of 2-cyclohexen-1-one with chiral hydride reagent.
DURABLE CHIRAL GRAPHITE ELECTRODES MODIFIED CHEMICALLY WITH POLY(l-VALINE) AND POLY(N-ACRYLOYL-l-VALINE METHYL ESTER)
Authors: Abe Shigemitsu , Nonaka Tsutomu 
Published: July 2006

Abstract
Graphite electrodes modified chemically with poly(l-valine) and poly(N-acryloyl-l-valine methyl ester) were prepared. They were remarkably more durable than the corresponding dip-coated electrodes when used repeatedly in the electrochemical asymmetric reduction of citraconic acid.
SYNTHESE TOTALE DE LA (d,l) α-CONIDENDRINE
Authors: Nabi Yahia , Dhal Robert , Brown Eric 
Published: July 2006

Abstract
Michael addition of the carbanion of the dithian 7 (derived from O-benzyl vanillin) on butenolide, afforded the saturated lactone 8. Alkylation of the latter with the benzylic bromide 6, followed by regeneration of the carbonyl group gave the α,β-disubstituted lactone 10. Reduction of the ketonic carbonyl group of compound 10 using NaBH4, followed by treatment with CF3CO2H and catalytic hydrogenolysis afforded (d,l)α-conidendrin 1.
INVESTIGATION OF THE DEALUMINATION OF ZEOLITE ZSM-5 BY SOLID-STATE MAGIC-ANGLE SPINNING NMR
Authors: Fyfe C A , Gobbi G C , Kennedy G J 
Published: July 2006

Abstract
The dealumination of ZSM-5 by various procedures has been monitored by 29Si and 27Al MAS NMR. The results suggest that ZSM-5 and ‘Silicalite’ are isostructural: Resolved signals from up to 15 crystallographically inequivalent Si tetrahedra are observed in the 29Si spectra of highly dealuminated ZSM-5 materials identical with those observed in the spectra of very highly siliceous ‘Silicalite’ prepared by direct synthesis.
PROTON CONDUCTION IN ANTIMONIC ACID AT MEDIUM TEMPERATURES IN THE PRESENCE OF WATER VAPOR
Authors: Ozawa Yoshihiro , Miura Norio , Yamazoe Noboru , Seiyama Tetsuro 
Published: July 2006

Abstract
Antimonic acid was found to exhibit a relatively high proton conductivity at medium temperatures of 100–300 °C in the presence of water vapor. For example, the conductivity as high as 1×10−4 S·cm−1 could be maintained for 8 h at 200 °C under the water vapor pressure of 13 kPa. This stable conductivity at medium temperature was found to be attributable to the thermal stability of the water of constitution of Sb2O5·2H2O.
AN IMPROVED TYPE OF PROTON CONDUCTOR SENSOR SENSITIVE TO H2 AND CO AT ROOM TEMPERATURE
Authors: Miura Norio , Kato Hiroshi , Yamazoe Noboru , Seiyama Tetsuro 
Published: July 2006

Abstract
The use of an Ag reference electrode inert to H2 in air made it possible to fabricate a miniaturized proton conductor sensor element which did not necessitate separation of the sample gas from the reference gas (air). The sensor element was as small as 4 mm (diameter) × 8 mm (length) and showed both high sensitivity and fast response to small amounts of H2 or CO in air, with satisfactory stability for a period of about one month.
TWO NOVEL HUMULENOIDS FROM TORILIS SCABRA D.C.
Authors: Itokawa Hideji , Matsumoto Hajime , Mihashi Susumu , Iitaka Yoichi 
Published: July 2006

Abstract
Two humulene type sesquiterpnoids were isolated from Torilis scabra D.C. and their structures were determined by X-ray analysis.
HYDROXY IRON(III) SPECIES STABILIZED WITH BULKY PORPHYRINS
Authors: Miyamoto T Ken , Tsuzuki Seizi , Hasegawa Tai , Sasaki Yukiyoshi 
Published: July 2006

Abstract
Stable hydroxy iron (III) complexes have been prepared in the use of bulky porphyrins, e.g., meso-tetrakis(3,5-di-t-butylphenyl)porphyrin(Abbr. TBPP-H2) and meso-tetrakis(3,5-di-t-butyl-2-nitrophenyl)porphyrin(TBNPP-H2, 4 isomers). The stability of these complexes is rationalized as steric effect due to the t-butyl and/ or nitro groups.
DETERMINATION OF RADON IN SOIL GAS BY AN OPENED COUNTING VIAL AND LIQUID SCINTILLATION COUNTER
Authors: Horiuchi Kimiko , Murakami Yukio 
Published: July 2006

Abstract
An opened counting vial containing liquid scintillator solution, suspended in a hole of the ground, absorbs a definite fraction of radon present in the soil gas allowing the total radon concentration to be determined. Natural level of radon in soil gas was measured. This method is rapid, simple and sensitive.
FURTHER IMPROVEMENTS OF OLIGODEOXYRIBONUCLEOTIDES SYNTHESIS: SYNTHESIS OF TETRADEOXYADENYLATE ON A NEW SILICA GEL SUPPORT USING N6-PHTHALOYLDEOXYADENOSINE
Authors: Kume Akiko , Sekine Mitsuo , Hata Tsujiaki 
Published: July 2006

Abstract
Introduction of a long alkyl chain between the nucleoside and the silica gel support was effective in DNA synthesis via the phosphotriester method. dApApApA containing 3′-terminal deoxyadenosine was successfully synthesized on the support by using N6-phthaloyldeoxyadenosine.
VAPOR-PHASE BECKMANN REARRANGEMENT OF CYCLOHEXANONE OXIME OVER BORIA-HYDROXYAPATITE CATALYST
Authors: Izumi Yusuke , Sato Satoshi , Urabe Kazuo 
Published: July 2006

Abstract
The boron trioxide coupled with hydroxyapatite was found to catalyze the Beckmann rearrangement of cyclohexanone oxime in the vapor phase at 300 °C more selectively than boria-alumina and silica-alumina. The basic property of hydroxyapatite appears to play an important role in effecting the rearrangement selectively.
WAVELENGTH-DEPENDENT PHOTOCHEMISTRY OF 2,3-DIMETHYL-2-BUTENE AND 2-OCTENE IN SOLUTION
Authors: Inoue Yoshihisa , Mukai Toshio , Hakushi Tadao 
Published: July 2006

Abstract
Direct irradiations of the title compounds were performed at 185, &gt;200, &gt;220, and 228 nm in hydrocarbon solvents. The evident wavelength dependence of the product distributions observed is of importance in specifying the excited state involved in the formation of each photoproduct, and suggests that more than two excited singlet states of an alkene undergo distinctly different photoreactions rather than suffer mutual conversions between the states.
RATE OF LIGAND EXCHANGE OF TRIS(ACETYLACETONATO)IRON(III) WITH TRIFLUOROACETYLACETONE AND TRIS(TRIFLUOROACETYLACETONATO)IRON(III) WITH ACETYLACETONE IN CARBON TETRACHLORIDE
Authors: Sekine Tatsuya , Inaba Kazuho 
Published: July 2006

Abstract
The rate of ligand exchange of tris(acetylacetonato)iron(III) with trifluoroacetylacetone and tris(trifluoroacetylacetonato)iron(III) with acetylacetone in carbon tetrachloride has been measured spectrophotometrically and the reaction mechanism was discussed. Use of non-polar solvents as the medium was concluded to be favorable for kinetic studies of this type.