bluuebunny/crossref_metadata_2025_split huggingface dataset:
DIMETHYLTHALLIUM COMPLEXES OF DICYCLOHEXYL-18-CROWN-6
Authors: Kawasaki Yoshikane , Kitano Rhu-ichiro 
Published: July 2006

Abstract
Dimethylthallium complexes of dicyclohexyl-18-crown-6, [(CH3)2Tl(L)]pic, L = DCC-A (1) and DCC-B (2), were prepared. The two methyl protons are not equivalent magnetically in 1, but equivalent in 2. A linear CH3–Tl–CH3 moiety was held strongly and perpendicularly in the quasi-planar ring of six oxygen atoms. The conformation of cyclohexyl groups of the complexes was discussed.
SYNTHESIS OF VINYL IODIDES FROM VINYL BROMIDES AND POTASSIUM IODIDE BY MEANS OF NICKEL CATALYST
Authors: Takagi Kentaro , Hayama Naomi , Inokawa Saburo 
Published: July 2006

Abstract
Vinyl bromides such as (E)-β-methoxycarbonyl-, (E) or (Z)-β-phenyl-, (Z)-β-ethoxy-, or β,β-dimethylvinyl bromide smoothly reacted with an iodide ion in the presence of nickel catalyst to give the corresponding vinyl iodides with complete retention of configurations.
A NEW RADIATION-INDUCED REACTION OF THIAMINE WITH DI-1-ADAMANTYL TETRASULFIDE
Authors: Hayashi Nobuyoshi , Kato Shinji 
Published: July 2006

Abstract
Radiation-induced reaction of thiamine monochloride with di-1-adamantyl tetrasulfide gave two products, 3-(4-amino-2-methyl-5-pyrimidinylmethyl)-6a-(1-adamantyldithio)-3a-methylperhydrofuro[2,3-d]thiazole and 2-(1-hydroxymethyl)-3-(4-amino-2-methyl-5-pyrimidinylmethyl)-6a-(1-adamantyldithio)-3a-methylperhydrofuro[2,3-d]thiazole.
METAL-CATALYZED ORGANIC PHOTOREACTIONS ONE-STEP SYNTHESIS OF CHLORINATED KETONES FROM OLEFINS BY THE PHOTO-OXIDATION IN THE PRESENCE OF IRON(III) CHLORIDE
Authors: Murayama Eigoro , Kohda Akira , Sato Tadashi 
Published: July 2006

Abstract
Under the photo-oxidation in pyridine in the presence of iron(III) chloride, mono- and di-substituted olefins gave α-chloroketones, while tri- and tetra-substituted olefins gave dichloroketones involving C–C bond cleavage.
PHOTO-INDUCED CHARGE SEPARATION WITH RED LIGHT IN THE HYDRATED AGGREGATES OF A SURFACE-ACTIVE MAGNESIUM PORPHYRIN
Authors: Yamamura Takeshi 
Published: July 2006

Abstract
A reversible charge separation induced by the red light illumination was achieved by using the hydrated powder and the hydrated reversed micellar colloid of a cationic surface-active magnesium porphyrin. The effect of the hydration was studied.
CARBANION OF O-ETHYL S-(TETRAHYDRO-2-OXO-3-FURANYL) THIOCARBONATE: A NEW REAGENT FOR THE STEREOSELECTIVE SYNTHESIS OF α-ALKYLIDENE-γ-BUTYROLACTONES FROM CARBONYL COMPOUNDS
Authors: Tanaka Kazuhiko , Yamagishi Nobuyuki , Uneme Hideki , Tanikaga Rikuhei , Kaji Aritsune 
Published: July 2006

Abstract
The lithium salt of O-ethyl S-(tetrahydro-2-oxo-3-furanyl) thiocarbonate was found to be an efficient reagent for the stereoselective synthesis of α-alkylidene-γ-butyrolactones from carbonyl compounds.
SYNTHESIS OF [2,2] FERROCENOPHANE-1,13-DIENE
Authors: Kasahara Akira , Izumi Taeko 
Published: July 2006

Abstract
[2,2] Ferrocenophane-1,13-diene (1) was synthesized via the intermolecular coupling of ferrocene-1,1′-dicarbaldehyde (2) with TiCl4–LiAlH4. The catalytic hydrogenation of 1 led to the formation of [2,2] ferrocenophane (7). An alternate approach to the synthesis of 7, involving the reductive coupling of 1,1′-bis(hydroxymethyl)ferrocene with TiCl4–LiAlH4 is described.
REGIOSPECIFIC BRIDGEHEAD BROMINATION IN TRICYCLO[4.3.1.12,5]UNDECANE. HIGH REACTIVITY OF THE 1- OVER THE 2-CARBON ATOM IN A CARBOCATION REACTION
Authors: Inamoto Yoshiaki , Aigami Koji , Fujikura Yoshiaki , Ohsugi Motoyoshi , Takaishi Naotake , Tsuchihashi Kiyoshi , Ikeda Hiroshi 
Published: July 2006

Abstract
Bromination of tricyclo[4.3.1.12,5]undecane (3) gave exclusively the 1-bromo derivative (5). The structure of 5 was determined unequivocally by making use of deuterium isotope effects on 13C NMR signals of 1-deuterio-3 (6) derived from 5 and 10,10-dideuterio-3 (4) prepared from the dideuterated alcohol 2.
THE ROLE OF METAL IONS IN NADH MODEL REACTIONS
Authors: Watanabe Ken-ichi , Kawaguchi Riuji , Kato Hirokazu 
Published: July 2006

Abstract
Pyridine-2-carbaldehyde and formylferrocene were reduced with 1-benzyl-1,4-dihydronicotinamide and zinc acetate in isopropyl alcohol at 50°C. The reactions were promoted when the quantity of Zn2+ added was increased. No reduction was observed with Pt(II) or Ni(II). Ternary complex as an intermediate was implied.
MULTISTEP OXIDATIONS OF THE UNSYMMETRICAL DISULFIDE AND THIOLSULFINATES: NEW EVIDENCE FOR THE FORMATION OF THE THIONITRITE AND THE SULFINYL DERIVATIVES AS THE INTERMEDIATES
Authors: Oae Shigeru , Fukushima Daikichi , Kim Yong H 
Published: July 2006

Abstract
The oxidations of unsymmetrical disulfide and thiolsulfinates with excess dinitrogen tetraoxide afforded the corresponding symmetrical thiolsulfonates as the main product. The oxidation was found to involve the formations of intermediates of the thionitrite and the sulfinyl nitrite or the sulfinyl nitrate, which are undoubtedly formed by the fission of S–S bond.
ELECTROCHEMICAL PHOTOCELL USING CdS–ZnSe SOLID SOLUTION FILM ANODE
Authors: Tsuiki Masayasu , Ueno Yasusada , Nakamura Tsuyoshi , Minoura Hideki 
Published: July 2006

Abstract
Epitaxial films of CdS–ZnSe solid solution were prepared by vacuum evaporation from the source composed of equimolar amounts of CdS and ZnSe onto the (III) thin films of a NaCl–NaBr solid solution system. The action spectrum of the electrochemical photocell using these epitaxial films as photoanodes in a S2−-containing electrolyte was shifted to the longer wavelength region by about lOOnm compared with a CdS thin film anode. The open-circuit voltage and the short-circuit current were found to be 0.54 V and 0.7 mA/cm2, respectively, under sunlight of 62 mW/cm2.
OXABICYCLONONANE DERIVATIVES
Authors: Kato Tetsuzo , Sato Masayuki , Kitagawa Yoshinori 
Published: July 2006

Abstract
Reactions of 1-hydroxy-4,4-dimethylcyclooctane-2,6-dione-1-acetic acid β-lactone (1) and 6-acetoxy-7-hydroxy-4,4-dimethyl-cis-bicyclo[4.2.0]octan-2-one-7-acetic acid β-lactone (2) with methylamine give the oxabicyclononane derivatives (4a and 4b). Reaction of compound 1 with dimethylamine gives the amide (3a), whose transannular prototropic tautomerism is discussed.
PREPARATION OF CHIRAL AMINOPHOSPHINE LIGANDS AND THEIR USE IN ASYMMETRIC HOMOGENEOUS HYDROGENATION OF ITACONIC ACID
Authors: Yamamoto Keiji , Tomita Akira , Tsuji Jiro 
Published: July 2006

Abstract
Optically active aminophosphines were prepared via ortho-directed metalation of appropriate arylamines followed by introduction of a diphenylphosphino group. These aminophosphines were used as ligands in the rhodium complex-catalyzed asymmetric hydrogenation of itaconic acid. Although moderate optical yields (up to 43% ee) were obtained, the stereochemical outcome with each ligand depended markedly on the chelate effect of the aminophosphines which played a significant role in both catalytic activity and enantioselectivity.
CHROMATOGRAPHIC SEPARATION OF NITROGEN ISOTOPES USING PURE WATER AS ELUTING AGENT
Authors: Kotaka Masahiro , Shono Tuyoshi , Kakihana Hidetake 
Published: July 2006

Abstract
Aqueous solutions of ammonia were passed through ion-exchange columns. In some experiments the column was packed with a strongly acidic cation exchanger Diaion SK-IB in magnesium form, and in the others a weakly acidic cation exchanger composed of succinylated aminododecylcellulose with 3-aminobenzeneboronic acids was used. The ammonium bands formed in the columns were eluted with pure water. It was found that: (1) Nitrogen-15 was enriched in the rear part of the band, and depleted in the front part. (2) The ammonia charged to the column packed with Diaion SK-IB was completely eluted with pure water.
PHOTOCHEMICAL SYNTHESIS OF NEW NITROGEN-CONTAINING POLYCYCLIC AROMATIC COMPOUNDS— NAPHTHO[2,3-c]CARBAZOLE AND ANTHRA[2,1-b]PYRROLE DERIVATIVES
Authors: Maruyama Kazuhiro , Mitsui Kiichiro , Otsuki Tetsuo 
Published: July 2006

Abstract
8,13-Naphtho[2,3-c]carbazoledione 3 and 6,11-anthra[2,1-b]pyrroledione 10, were synthesized in a good yield via photolysis of quinone and 1,1-diarylethylene, Reduction of 3 and 10 gave corresponding polycyclic aroma tics 4 and 11.
PHOTOCHEMICAL DIMERIZATION OF 2-ACYL-1,4-QUINONES
Authors: Miyagi Yo , Kitamura Kazuo , Maruyama Kazuhiro , Chow Yuan Lang 
Published: July 2006

Abstract
Upon irradiation 2-acyl-1,4-quinones (I) underwent a regiospecific condensation to give their dimers, polycyclic compounds (II). An alternative structure (II′), though it is compatible with the NMR spectra of the dimers, was excluded on the basis of converting one of the dimers to a 9,10-phenanthrenequinone derivative (IV). No condensation of I with dienophiles occurred.
FAR-INFRARED SPECTRUM AND PHASE TRANSITION OF CsSrCl3
Authors: Morioka Yoshiyuki , Nakagawa Ichiro 
Published: July 2006

Abstract
Temperature dependence of the far-infrared spectrum of CsSrCl3 has been measured. At high temperature the spectrum has three absorption bands, which is characteristic to the cubic perovskite-type structure. Lowering the temperature, one new band appears at 153 cm−1 . Other spectral change is not significant. The new band is interpreted as an i.r. active component of a f2u mode for the high temperature phase which undergoes a factor group splitting in a phase transition to the lower symmetry phase.
STABILIZATION OF PHOTOANODES IN ELECTROCHEMICAL PHOTOCELLS FOR SOLAR ENERGY CONVERSION
Authors: Fujishima Akira , Inoue Tooru , Watanabe Tadashi , Honda Kenichi 
Published: July 2006

Abstract
The stabilization of the semiconductor photoanodes by redox agents have been studied in the semiconductor/electrolyte system. A general interpretation of the experimental results is possible referring to the standard redox potentials (Eredox) of the reducing agents and to the electrochemical decomposition potentials (ED) of the semiconductors.
EMISSION OF LOW-ENERGY LUMINESCENCE FROM SURFACTANT MICELLES WITH AN AROMATIC CHROMOPHORE
Authors: Kajiwara Makoto , Mihara Satoru , Yudate Kohzo , Matsuo Taku 
Published: July 2006

Abstract
Fluorescence spectra of cationic surfactants, with a phenoxy group as a part of the molecular structure, were studied. On the formation of the micelles, luminescences with energy lower than that of the monomer were observed, and it was taken to indicate the presence of interactions involving photoexcited phenoxy group aligned in the micellar interior.
REDUCTIVE SILYLATION REACTIONS OF SULFIDES. A FACILE CONVERSION OF CARBON-SULFUR LINKAGES INTO CARBON-SILICON ONES
Authors: Kuwajima Isao , Abe Toru , Atsumi Kunio 
Published: July 2006

Abstract
It has been found that various phenyl sulfides undergo reductive silylation to afford the corresponding alkyltrimethylsilanes in good yield.
SYNTHESIS OF ETHYL α-(DIETHYLPHOSPHONO)ACRYLATE AND ITS HOMOLOGS: VERSATILE SYNTHETIC REAGENTS
Authors: Ide Junya , Endo Rokuro , Muramatsu Shigeki 
Published: July 2006

Abstract
Ethyl α-(diethylphosphono) acrylate (2a) and ethyl β-methyl-α-(diethylphosphono) acrylates (E-2b and Z-2b) were prepared. The cycloaddition reaction of 2a with salicylaldehyde gave 3-ethoxycarbonyl-3-chromenes (9).
STEREOCHEMISTRY OF THE ALKALINE HYDROLYSIS OF N-CHLOROSULFIMIDES TO SULFOXIMIDES
Authors: Akasaka Takeshi , Yoshimura Toshiaki , Furukawa Naomichi , Oae Shigeru 
Published: July 2006

Abstract
(−)-(S)-N-Chloro-S-o-methoxyphenyl-S-phenylsulfimide was prepared and its alkaline hydrolysis afforded the corresponding sulfoximide. This hydrolysis was found to proceed with a retention of configuration at the reaction center.
A HIGHLY SELECTIVE METHOD FOR THE SPECTROPHOTOMETRIC DETERMINATION OF CADMIUM(II) WITH DITHIZONE AND o-PHENANTHROLINE
Authors: Akaiwa Hideo , Kawamoto Hiroshi , Yoshimatsu Eiji 
Published: July 2006

Abstract
A new method for the separation of cadmium(II) from zinc(II) with dithizone in the presence o-phenanthroline was proposed. A green cadmium(II) dithizonate is extracted into chloroform at pH 2 and the green complex changes to red by shaking the extract with ammonia. The complete separation of cadmium(II) from zinc(II) is possible by the present method.
QUENCHING OF THE LUMINESCENT EXCITED STATE OF TRIS(2,2′-BIPYRIDYL)RUTHENIUM(II) WITH BROMONITROMETHANE
Authors: Oishi Sigero , Furuta Naoko 
Published: July 2006

Abstract
Linear Stern–Volmer plots were obtained for cathodic photocurrents from the quenching of excited tris(2,2′-bypyridyl)ruthenium(II) with bromonitromethane at an SnO2 electrode, and the resulting Ksv was in fair agreement with that for emission quenching, indicating that the quenching process occurs by the reductive cleavage of bromonitromethane. A nitromethylated product was formed in the presence of 1,4-dimethoxybenzene.
ASYMMETRIC SYNTHESIS OF δ-OXOCARBOXYLIC ACIDS BY THE MICHAEL REACTION USING (2R,3S)-3,4-DIMETHYL-5,7-DIOXO-2-PHENYLPERHYDRO-1,4-OXAZEPINE
Authors: Mukaiyama Teruaki , Hirako Yoshiyuki , Takeda Takeshi 
Published: July 2006

Abstract
(2R,3S)-3,4-Dimethyl-5,7-dioxo-2-phenylperhydro-1,4-oxazepine (I) was prepared from methyl hydrogen malonate and l-ephedrine hydrochloride using 2-chloro-1-methylpyridinium tosylate as a coupling reagent. The Michael reaction of (I) to 2-cyclopenten-1-one catalyzed by 1,8-diazabicyclo(5.4.0)undec-7-ene (DBU), followed by hydrolysis and decarboxylation gave highly optically pure 3-cyclopentanoneacetic acid.
PREPARATION OF VINYL CHLORIDES FROM ENOLIZABLE ALDEHYDES
Authors: Echigo Yoshiaki , Mukaiyama Teruaki 
Published: July 2006

Abstract
Treatment of enolizable aldehydes with 2-chloro-3-ethylbenzoxazolium tetrafluoroborate, triethylamine and tetraethylammonium chloride affords vinyl chlorides in good yields under mild conditions.
AROMATIC HYDROXYLATION OF 2,4,6-TRIDEUTERIOTOLUENE BY O(3P) ATOMS WITH THE NIH SHIFT OF DEUTERIUM
Authors: Hori Akira , Matsumoto Hiroyuki , Takamuku Setsuo , Sakurai Hiroshi 
Published: July 2006

Abstract
Hydroxylation of 2,4,6-trideuteriotoluene by O(3P) atoms gave mixtures of tri- and di-deuteriocresol in liquid phase and in gas phase. The retention values of deuterium of aromatic ring in cresols produced by the hydroxylation were similar to those reported with microsomes. The mechanism of the NIH shift via a σ-complex intermediate is proposed.
A COLOR REACTION OF AQUAHYDROGENETHYLENEDIAMINETETRAACETATORUTHENIUM(III) WITH SOME SULFUR COMPOUNDS
Authors: Yoshino Yukichi , Uehiro Takashi , Saito Masami 
Published: July 2006

Abstract
A new color reaction of [Ru(Hedta)(H2O)] with some compounds that contain groups C–SH or C=S has been found. Alkanethiols, cysteine, thiourea and thiosulfate assume pink to reddish brown color, while benzenethiols show blue color. It was suggested that the coloration is due to the anation of [Ru(Hedta)(H2O)] with sulfur-containing compounds.
ASYMMETRIC HYDROGENATION OF α-ACYLAMINOACRYLIC ACIDS BY THE RHODIUM(I) COMPLEX OF (1R,2R)-BIS(N-DIPHENYLPHOSPHINOMETHYLAMINO)CYCLOHEXANE
Authors: Hanaki Kazuhiro , Kashiwabara Kazuo , Fujita Junnosuke 
Published: July 2006

Abstract
A new rhodium(I)-(1R,2R)-bis(N-diphenylphosphinomethylamino)cyclohexane complex, the ligand of which is easily prepared from (1R,2R)-bis(methylamino)cyclohexane and chlorodiphenylphosphine, catalyzes asymmetric hydrogenation of some α-acylaminoacrylic acids to yield N-acylated amino acids with high optical purity; N-benzoyl-(S)-leucine, N-benzoyl-(S)-phenylalanine, and N-acetyl-(S)-phenylalanine are obtained in 93, 85, and 73% optical purity, respectively.
DIFFUSION OF SIMPLE IONS IN LYOTROPIC LIQUID CRYSTALS AND ORDINARY GELS IN RELATION TO THEIR STRUCTURES
Authors: Watanabe Norio , Mukai Misako , Tamamushi Bun-ichi 
Published: July 2006

Abstract
The diffusion velocities of simple ions: K+ Cl− into two types (lamellar and hexagonal) of lyotropic liquid crystals involved in the system: sodium dodecyl sulphate (SDS) + n-hexanol + water were measured. The results showed that the diffusion velocities into the lamellar type liquid crystals were greater than those into the hexagonal ones. The diffusion velocities for both types of liquid crystals were however found smaller than those into ordinary colloidal gels. The effect of added ions on the flow properties of the above two types of liquid crystals was examined and found different according to the difference in their ordered structures.
HIGH SELECTIVE CIS\ightleftharpoonsTRANS ISOMERIZATION OF TRI-SUBSTITUTED DOUBLE BOND BY RUTHENIUM ACETYLACETONATE
Authors: Fujita Yoshiji 
Published: July 2006

Abstract
Ruthenium acetylacetonate was found to be effective for high selective cis\ightleftharpoonstrans isomerization of tri-substituted double bond of geranylacetone, pseudoionone, ethyl geranylacetate etc., without any migration and hydrogenation of double bond.
PROMOTING EFFECT OF SELENIUM ON THE CATALYSIS OF LIQUID TELLURIUM IN THE DEHYDROGENATION OF POLYNUCLEAR HYDROCARBONS
Authors: Takahashi Katsumi , Ogino Yoshisada 
Published: July 2006

Abstract
An addition of small amount of selenium into the liquid tellurium has been found to bring about a pronounced elevation of the catalytic activity for the dehydrogenation of polynuclear hydrocarbons, i. e. tetralin, acenaphthene, 9,10-dihydroanthracene, 9,10-dihydrophenanthrene, 1,2,3,4,5,6,7,8-octahydrophenanthrene.
BROMINATION OF 9-ALLYLTRIPTYCENES: AN EXAMPLE OF ELECTROPHILIC OLEFINIC SUBSTITUTION
Authors: Hatakeyama Shiro , Mitsuhashi Tsutomu , Oki Michinori 
Published: July 2006

Abstract
Bromination of 9-allyl-1,2,3,4-tetrachlorotriptycene afforded a 4:1 mixture of substitution products and a normal addition product. Examination of the reactions of analogous compounds suggests that the result is most probably due to the through-space electronic effect of the chloro substituent in the peri-position.
HIGHLY EFFECTIVE CATALYTIC ASYMMETRIC HYDROGENATION OF ITACONIC ACID WITH NEW CATIONIC CHIRAL PYRROLIDINEPHOSPHINE–RHODIUM COMPLEXES
Authors: Achiwa Kazuo 
Published: July 2006

Abstract
Syntheses of new cationic chiral pyrrolidinephosphine–rhodium complexes and their application to the asymmetric hydrogenation of itaconic acid were described. Thus, PPPM-, BZPPM-, FPPM- and BPPM-Rh+ in the presence of triethylamine gave S-(−)-methylsuccinic acid in 87.1, 88.9, 94.2 and 93.6% optical yields respectively.
EFFECTIVE ASYMMETRIC HYDROGENATION OF ITACONIC ACID CATALYZED BY NEUTRAL AND CATIONIC RHODIUM(I) COMPLEXES WITH CHIRAL PYRROLIDINODIPHOSPHINE LIGAND
Authors: Ojima Iwao , Kogure Tetsuo , Achiwa Kazuo 
Published: July 2006

Abstract
Asymmetric hydrogenation of itaconic acid catalyzed by neutral and cationic rhodium(I) complexes with a chiral pyrrolidinodiphosphine, BPPM, was carried out to give (S)-(−)-methylsuccinic acid with 90–92 %e.e. in excellent yield. Enantioselectivity of the reaction was found to depend upon the amounts of triethyl amine added. In the presence of triethyl amine, the neutral catalyst is suggested to be converted to the cationic species.
A NEW SYNTHESIS OF ARYL t-BUTYL ETHERS
Authors: Masada Hiromitsu , Oishi Yutaka 
Published: July 2006

Abstract
Aryl t-butyl ethers were prepared in high yields by O-alkylations of phenols with t-butyl halides in the presence of pyridine or aliphatic amines for a few hours at 20–30 °C.
THE GEOMETRICAL ISOMERISM OF [CoBr(Hedta)]−
Authors: Ohba Kazuo , Fujita Junnosuke 
Published: July 2006

Abstract
The [CoBr(Hedta)]− complex prepared by the method of Schwarzenbach has been believed to consist of two geometric isomers. However, it was found that one of these two isomers was not the bromo complex, but the chloro complex.
STUDIES ON THE SYNTHESES OF SESQUITERPENE LACTONES IV. TOTAL SYNTHESIS OF SAUSSUREA LACTONE
Authors: Ando Masayoshi , Tajima Kiyoshi , Takase Kahei 
Published: July 2006

Abstract
Saussurea lactone, a typical elemanolide, has been synthesized via a novel fragmentation reaction of 3α,4α-epoxy-1β-mesyloxy-5αH, 6β, 11βH-eudesman-6,13-olide with aluminium isopropoxide in toluene.
OLIGOMERIZATION OF 3-HEXYNE BY NICKEL(0) COMPLEXES UNDER CO2. INCORPORATION OF CO2 AND NOVEL CYCLOTRIMERIZATION
Authors: Inoue Yoshio , Itoh Yoshio , Hashimoto Harukichi 
Published: July 2006

Abstract
Tetraethyl-2-pyrone 1 was formed in good yields on the reaction of 3-hexyne with CO2 in the presence of Ni(COD)2–Ph2P(CH2)4PPh2 (COD=1,5-cyclooctadiene), and in case of Ni(COD)2–PPh3 a novel cyclotrimer, pentaethyl-5-propenylcyclopentadiene 2 was obtained selectively.
REDOX PROPERTIES OF TRISILVER DODECAMOLYBDOPHOSPHATE CATALYST
Authors: Tsuneki Hideaki , Niiyama Hiroo , Echigoya Etsuro 
Published: July 2006

Abstract
Redox properties of Ag3PMo12O40 were studied by means of IR spectroscopy combined with 18O-tracer technique. Oxygen of innercore oxy-anion, PO43− , were not removed by reduction with H2, although IR spectra due to PO43− drastically changed. Exchange of terminal and bridge-bonded oxygen was so fast under the condtion employed here that all the oxygens equally participated for the redox cycles of the compound.
DIANION OF α-MERCAPTO-γ-BUTYROLACTONE: AN EFFICIENT REAGENT FOR THE STEREOSELECTIVE SYNTHESIS OF α-ALKYLIDENE-γ-BUTYROLACTONES FROM CARBONYL COMPOUNDS
Authors: Tanaka Kazuhiko , Uneme Hideki , Yamagishi Nobuyuki , Ono Noboru , Kaji Aritsune 
Published: July 2006

Abstract
Dianion of α-mercapto-γ-butyrolactone was successfully generated by treating α-mercapto-γ-butyrolactone with lithium diisopropylamide-N,N,N′,N′-tetramethylethylenediamine at −78°C in THF. This dianion was found to be highly reactive toward electrophilic reagents. A new methodology for the stereoselective synthesis of α-alkylidene-γ-butyrolactones by one-pot procedure has been developed.
THE NEW METHOD FOR DETERMINATION OF THE STABILITY CONSTANTS OF CYCLODEXTRIN–PROSTAGLANDIN INCLUSION COMPLEXES BY LIQUID CHROMATOGRAPHY
Authors: Uekama Kaneto , Hirayama Fumitoshi , Irie Tetsumi 
Published: July 2006

Abstract
Stability constants (K) of cyclodextrin–prostaglandin complexes were determined by liquid chromatography. The retention times of some prostaglandins following the binding to α- and β-cyclodextrins in aqueous mobile phase on anion exchange support were quantitatively treated to yield the K values. The results were fair agreement with those obtained by spectroscopic and solubility methods.
A REGIOSELECTIVE COUPLING REACTION OF ALLYL PYRIDYL ETHERS WITH GRIGNARD REAGENTS
Authors: Mukaiyama Teruaki , Yamaguchi Masahiko , Narasaka Koichi 
Published: July 2006

Abstract
A regioselective coupling reaction of Grignard reagents with allyl pyridyl ethers in the presence of MgBr2 is reported. Grignard reagents reacted easily with primary allyl ethers to afford C-1 alkylated products (SN2 reaction), and also reacted with secondary and tertiary allyl ethers to afford C-3 alkylated products (SN2′ reaction).
SURFACE PROPERTIES OF 12-MOLYBDOPHOSPHORIC ACID CATALYST
Authors: Misono Makoto , Konishi Yasuo , Furuta Motonobu , Yoneda Yukio 
Published: July 2006

Abstract
Surface properties and catalytic activity for butene isomerization have been investigated for 12-molybdophosphoric acid. The surface area changed reversibly by dehydration and hydration below 300°C, but irreversible destruction was caused at 400°C. The catalytic activities per unit surface area were nearly constant. From these results and infrared spectra of pyridine adsorbed, strong protonic acidity probably of nearly uniform acid strength was concluded.
SYNTHESIS OF SUBSTITUTED VINYL SULFONES VIA DEACYLATION
Authors: Kotake Hiroshi , Inomata Katsuhiko , Sumita Manabu 
Published: July 2006

Abstract
It was found that the anions of β-ketosulfones reacted with formaldehyde to give the corresponding vinyl sulfones via deacylation, which provides a new preparative method for olefinic bonds.
ALKYLATION OF THE DIANION OF 2,4-DIMETHOXYCARBONYL-3-METHYL-2-CYCLOPENTENONE AND ITS APPLICATION TO THE SYNTHESIS OF THE COREY’S TYPE PG INTERMEDIATES
Authors: Ide Junya , Inoue Kenji , Sakai Kiyoshi 
Published: July 2006

Abstract
The alkylation of 2,4-dimethoxycarbonyl-3-methyl-2-cyclopentenone (1) by the dianion-method provides regiospecifically and stereoselectively alkylated products (3a–i) in moderate yields. The alkylated product (3g) was transformed into the Corey’s lactones (6 and 9) for 11-methyl- and 11,11-dimethyl-11-deoxy-PGs, respectively.