bluuebunny/crossref_metadata_2025_split huggingface dataset:
FORMATION OF NOVEL CAGE COMPOUNDS VIA END0-[3 + 2] CYCLOADDUCTS BETWEEN THIAZOLIUM N-METHYLIDES AND METHYLENECYCLOPROPENES
Authors: Tsuge Otohiko , Shimoharada Hiroshi , Noguchi Michihiko , Kanemasa Shuji 
Published: July 2006

Abstract
Thiazolium N-phenacylide and N-dicyanomethylide react with a methylenecyclopropene bearing an aryl group on the 4-position to give novel cage compounds, 6,8-thiazapentacyclo[6.3.1.01,10.05,12.07,11]dodecenes. The reaction proceeds via an intramolecular Diels–Alder reaction of the initially formed endo-[3 + 2] cycloadducts, followed by a hydrogen shift.
OPTICALLY ACTIVE F-2-ISOPROPOXYPROPIONIC ACID : A NOVEL DERIVATIZING AGENT FOR GAS CHROMATOGRAPHIC ANALYSIS
Authors: Kawa Hajimu , Yamaguchi Fumihiko , Ishikawa Nobuo 
Published: July 2006

Abstract
F-2-Isopropoxypropionic acid (PIPA) was resolved into enantiomers via its diastereomeric (+)-1-phenylethylamide. (+)-F-2-Isopropoxypropionyl derivatives of several chiral 1-arylalkylamines and α-amino acids were effectively resolved by gas chromatography at low temperature.
AN EFFICIENT REGIO- AND STEREOSPECIFIC ALKENYLATION OF PHENOLIC ETHERS BY PRENYL AND GERANYL DIISOPROPYL PHOSPHATES
Authors: Araki Shuki , Manabe Shin-ichi , Butsugan Yasuo 
Published: July 2006

Abstract
Prenyl and geranyl diisopropyl phosphates readily alkenylate a variety of phenolic ethers regio- and stereospecifically without any appreciable side reactions.
THE LOCAL TOPOLOGICAL DEPENDENCE OF RING CURRENT IN POLYCYCLIC AROMATIC HYDROCARBONS
Authors: Mizoguchi Noriyuki 
Published: July 2006

Abstract
Ring currents in individual hexagons of many catacondensed hydrocarbons were calculated systematically. It was found that the values of ring currents are distributed within the four different ranges correponding to the four classes of hexagon which are classified by the local topological structure.
ELECTRODE REACTION OF METHYL VIOLOGEN COUPLED WITH POLYSTYRENE SULFONATE
Authors: Kobayashi Katsuyoshi , Niki Katsumi 
Published: July 2006

Abstract
The addition of polystyrene sulfonate (PSS) to methyl viologen (MV2+) leads to a reversible one-electron transfer reaction of MV2+ without the complication due to the adsorption of both MV2+ and MV.+. MV2+ molecules coupled with a PSS molecule act as equivalent and weakly-interacting sites. The interaction between active sites is allosteric.
A CONVERSION OF HUMULENE TO HIRSUTENE
Authors: Misumi Shunjiro , Matsushima Hiroshi , Shirahama Haruhisa , Matsumoto Takeshi 
Published: July 2006

Abstract
Humulene has been transformed into 1,4,4-trimethyltricyclo [6.2.1.02,6]undecan-ll-one, a key intermediate for the synthesis of hirsutene, through a process which simulates the biosynthetic pathway assumed for the latter sesquiterpene.
LASER RAMAN SPECTROSCOPIC STUDY OF A DIABETIC CATARACTOUS LENS
Authors: Ozaki Yukihiro , Mizuno Aritake , Kamada Yoshio , Itoh Koichi , Iriyama Keiji 
Published: July 2006

Abstract
Raman spectrum of a diabetic cataractous lens was measured and compared with the spectrum of a normal lens. These spectra showed an appreciable difference in the relative intensity of the tyrosine doublet near 840 cm−1, indicating that the strength of hydrogen bonding by some tyrosyl residues changed upon lens opacification.
EFFECT OF THE EXCITATION DURATION ON THE DECAY BEHAVIOR OF THE TEMPERATURE-INDEPENDENT DELAYED FLUORESCENCE
Authors: Taen Shoji , Gondo Yasuhiko 
Published: July 2006

Abstract
Under different excitation durations, the decay law has been studied on the temperature-independent delayed fluorescence in the mixed crystals of benzo[f]quinoline in biphenyl host at 77 K. An extreme reduction of the excitation duration has been found to lead to a decay law of the form, IDF(t) = IDF(0)/(1 + at)2.
ROLE OF WATER IN ALUMINA-ASSISTED SOLID–LIQUID INTERFACIAL REACTION
Authors: Ando Takashi , Kawate Takehiko , Yamawaki Junko , Hanafusa Terukiyo 
Published: July 2006

Abstract
Heterogeneous reaction between octyl bromide and alkali acetate solid in toluene is facilitated in the presence of alumina and a trace of water. The reactivity shows a maximum for a certain amount of water, and this optimum amount varies depending on the alkali metal cation. Role of water in the interfacial reaction is discussed.
A NEW PALLADIUM CATALYZED AROMATIC ACETONYLATION BY ACETONYLTRIBUTYLTIN
Authors: Kosugi Masanori , Suzuki Mikio , Hagiwara Isao , Goto Katsuhisa , Saitoh Kyoko , Migita Toshihiko 
Published: July 2006

Abstract
The reaction of acetonyltributyltin, prepared from tributyltin methoxide and isopropenyl acetate in situ, with aryl bromide in the presence of a catalytic amount of PdCl2(o-Tolyl3P)2 was found to give arylacetones in good yields.
INFRARED AND RAMAN SPECTROSCOPIC STUDIES ON MOLECULAR CONFORMATIONS OF F(CH2)nF (n=3–6)
Authors: Matsuura Hiroatsu , Sakakibara Masaaki , Murata Hiromu 
Published: July 2006

Abstract
The infrared and Raman spectra of F(CH2)nF (n=3–6) were measured and analyzed on the basis of the normal coordinate treatment. The spectral analyses indicated that the molecule in the solid state takes the gauche-gauche conformation for n=3, gauche-trans-gauche’ for n=4, gauche-trans-trans-gauche for n=5, and gauche-trans-trans-trans-gauche’ for n=6.
NEW SYNTHESIS OF METHYL 2-TRIORGANOSILYL-3-BUTENOATES AS A NEW SYNTHON OF 3-METHOXYCARBONYLALLYL ANION
Authors: Naruta Yoshinori , Uno Hidemitsu , Maruyama Kazuhiro 
Published: July 2006

Abstract
Methyl 2-triorganosilyl-3-butenoates, which are selectively obtained from the carboxylation of the corresponding allylsilanes via allylic aluminates, react with various kinds of electrophiles to give γ substituted (E)-α,β-unsaturated esters in highly regio and stereoselective manner with the aid of a Lewis acid.
PROTECTION OF IMIDE GROUP OF URACIL MOIETY BY MEANS OF 2,2,2-TRICHLORO-TERT-BUTYLOXYCARBONYL CHLORIDE: A SELECTIVE SYNTHESIS OF 2′-O-METHYLURIDINE
Authors: Kamimura Takashi , Masegi Tsukio , Hata Tsujiaki 
Published: July 2006

Abstract
2,2,2-Trichloro-tert-butyloxycarbonyl group (TCBOC) was useful protecting group for the protection of imide function of uracil moiety. Starting from N3-TCBOC uridine derivative, 2′-O-methyluridine was selectively synthesized without formation of N3-methyluridine derivatives.
SYNTHESIS AND ELECTROCHEMICAL CHARACTERISTIC OF 1,2-BIS(PHENALEN-1-YLIDENE)ETHENE. AN AMPHOTERIC FOUR-STAGE REDOX HYDROCARBON
Authors: Nakasuji Kazuhiro , Yoshida Keiji , Murata Ichiro 
Published: July 2006

Abstract
Electrochemical evidence presents that both two-stage oxidation and reduction steps (as an amphoteric four-stage redox system) are possible for 1,2-bis(phenalen-1-ylidene)ethene which has been synthesized starting from an isomeric mixture of diphenalenylacetylene through hydride abstraction and deprotonation procedure.
TRANSITION METAL PHOSPHINE COMPLEXES POSSESSING A PHASE TRANSFER FUNCTION. PREPARATION AND PROPERTIES OF POLYETHER-SUBSTITUTED PHOSPHINES AND THEIR PALLADIUM COMPLEXES
Authors: Okano Tamon , Yamamoto Manabu , Noguchi Takeo , Konishi Hisatoshi , Kiji Jitsuo 
Published: July 2006

Abstract
For the purpose of endowing transition metal phosphine complexes with a phase transfer function, tertiary phosphines modified by polyether chains were prepared, and their properties were examined. The palladium complexes of these phosphines were very efficient as catalysts for the reduction of bromobenzene with sodium hydride under a liquid–solid two-phase condition.
EFFECTIVE SUPPORTED-In2O3 FOR THE PRODUCTION OF HYDROGEN FROM WATER BY THE REDUCTION-OXIDATION CYCLE OF In2O3
Authors: Otsuka Kiyoshi , Shibuya Shin-ichi , Morikawa Akira 
Published: July 2006

Abstract
Eleven kinds of carriers for In2O3 have been tested for the production of hydrogen from water by a reduction and oxidation cycle of In2O3. Of these, the most effective carriers were TiO2, ZrO2, active carbon and ZnO, because the high enhancing effects on the rates of reduction and oxidation and the high final yields of hydrogen by the reduced In2O3 have been observed by using these carriers.
A HIGHLY ACTIVE SUPPORTED CATALYST FOR OLEFIN HYDROGENATION FROM COLLOIDAL NICKEL BORIDE
Authors: Nakao Yukimichi 
Published: July 2006

Abstract
Supported catalysts, which were prepared from colloidal nickel boride by immobilizing on inorganic substances such as Mg(OH)2, exhibited higher activity for olefin hydrogenation than a sol-type catalyst of colloidal nickel boride protected by polyvinylpyrrolidone.
PHOTOLUMINESCENCE DURING ADSORPTION OF AMMONIA AND OTHER SIMPLE MOLECULES ON AN ACTIVATED EUROPIUM ION-EXCHANGED MORDENITE
Authors: Arakawa Tsuyoshi , Takakuwa Midori , Shiokawa Jiro 
Published: July 2006

Abstract
It has been studied the adsorption of simple molecules on an activated Eu(III) ion-exchanged mordenite by the measurement of the luminescence of Eu2+ ion which was produced by the evacuation at 500°C. The emission peak for Eu2+ ion shifts to shorter wavelength on the exposure of ammonia and other simple molecules. The magnitude of the shift is correlated to the specific dielectric constant of adsorbates.
EFFICIENT SYNTHESIS OF ACETOXYFIMBROLIDES AND BECKERELIDES ANALOGS
Authors: Kotsuki Hiyoshizo , Monden Mitsugu , Ochi Masamitsu 
Published: July 2006

Abstract
An efficient synthesis of acetoxyfimbrolides and beckerelides analogs has been developed via peracid oxidation of 2-methyl-4-(1-acetoxybutyl)furan as the key synthetic step. Antimicrobial activity of the products has also been tested.
NOVEL PROPELLANE TYPE ADDUCTS OF 3-METHYL-10-THIAISOALLOXAZINE
Authors: Maki Yoshifumi , Tanabe Miyuki , Sako Magoichi , Hirota Kosaku , Harano Kazunobu 
Published: July 2006

Abstract
The reaction of 3-methyl-10-thiaisoalloxazine (2) with 1,2-ethanedithiol and 2-mercaptoethanol gave novel propellane type adducts and 3a and 3b, respectively.
MELAMINE-HYDROGEN FLUORIDE SOLUTION. A HIGHLY EFFECTIVE AND CONVENIENT HYDROFLUORINATION REAGENT OF ALKENES
Authors: Yoneda Norihiko , Abe Takafumi , Fukuhara Tsuyoshi , Suzuki Akira 
Published: July 2006

Abstract
A solution of 14% (w/w) melamine in 86% (w/w) hydrogen fluoride has been found to be stable, and more convenient and effective hydrofluorinating reagent for alkenes than those of other organic amine-hydrogen fluoride reagents.
SYNTHESIS OF ACETIC ANHYDRIDE BY VAPOR PHASE CARBONYLATION OF METHYL ACETATE WITH A NICKEL-ACTIVE CARBON CATALYST
Authors: Fujimoto Kaoru , Shikada Tsutomu , Miyauchi Michiharu , Tominaga Hiro-o 
Published: July 2006

Abstract
Vapor phase carbonylation of methyl acetate on nickel-active carbon catalyst was studied under pressurized conditions in the presence of methyl iodide as a promoter. High pressure was essential for the acetic anhydride formation. A fairly large amount of acetic acid, by-product, was also formed under the water-free reaction condition.
COMPLETE CHROMATOGRAPHIC RESOLUTION OF TRIS(ACETYLACETONATO)COBALT(III) AND CHROMIUM(III) ON AN OPTICALLY ACTIVE POLY(TRIPHENYLMETHYL METHACRYLATE) COLUMN
Authors: Okamoto Yoshio , Honda Shiro , Yashima Eiji , Yuki Heimei 
Published: July 2006

Abstract
Tris(acetylacetonato)Co(III) and Cr(III) were completely resolved by HPLC on a (+)-poly(triphenylmethyl methacrylate) column. Optical data of pure enantiomers were obtained and the structure of the polymer was discussed on the basis of the results of the resolution.
REACTION OF ORGANOCADMIUM REAGENTS WITH ETHYL CYANOFORMATE: PREPARATION OF α-KETO ESTERS
Authors: Akiyama Yasunobu , Kawasaki Tomomi , Sakamoto Masanori 
Published: July 2006

Abstract
Organocadmium reagents reacted with the cyano-function of ethyl cyanoformate in the presence of ZnCl2 to afford the corresponding α-keto esters.
A NOVEL BASE CATALYZED REARRANGEMENT OF PSEUDOANISATIN. X-RAY CRYSTALLOGRAPHIC ANALYSIS OF THE REARRANGEMENT PRODUCT
Authors: Kouno Isao , Irie Hiroshi , Kawano Nobusuke , Taga Tooru , Osaki Kenji 
Published: July 2006

Abstract
The structure of a base catalyzed rearrangement product of pseudoanisatin has been determined by an X-ray crystallographic analysis as the formula, indicating a novel stereoselective reaction which includes steric inversion at C-3 and C-4. The reaction mechanism is discussed.
PHOTOINDUCED ELECTRON TRANSPORT ACROSS LIPOSOMAL MEMBRANE USING CHLOROPHYLLIN A
Authors: Hidaka Seiji , Toda Fujio 
Published: July 2006

Abstract
Photoinduced electron transport across the bilayer lipid membrane of liposome was studied by using chlorophyllin a, a water-soluble chlorophyll derivative, without an electron carrier. The reduction of ferricyanide by sodium ascorbate was observed on irradiation with visible light under anaerobic condition.
COOPERATIVE SENSITIZATION IN PHOTOREDUCTION OF VIOLOGENS BY METAL COMPLEXES AND CHARGE-TRANSFER COMPLEXES ON AMPHIPATHIC VIOLOGEN MICELLES
Authors: Nagamura Toshihiko , Takeyama Naoki , Matsuo Taku 
Published: July 2006

Abstract
Amphipathic viologens having alkyl chain with a naphthyloxy group formed micelles and showed charge-transfer (CT) absorption. The quantum yield of photoreduction of viologens sensitized by metal complex in these micelles was about twice of the sum of those sensitized by metal complex in micelle without CT and by CT-complex alone. These results strongly indicated the cooperative action between CT- and metal complexes.
INTENTIONAL SYNTHESES OF UTAHIN, A CONIFER CONSTITUENT OF A C20-DITROPONOFURAN, VIA THE OXIDATIVE CONDENSATION
Authors: Takeshita Hitoshi , Kusaba Tomoyuki , Mori Akira 
Published: July 2006

Abstract
Utahin, previously characterized as a constituent of Juniperus utahensis, has been prepared by a biomimetic oxidation of hinokitiol in addition to the coupling reactions of 4-isopropyl-p-tropoquinone with 5-hydroxyhinokitiol.
SYNTHETIC APPROACH TOWARD MITOMYCINS. SYNTHESIS OF 9-BENZYLOXYMETHYL-5-METHOXY-4-METHYL-3H-PYRROLO[1,2-a]INDOL-4,5-DIONE
Authors: Naruta Yoshinori , Nagai Naoshi , Maruyama Kazuhiro 
Published: July 2006

Abstract
2-Azido-3-(1′-benzyloxymethyl-2′,4′-pentadienyl)-5-methoxy-6-methyl-1,4-benzoquinone is prepared and its thermal decomposition under the presence of Cu(acac)2 affords the corresponding 3H-pyrrolo[1,2-a]indol-5,8-dione, which is the important precursor for mitomycin synthesis.
AN IMPROVED METHOD TO PREPARE CATALYSTS FOR THE SELECTIVE DECARBONYLATION OF FURAN-2 CARBOXALDEHYDE INTO FURAN
Authors: Lejemble Philippe , Maire Yolande , Gaset Antoine , Kalck Philippe 
Published: July 2006

Abstract
We are able to produce pure furan and pure carbon monoxide from furan-2 carboxaldehyde using an improved catalyst. This new catalyst (Pd/C–K2CO3) is activated by UV irradiation at 254 nm for 1 h.
SEPARATION OF MOLYBDENUM(VI) AND VANADIUM(V) BY USE OF POLYSTYRENE RESINS WITH A FUNCTIONAL GROUP HAVING BIS(2-HYDROXYETHYL)AMINO AND BIS(PHOSPHONOMETHYL)AMINO MOIETY
Authors: Nishizawa Masato , Yokoyama Toshiro , Kimura Tetsuo , Suzuki Toshishige M 
Published: July 2006

Abstract
Styrene–divinylbenzene copolymers containing bis(2-hydroxyethyl)amino and bis(phosphonomethyl)amino moiety have been synthesized and applied to the recovery of molybdenum(VI) and/or vanadium(V) from aqueous solution. The former resin is particularly effective for the separation of molybdenum(VI) and vanadium(V) by the column method owing to its high adsorption capacity and rapid exchange.
THIENOAZATROPONE: SYNTHESIS OF 7-CHLORO-8H-THIENO[3,2-c]AZEPIN-8-ONE
Authors: Satake Kyosuke , Kimura Masaru , Morosawa Shiro 
Published: July 2006

Abstract
A thienoazatropone, 7-chloro-8H-thieno[3,2-c]azepin-8-one(5) is synthesized from 4,5-dihydro-8H-thieno[3,2-c]azepin-8-one(2) using t-butyl hypochlorite. In addition, some physical properties of 5 are disscussed.
SYNTHESIS AND ELECTRONIC PROPERTIES OF THE NEUTRAL η3-PHENALENYL PALLADIUM ACETYLACETONATE COMPLEX1)
Authors: Nakasuji Kazuhiro , Yamaguchi Masakazu , Murata Ichiro , Tatsumi Kazuyuki , Nakamura Akira 
Published: July 2006

Abstract
The first neutral η3-phenalenyl acetylacetonate complex has been synthesized from the reaction of [Pd(phenalenyl)Cl]2 with thallous acetylacetonate and its structure and electronic properties are discussed.
BIOSYNTHESIS OF CYCLIC MONOTERPENOIDS. THE PIVOTAL ACYCLIC PRECURSOR FOR THE CYCLIZATION LEADING TO THE FORMATION OF α-TERPINEOL AND LIMONENE IN MENTHA SPICATA AND CITRUS NATSUDAIDAI
Authors: Suga Takayuki , Hirata Toshifumi , Okita Hitoshi , Tsuji Kazunori 
Published: July 2006

Abstract
As a result of making a direct comparison among the incorporations of the pairs of 14C- and 3H-labeled linalyl, geranyl, and neryl pyrophosphates into α-terpineol and limonene in the cell-free extract of Mentha spicata and Citrus natsudaidai, respectively, the linalyl pyrophosphate was found to be the most pivotal, immediate precursor for the cyclization leading to the formation of the cyclic monoterpenoids.
GENERAL TRIPLE RESONANCE OF DIPHENYL NITROXIDE
Authors: Deguchi Yasuo , Okada Keiichi , Yamauchi Jim , Fujii Kanae 
Published: July 2006

Abstract
General triple resonance spectra of diphenyl nitroxide have been observed in ethylbenzene at −90 °C by means of the ENDOR spectrometer with a TM110 mode cavity. The signal intensity was greatly influenced by the pumping frequency set on each of the ENDOR lines. The results indicate that two hyperfine couplings of the meta and para or ortho positions have opposite signs.
SELECTIVE HYDROGENATION OF ACROLEIN TO ALLYL ALCOHOL CATALYZED BY RANEY-TYPE SILVER–ZINC CATALYST
Authors: Nagase Yoshinori , Hattori Hideshi , Tanabe Kozo 
Published: July 2006

Abstract
A Raney-type silver-zinc (1:1 wt. ratio) catalyst was found to exhibit a high activity and selectivity for the hydrogenation of acrolein to allyl alcohol, 70% conversion and 90% selectivity being observed in 90 min at 120 °C. Addition of small amount of Fe3+ to the catalyst resulted in an increase in the selectivity to 95% with a slight decrease in activity.
KUMAUSALLENE, A NEW BROMOALLENE FROM THE MARINE RED ALGA LAURENCIA NIPPONICA YAMADA
Authors: Suzuki Teruaki , Koizumi Kuniko , Suzuki Minoru , Kurosawa Etsuro 
Published: July 2006

Abstract
Kumausallene, a new C15-bromoallene has been isolated from the title alga, and its structure was established on the basis of the spectral properties and chemical degradation.
NOVEL TYPE OF TRANSFORMATIONS OF α-AZIDOSTYRENE DERIVATIVES AND 3-ARYL-2H-AZIRINES IN THE PRESENCE OF HEXACARBONYLMOLYBDENUM
Authors: Nitta Makoto , Kobayashi Tomoshige 
Published: July 2006

Abstract
The reaction of α-azidostyrene derivatives with hexacarbonylmolybdenum was found to give 2,5-diarylpyrroles and acetophenone derivatives via a complexed 1-arylvinylnitrene intermediate, while that of 3-aryl-2H-azirines gave 2,4-diarylpyrroles in addition to acetophenone derivatives and 2,5-diarylpyrazines.
SYNTHESIS OF AZULENO[1,2-b]- AND AZULENO[1,2-c]THIOPHENES BY THE REACTIONS OF 2H-CYCLOHEPTA[b]FURAN-2-ONES WITH ENAMINES OF 3-OXOTETRAHYDROTHIOPHENES
Authors: Fujimori Kunihide , Fujita Takefumi , Yamane Kameji , Yasunami Masafumi , Takase Kahei 
Published: July 2006

Abstract
New heterocyclic compounds, azuleno[1,2-b]- and azuleno[1,2-c]thiophene, are synthesized by the reaction of 3-methoxycarbonyl-2H-cyclohepta[b]furan-2-one with morpholino enamines of 3-oxotetrahydrothiophene, followed by dehydrogenation of resulting dihydrocompounds with 2,3-dichloro-5,6-dicyano-p-benzoquinone.
OXIDATIVE ADDITION OF ALLYL-CHALCOGEN (O, S, Se) BONDS TO PALLADIUM(0). ISOLATION OF THE OXIDATIVE ADDITION PRODUCTS
Authors: Yamamoto Takakazu , Akimoto Mitsuru , Yamamoto Akio 
Published: July 2006

Abstract
Allyl phenyl ether reacts with Pd(PCy3)2 to yield an oxidative addition product, Pd(η-C3H5)(OPh)(PCy3), with formation of a phosphonium salt. Allyl phenyl sulfide and selenide oxidatively add to Pd(PCy3)2 to give binuclear complexes, Pd2(μ-C3H5)(μ-ZPh)(PCy3)2 (Z = S, Se). Allyl alcohol undergoes dehydration reaction on interaction with Pd(PCy3)2 to give Pd(1-2:6-7-η-diallyl ether)(PCy3).
THE STEREOSELECTIVE SYNTHESIS OF 2,3-CIS-DIHYDROXY-γ-BUTYROLACTONES BY THE OXIDATION OF γ-BUTENOLIDES WITH KMnO4-CROWN ETHER
Authors: Mukaiyama Teruaki , Tabusa Fujio , Suzuki Keisuke 
Published: July 2006

Abstract
Oxidation of γ-butenolides was effected by KMnO4-crown ether to afford the corresponding 2,3-cis-dihydroxy-γ-butyrolactones in high yields. High stereoselectivity was observed in cases when bulky substituents were introduced at the γ-position of the butenolides.
ELECTROCATALYTIC REDUCTION OF OXYGEN ON COBALT-DOPED POLYPYRROLE FILMS
Authors: Ikeda Osamu , Okabayashi Katsuaki , Tamura Hideo 
Published: July 2006

Abstract
A polypyrrole film electrochemically deposited on metal electrodes from an acetonitrile solution containing pyrrole, cobalt(II) acetate, and lithium perchlorate shows the electrocatalytic activity for oxygen reduction. It is found that this polymer film contains cobalt species in the polymer structure.
PHOTOACOUSTIC OBSERVATION OF SOLID–LIQUID INTERFACE BY MEANS OF TOTAL INTERNAL REFLECTION TECHNIQUE
Authors: Hinoue Teruo , Shimahara Yutaka , Yokoyama Yu 
Published: July 2006

Abstract
Photoacoustic signal induced in a thin region on the solution side at a glass-dye solution interface was measured by changing an angle of incidence. It was contemplated that the method could be extended to observation within the effective thickness as small as 100 nm and on the solution of as low concentration as 10−5 in absorbance.
ASYMMETRICAL REDUCTION OF PERFLUOROALKYLATED KETONES, KETOESTERS AND VINYL COMPOUNDS WITH BAKER’S YEAST
Authors: Kitazume Tomoya , Ishikawa Nobuo 
Published: July 2006

Abstract
Reduction of perfluoroalkylated ketones, ketoesters and vinyl compounds with baker’s yeast was studied. The ketones and β-ketoesters were asymmetrically reduced to give optically active perfluoroalkylated carbinols and hydroxyesters, while the vinyl compounds were reduced to perfluoroalkylated alkanes.
3-BENZYLIDENE-2,4-BIS(TRIMETHYLSILYLOXY)-1,4-PENTADIENE; SYNTHESIS AND ITS DIENE-TRANSMISSIVE DIELS–ALDER REACTION
Authors: Tsuge Otohiko , Wada Eiji , Kanemasa Shuji 
Published: July 2006

Abstract
A novel cross-conjugated triene, 3-benzylidene-2,4-bis(trimethylsilyloxy)-1,4-pentadiene, was synthesized and the multiple Diels–Alder cycloaddition reactions to acetylenic dienophiles leading to the dihydronaphthols were demonstrated.
14N ENDOR OF DI-t-BUTYL NITROXIDE
Authors: Yamauchi Jun , Deguchi Yasuo 
Published: July 2006

Abstract
ENDOR spectra of di-t-butyl nitroxide have been observed at −104°C in heptane and two ENDOR lines only due to 14N nucleus have been detected. The observed intensity indicates that cross relaxation is an important means of spin relaxation as has been revealed in some alicyclic nitroxide radicals.
FACILE PHOTOGENERATION OF COORDINATTVELY UNSATURATED ACTIVE SPECIES FROM A HYDRIDOPHOSPHONITECOBALT(I) COMPLEX AND ITS APPLICATION TO DOUBLE-BOND MIGRATION OF OLEFIN
Authors: Onishi Masayoshi , Hiraki Katsuma , Matsuda Masahiko , Fukunaga Tetsuo 
Published: July 2006

Abstract
Pyrex-filtered irradiation of a thermally inert complex [CoH[PPh(OMe)2]4] dissociated PPh(OMe)2 from cobalt without cleavage of a hydrido–cobalt bond, yielding an active species “CoH[PPh(OMe)2]3”. The photogenerated species caused double-bond migration of 3-phenylpropene to (E)- and (Z)-1-phenylpropenes.
HIGHLY ENANTIOSELECTIVE ALDOL-TYPE REACTION OF 3-ACETYLTHIAZOLIDINE-2-THIONE WITH ACHIRAL ALDEHYDES
Authors: Iwasawa Nobuharu , Mukaiyama Teruaki 
Published: July 2006

Abstract
A highly enantioselective aldol-type reaction forming various β-hydroxy carbonyl compounds from 3-acetylthiazolidine-2-thione and achiral aldehydes is achieved via divalent tin enolate employing chiral diamine derived from (S)-proline as a ligand.
SELECTIVITIES OF GROUP VIII METALS FOR THE HYDROGENATION OF FORMALDEHYDE AND THE EFFECT OF SUPPORT AND PROMOTER
Authors: Aika Ken-ich , Sekiya Harutaka , Ozaki Atsumu 
Published: July 2006

Abstract
The reaction of HCHO over group VIII metals was studied. The main products obtained with powder catalysts were CO and CH3OH, while CH4 was formed at higher temperatures. The CH3OH selectivity of the powder catalysts correlated well with the heat of formation of oxide. Although the SiO2 support did not affect the CH3OH selectivity of the metal, ZnO and Cs2O improved it remarkably. Cu–Zn–Al catalysts are quite active for CH3OH formation.