bluuebunny/crossref_metadata_2025_split huggingface dataset:
AN IMPROVED ASYMMETRIC SYNTHESIS OF (R)-(−)-2-ACETYL-5,8-DIMETHOXY-1,2,3,4-TETRAHYDRO-2-NAPHTHOL. A VERSATILE KEY SYNTHETIC INTERMEDIATE OF OPTICALLY ACTIVE ANTHRACYCLINONES
Authors: Suzuki Michiyo , Kimura Yoshikazu , Terashima Shiro 
Published: July 2006

Abstract
The bromolactonization of the (−)-acetals prepared from readily available 2-acetyl-5,8-dimethoxy-3,4-dihydronaphthalene and (1R,2R)-(+)-tartaric acid diamide derivatives was found to proceed highly diastereoselectively, giving the seven-membered bromolactones. The bromolactones could be effectively converted to the title compound, &gt;95%ee, in one-pot reaction.
CATHODIC ESTERIFICATION OF CARBOXYLIC ACIDS
Authors: Awata Takeshi , Baizer Manuel M , Nonaka Tsutomu , Fuchigami Toshio 
Published: July 2006

Abstract
A cathodic method for the esterification of carboxylic acids under mild conditions was found. The esterification proceeded smoothly at room temperature by the reaction of alkylating reagents with quaternary ammonium carboxylates formed in a cathode chamber.
PEROVSKITE-TYPE OXIDES HAVING SEMICONDUCTIVITY AS OXYGEN SENSORS
Authors: Shimizu Yasuhiro , Fukuyama Yoshiki , Narikiyo Tomoki , Arai Hiromichi , Seiyama Tetsuro 
Published: July 2006

Abstract
Among the perovskite-type oxides examined, SrTiO3 showed a high sensitivity to oxygen in the “lean-burn” region. The resistivity characteristics of the specimen were also investigated in the exhaust gas of propane-oxygen combustion. SrSnO3 is promising for a combustion monitoring sensor.
ADSORPTION OF METHANOL ON THE SURFACES OF COPPER ALLOYS. UPS AND EELS STUDIES
Authors: Prabhakaran Kuniyil , Hegde Manjanath Subraya , Rao Chintamani Nagesa Ramachandra 
Published: July 2006

Abstract
Methanol adsorbs molecularly on the surfaces of Cu–Pd alloys at low temperatures and transforms to CH3O or CO on warming, depending upon the alloy composition. On oxygen presorbed Cu–Pd alloy surfaces, adsorption of methanol gives rise to H2O and H2CO. CH3OH adsorbed molecularly on the surfaces of Cu–Au alloys and CH3O is formed only at relatively high temperatures.
MÖSSBAUER SPECTROSCOPIC STUDY ON 1′-MONOHALOBIFERROCENES
Authors: Suto Kyoko , Katada Motomi , Motoyama Izumi , Sano Hirotoshi 
Published: July 2006

Abstract
In a series of 1′-monohalobiferrocenes, it has been found that their triiodide salts show a trapped valence state of iron atoms, although the monocations of 1′,1'″-diiodo- and dibromobiferrocene show an averaged valence state in the temperature range from 4.2 K to 298 K.
ab initio CALCULATION OF DIPHOSPHENE AND CYCLOPOLYPHOSPHANES
Authors: Yoshifuji Masaaki , Inamoto Naoki , Ito Keiji , Nagase Shigeru 
Published: July 2006

Abstract
Total energies and optimized structures were calculated by the ab initio method on the system (PH)n (n = 2–6) and characteristic properties and relative stabilization energies are discussed.
PALLADIUM-CATALYZED REGIO- AND STEREOSELECTIVE DESULFONYLATION OF ALLYLIC SULFONES WITH LiHBEt3. APPLICATION TO THE SYNTHESIS OF SQUALENE
Authors: Mohri Mitsunobu , Kinoshita Hideki , Inomata Katsuhiko , Kotake Hiroshi 
Published: July 2006

Abstract
Allylic p-tolyl sulfones were easily desulfonylated to the corresponding alkenes by LiHBEt3 in the presence of a catalytic amount of [PdCl2(dppp)] under mild conditions with the preservation of the original stereochemistry. This reaction was successfully applied to the synthesis of squalene.
CIS-TRANS PHOTOISOMERIZATION AND PHOTOOXYGENATION OF 1,2-DIARYLCYCLOPROPANES, SALT EFFECTS ON THE PHOTOINDUCED ELECTRON TRANSFER REACTIONS
Authors: Mizuno Kazuhiko , Ichinose Nobuyuki , Otsuji Yoshio 
Published: July 2006

Abstract
The efficiencies of the 9,10-dicyanoanthracene (DCA)-sensitized cis-trans photoisomerization and photooxygenation of cis- and trans-1,2-bis(4-methoxyphenyl)cyclopropanes (c-CP and t-CP) in CH3CN were remarkably enhanced by the addition of inorganic salts such as LiBF4 and Mg(ClO4)2. The mechanistic implication of the salt effects on these photoreactions was discussed.
THE DEACTIVATION/REACTIVATION OF COBALT(III) TETRAKIS(4-PYRIDYL)PORPHYRIN ELECTROCATALYST
Authors: Su Y Oliver , Kuwana Theodore 
Published: July 2006

Abstract
Cobalt tetrakis(4-pyridyl)porphyrin (abbr:CoTPyP) absorbed on a glassy carbon electrode (abb:GCE) catalyzed the reduction of oxygen to hydrogen peroxide at a rate of 1.0×106 mol−1 dm3 s−1. Although the CoTPyP exhibited deactivation, it was found that the activity could be restored by open-circuit relaxation.
AN ELECTROREDUCTIVE SYNTHESIS OF ALLYLSILANES AND BENZYLSILANES
Authors: Shono Tatsuya , Matsumura Yoshihiro , Katoh Susumu , Kise Naoki 
Published: July 2006

Abstract
The electrochemical reduction of benzyl and allyl halides carried out in the presence of chlorotrimethylsilane afforded the corresponding benzylsilanes and allylsilanes in satisfactory yields.
CATALYTIC ACTIVITIES OF COPPERS IN THE VARIOUS OXIDATION STATES FOR THE DEHYDROGENATION OF METHANOL
Authors: Takagi Katsuhiko , Morikawa Yutaka , Ikawa Tsuneo 
Published: July 2006

Abstract
The catalytic activities of coppers for the conversion of methanol are individually different by their oxidation states. Cu(II) ion and Cu(O) catalyze the dehydrogenation to form methyl formate and formaldehyde, respectively, while Cu(I) ion is inactive.
AN EFFICIENT SYNTHESIS OF (S)-CHROMANMETHANOL, A VITAMIN E PRECURSOR
Authors: Takabe Kunihiko , Okisaka Koichi , Ushiyama Yujiro , Katagiri Takao , Yoda Hidemi 
Published: July 2006

Abstract
The (S)-chromanmethanol, a key intermediate for the synthesis of optically active α-tocopherol was synthesized by a reaction sequence which utilized the asymmetric epoxidation of the (E)-allylic alcohol to the (2R,3R)-epoxyalcohol in high enantiomeric excess.
PALLADIUM-CATALYZED DOUBLE CARBONYLATION REACTIONS OF ARYL HALIDES AFFORDING α-KETO ESTERS
Authors: Ozawa Fumiyuki , Kawasaki Nobuo , Yamamoto Takakazu , Yamamoto Akio 
Published: July 2006

Abstract
Various aryl iodides can be converted into α-keto esters in reactions with carbon monoxide and alcohols in the presence of tertiary amines and catalytic amounts of tertiary phosphine-coordinated palladium complexes.
THE ENE REACTION OF TRISUBSTITUTED ALKENES WITH ELECTRON-DEFICIENT NITRILES IN THE PRESENCE OF BORON TRICHLORIDE
Authors: Hamana Hiroshi , Sugasawa Tsutomu 
Published: July 2006

Abstract
The ene reaction of trisubstituted alkenes with electron-deficient nitriles proceeds smoothly in the presence of boron trichloride to afford β,γ-unsaturated ketones in high yields. Investigation of the stereochemistry of the ene products suggests that this ene reaction is a concerted one. Similar reactions of cyclic trisubstituted alkenes are also described.
MILD AND SELECTIVE OXIDATIONS WITH POLYSTYRENE-BOUND DIARYL SELENOXIDE
Authors: Hu Nan Xing , Aso Yoshio , Otsubo Tetsuo , Ogura Fumio 
Published: July 2006

Abstract
Polystyrene-bound diaryl selenoxide is shown to behave as a mild oxidizing agent for thiol to disulfide, sulfide to sulfoxide, phosphine to phosphine oxide, and hydroguinone to benzoguinone. In addition, it effects solvent-dependent reactions of thioamide to nitrile in usual solvent and to thiadiazole in acetic acid.
THE STRUCTURE OF A CELLULOSE SHEET IN THE NASCENT FIBRIL PRODUCED BY ACETOBACTER XYLINUM
Authors: Kai Akira , Koseki Tomoki 
Published: July 2006

Abstract
It became clear that the nascent fibril produced by Acetobacter xylinum crystallizes into cellulose II, when treated with alkali of a very low concentration ranging from 1×10−3 to 1.0×10−2 wt%. This fact shows that the bonding strength of inter-molecules of a cellulose sheet, as well as the bonding strength between the cellulose sheets in the nascent fibril, is very weak.
SYNTHESIS OF (+)-(3S,6S,10S,13S,17S,20S,24S,27S)-1,8,15,22-TETRAAZA-3 ,6;10,13;17,20;24,27-TETRAEPOXYCYCLOOCTACOSANE. AN ENANTIOMERICALLY PURE TETRAAZACROWN ETHER WITH D4 SYMMETRY AND OF KNOWN ABSOLUTE CONFIGURATION
Authors: Naemura Koichiro , Hokura Yukio , Kanda Yuji , Nakazaki Masao 
Published: July 2006

Abstract
The title azacrown ether, which was synthesized using (+)-(2S,5S)-trans-2,5-bis(aminomethyl)tetrahydrofuran and (+)-(2S,5S)-trans-2,5-bis(hydroxymethyl)tetrahydrofuran as the C2 building blocks, is the first optically active organic molecule of D4 Symmetry with known absolute configuration.
ORBITAL COMPLEMENTARY AND COUNTERCOMPLEMENTARY EFFECTS IN SUPEREXCHANGE INTERACTION THROUGH HETEROBRIDGES IN BINUCLEAR COPPER(II) COMPLEXES
Authors: Nishida Yuzo , Takeuchi Masataka , Takahashi Kazuhiro , Kida Sigeo 
Published: July 2006

Abstract
Low antiferromagnetism of μ-alkoxo-μ-carboxylatodicopper(II) complexes were reasonably explained in terms of the orbital countercomplementary effect based on Hoffmann’s theory for superexchange interaction.
FORMATION OF QUATERNARY CARBON CENTERS FROM TERTIARY NITRO COMPOUNDS BY FREE RADICAL METHODS
Authors: Ono Noboru , Miyake Hideyoshi , Kaji Aritsune 
Published: July 2006

Abstract
The radical intermediates generated by denitration of tertiary nitro compounds with tributyltin hydride undergo the carbon–carbon bond forming reaction with double bonds, which provides a useful method for the construction of quaternary carbon centers.
DICYANOANTHRACENE-SENSITIZED PHOTOOXYGENATION OF THUJOPSENE
Authors: Hatsui Toshihide , Suzuki Nobumasa , Takeshita Hitoshi 
Published: July 2006

Abstract
9,10-Dicyanoanthracene-sensitized photooxygenation of thujopsene proceeded by singlet oxygen, but the reaction with added biphenyl caused an electron transfer and produced a novel product which has no longer possessed the cyclopropane ring. The ring cleavage is best explained in terms of intermediary formation of a radical cation.
A SYNTHETIC APPROACH TO (+)-THIENAMYCIN FROM METHYL (R)-3-HYDROXYBUTANOATE. A NEW ENTRY TO (3R, 4R)-3-[(R)-1-HYDROXYETHYL]-4-ACETOXY-2-AZETIDINONE
Authors: Chiba Toshiyuki , Nakai Takeshi 
Published: July 2006

Abstract
A new entry to the O-silylated form of the title azetidinone, a well-established key intermediate for thienamycin synthesis, is described which relies on the stereocontrolled transformation of the 2-azetidinone obtained via the condensation of methyl (R)-3-hydroxybutanoate with the N-silylimine of trimethylsilylpropynal.
NOUVELLE SYNTHESE DE FURANNES
Authors: Duhamel Lucette , Chauvin et Joë 
Published: July 2006

Abstract
The cyclization of α-thiosubstituted 1,4-diketones affords a convenient synthesis of a variety of 3-thiosubstituted furans with quantitative yields, and very mild experimental conditions (CH2Cl2, 15 °C, Cat.: ISiMe3 or BrSiMe3 or ClSiMe3–ZnBr2). These methods were also applied to simple 1,4-diketones.
HIGH CHEMOSELECTIVE SYNTHESIS OF CARBOXAMIDES BY USING SYN-PHENYLPYRIDYL-O-ACYL OXIMES(PPKO)
Authors: Miyasaka Tadayo , Noguchi Shunsaku 
Published: July 2006

Abstract
Various carboxamides are prepared chemoselectively in good yields by using syn-phenylpyridyl ketoxime(PPKO) as functional leaving group.
CLUSTER IONS OF WATER OBSERVED BY LIQUID IONIZATION MASS SPECTROMETRY
Authors: Tsuchiya Masahiko , Otsuka Kiichiro , Kuwabara Hirofumi 
Published: July 2006

Abstract
Cluster ion distributions were measured and stable ions were observed at m/z 379 (21 molecules), 505, 73, and 181. Significant effects of a high electric field and temperature of a needle on the ion abundances strongly suggest that water vapor in argon under the atmospheric pressure condenses on the needle and ionization occurs at the liquid surface where cluster molecules of water exist.
ZINC-PHOTOSENSITIZED CIS–TRANS ISOMERIZATION OF 2-BUTENES
Authors: Yamamoto Shunzo , Nobusada Naoki , Sueishi Yoshimi , Nishimura Norio 
Published: July 2006

Abstract
The zinc-photosensitized isomerization of cis- and trans-2-butenes has been studied. The photostationary cis/trans ratio was found to be about 1/1.5 and to be independent of the 2-butene pressure.
THE INFLUENCE OF INTERLAYER WATER ON CLAY CATALYSTS. INTERLAMELLAR CONVERSIONS OF 2-METHYLPROPENE
Authors: Ballantine James A , Jones William , Purnell J Howard , Tennakoon Dayananda T B , Thomas John M 
Published: July 2006

Abstract
Evidence is provided for two alternative pathways for the reactions undergone by 2-methylpropene between the layers of a sheet silicate catalyst (Al3+-exchanged montmorillonite). This clay, when it initially contains ca. 12% interlayer water, catalyses the addition of either water or methanol to 2-methylpropene to yield, respectively, t-butanol or 2-methoxy-2-methyl propane (methyl tertiary butyl ether, MTBE), whereas the same clay following deliberate dehydration acts as an effective catalyst for the oligomerisation of 2-methylpropene, Similar results are obtained with an Al3+-exchanged synthetic hectorite.
ADSORPTION OP PHENOL, CRESOLS, AND BENZYL ALCOHOL FROM AQUEOUS SOLUTION BY SILICALITE
Authors: Narita Eiichi , Horiguchi Naoto , Okabe Taijiro 
Published: July 2006

Abstract
Silicalite, an aluminium-free analogue of zeolite ZSM-5, selectively adsorbs phenol, cresols,and benzyl alcohol from aqueous solution and its adsorption capacity is superior to that of ZSM-5. The amount of these organic molecules adsorbed is benzyl alcohol ≅ p- &gt; m- &gt; o-cresol &gt;&gt; phenol in the order.
THE ANTI-SELECTIVE MICHAEL ADDITION OF TIN(II) ENOLATES OF CYCLIC KETONES TO β-NITROSTYRENE
Authors: Stevens Rodney W , Mukaiyama Teruaki 
Published: July 2006

Abstract
The tin(II) enolates of cyclic ketones were found to react with β-nitrostyrene to afford the corresponding 4-nitroketones with unprecedented anti-selectivity. In the case of the reaction of the tin(II) enolate of cyclohexanone with β-nitrostyrene, the anti-adduct was yielded in &gt;93:7 diastereomeric excess.
SYNTHESIS OF 4H-BENZO[hi]PYRROLO[2,1,5-cd]INDOLIZIN-4-ONE. A NOVEL TYPE OF PHENALENONE ANALOG
Authors: Noguchi Michihiko , Tanigawa Noriyuki , Tamamoto Takashi , Kajigaeshi Shoji 
Published: July 2006

Abstract
4H-Benzo[hi]pyrrolo[2,1,5-cd]indolizin-4-one, an analog of phenalenone, is obtained By a one-pot oxidation of 5,6-dihydro-4H-benzo[hi]pyrrolo[2,1,5-cd]indolizine with DDQ in aqueous dioxane. Its characteristic electronic feature is also described, which is different inherently from that of phenalenone or 3H-benz[cd]azulen-3-one.
PHOTOCHEMICAL REACTIONS OF α-METHYLSTYRENE INDUCED By Eu(III)/Eu(II) PHOTOREDOX SYSTEM IN METHANOL
Authors: Ishida Akito , Toki Susumu , Takamuku Setsuo 
Published: July 2006

Abstract
Photoirradiation of a methanol solution of α-methylstyrene and EUCl3·6H2O with Pyrex filter resulted in the formation of 2,3-dimethyl-2,3-diphenylbutane and 3,4-dimethyl-3,4-diphenylpentanol in high yields. This reaction was initiated By the excitation of Eu(III)–CH3OH CT-bands and followed By a successive photochemical reaction of Eu(II) ions formed.
STEREO- AND REGIOSELECTIVE SYNTHESIS OF HYDROXYCALAMENENES VIA (ARENE)TRICARBONYL CHROMIUM COMPLEXES
Authors: Uemura Motokazu , Isobe Kazuo , Hayashi Yuji 
Published: July 2006

Abstract
Stereoisomers of 7- and 8-hydroxycalamenenes were synthesized stereo- and regioselectively via (arene)tricarbony1 chromium complexes.
AN 18O-TRACER STUDY ON THE TiO2-SENSITIZED PHOTOOXIDATION OF AROMATIC COMPOUNDS
Authors: Takagi Katsuhiko , Fujioka Toshio , Sawaki Yasuhiko , Iwamura Hiizu 
Published: July 2006

Abstract
TiO2-sensitized photooxidation of benzenes has been studied to disclose the origin of the ring hydroxylating species. An 18O-tracer study using 18O2 gas revealed that the hydroxyl group of phenols comes essentially from molecular oxygen at higher pH region. At lower pH, however, the oxygen atom in phenols originates mostly from solvent water. These findings are compatible with two different mechanisms proposed By Osa et al. and Tokumaru et al.; that is, the major pathway changes with pH.
FORMATION OF ALLENYL CATIONS By PHOTOLYSIS OF TRIARYLCHLOROALLENES
Authors: Kitamura Tsugio , Miyake Sumiya , Kobayashi Shinjiro , Taniguchi Hiroshi 
Published: July 2006

Abstract
Irradiation of triarylchloroallenes in methanol afforded 1,3,3-triaryl-3-methoxypropynes, suggesting the intervention of triarylallenyl cations. Irradiation of triphenylchloroallene in ethanol and 2-propanol gave the similar results but the irradiation in t-butyl alcohol gave only the products from triphenylallenyl radical.
X-RAY CRYSTAL STRUCTURES AND CONFORMATIONS OF 6β,12β-DIHYDROXY-3E,7E-D0LABELLADIENE 6-p-BROMOBENZOATE AND ACETOXYODONTOSCHISMENOL 3S,4S-EPOXIDE
Authors: Matsuo Akihiko , Yoshida Ken-ichiro , Uohama Katsumi , Hayashi Shûichi , Connolly Joseph D , Sim George A 
Published: July 2006

Abstract
The structures and conformations of 6β,12β-dihydroxy-3E,7E-dolabelladiene 6-p-bromobenzoate and acetoxyodontoschismenol 3S,4S-epoxide have been established By X-ray crystallographic analysis. The original assignment of the stereochemistry at C-12 of (+)-acetoxyodontoschismenol has been revised.
HEAT CAPACITIES FOR BINARY MIXTURES OF (ALCOHOL + NON-POLAR LIQUID) AT 298.15 K
Authors: Tanaka Reiji , Toyama Satoru , Murakami Sachio 
Published: July 2006

Abstract
The heat capacities for the binary mixtures of (n-CnH2n+1OH + n-C7H16) for n=1–6, and (n-C4H9OH + C6H6) have been determined at 298.15 K. A sharp and high peak appears in the partial molar heat capacities of alcohol, Cp,1, in the heptane solution at a high dilution of alcohol. The values Cp,1∞, at the infinite dilution and Cp,1* at the pure state change linearly with n of alcohol. The results are related to the self-association of alcohol in the mixture.
INFRARED STUDY OF INTERMEDIATES IN PROPYNE OXIDATION ON ZnO USING [18O2]OXYGEN AND DINITROGEN OXIDE
Authors: Nakajima Takashi , Miyata Hisashi , Kubokawa Yutaka 
Published: July 2006

Abstract
The oxidation of propyne on ZnO by 18O2 and N2O has been studied by IR spectroscopy. The lattice oxygen participates in the formation of diketone-like species and that adsorbed oxygen forms ketene-like species. No formate species is formed in the oxidation by N2O.
POLYMERIZED LIPOSOME AS THE CARRIER OF HEME. A PHYSICALLY STABLE OXYGEN CARRIER UNDER PHYSIOLOGICAL CONDITIONS
Authors: Tsuchida Eishun , Hasegawa Etsuo , Matsushita Yoh-ichi , Eshima Kiyoshi , Yuasa Makoto , Nishide Hiroyuki 
Published: July 2006

Abstract
By incorporating the lipid-heme in the polymerized liposome, conc. and mechanically stable heme solution ([heme] = 10 mM) was prepared; this solution (100 ml) could bind molecular oxygen (ca. 23 ml) reversibly under physiological conditions even in a high speed flowing system.
USE OF 3,4-DIMETHOXYBENZYL GROUP AS A PROTECTING GROUP FOR THE 2′-HYDROXYL GROUP IN THE SYNTHESIS OF OLIGORIBONUCLEOTIDES
Authors: Takaku Hiroshi , Ito Tsunehiko , Imai Kazuaki 
Published: July 2006

Abstract
The 3,4-dimethoxybenzyl group was introduced to the 2′-hydroxyl group by the reaction of nucleosides with 3,4-dimethoxybenzyl trichloroacetimidate or 3,4-dimethoxybenzyl bromide-NaH. Further, this group can be used as a protecting group for the O6-amide group of the guanine residue. The protected nucleosides are useful starting materials for the synthesis of oligoribonucleotides. The 3,4-dimethoxybenzyl group was removed rapidly from the oligoribonucleotides by treatment with oxidizing agents without any damage to the glycosidic bonds.
SYNTHESIS OF AZULENO[1,2-b]PYRROLE AND AZULENO[1,2-b]FURAN
Authors: Fujimori Kunihide , Fukazawa Hiroyuki , Nezu Yasuhiko , Yamane Kameji , Yasunami Masafumi , Takase Kahei 
Published: July 2006

Abstract
New heterocyclic compounds, methyl 1,2-dihydroazuleno[1,2-b]pyrrole-9-carboxylate, its [1,2-c] isomer, and the furan analogues are synthesized by the reaction of 3-methoxycarbonyl-2H-cyclohepta[b]furan-2-one with morpholino enamines of N-ethoxycarbonyl-3-oxopyrrolidine or 3-oxotetrahydrofuran. By the dehydrogenation of the resulting [1,2-b] isomers followed by demethoxycarbonylation, azuleno-[1,2-b]pyrrole and azuleno[1,2-b]furan are obtained, respectively.
THE RING STRAIN ENERGIES OF CYCLOPOLYSILANES, [R1R2Si]n (n=3–6)
Authors: Watanabe Hamao , Shimoyama Hiromi , Muraoka Tsutomu , Okawa Tadashi , Kato Motohiko , Nagai Yoichiro 
Published: July 2006

Abstract
Approximate estimation for the ring-strain energies of peralkylcyclopolysilanes, [R1R2 Si]n where n = 6, 5, 4, and 3, gave ΔΔE = 0, 6, 23, and 41 kcal·mol−1, respectively.
Cobaltocene Electrode Films Prepared by Electropolymerization of [Co(C5H4CCl=CHCHO)2]PF6
Authors: Nishihara Hiroshi , Aramaki Kunitsugu 
Published: July 2006

Abstract
A new cobalticinium salt [Co(C5H4CCl=CHCHO)2]PF6 gives electroactive films on electrode surfaces by electroreduction in n-Bu4NI–MeCN and the formed films act as a one-way charge-carrier for the redox reactions of solution species.
Preparation of Optically Active (4aα,8aβ)-Octahydro-4a-methyl-8-methylene-2(1H)-naphthalenone, a Key Intermediate for the Enantioselective Synthesis of Eudesmane Sesquiterpenes
Authors: Utaka Masanori , Fujii Yasuyuki , Takeda Akira 
Published: July 2006

Abstract
The titled optically active methylene ketone was prepared in 45% ee from 3-methyl-1,2-cyclohexanedione by use of a novel asymmetric Michael addition with (R,R)-(−)-2,3-butanediol as chiral auxiliary.
Crystal and Electronic Structures of δ-(BEDT-TTF)2AuI2
Authors: Kobayashi Akiko , Kato Reizo , Kobayashi Hayao , Tokumoto Madoka , Anzai Hiroyuki , Ishiguro Takehiko 
Published: July 2006

Abstract
The semiconducting salt of δ-(BEDT-TTF)2AuI2 crystallizes in the orthorhombic system with the lattice constants of a=6.802(2), b=14.822(8), c=33.387(9) Å. The BEDT-TTF molecules form a two-dimensional network parallel to (001). The origin of the semiconducting properties was discussed.
Isolation and Structures of Citreovirenone and Citreovirone
Authors: Shizuri Yoshikazu , Nagahama Masaharu , Yamamura Shosuke , Kawai Kazuaki , Kawai Noriaki , Furukawa Hideyuki 
Published: July 2006

Abstract
Two new metabolites (citreovirenone and citreovirone) have been isolated from the mycelium of Penicillium citreo-viride B. (IFO 4692) and their structures have also been elucidated on the basis of their spectral data coupled with some chemical evidence.
INCLUSION PROPERTIES OF N,N,N′,N′-TETRACYCLOHEXYLFUMARAMIDE AND CRYSTAL STRUCTURE OF ITS 1:1 MOLECULAR COMPLEX WITH ETHANOL
Authors: Toda Fumio , Tagami Yasunori , Mak Thomas C W 
Published: July 2006

Abstract
The title host compound forms crystalline inclusion complexes with a wide variety of alcohols- X-Ray analysis of its 1:1 ethanol complex showed that the crystal comprises a packing of a hydrogen-bonded guest···host···guest aggregate and a discrete host molecule, each of which occupy a different crystallographic center of symmetry.
Oxidative Esterification of Ethanol over Oxide Catalysts
Authors: Wang Lianchi , Eguchi Koichi , Arai Hiromichi , Seiyama Tetsuro 
Published: July 2006

Abstract
Oxidative esterification of ethanol has been studied over various oxide catalysts. Acetaldehyde was easily formed by oxidative dehydrogenation, and reacted further with remained ethanol and oxygen to produce ester. Among single oxides, Bi2O3, MoO3, and Sb2O4 showed the highest selectivity and yield for ethyl acetate formation, respectively. The ethyl acetate yield was highest and complete oxidation was extremely low over MoO3–Sb2O4 system.
Palladium-Catalyzed Regio- and Stereoselective Reduction of Allylic Compounds with LiHBEt3. Application to the Synthesis of Co-enzyme Q10
Authors: Mohri Mitsunobu , Kinoshita Hideki , Inomata Katsuhiko , Kotake Hiroshi , Takagaki Hidetsugu , Yamazaki Keiji 
Published: July 2006

Abstract
Regio- and stereoselective desulfonylation of allylic sulfones with LiHBEt3 in the presence of a catalytic amount of [PdCl2(dppp)] was successfully applied to the synthesis of co-enzyme Q10. It was found that this reduction system was applicable to a wide variety of allylic functional groups.
Magnetic Anisotropy of a Cast Multibilayer Film Containing a Cu(II)/Bilayer Complex
Authors: Ishikawa Yuichi , Tsukamoto Masashi , Kunitake Toyoki 
Published: July 2006

Abstract
A cast film was prepared from an aqueous mixture of azobenzene-containing, single-chain amphiphiles with the ammonium and Cu(II)-cyclam (1,4,8,11-tetraazacyclotetradecane) head groups. Esr spectra showed the magnetic anisotropy of the film due to the regular orientation of the component amphiphiles.