bluuebunny/crossref_metadata_2025_split huggingface dataset:
Oxidation of trans-Decahydronaphthalene in Acetic Anhydride
Authors: Yazu Kazumasa , Wakabayashi Takeshige , Nakayama Tetsuo 
Published: July 2006

Abstract
The oxidation of trans-decahydronaphthalene (1) was carried out in acetic anhydride with oxygen in the presence of Co(OAc)2, Ce(OAc)3, and NH4Br. Decahydronaphthyl acetates were obtained as main oxidation products in a selectivity of 81 mol% at 120 °C. In addition, relative reactivities of hydrogen atoms of 1 were determined at temperatures from 90 to 120 °C.
Selective Epoxidation of Chiral 2-Methyl-3,4-unsaturated Aldehyde Acetals
Authors: Honda Yutaka , Ori Aiichiro , Tsuchihashi Gen-ichi 
Published: July 2006

Abstract
Title compounds were treated with EtAlCl2 or TiC3OPri and t-butyl hydroperoxide (TBHP) at −78 °C, followed by K2CO3 to give anti-epoxide, which reacted with LiAlH4 at γ-position.
The Reaction of Crystalline Aluminum Hydroxide in Ethylene Glycol
Authors: Inoue Masashi , Kondo Yasuhiko , Inui Tomoyuki 
Published: July 2006

Abstract
Thermal treatment of crystalline aluminum hydroxide in ethylene glycol yields a compound having a boehmite structure with ethylene glycol incorporated between the boehmite layers. The grain size of the starting material was the predominant factor governing the formation of the product. The product had a unique honeycomb-like texture.
EFFECT OF A-STRAIN. DIASTEREOSELECTIVE SYNTHESIS OF 3,2′-METHYLENE BRIDGED CIS-4a-ARYLDECAHYDROISOQUINOLINE RING SYSTEM VIA N-ACYLIMINIUM ION-POLYENE RING CLOSURE
Authors: Kano Shinzo , Yokomatsu Tsutomu , Nemoto Hajime , Shibuya Shiroshi 
Published: July 2006

Abstract
Diastereoselective synthesis of 3,2′-methylene bridged 6-oxygenated 4a,6-cis-4a, 8a-cis-4a-aryldecahydroisoquinoline ring system was achieved by an application of N-acyliminium ion-polyene cyclization at the initial stage.
Electron Transfer vs. Excited-State Reactions in the Photochemical Reaction of the 2-Vinylnaphthalene-Fumaronitrile System
Authors: Yamaguchi Kentaro , Oh Shin-Chol , Shirota Yasuhiko 
Published: July 2006

Abstract
Photochemical reaction of the 2-vinylnaphthalene (VN)-fumaronitrile (FN) system by direct irradiation, which proceeds probably via ion radicals generated by electron transfer in the excited singlet state of VN to yield a VN-FN copolymer and VN cyclodimers, contrasts with the benzophenone-sensitized reaction, which proceeds via the triplet states of VN and FN with no dominant contribution of electron transfer leading to the formation of VN-FN cycloadducts as main products.
Syntheses of Picroroccelin Diastereomers and Their Regioisomers
Authors: Shin Chung-gi , Nakano Toshitaka , Sato Yoshiaki , Kato Haruo 
Published: July 2006

Abstract
Picroroccelin, 3,6-dibenzyl-3-hydroxy-6-methoxy-1-methyl-2,5-piperazinedione, and its regioisomer were synthesized as the diastereomeric mixtures from glycine anhydride via 3,6-dibenzylidene-1-methyl-2,5-piperazinedione by eight steps.
Capacitance Relaxation Method for Detecting Surface States and Bulk Traps at Semiconductor-liquid Junctions
Authors: Kobayashi Kenkichiro , Takata Masasuke , Okamoto Shoichi , Sukigara Mitsunori 
Published: July 2006

Abstract
To detect surface (or bulk trapping) states with small state density at a semiconductor-liquid junction, we have developed a capacitance relaxation method. This method is applied to studies of the electronic structure at the TiO2/H2O interface.
Light-induced Changes in the Infrared Spectra of Reaction Centers from Rhodopseudomonas sphaeroides in H2O and D2O Solutions
Authors: Hayashi Hidenori , Go Masahiro , Tasumi Mitsuo 
Published: July 2006

Abstract
Light-induced changes were observed in the infrared spectra of the reaction centers from Rhodopseudomonas sphaeroides in aqueous solutions. These changes were suppressed in the presence of ferricyanide, demonstrating that the light-induced changes were due to the primary photochemical reactions in photosynthesis.
A Simple Route to 2,4-Bisiminothietanes
Authors: Bestmann Hans Jürgen , Siegel Bernd , Schmid Günter 
Published: July 2006

Abstract
N-Substituted keteniminylidenetriphenylphosphoranes react with isothiocyanates in a [2+2] cycloaddition to form the four-membered ring phosphonium ylides. These yield the previously unknown arylidene-2,4-bisiminothietanes with aromatic aldehydes.
Stereoselective Synthesis of (2E,4E)- and (2Z,4E)-2,4-Alkadienoates by the Ester Enolate Claisen Rearrangement of (E)-1-Alkyl-3-trimethylsilyl-2-propenyl Glycolates Followed by the Peterson Reaction
Authors: Sato Toshio , Tsunekawa Hiroshi , Kohama Hiromasa , Fujisawa Tamotsu 
Published: July 2006

Abstract
The ester enolate Claisen rearrangement of (E)-1-alkyl-3-trimethylsilyl-2-propenyl glycolates gave (E)-erythro-2-hydroxy-3-trimethylsilyl-4-alkenoates with high diastereoselectivity, which were stereoselectively converted into (2E,4E)- and (2Z,4E)-2,4-alkadienoates by the Peterson reaction.
A PRACTICAL SYNTHESIS OF MYRCENOL BY PALLADIUM COMPLEX-CATALYZED ELIMINATION REACTION
Authors: Kumobayashi Hidenori , Mitsuhashi Shigeru , Akutagawa Susumu , Ohtsuka Sei 
Published: July 2006

Abstract
A Palladium complex-catalyzed elimination reaction of allyl amines was studied to establish a practical process for production of myrcenol. The catalytic elimination occurred smoothly with the cationic Pd(II) complexes. Among a variety phosphorous ligands, the tetramethylene and the pentamethylene diphosphine ligands proved to be the best ligand with respects to the catalytic activity and selectivity.
Crystal Structure and Electrical Properties of an Organic Conductor δ-(BEDT-TTF)2AuBr2
Authors: Mori Takehiko , Sakai Fumiko , Saito Gunzi , Inokuchi Hiroo 
Published: July 2006

Abstract
The crystal structure of a novel organic conductor δ-(BEDT-TTF) 2AuBr2 (BEDT-TTF: bis(ethylenedithio)tetrathiafulvalene) is determined by X-ray analysis. This salt is essentially isostructural with δ-(BEDT-TTF)2AuI2 and one-dimensional along the adjacent stacks. Along this direction a two-fold superlattice is present at room temperature. The resistivity and the thermoelectric power exhibit anomalies above 320 K.
SYNTHESIS OF OPTICALLY ACTIVE SELENOXIDE
Authors: Shimizu Toshio , Kobayashi Michio 
Published: July 2006

Abstract
Fractional recrystallization of diastereomeric 2,4,6-triisopropylpheny1 4′-(l-menthyloxycarbonyl)phenyl selenoxide gave optically pure (−)-selenoxide. Transesterification of this diastereomerically pure (−)-selenoxide with methanol gave enantiomeric (−)-2,4,6-triisopropylphenyl 4-′-(methoxycarbonyl)phenyl selenoxide in 88.1% optical purity.
The Oxidative Michael Reaction. A Highly Diastereoselective Synthesis of 5-Oxocarboxylic Acid Derivatives
Authors: Hashimoto Yukihiko , Mukaiyama Teruaki 
Published: July 2006

Abstract
Methyldiphenylsilyl enol ethers react with an allylic cation stabilized by two sulfur atoms in a highly anti-selective manner to afford 5-oxocarboxylic acid derivatives.
Cyclodimerizations of Alkyl Styryl Ketones and Their Silyl Enol Ethers by Use of Iron Carbonyls
Authors: Ueda Tatsuo , Otsuji Yoshio 
Published: July 2006

Abstract
The reaction of alkyl styryl ketones with Fe3(CO)12 gives 3-acyl-4,5-diphenylcyclohexanones in a manner of [2+4] cyclodimerization. (η4-Enone)Fe(CO)3 complexes serve as catalyst for this reaction. Silyl enol ethers of the same ketones afford 4-acyl-3,5-diphenylcyclohexanones in the different type of [2+4] cyclodimerization upon treatment with Fe3(CO)12.
The Reaction of Diazonium Ion Generated from α-Azohydroperoxide with Phenols. The Isolation and Reaction of Diazoether Intermediate
Authors: Tezuka Takahiro , Ando Setsuo , Wada Toshinori 
Published: July 2006

Abstract
The reaction of benzenediazonium ion generated from α-azohydroperoxide with 1-naphthol gave a diazoether which rearranged to 2- and 4-phenylazo-1-naphthols.
Lithiated Dimethylketene Diisopropyl Dithioacetal as a Synthon of Homoenolate Dianion of Isobutyric Ester. An Application to the Synthesis of α-Methylenelactones
Authors: Fujisawa Tamotsu , Umezu Kazuto , Suzuki Masahiro , Sato Toshio 
Published: July 2006

Abstract
Lithium anion of dimethylketene diisopropyl dithioacetal reacted with various kinds of electrophiles to afford γ-substituted products with high regioselectivity. The utility of the lithiated ketene dithioacetal, a novel homoenolate dianion equivalent of isobutyric ester, was demonstrated in the synthesis of α-methylenelactones.
Dependence of Film Thickness on Electrochemical Kinetics of Polypyrrole and on Lithium/Polypyrrole Battery
Authors: Osaka Tetsuya , Naoi Katsuhiko , Ogano Satoshi , Nakamura Sadako 
Published: July 2006

Abstract
The charging-discharging behavior of lithium/LiClO4/polypyrrole battery was found to show a different dependence on film thickness of polypyrrole cathode prepared at various film formation potentials. In order to rationalize these battery properties, cyclic voltammetry was employed for the polypyrrole films prepared at different potentials as a function of film thickness.
An Infrared Study of NO Adsorbed on SiO2-Supported Fe, Co, and Ni Bimetallic Alloy Catalysts for CO Hydrogenation
Authors: Ishihara Tatsumi , Eguchi Koichi , Arai Hiromichi 
Published: July 2006

Abstract
The electronic state of bimetallic system of Fe, Co, and Ni was investigated by infrared spectra of the bent- and linear-types adsorbed nitrogen monoxide. The conversion of CO was related with the absorbance of bent-type NO. The alloying of metals increased the absorbance of bent-type in accord with high CO conversion and high selectivity to higher hydrocarbons.
Preparation of Electrical-Conducting CdS-Polymer Composites Using Organosols of CdS. Dependence of Electrical Conductivity on Kind of Polymer
Authors: Yamamoto Takakazu , Kubota Etsuo , Taniguchi Atsushi 
Published: July 2006

Abstract
Cadmium sulfide-polymer (poly(acrylonitrile), poly(vinylidene fluoride), etc.) composites containing cadmium sulfide in 16–73 wt-% are prepared by using organosols of cadmium sulfide. The composites are n-type semiconductors and show electrical conductivity ranging 10−9–10−2.5 S cm−1.
Photoallylation of Quinones with Allylstannane
Authors: Maruyama Kazuhiro , Imahori Hiroshi , Osuka Atsuhiro , Takuwa Akio , Tagawa Hiroyuki 
Published: July 2006

Abstract
Photochemical reactions of halogeno-quinones with allylstannane in a benzene or an acetonitrile solution afforded allylated quinones and allyl quinols as major products. Nuclear spin polarization effects observed during irradiation support a contribution of electron transfer process.
Generation of Lithium Enolates Accelerated by Lithium Trifluoromethanesulfonate. Application to the Selective 1,4-Chiral Induction in the Aldol Reaction of t-Butyl δ-Hydroxy Carboxylates
Authors: Narasaka Koichi , Ukaji Yutaka , Watanabe Kazutoshi 
Published: July 2006

Abstract
The presence of lithium trifluoromethanesulfonate accelerates the enolate formation from t-butyl δ-hydroxy carboxylates with lithium diethylamide. The reaction of the resulting enolates with ketones or benzaldehyde affords the corresponding α,δ-syn aldol adducts stereoselectively.
DIMINUTION OF AROMATICITY IN HOMOTROPYLIUM IONS BY DONOR SUBSTITUENTS AND THE SITE-DEPENDENCE THEREOF
Authors: Scott Lawrence T , Oda Mitsunori , Hashemi Mohammed M 
Published: July 2006

Abstract
The aromaticity of homotropylium ions is shown to diminish in the order: parent &gt; 4-OH &gt; 2-OH &gt; 1-OH &gt; 3-OH. Diatropicity and thermodynamic stability both appear to follow this same order.
Stereoselective Synthesis of (E)-5-Hydroxy-4-methyl-2-alkenoates by Palladium-Catalyzed Stereospecific Hydrogenolysis of (E)-4,5-Epoxy-4-methyl-2-alkenoates with Ammonium Formate
Authors: Shimizu Isao , Oshima Masato , Nisar Mohammad , Tsuji Jiro 
Published: July 2006

Abstract
Palladium-catalyzed hydrogenolysis of (E)-4,5-epoxy-4-methyl-2-alkenoates with HCO2H-Et3N gave (E)-5-hydroxy-4-methyl-2-alkenoates in good yields with inversion of stereochemistry.
New Marine Furanosesquiterpenoids, Tubipofuran and 15-Acetoxytubipofuran from the Stolonifer Tubipora musica Linnaeus
Authors: Iguchi Kazuo , Mori Kenichiro , Suzuki Makoto , Takahashi Hiroshi , Yamada Yasuji 
Published: July 2006

Abstract
New bioactive furanosesquiterpenoids, tubipofuran and 15-acetoxy-tubipofuran, were isolated from the Japanese stolonifer Tubipora musica Linnaeus. Their structures were determined on the basis of spectral data and chemical reactions.
Evidence for a Single-Electron-Transfer Activation in the Cleavage of Cobalt–Carbon Bonds of Alkylcobalt(III) Complexes with Iodine
Authors: Fukuzumi Shunichi , Ishikawa Kunio , Tanaka Toshio 
Published: July 2006

Abstract
Evidence for a single-electron-transfer (SET) activation in the cleavage of cobalt–carbon bonds of alkylcobalt(III) complexes with iodine is shown by the identification of products that could arise only via an SET pathway as well as by the kinetic comparison between the cleavage reaction of alkylcobalt(III) complexes with iodine and the electron-transfer reaction of ferrocene derivatives with iodine in acetonitrile.
Selective Synthesis of 1,3-Dienic Terpenes in a β-Form through Regioselective 1,4-Elimination of Allylic Ethers
Authors: Otera Junzo , Niibo Yoshihisa , Okuda Kazuhiro 
Published: July 2006

Abstract
γ-Methyl-substituted allylic ethers proved to be converted into β-substituted dienes exclusively on treatment with t-BuOK in refluxing THF or cyclohexane.
Synthesis of Zeolite ZSM-5 from Acid Clay and Cristobalite Rock
Authors: Narita Eiichi , Akito Ken-ichi 
Published: July 2006

Abstract
Zeolite ZSM-5 was easily synthesized by using acid-treated rocks such as acid clay and cristobalite rock in place of some synthetic chemicals. Although the crystal growth of existing α-quartz was also observed with the crystallization of ZSM-5, it can be inhibited by decreasing the alkalinity of a reaction mixture.
Laser Induced CIDNP Study of Photochemical Electron Transfer Reaction between Covalently Linked Porphyrin–Tryptophan Compounds and 1,4-Benzoquinone
Authors: Osuka Atsuhiro , Maruyama Kazuhiro 
Published: July 2006

Abstract
Argon ion laser excitation of covalently linked porphyrin–tryptophan compound in the presence of 1,4-benzoquinone in benzene-d6 resulted in strong 1H-NMR polarizations of tryptophan moiety. These CIDNP effects are reasonably explained by the mechanism involving the secondary electron transfer from tryptophan moiety to porphyrin cation radical as the key step.
Photochemical Conversion from Flexible Host to Rigid Host of a Doubly Capped γ-Cyclodextrin
Authors: Moriwaki Fumio , Ueno Akihiko , Osa Tetsuo , Hamada Fumio , Murai Koichi 
Published: July 2006

Abstract
γ-Cyclodextrin bearing two anthracene moieties (1) exhibited an exciton coupling band of R-helicity as well as excimer emission. Photoirradiation caused dimerization of the appended moieties, converting 1 from flexible host to rigid host.
STEREOSELECTIVE ALDOL REACTION FOR THE PREPARATION OF β-ETHYLTHIOMETHYL ALDOLS VIA TIN(II) ENOLATE BY THE USE OF A CATALYTIC AMOUNT OF THE TIN(II) SPECIES
Authors: Yura Takeshi , Iwasawa Nobuharu , Mukaiyama Teruaki 
Published: July 2006

Abstract
An aldol type reaction of divalent tin enolates with aldehydes is successfully achieved by the use of only a catalytic amount of the tin(II) species to afford the cross aldol products in good yields with high stereoselectivity.
Crystal Structure and Reflectance Spectrum of β″-(BEDT-TTF)2IAuBr
Authors: Ugawa Akito , Yakushi Kyuya , Kuroda Haruo , Kawamoto Atsushi , Tanaka Jiro 
Published: July 2006

Abstract
(BEDT-TTF)2IAuBr was synthesized and the crystal structure of this material was determined to be of the β″- type, being isomorphous to β″-(BEDT-TTF)2AuBr2. The polarized reflectance spectrum indicates that the electronic structure of this salt is of considerable two-dimensional character.
The Phospha-Cope Rearrangement of 4λ-Phospha-1-hexen-5-yne Derivatives
Authors: Kawashima Takayuki , Miki Yasuaki , Inamoto Naoki 
Published: July 2006

Abstract
The title compounds (1) were refluxed in hexanol to give the corresponding 1,4-pentadienylphosphinates, which seem to be formed via transient “phospha-allene derivatives”, together with Michael adducts of alcohol to the triple bond of 1.
Preparation and Properties of Inclusion Compounds of η3-Allylpalladium Complexes with Cyclodextrins
Authors: Harada Akira , Takeuchi Mizutomo , Takahashi Shigetoshi 
Published: July 2006

Abstract
One-to-one inclusion compounds were obtained in high yields by the treatment of β- and γ-cyclodextrins(CD) with di-μ-chloro-bis(η3-allyl)dipalladium complex and its analogues. The formation of inclusion compounds is selective.
Asymmetric Synthesis of the Both Enantiomers of α-Hydroxy Acids by the Diastereoselective Reduction of Chiral α-Keto Amides with (Complex) Metal Hydrides in the Presence of Metallic Salt
Authors: Soai Kenso , Isoda Takeshi , Hasegawa Hitoshi , Ishizaki Miyuki 
Published: July 2006

Abstract
Effects of the metallic salts and the reducing reagents in the diastereoselective reduction of chiral α-keto amides derived from (S)-proline methyl ester were examined. Lithium borohydride afforded (S)-α-hydroxy acids, whereas diisobutylaluminum hydride afforded (R)-isomers. In the presence of lithium bromide, reduction with LiBH4 afforded (S)-mandelic acid in over 80% e.e.
PHOTOREACTION OF 5,7-DIMETHOXYCOUMARIN WITH ADENOSINE
Authors: Shim Sang Chul , Shim Hyun Kwan , Cho Tae Heung 
Published: July 2006

Abstract
The photoreaction of 5,7-dimethoxycoumarin with adenosine has been studied as a model for skin-sensitization reaction of psoralens. One of the major photoadducts was isolated by preparative column chromatography and reverse-phase high performance liquid chromatography. The photoadduct was not a C4-cycloadduct but simple addition product in contrast to pyrimidine base adducts.
The Synthesis and Properties of 3-Arylcyclohepta[d]isoxazolylium Ions
Authors: Nitta Makoto , Kanomata Nobuhiro 
Published: July 2006

Abstract
3-Arylcyclohepta[d]isoxazolylium tetrafluoroborates were synthesized by the cycloaddition of tricarbonyl(2-5-η-2,4,6-cycloheptatrienone)iron with aromatic nitrile oxides followed by several reactions. The pKR+ values of these ions are less than +1.0 showing that the stability of the tropylium ions is much decreased by the fusion of the isoxazole ring.
Effect of Alkyl-Substituted Pyrrolidones on the Formation of Ethylene Glycol from Synthesis Gas
Authors: Ohgomori Yuji , Mori Shoichiro , Yoshida Shin-ichi , Watanabe Yoshihisa 
Published: July 2006

Abstract
Synthesis of ethylene glycol from synthesis gas via rhodium catalysis in the presence of a pyrrolidone, which has a stronger electron donative substituent than methyl or has two 2-oxopyrrolidinyl groups in the molecule was examined. These compounds facilitate the formation of ethylene glycol.
Importance of Photolysis of Nitrate in Oxidation of Atmospheric Sulfur Dioxide
Authors: Hara Hiroshi , Okita Toshiichi 
Published: July 2006

Abstract
Photochemical oxidation of sulfite in concentrated solution of ammonium nitrate was studied with a mercury lamp and solar radiation as a chemical model system of the water-film on the atmospheric nitrate aerosol. Sulfite was found to be photo-oxidized with first-order reaction kinetics. Temperature and nitrate concentration dependences of the rate constant suggested that low temperature hardly decreased the atmospheric significance of this reaction and that the oxidation favored high conentration.
Efficient Preparation of Anticancer Platinum Pyrimidine Blues. On the Highly Reproducible Reaction Conditions and Purification by Gel Filtration
Authors: Okuno Yohmei , Tonosaki Kumiko , Inoue Takayuki , Yonemitsu Osamu , Sasaki Takuma 
Published: July 2006

Abstract
The employments of dianion such as SO42− and nucleosides as a substrate resulted prevalent formation of platinum blues at 75 °C for 20 h. Gel filtration method was successfully used for purification of the products. It is notable that green species rather than blue complexes gave remarkably high antitumor activity against L1210 cells.
PHOTOLYSIS OF 5-BR0M0-1,3-DIMETHYLURACIL IN SUBSTITUTED BENZENES
Authors: Seki Koh-ichi , Bando Yuko , Ohkura Kazue 
Published: July 2006

Abstract
Photolysis of 5-bromo-1,3-dimethyluracil in toluene, xylene and anisole afforded the anormalously substituted 6-aryl-1,3-dimethyluracils beside the expected products 5-aryl-1,3-dimethyluracils, while the reaction with veratrole occurred exclusively at the 5-position of the uracil ring.
Conversion of Methane to Aromatic Hydrocarbons by Combination of Catalysts
Authors: Otsuka Kiyoshi , Komatsu Takayuki 
Published: July 2006

Abstract
Aromatic hydrocarbons were synthesized by passing CH4 and O2 through the two catalyst beds, i.e., the catalyst active for oxidative coupling of CH4 and that for converting light hydrocarbons to aromatics.
Cycloaddition Reaction of 2,3-Disubstituted Oxiranes with Isocyanates by Highly Activated Catalyst; Ph4SbI–Bu3SnI
Authors: Fujiwara Masahiro , Baba Akio , Tomohisa Yuri , Matsuda Haruo 
Published: July 2006

Abstract
The combination of Ph4SbI and Bu3SnI proved to be a new excellent catalyst for effecting cycloaddition reaction of inactive 2,3-disubstituted oxiranes with isocyanates under neutral conditions, yielding oxazolidinones in high yields, while either of both metal iodides had no activity individually.
In-situ FT-IR Study of Nitric Oxide Adsorbed on Sulfided Co–Mo/Al2O3 Catalyst
Authors: Obara Toshiyuki , Yamada Muneyoshi , Amano Akira 
Published: July 2006

Abstract
Infrared study was made of NO adsorbed on Co–Mo/Al2O3. catalyst subjected to sulfidation/reduction pretreatments. Both Co and Mo served as a site for NO adsorption. The amount of the adsorption depended on the pretreatment and was in the following order: sulfided &gt; sulfided-then-reduced &gt; reduced-then-sulfided &gt; untreated. Higher adsorptive capacity coincided with higher hydrogenation activity.
Crystal Structure and Physical Properties of (BMDT-TTF)SbF6
Authors: Kato Reizo , Kobayashi Hayao , Kobayashi Akiko 
Published: July 2006

Abstract
In a crystal of (BMDT-TTF)SbF6, quasi two-dimensional(2D) intermolecular interactions of BMDT-TTF molecules are observed. This compound was a semiconductor with fairly high room temperature conductivity (ca. 1 S cm−1), and would be a simple model compound for the consideration of electron-electron interaction in quasi 2D half-filled band system.
Decomposition of O-Phosphoserine Accelerated by Copper(II) Complexes
Authors: Murakami Tasuku 
Published: July 2006

Abstract
The decomposition of O-phosphoserine accelerated by the formation of ternary copper(II) complexes with other bidentate ligands has been kinetically investigated in aqueous solutions. The reaction was assigned to a β-elimination and the observed rate constant was expressed as a linear function of [OH−].
Catalytic Oxidation of Hydroquinones and Naphthalenediols to 1,4-Quinones with H2O2 in the Presence of Chromium(VI) Oxide-Bistributyltin Oxide and an Application to Vitamin K1 Synthesis
Authors: Inoue Masami , Uragaki Toshitaka , Enomoto Saburo 
Published: July 2006

Abstract
The oxidation of hydroquinones and naphthalenediols to 1,4-quinones was carried out in the presence of a chromium(VI) compound formed from chromium(VI) oxide and bistributyltin oxide with 30% aqueous H2O2 in benzene-isopropyl ether at 50 °C. The catalyst was fixed on charcoal and used for the oxidation of dihydrovitamin K1 to vitamin K1 in ethyl alcohol.
Generation of Thioketene S-Methylides and Their 1,3-Cycloadditions
Authors: Terao Yoshiyasu , Aono Masahiro , Takahashi Ikue , Achiwa Kazuo 
Published: July 2006

Abstract
Thioketene S-methylide was found to be generated by release of disiloxane from α-(trimethylsilyl)vinyl (trimethylsilyl)methyl sulfoxide and its 1,3-cycloaddition provided a novel method for synthesis of 2-alkylidenetetrahydrothiophenes.