bluuebunny/crossref_metadata_2025_split huggingface dataset:
1-Trimethylsiloxyallylic Iron Complexes as a β-Acylcarbanion Equivalent
Authors: Ito Keiji , Nakanishi Saburo , Otsuji Yoshio 
Published: July 2006

Abstract
3-Iodo-1-trimethylsiloxypropenes, which were derived by the reaction of α,β-unsaturated ketones and esters with iodotrimethylsilane, gave (η3-1-trimethylsiloxyallylic)Fe(CO)2NO complexes upon treatment with tetrabutylammonium tricarbonylnitrosylferrate. These allylic iron complexes reacted regioselectively with 2-propynyl bromide, giving the corresponding 4-pentynyl ketone and 5-hexynoic ester derivatives.
Iodination of Phenols by Use of Benzyltrimethylammonium Dichloroiodate(1–)
Authors: Kajigaeshi Shoji , Kakinami Takaaki , Yamasaki Hiromichi , Fujisaki Shizuo , Kondo Manabu , Okamoto Tsuyoshi 
Published: July 2006

Abstract
The reaction of phenols with benzyltrimethylammonium dichloroiodate(1–) in dichloromethane-methanol in the presence of CaCO3 or NaHCO3 for several hours at room temperature gave iodophenols in good yields.
Complementary Electrocyclic Reactions of o-Quinodimethanes. Highly Efficient Access to 4-Alkylideneisochroman-3-ones and 1-Carbomethoxy-3,4-dihydronaphthalenes
Authors: Shishido Kozo , Komatsu Hironori , Fukumoto Keiichiro , Kametani Tetsuji 
Published: July 2006

Abstract
Thermolysis of 1-alkenylbenzocyclobutenyl-1-carboxylic acid produced 4-alkylideneisochroman-3-ones in good yields via an unprecedented tandem electrocyclic-[1,5]sigmatropic process of o-quinodimethane. Alternatively, thermolysis of the corresponding methyl ester afforded the dihydronaphthalenes via E-transition state in excellent yields.
Kinetic Study on Electron Transfer Photooxygenation of Aromatic Olefins. Quenching Rates of Olefin Radical Cations by Oxygen and Superoxide Anion
Authors: Tsuchiya Masahiro , Ebbesen Thomas W , Nishimura Yoshinobu , Sakuragi Hirochika , Tokumaru Katsumi 
Published: July 2006

Abstract
Quenching rate constants of olefin radical cations by O2 and O2−• were measured using laser flash photolysis. The interaction of stilbene radical cations with O2−• is almost diffusion-controlled; however, the reaction of O2 with the radical cations of 1,2-diarylethylenes is more than three orders less efficient.
Hole Transfer Rates at Illuminated α-Fe2O3 Electrodes, Rate Declining in Highly Exothermic Reactions and Hole Transfer via Surface States
Authors: Itoh Kiminori , Nakajima Yasuo , Fujishima Akira 
Published: July 2006

Abstract
Deactivation of photogenerated holes was effectively suppressed on thin film α-Fe2O3 photoanodes with reducing agents having E0redox of ca. 0.4 V vs. NHE. This suggested that the reaction rate decreases in highly exothermic reactions and that the hole transfer takes place via surface states.
Behavior of Carbonyl Ylide Generated from 3-Chloro-3-(p-nitrophenyl)diazirine and Acetone. 1,3-Dipolar Cycloaddition to Benzaldehyde and Epoxide Formation
Authors: Ibata Toshikazu , Toyoda Jiro , Liu Michael T H 
Published: July 2006

Abstract
A carbonyl ylide generated from 3-chloro-3-(p-nitrophenyl)diazirine and acetone either 1,3-dipolar cycloadds to benzaldehydes to afford 2,2-dimethyl-4-aryl-5-(p-nitrophenyl)-dioxole or intramolecularly cyclizes to give 2-chloro-2-methyl-3-(p-nitrophenyl)-3-propanone and 2-methyl-3-(p-nitrophenyl)-1-propene-3-one as final products.
Stereoselective Preparation of β-C-Glycosides from 2-Deoxyribose Utilizing Neighboring Participation by 3-O-Methylsulfinylethyl Group
Authors: Narasaka Koichi , Ichikawa Yuh-ichiro , Kubota Hideki 
Published: July 2006

Abstract
Acid catalyzed reaction of 2-deoxy-3-O-methylsulfinylethyl-ribofuranosyl acetate with silyl enol ethers proceeded stereoselectively, resulting in the predominant formation of the corresponding β-C-glycosides.
Preparation and Crystal Structure of Binuclear Manganese(II) Complex Exhibiting Multiline ESR Signal
Authors: Nishida Yuzo 
Published: July 2006

Abstract
Binuclear manganese(II) complex with 2-[bis(2-pyridylmethyl)aminomethyl]-4-nitrophenol, which exhibits a multiline ESR signal, was prepared, and its crystal structure was determined by X-ray diffraction method.
A Practical Synthesis of Several Polyhydroxylated Chiral Building Blocks
Authors: Kusakabe Masato , Kato Hiroshi , Sato Fumie 
Published: July 2006

Abstract
A practical method for the synthesis of several useful polyhydroxylated chiral building blocks has been developed. The key reaction is the kinetic resolution of (E)-1-trimethylsilyl-4-alkoxy-1-buten-3-ol or (E)-1-trimethylsilyl-5-alkoxy-1-penten-3-ol using the Sharpless asymmetric epoxidation reaction.
Competitive Photochemical Reactions of Azidomanganese(III) Tetraphenylporphyrin in 2-Methyltetrahydrofuran
Authors: Imamura Taira , Yamamoto Yuichi , Suzuki Toru , Fujimoto Masatoshi 
Published: July 2006

Abstract
The photoirradiation of MnIII(tpp)N3 (tpp = meso-tetraphenylporphinato) in the fluid solutions of 2-methyltetrahydrofuran at temperatures of 0 to −70 °C causes competitive reactions between the oxidation of the central manganese of the complex to yield MnV(tpp)N and the reduction to MnII(tpp). The reduction and the oxidation proceed advantageously at 25 °C and at −80 °C respectively.
Temperature Dependence of Elastic Properties of YBa2Cu3O7−x, Superconductor
Authors: Yoshimoto Mamoru , Tanabe Setsuhisa , Soga Naohiro 
Published: July 2006

Abstract
The elastic properties were investigated for the high Tc superconductor YBa2Cu3O7−x from the liquid-nitrogen temperature to room temperature. Sound velocities and elastic moduli increased with decreasing temperature down to about Tonset (95 K), below which they decreased with decreasing temperature. The Debye temperature was also calculated to be 350 K.
Selective Acceleration Effects of K-Addition in Hydrogenolysis of Cyclohexane over Ruthenium Supported on Silica
Authors: Lin Zheng-zhong , Okuhara Toshio , Misono Makoto 
Published: July 2006

Abstract
By addition of K to Ru/SiO2 catalyst (K/(K+Ru)=0.2), catalytic activity for hydrogenolysis of cyclohexane was enhanced, whereas those for dehydrogenation of cyclohexane and hydrogenation of CO were markedly suppressed.
Magnetic Field Effect as a Probe for Radical Pair Intermediates in the Photoreactions of Nitroaromatic Ethers
Authors: Mutai Kiyoshi , Nakagaki Ryoichi , Tukada Hideyuki 
Published: July 2006

Abstract
Intermediacy of a radical ion pair in the photo-Smiles rearrangement of N-[2-(4-nitro-1-naphthoxy)ethyl]aniline in CH3CN was suggested on the basis of magnetic field effects on the photoreaction of its higher homolog.
Synthesis and Properties of Tetrakis(alkylseleno)tetrathiafulvalene
Authors: Yamochi Hideki , Iwasawa Naoko , Urayama Hatsumi , Saito Gunzi 
Published: July 2006

Abstract
A series of tetrakis(alkylseleno)tetrathiafulvalene (TSeCn-TTF; n = 1–18) has been synthesized. The melting points of this series showed the same dependency on the length of alkyl chains as the sulfur and the tellurium analogues. The g-values of the TYC1-TTF cation radicals (Y = sulfur, selenium, and tellurium) are compared.
Total Synthesis of Dictymal, a B-seco-Dictymenoid Aldehyde from an Alga, Diatyota diohotoma
Authors: Kato Nobuo , Tanaka Shinya , Kataoka Hideo , Takeshita Hitoshi 
Published: July 2006

Abstract
A B-seco-dictymenoid aldehyde, dictymal, was synthesized from two optically active iridoid synthons; the required ring system was constructed by lactol-regulated Cope rearrangement and stereoselective Li-tert-BuOH-in-HMPA reduction of the tetrasubstituted C=C.
One Evidence Supporting that Thymidylate Synthetase and Thymidine Kinase Are the Rate-determining Enzymes of DNA Synthesis in Regenerating Rat Liver
Authors: Tsukamoto Ikuyo , Kojo Shosuke 
Published: July 2006

Abstract
The integration of the activities of thymidylate synthetase and thymidine kinase is shown to correlate closely with the amount of DNA synthesis. Based on the result, these enzymes are suggested to be the rate-determining enzymes of DNA synthesis in regenerating rat liver.
Preparation of Tetrahydrofurfuryl Alcohol Derivatives with Electron-Withdrawing Substituents from 4-Acetoxy-1,5-dibromopentane Derivatives by Treatment with Silver Nitrate
Authors: Mitani Michiharu , Takeuchi Hiroshi , Koyama Kikuhiko 
Published: July 2006

Abstract
When 4-acetoxy-1,5-dibromopentane derivatives having the electron-withdrawing groups at the 1-position, which were obtained by Cu(I)-catalyzed photochemical addition of 2-acetoxy-1,3-dibromopropane to electron-deficient olefins, were subjected to treatment with silver nitrate, tetrahydrofurfuryl alcohol derivatives with the electron-withdrawing groups at the 5-position were obtained.
Gas Phase Negative Ion Chemistry of 6-Oxa-3-sila- and Germabicyclo[3.1.0]hexanes
Authors: Damrauer Robert , Weber William P , Manuel Georges 
Published: July 2006

Abstract
Ion-molecule reactions between fluoride and 1,3,3-trimethyl-6-oxa-3-silabicyclo[3.1.0]hexane, 2,7-dimethyl-2,3:7,8-diepoxy-5-spiro[4.4]nonane, and 3,3-dimethyl-6-oxa-3-germabicyclo[3.1.0]-hexane are reported. Attack by fluoride at either silicon or germanium results in loss of either isoprene or butadiene, respectively. An analogous reaction with amide ion is reported.
A Novel Functionalized Polysulfides. Preparation of Polysulfides Containing Spiroorthocarbonate Moiety in the Main Chain
Authors: Tagoshi Hirotaka , Endo Takeshi 
Published: July 2006

Abstract
Preparation of polysulfides containing spiroorthocarbonate structure in the main chain by the radical polyaddition of unsaturated spiroorthocarbonate, 2,7-dimethylene-1,4,6,9-tetra-oxaspiro[4.4]nonane, with dithiols is described.
Kinetics of Pyridine Derivatives as Accelerators for the Incorporation Reaction of Cadmium(II) into Porphyrin and Association Behavior of the Accelerators with Porphyrin
Authors: Kawamura Kunio , Kasahara Hiroshi , Igarashi Shukuro , Yotsuyanagi Takao 
Published: July 2006

Abstract
Incorporation reaction rate constants of cadmium(II) ion into 5,10,15,20-tetrakis(4-sulphonatophenyl)porphine (H2tpps) in the presence of 8 kinds of pyridine derivatives as accelerators were determined. And association constants for 5 kinds of the accelerators with H2tpps were also determined; the logarithmic values of which were proportional to the number of pyridine rings. The association constant is found to be one of the most important factors for controlling the acceleration effect.
Photoassisted C–H Bond Activation with RhCl(CO)(PR3)2 in the Presence of Isocyanides Leading to Catalytic Formation of Aldimines
Authors: Tanaka Masato , Sakakura Toshiyasu , Tokunaga Yuko , Sodeyama Touru 
Published: July 2006

Abstract
C–H bond activation of benzene and pentane in the presence of isocyanides was promoted by RhCl(CO) (PR3)2 to result in the isocyanides insertion into C–H bonds.
Catalytic C–H Activation. Silylation of Arenes with Hydrosilane or Disilane by RhCl(CO)(PMe3)2 under Irradiation
Authors: Sakakura Toshiyasu , Tokunaga Yuko , Sodeyama Touru , Tanaka Masato 
Published: July 2006

Abstract
Direct silylation of arenes with triethylsilane or hexamethyldisilane were catalyzed by RhCl(CO)(PMe3)2 under irradiation.
Asymmetric Diels–Alder Reaction by the Use of a Chiral Titanium Catalyst with Molecular Sieves 4A. Remarkable Solvent Effect on the Enantioselectivity
Authors: Narasaka Koichi , Inoue Masayuki , Yamada Tohru , Sugimori Jun , Iwasawa Nobuharu 
Published: July 2006

Abstract
A remarkable effect of solvent on the enantioselectivity was observed in the asymmetric Diels–Alder reaction of 3-(2-alkenoyl)-1,3-oxazolidin-2-ones and dienes catalyzed by a chiral titanium reagent, and the Diels–Alder adducts were obtained in high enantioselectivity when alkyl-substituted benzenes were employed as the solvent.
Unusual Effect of Methylation of a Benzene Ring on the Strength of Phenyl–Phenyl Interaction
Authors: Ito Masato M , Kato Jun-ichi , Takamura Ichiro , Wakatsuki Kyoko , Endo Tadashi 
Published: July 2006

Abstract
Gas-chromatographic studies have shown that the strength of the weak interaction between a phenyl group in a stationary liquid and a benzene molecule in a sample alters most greatly when, among various substituents examined (e.g., Me, Et, Cl, and OMe), a methyl group—a “simple” nonpolar group—is introduced into a benzene ring in the sample.
Estimation of α-Helix Content in Keratin Fibers by Differential Scanning Calorimetry
Authors: Koga Joichi , Shibano Michihiro , Nishio Etsuo 
Published: July 2006

Abstract
In the DSC curves of α-keratin (intact wool keratin) an endothermic peak was observed at the temperature around 232 °C which had been interpreted in terms of helix melting point. When wool fiber was stretched the native α-keratin transformed to stretched β-keratin and the meantime, the endothermic peak decreased with stretching and finally disappeared. This DSC measurement was thought to be great advantage to confirm the existence of α-form in keratin fibers.
Crystal and Electronic Structures of (BEDSe-TSeF)AuBr2
Authors: Kato Reizo , Kobayashi Hayao , Kobayashi Akiko , Mori Takehiko , Inokuchi Hiroo 
Published: July 2006

Abstract
The crystal of the semiconducting 1:1 compound of BEDSe-TSeF, (BEDSe-TSeF)AuBr2 (ρR.T.=7 Ω cm, Ea=0.13 eV) contains a two-dimensional array of closely spaced donor molecules. Half the AuBr2 anions are distributed into this cation sheet, and electrostatically stabilize the sheet structure, indicating a new way to obtain stable multi-dimensional crystal structure.
An Enantioselective Synthesis of (−)-Fortamine1)
Authors: Kamiyama Keiji , Kobayashi Susumu , Ohno Masaji 
Published: July 2006

Abstract
The aminocyclitol moiety of fortimicin A, (−)-fortamine, was synthesized in an enantioselective manner starting from the chiral half ester, easily available by the enantioselective hydrolysis of a symmetrical diester with pig liver esterase. The present approach provides a general and efficient route to variously substituted 1,4-diaminocyclitol-derivatives.
Z-1,2-Bis(t-butyldimethylsilyl)-1,2-bis(trimethylsilyl)ethylene. The Most Crowded Known cis-Olefin
Authors: Sakurai Hideki , Ebata Keisuke , Kabuto Chizuko , Nakadaira Yasuhiro 
Published: July 2006

Abstract
Z-1,2-Bis(t-butyldimethylsilyl)-1,2-bis(trimethylsilyl)ethylene was prepared, the structure being determined by X-ray crystallography. Remarkably, the compound is fixed to cis configuration and a considerable pyramidarization occurs at olefinic carbons with large twisting of the double bond.
Matrix Isolation and Ultraviolet Spectra of Germylenes
Authors: Ando Wataru , Tsumuraya Takeshi , Sekiguchi Akira 
Published: July 2006

Abstract
Some organogermylenes were isolated in a hydrocarbon matrix at low temperature by the photolysis of 7-germanorbornadienes or bis(trimethylsilyl)germanes. The germylenes show electronic absorption bands at 420–560 nm.
Studies on the Stereochemistry in the Alkylation of Enolate Ion of Cyclic β-Keto Ester with Sulfonium Salts Containing Optically Active Alkyl Groups
Authors: Kobayashi Michio , Umemura Kazuyuki , Matsuyama Haruo 
Published: July 2006

Abstract
Alkylation of cyclic β-keto ester with racemic sulfonium salts containing optically active alkyl groups such as (S)-2-octyl and (S)-2-butyl was found to afford C-alkylated products with inversion of configuration at asymmetric alkyl carbon atom. Stereochemical reaction course via formation of S–O sulfurane intermediate and successive stereoselective intramolecular alkyl migration to enolate is described.
The Chemistry of Isopyrene (Azuleno[2,1,8-ija]azulene). Oxidations
Authors: Vogel Emanuel , Schmalstieg Lutz , Weyer Hans-Jürgen , Gleiter Rolf 
Published: July 2006

Abstract
The nonbenzenoid aromatic hydrocarbon isopyrene undergoes some exceptional—synthetically useful—oxidative transformations, in accord with theoretical arguments, it reacts with bidentate oxidants preferentially at the “central C=C bond” to give bridged [H]annulenes with an anthracene perimeter.
Preparation of Tetrahydropyran Derivatives with α-Electron-Withdrawing Substituents from 1,5-Dibromopentane Derivatives by Treatment with Silver Nitrate
Authors: Mitani Michiharu , Takeuchi Hiroshi , Koyama Kikuhiko 
Published: July 2006

Abstract
When 1,5-dibromopentane derivatives having the electron-withdrawing groups at one terminus, which were obtained by Cu(I)-catalyzed photochemical addition of 1,3-dibromopropanes to electron-deficient olefins, were subjected to treatment with silver nitrate, tetrahydropyran derivatives with the electron-withdrawing groups at the α-position to the oxygen atom were obtained.
Stereochemical Investigation of Photoepoxidation of Dioxetane-forming Olefins in the Presence of Sulfur Dioxide
Authors: Ando Wataru , Sonobe Hideki , Akasaka Takeshi 
Published: July 2006

Abstract
Photosensitized oxygenation of two stereoisomeric di-t-butyl-bis(bicyclo- [3.3.1] non-9-y1idenes) in the presence of sulfur dioxide afforded the corresponding epoxide stereospecifically.
One Step Vinylic Chlorination with Benzeneseleninyl Chloride
Authors: Kamigata Nobumasa , Satoh Takeshi , Yoshida Masato , Kobayashi Michio 
Published: July 2006

Abstract
The reaction of benzeneseleninyl chloride with olefins in the presence of aluminum chloride or ruthenium(II) phosphine complex under mild conditions was found to give α-chloro-olefins in one step.
Reaction of Arylazo Aryl Sulfone with Olefins in the Presence of Tetrakis(triphenylphosphine)palladium(0)
Authors: Kamigata Nobumasa , Kondoh Tetsuya , Kameyama Masayuki , Satoh Takeshi , Kobayashi Michio 
Published: July 2006

Abstract
Catalytic reaction of arylazo aryl sulfone with olefins in the presence of tetrakis(triphenylphosphine)palladium(0) was investigated. Arylation of olefins was the major product, and 1:1 adduct of arylazo and arenesulfonyl group to olefins was obtained as minor product. Diarylpalladium(II) species was proposed as an intermediate in this reaction.
Ester Enolate Claisen Rearrangement via Boat-Like Transition State
Authors: Uchiyama Harumi , Kawano Mika , Katsuki Tsutomu , Yamaguchi Masaru 
Published: July 2006

Abstract
The Claisen rearrangement of ester enolates with appropriate metal ions bearing bulky cyclopentadienyl ligands was found to proceed through a boat-like transition state leading to the products with the different configuration from that expected from a chair-like transition state.
A Convenient Preparation of Optically Active 1,1′-Binaphthyl-2,2′-diol via Enzymatic Hydrolysis of the Racemic Diester
Authors: Miyano Sotaro , Kawahara Kan , Inoue Yoshio , Hashimoto Harukichi 
Published: July 2006

Abstract
Commercially available porcine pancreatic lipase can conveniently be utilized for a highly enantioselective hydrolysis of valeric acid diester of racemic 1,1′-binaphthyl-2,2′-diol to give the (S)-diol (95% ee at 46% conversion).
Cytotoxic Squalene-Derived Polyethers from the Marine Red Alga Laurencia obtusa (Hudson) Lamouroux
Authors: Suzuki Teruaki , Takeda Satoshi , Suzuki Minoru , Kurosawa Etsuro , Kato Arata , Imanaka Yoshihiko 
Published: July 2006

Abstract
Five new cytotoxic triterpenoids with squalene carbon skeleton have been isolated from the title alga. The structures of 15(28)-anhydrothyrsiferyl diacetate, 15-anhydrothyrsiferyl diacetate, and magireol-A were confirmed by the spectral and chemical methods. The structures of magireol-B and -C were deduced from the spectral data.
Photolyses of 2-(Alkylthio)carbonyl-2-(arylethyl)propyl Cobaloxime
Authors: Tada Masaru , Nakamura Tatsuya , Matsumoto Mitsuhiro 
Published: July 2006

Abstract
2-(Alkylthio)carbonyl-2-(arylethyl)propyl cobaloximes were photolyzed. When an aryl group is phenyl, a major process is a radical cyclization to give 2-(alkylthio)carbonyl-2-methyltetralin. On the other hand, β-thiolactone is a major product when an aryl group is mesityl and an alkyl group is t-butyl.
Enantioselective Syntheses of (+)- and (−)-Frontalin
Authors: Ohwa Masaki , Eliel Ernest L 
Published: July 2006

Abstract
(+)- and (−)-Frontalin have been obtained from a chiral 1,3-oxathiane precursor in a short (3-step) synthesis in moderate (70%) enantiomeric excess (e.e.). A longer (6-step) modification gives the two enantiomers in 96% e.e. Overall yields range from 28 to 43%.
Decomposition of Methanol to Syngas over AlPO4-Supported Nickel Catalyst
Authors: Tada Akio , Yoshino Takumi , Itoh Hidenobu 
Published: July 2006

Abstract
An AlPO4-supported nickel catalyst exhibited significantly higher activity and selectivity for the title reaction than such conventional catalysts as Ni/Al2O3, Ni/SiO2, Ni/TiO2, and CuO–ZnO–Cr2O3. The effects Of Ni loading and temperatures of reduction and reaction on its catalytic property were also investigated.
Oxidoreduction between Cycloalkanols and Cycloalkanones in the Cultured Cells of Nicotiana tabacum. Simulation of the Time-courses in the Oxidation of (+)-Borneol and the Reduction of (−)-Carvomenthone
Authors: Suga Takayuki , Izumi Shunsuke , Hirata Toshifumi , Hamada Hiroki 
Published: July 2006

Abstract
The time-courses in the oxidation of (+)-borneol and the reduction of (−)-carvomenthone in the cultured cells of Nicotiana tabacum were simulated on the basis of the permeability of 5- to 7-membered cycloalkanols and their corresponding cycloalkanones into the cultured cells and the 13C NMR chemical shift of the carbonyl carbon of (+)-camphor which is the oxidation product of (+)-borneol and (−)-carvomenthone which is a substrate for the reduction, respectively.
Reaction of Bis(heptafluorobutyryl) Peroxide with Carbanions and a Thiolate Anion
Authors: Yoshida Masato , Shimokoshi Kazuaki , Kobayashi Michio 
Published: July 2006

Abstract
In the reaction of bis(heptafluorobutyryl) peroxide with carbanions and a thiolate anion, two types of reactions were observed; one is an electron transfer reaction to give perfluoropropylated compounds and the other is a nucleophilic substitution.
Crystal and Electronic Structures of a New Molecular Superconductor, κ-(BEDT-TTF)2I3
Authors: Kobayashi Akiko , Kato Reizo , Kobayashi Hayao , Moriyama Shinji , Nishio Yutaka , Kajita Koji , Sasaki Wataru 
Published: July 2006

Abstract
The crystal of a new ambient-pressure superconductor, κ-(BEDT-TTF)2I3 belongs to the monoclinic system with space group P21/c and a=16.387, b=8.466, c=12.832 Å and β=108.56°. The 2-dimensional(2D) metal sheets composed of paired BEDT-TTF molecules and the I3 anion sheets are arranged alternately along the a. direction. The orientation of the neighbouring paired molecules is almost perpendicular to each other.
1H-Nuclear Magnetic Resonance Studies on Cobalt(II) Complexes of N-Alkyl-octaethylporphyrins
Authors: Aoyagi Katsuhiro , Toi Hiroo , Aoyama Yasuhiro , Ogoshi Hisanobu 
Published: July 2006

Abstract
High-spin cobalt(II) complexes of N-alkyl-octaethylporphyrin have been characterized by 1H-NMR measurements. Proton signals of N-alkyl groups and aromatic meso-protons were assigned by deuteration method. Axially coordinated imidazole resonance appeared at very low magnetic field.
A Convenient Preparation of α-(p-Hydroxy- or p-Aminophenyl) Carbonyl Compounds. Addition–Reduction Reaction of Tin(II) Enolate with p-Benzoquinone and Its Mono-N-tosylimino Derivative
Authors: Mukaiyama Teruaki , Clark Richard S J , Iwasawa Nobuharu 
Published: July 2006

Abstract
Tin(II) enolates react with p-benzoquinone and its mono-N-tosylimino derivative to give 1,2-adducts in good yield. These can be reduced in situ to α-(p-hydroxy- or p-aminophenyl) carbonyl derivatives by addition of dichloromethylsilane and dimethylaminopyridine.
High Catalytic Activity of Sm2O3 for Oxidative Coupling of Methane into Ethane and Ethylene
Authors: Otsuka Kiyoshi , Komatsu Takayuki 
Published: July 2006

Abstract
The catalytic activity of Sm2O3 for oxidative coupling of CH4 was measured at the conditions: P(CH4)/P(O2)=6, P(O2)=14.5 kPa, W/F=0.000223–0.0891 g·h·l−1 , and T=750 °C. STY of C2-compounds reached to 2.98 mol·g−1·h−1 at W/F of 0.000223 g·h·l−1. The catalytic activity of Sm2O3 was one to three orders of magnitude greater than those reported for other metal oxides.