bluuebunny/crossref_metadata_2025_split huggingface dataset:
Silver-promoted Cobalt Oxide Catalysts for Direct Decomposition of Nitrogen Monoxide
Authors: Hamada Hideaki , Kintaichi Yoshiaki , Sasaki Motoi , Ito Takehiko 
Published: May 2006

Abstract
Silver as a catalyst additive showed an excellent effect to improve the catalytic activity of cobalt oxide for the decomposition of nitrogen monoxide below 773 K. Reaction inhibition by oxygen was very much relieved by using Ag–Co oxide catalysts.
Photolysis of 1,1,1-Triphenyl-2-alkenes and Methyl Triphenylacetate
Authors: Shi Min , Okamoto Yoshiki , Takamuku Setsuo 
Published: May 2006

Abstract
Upon UV irradiation in methanol 1,1,1-triphenyl-2-alkene or methyl triphenylacetate underwent two kinds of α,α-elimination of two phenyl groups and phenyl-alkenyl groups or phenyl-methoxycarbonyl groups to give biphenyl, 1-phenylalkene or methyl benzoate, and two kinds of corresponding carbene intermediates, which inserted into the O–H bond of methanol to afford two kinds of methyl ethers, respectively.
Photoreaction of the Adduct between (η-Cyclopentadienyl)(1,2-dicyano-1,2-ethylenedithiolato)cobalt(III) and Tributylphosphine. Oxygenation of Coordinated Phosphine by Singlet Oxygen
Authors: Hatano Hiroshi , Kajitani Masatsugu , Akiyama Takeo , Sakaguchi Yoshio , Nakamura Junko , Hayashi Hisaharu , Sugimori Akira 
Published: May 2006

Abstract
The title complex [Co(cp)(S2C2(CN)2)(PBu3)] gives [Co(cp)(S2C2(CN)2)] and phosphine oxide (O=PBu3) under irradiation with methylene blue or rose bengal as sensitizer in the presence of oxygen. This reaction proceeds via oxidative elimination of the coordinated phosphine by singlet oxygen. Under irradiation with 254 nm light, the adduct plays the role of a triplet sensitizer.
Silver(l) Ion Selective Electrode Based on Dithlamacrocycles
Authors: Casabo Jaume , Perez-Jimenez Consuelo , Escriche Lluis , Alegret Salvador , Martinez-Fabregas Esteve , Teixidor Francesc 
Published: May 2006

Abstract
Poly(vinyl chloride) membrane all solid state electrode based on the macrocyclic polythiaether 6-oxa-3,9-dithiabicycle[9,3,1]-pentadeca-1(15)-11,13-triene, has been developped. The electrode exhibits a Nernstian linear response to silver(l) ion from 10−6 to 10−1 M, good selectivity (no response for Hg(ll)) and short response time (&lt;10 s).
Formation of Two Exciplexes in Cadmium-Photosensitized Reaction of Aliphatic Diamines
Authors: Yamamoto Shunzo , Itami Masato , Sueishi Yoshimi , Nishimura Norio 
Published: May 2006

Abstract
Two emission bands have been observed during irradiation of mixtures of some aliphatic diamines and cadmium vapor with cadmium 326.1 nm radiation. From the temperature and pressure dependences of emission intensities of the two bands, we have concluded that they are assigned to two kinds of 1:1 exciplexes between an excited cadmium atom and a diamine molecule.
Charge Transfer Reaction Inverse Photoemission Spectroscopy (CTRIPS) at a Gold/Acetonitrile Solution Interface. Evidence for Photon Emission via Surface States
Authors: Uosaki Kohei , Murakoshi Kei , Kita Hideaki 
Published: May 2006

Abstract
The emission of light caused by electron transfer reaction at a gold electrode in acetonitrile solution containing one of three aromatic redox compounds (benzophenone, t-stilbene and benzonitrile) was studied. From the potential dependence of the spectrum, we proposed that the emission is due to charge transfer reaction inverse photoemission (CTRIP) process which takes place via surface states.
Mixed Oxide Capacitor of BaTiO3–PbO as a New Type CO2 Gas Sensor
Authors: Ishihara Tatsumi , Kometani Kazuhiro , Hashida Masayo , Takita Yusaku 
Published: May 2006

Abstract
Mixed oxide capacitor of BaTiO3–PbO is studied as the sensor for CO2 detection. The oxide gave the large capacitance change on exposure to CO2. The CO2 sensing characteristics strongly depended on the operation temperature as well as the operation frequency. A linear relationship exists between the sensitivity and the concentration of CO2 below 6%.
A Novel Synthesis of 3,4-Dihydro-2H-1-benzothiopyrans. Acid-Catalyzed Intermolecular Cycloaddition of Acetylenic Alcohols with Arenethiols
Authors: Ishino Yoshio , Masaoka Toshihiro , Hirashima Tsuneaki 
Published: May 2006

Abstract
Reaction of the acetylenic alcohols with arenethiols in the presence of p-toluenesulfonic acid (p-TsOH) gave 3,4-dihydro-2H-1-benzothiopyrans (thiochromans) in good to excellent yields, the reaction of which may involve intermolecular cycloaddition via cationic intermediates.
Local Collapse of a Monolayer on an Aqueous Subphase at a Fairly High Surface Pressure Lower than Its Collapsing Pressure Visualized by Electron Microscopy
Authors: Iriyama Keiji , Araki Toshinari 
Published: May 2006

Abstract
Local collapse of a monolayer on an aqueous subphase at a high surface pressure below its collapsing pressure could be apparently visualized on the electron microscopic scale.
Convenient Synthesis of Some Functionalized Dewar Benzenes and Effect of Chlorine Substitution on the Rates of Their Aromatization
Authors: Tsuji Takashi , Watanabe Harumi , Tanaka Jun , Inada Mari , Nishida Shinya 
Published: May 2006

Abstract
1,4-Bis(hydroxymethyl) Dewar benzenes were prepared in five steps from dimethyl acetylenedicarboxylate in ca. 10% overall yield and rates of their aromatization were measured: dichloro substitution at both the 2,5- and 2,6-positions led to substantial deceleration of the isomerization.
A Pronounced Catalytic Activity of an Acidic Cesium Salt of 12-Tungstophosphoric Acid for Ester Decomposition in Solid–liquid System
Authors: Okuhara Toshio , Nishimura Toru , Ohashi Kazutaka , Misono Makoto 
Published: May 2006

Abstract
The acidic Cs salt of 12-tungstophosphoric acid (Cs/polyanion = 2.5) was much more active for liquid phase decomposition of cyclohexyl acetate than Nafion, HY-zeolite, H-ZSM-5, Al3+-exchanged montmorillonite, and SO42−/ZrO2.
CVD Preparation of Vanadium-oxide Supported on Silica Catalyst and Its Structure
Authors: Inumaru Kei , Okuhara Toshio , Misono Makoto 
Published: May 2006

Abstract
Elementary processes of the formation of vanadium-oxide on SiO2 by CVD of VO(OC2H5)3 were studied. All Si–OH groups on the SiO2 reacted with VO(OC2H5)3 to form either Si–O–V(=O)(OC2H5)2 or (Si–O)2–V(=O)(OC2H5). By the repeated CVD, highly dispersed V2O5 overlayer was formed as confirmed by XPS and XRD. This catalyst was much more active than V2O5/SiO2 prepared by an impregnation method for oxidative dehydrogenation of ethanol.
Diazo-Coupling with a Resorcinol-Based Cyclophane. A New Water-Soluble Host with a Deep Cleft
Authors: Manabe Osamu , Asakura Kazumichi , Nishi Tadahiko , Shinkai Seiji 
Published: May 2006

Abstract
A new water-soluble host molecule was synthesized by the diazo-coupling reaction of a resorcinol-based tetrameric cyclophane and p-sulfonatobenzenediazonium. In an aqueous system the product could include large guest molecules such as adamantane, pyrene, and coronene, the association constants being (2.0–4.6) ×104 M−1.
Enantiospecific Construction of Quaternary Carbon Center via Intramolecular 1,3-Dipolar Cycloaddition. A New Route to Natural (−)-Mesembrine from (S)-O-Benzylglycidol
Authors: Takano Seiichi , Samizu Kiyohiro , Ogasawara Kunio 
Published: May 2006

Abstract
Thermolysis of the aziridine ester, obtained from (S)-O-benzylglycidol, afforded the pyrrolidine lactone bearing a quaternary carbon center stereo-specifically in a good yield via intramolecular cycloaddition of the 1,3-dipole. The adduct (11) could be converted into natural (−)-mesembrine, the major alkaloid of Sceletium namaquense, and its N-demethyl derivative via a 8 step sequence of reactions.
Synthesis of Bidentate Lewis Acids and Their Properties as Host Molecules
Authors: Narasaka Koichi , Sakurai Hidehiro , Kato Takashi , Iwasawa Nobuharu 
Published: May 2006

Abstract
Bidentate Lewis acids, bis-arylboronates of 2,3,6,7-tetrahydro-1,1,5,5-tetramethylindacene-2R*,3R*,6R*,7R*-tetraol were synthesized from tetramethylindacene and were found to form complexes selectively with 4-aminopyridine derivatives.
An Oxygen Sensor Composed of Tightly Stacked Membrane/Electrode/Electrolyte
Authors: Katakura Katsumi , Noma Atsushi , Ogumi Zempachi , Takehara Zen-ichiro 
Published: May 2006

Abstract
A new type amperometric oxygen sensor operating at room temperature is constructed using Nafion, porous platinum cathode directly deposited on Nafion, and a polyethylene film covering the cathode surface directly. An oxygen reduction current is limited by oxygen diffusion rate through the diffusion-limiting polyethylene film and it changes in proportion to oxygen concentration of gases up to 100%.
Novel Disilylation and Germylation of Coordinated Dinitrogen in cis-[W(N2)2(PMe2Ph)4]
Authors: Oshita Hiroyuki , Mizobe Yasushi , Hidai Masanobu 
Published: May 2006

Abstract
When treated with a mixture of ClMe2SiCH2CH2SiMe2Cl and excess NaI, cis-[W(N2)2(PMe2Ph)4] (1) afforded , the structure of which was determined by the X-ray analysis. On the other hand, treatment of 1 with Me3GeCl in the presence of excess Nal gave two germylated dinitrogen complexes trans-[WI(NNGeMe3)(PMe2Ph)4] and mer-[WI2(NNHGeMe3)(PMe2Ph)3].
New Cembranoids from the Okinawan Soft Coral Sinularia mayi
Authors: Kusumi Takenori , Yamada Kengo , Ishitsuka Midori O , Fujita Yoshiharu , Kakisawa Hiroshi 
Published: May 2006

Abstract
Three new cembranoids, (+)-isosarcophine (1), (+)-8-hydroxyisosarcophytoxide-6-ene, and (+)-methyl cembra-1,3,7,11-tetraene-16-carboxylate have been isolated from Sinularia mayi, and their structures including the absolute configuration of 1 have been determined spectroscopically and by means of chemical reaction.
Photosensitized Isomerization of Hexamethyl(Dewar benzene) by Interactions with 1,4-Dicyanonaphthalene-Arene Exciplexes. An Adiabatic Triplex Pathway
Authors: Masaki Yasuhiro , Uehara Yoshikazu , Yanagida Shozo , Pac Chyongjin 
Published: May 2006

Abstract
The isomerization of Hexamethyl(Dewar benzene) to hexamethylbenzene is photosensitized by 1,4-dicyanonaphthalenearene exciplexes. Spectroscopic and quantum-yield studies suggest that the isomerization proceeds mostly through an adiabatic pathway from hypothetical termolecular excited complexes (triplexes).
An Ultramicrostructured Photoelectrode System Composed of TiO2 Single Crystal and Layered SiO2 and Pt Thin Film
Authors: Hiramoto Masahiro , Hashimoto Kazuhito , Sakata Tadayoshi 
Published: May 2006

Abstract
An ultramicrostructured photoelectrode system composed of a TiO2 single crystal and thin films of SiO2 and Pt was prepared by exposing the vertical section of the layered SiO2 and Pt film. The distance between the semiconductor and metal, i.e., the thickness of the SiO2 layer is made very thin (ca.140 nm). This electrode showed photoresponse under irradiation in the presence of vapor of water, ammonia, ethanol and acetone. This is the first micro-photoelectrode system which can work in the gas phase.
Formation of N21,N22-Etheno-Bridged Meso-Tetraphenylphlorins
Authors: Setsune Jun-ichiro , Ishimaru Yoshihiro , Kitao Teijiro 
Published: May 2006

Abstract
N21,N22-(1,2-Diphenyletheno)-meso-tetraphenylporphin hydroperchlorate was reduced by NaBH4 to the 5H-phlorin and deprotonated by NaOH to the free base. However, the N21,N22-hydroxymethyletheno derivative underwent intramolecular attack of the bridge hydroxy group on the 10-meso position to give the novel 10H-phlorin under basic conditions.
Electron Microscopic Evidence for Thermally Induced Phase Separation in a Monolayer Containing Dye-Surfactant and Fatty Acid
Authors: Iriyama Keiji , Araki Toshinari , Iwasaki Takashi 
Published: May 2006

Abstract
An evidence for the thermally induced phase separation in a mixed monolayer on an aqueous subphase was electron microscopically visualized.
New Catalytic Polymerization of Pyrrole
Authors: Toshima Naoki , Tayanagi Jun-ichi 
Published: May 2006

Abstract
Pyrrole can be easily polymerized to produce polypyrrole by using an AlCl3–CuCl–O2 cayalytic system. The yield of polypyrrole was very high and more than 600% based on the amount of CuCl used. The conductivity of the pressed polypyrrole was 10−2 S cm−1.
Hemin-Catalyzed Addition Reactions of Thiophenols to Styrene
Authors: Kano Koji , Takeuchi Masayuki , Hashimoto Shizunobu , Yoshidat Zen-ichi 
Published: May 2006

Abstract
Hemin promotes the Markovnikov-type addition reactions of thiols (origins of the thiols are their disulfide derivatives) to styrene in benzene–ethanol (1:1) containing NaBH4. The plausible reaction mechanism has been discussed.
Synthesis, Molecular Structure, and Some Reactions of Bis(dimethylphenylsilyl) Ketone
Authors: Narasaka Koichi , Saito Nobuo , Hayashi Yujiro , Ichida Hikaru 
Published: May 2006

Abstract
The tide compound was prepared from bis(methylthio)methane as a crystalline compound. The molecular structure was determined by X-ray crystallographic analysis, and reactions with alkyl metals and a Wittig reagent were examined.
Investigation on Photochemical Reduction of NAD+ to NADH in Liposomal Solution
Authors: Umeda Keisuke , Nakamura Asao , Toda Fujio 
Published: May 2006

Abstract
In the reaction system with AOH+ as a photosensitizer, the generation of NADH stopped after 20 min irradiation at low level. On the other hand, when a photosensitizer was Chla, non-stop generation of NADH was observed after 80 min irradiation. This is because NADH generated was consumed by a side reaction in AOH+-reaction system, whereas it does not occur in Chla-reaction system.
Stabilization of Stearic Acid LB Monolayer Film by Addition of n-Alkylthiol
Authors: Sawaguchi Takahiro , Nishizawa Matsuhiko , Matsue Tomokazu , Uchida Isamu 
Published: May 2006

Abstract
Stability of stearic acid LB monolayer in an aqueous solution is remarkably improved by the addition of n-alkylthiol. n-Alkylthiol adsorbs strongly on gold surface and acts as anchor of the stearic acid monolayer so as not to diffuse away from the substrate.
Dichotomous Reactivity of Halodisilanes in Oxidative Addition with Pt(PEt3)3. Formation of Bis(silyl)- or (Disilanyl)platinum Complexes
Authors: Yamashita Hiroshi , Kobayashi Toshi-aki , Hayashi Teruyuki , Tanaka Masato 
Published: May 2006

Abstract
The Si-Si bond in XSiMe2SiMe2Y (X, Y = F, F; Cl, Cl; Cl, Me; Br, Me) was readily cleaved with Pt(PEt3)3 to give cis-(XMe2Si)(YMe2Si)Pt(PEt3)2 complexes. On the other hand, ISiMe2SiMe3 selectively underwent oxidative addition at the Si–I bond to result in the formation of trans-(Me3SiMe2Si)PtI(PEt3)2.
Competitive Homogeneous Chemiluminescent Immunoassay Using Antigen-modified Sheep Red Blood Cells
Authors: Tatsu Yoshiro , Yoshikawa Susumu 
Published: May 2006

Abstract
A novel method for immunoassay is reported. A competitive assay for dinitrophenylated bovine gamma globulin (DNP-GGB) was performed using anti-DNP serum and DNP-sheep red blood cells (DNP-SRBC). After complement-mediated hemolytic reaction, the chemiluminescent measurements were performed without any separation procedure. The sensitivity was 0.1 μg/ml of DNP-BGG.
Electrodeposition of Sm–Co from Formamide Solution
Authors: Sato Yuichi , Ishida Hiroshi , Kobayakawa Koichi , Abe Yuki 
Published: May 2006

Abstract
Anhydrous samarium chloride, cobalt chloride and their coexisted solution of formamide were electrolyzed at constant current. From the results of XPS analysis of the deposits, their metallic states were found in the inside of the film. Cobalt rich codeposited film showed the saturation magnetization of 840 emu/cc and the coercive force of 18.1 Oe.
Rate of Spin-Trapping of Superoxide as Studied by Chemiluminescence
Authors: Gotoh Naohiro , Niki Etsuo 
Published: May 2006

Abstract
A novel method was developed and applied to the measurement of the rate constants for the interaction of superoxide with various spin traps. This method is based on the effect of spin traps on the chemiluminescence intensity emitted from the interaction of superoxide with a Cypridina luciferin analog, 2-methyl-6-phenyl- 3,7-dihydroimidazo[1,2-a]pyrazin-3-one.
Generalization, Alteration, and Enhancement of the Stereoselectivity in the Cieplak-Mode Reductions of 4-Alkoxy(or Silyloxy)cyclohexanones
Authors: Nagao Yoshimitsu , Goto Michimasa , Ochiai Masahito 
Published: May 2006

Abstract
Reductions of 4-alkoxy(or silyloxy)cyclohexanones with LiAlH4, AlH(i-Bu)2, and Li(s-Bu)3BH afforded the corresponding cis alcohols in 73–80% selectivities. Similar reduction of 4-benzyloxy- and 4-t-butyldiphenylsilyloxy-cyclohexanones with AlH(i-Bu)2 in the presence of EtAlCl2 gave trans alcohol (93% selectivity) from the former and cis alcohol (94% selectivity) from the latter, respectively.
Aromaticity of a Newly Synthesized Azulenone, Cyclohepta[b]thiophen-2-one
Authors: Machiguchi Takahisa , Yamabe Shinichi 
Published: May 2006

Abstract
Tropothione reacts with chloroketene to give 1-thia-2-azulenone (1) in addition to a 1:2 adduct. An MO calculation suggests that the latter is formed via a novel one-site electrophilic addition of chloroketene to 1.
Magnetic Field Effects and Reaction Mechanism in Photoredox Reaction of Nitro Group
Authors: Ishii Yukiko , Tukada Hideyuki , Nakagaki Ryoichi , Mutai Kiyoshi 
Published: May 2006

Abstract
Competitive inter- and intramolecular photoredox reactions of the nitro group in homologous series of compound, p-O2NC6H4O(CH2)nOC6H4NMe2-m (n = 2–12) are found to occur at the N-methyl group. The mechanistic aspects of the reactions are discussed in connection with the magnetic field effects on the reaction rate.
Chemical Constituents of Macromolecular Phase of Akabira Coal
Authors: Nomura Masakatsu , Matsubayashi Kenji , Miyake Mikio 
Published: May 2006

Abstract
A Residue fraction from extraction of Akabira coal was analyzed by Curie point pyrolysis, which showed a great increase of volatile from at 500 °C to 590 °C. A GC-MS analysis of the volatile at 590 °C indicated an evident appearance of phenol derivatives, in a series of alkane, alkene, cyclohexane, benzene, and naphthalene derivatives. SEM observation indicated that pyro-coke at 590 °C melted while that at 500 °C remained unchanged. Therefore, the abruptly increasing volatile at 590 °C originates mainly from macromolecular phase of coal.
A Facile Stereoselective Synthesis of (E)-1-Aryl-1,2,3,3,3-pentafluoropropenes and (E)-1-Aryl-2-chloro-1,3,3,3-tetrafluoropropenes
Authors: Kuroboshi Manabu , Hiyama Tamejiro 
Published: May 2006

Abstract
Arenecarbaldehydes ArCHO were allowed to react with a carbenoid reagent CF3CX2Mtl (X = Cl, Mtl = ZnCl; X = F, Mtl = Li) to give adducts ArCH(OH)CX2CF3 whose hydroxyl group was substituted by fluorine. Dehydrohalogenation of the resultant ArCHFCX2CF3 (X = Cl or F) with DBU or NaNH2/t-BuOH (cat) gave with excellent selectivity the title (E)-propenes.
Optically Active O-Acyl Cyanohydrins as Chiral Dopants for Ferroelectric Liquid Crystals
Authors: Kusumoto Tetsuo , Hanamoto Takeshi , Hiyama Tamejiro , Takehara Sadao , Shoji Tadao , Osawa Masashi , Kuriyama Takeshi , Nakamura Kayoko , Fujisawa Toru 
Published: May 2006

Abstract
O-Acyl cyanohydrins having a chiral center directly connected to the core aromatic ring were prepared through asymmetric hydrocyanation of 4-substituted benzaldehydes and shown to be excellent chiral dopants for ferroelectric liquid crystals.
The (xy)2(x2−y2) Vacancy Configuration in Co(II)-Formazan
Authors: Kawamura Yoshiko , Yamauchi Jun , Ohya-Nishiguchi Hiroaki 
Published: May 2006

Abstract
ESR spectra of two formazanyl cobalt(II) complexes were observed at room temperature, 77, and 4 K. The parallel components (g//) and the perpendicular components (g⊥) of their g values satisfied a relation g// &gt; g⊥ &gt; 2. These results could be interpreted by a rare three-vacancy configuration of (xy)2(x2−y2) in d-orbitals.
EXAFS Amplitudes of Six-Coordinate Aqua and Ammine 3d Transition Metal Complexes in Solids and in Aqueous Solutions
Authors: Sakane Hideto , Miyanaga Takafumi , Watanabe Iwao , Yokoyama Yu 
Published: May 2006

Abstract
X-Ray absorption spectra of hexaaqua and hexaammine complexes of some 3d transition metals in solids and in aqueous solutions are measured and analyzed. It is found that the peak intensities in the EXAFS Fourier transforms for aqua complexes correlate with those for ammine complexes.
Crucial Effects of Residual Chlorine on the Dependency of the Selectivity of Cyclohexane Conversion on the Ru Dispersion of Ru/Al2O3
Authors: Kyomasu Ayumi , Okuhara Toshio , Misono Makoto 
Published: May 2006

Abstract
The selectivity of cyclohexane conversion over Ru/Al2O3 oppositely depended on the Ru dispersion between Cl-free Ru/Al2O3 and Cl-containing Ru/Al2O3 indicating that the residual Cl and the dispersion are the crucial factors controlling the selectivity.
Mild Acetylation of Amides, Thioamides, Ureas, and Thioureas Using Methyl Bis(1-naphthyl)bismuthinate in Acetic Acid
Authors: Ogawa Takuji , Miyazaki Kikuko , Suzuki Hitomi 
Published: May 2006

Abstract
Amides, thioamides, ureas, and thioureas were N-acetylated in good yield with acetic acid in the presence of methyl bis(1-naphthyl)bismuthinate at room temperature.
Nickel(II) Complex Catalyzed Epoxidation of Olefins with Molecular Oxygen and Primary Alcohol
Authors: Mukaiyama Teruaki , Takai Toshihiro , Yamada Tohru , Rhode Oliver 
Published: May 2006

Abstract
In the presence of a catalytic amount of bis[1,3-di(p-methoxyphenyl)-1,3-propanedionato]nickel(II) (=Ni(dmp)2), various olefins are smoothly monooxygenated into corresponding epoxides in good yields with combined use of molecular oxygen and primary alcohol.
Simple One-Pot Preparation of 1,2-Diacetoxy-2-propene. A Convenient Precursor of 1-Acetoxy-3-chloro-2-propanone
Authors: Sakai Kunikazu , Kondo Kiyosi 
Published: May 2006

Abstract
From a neat mixture of acetic anhydride and propargyl alcohol, 1,2-diacetoxy-2-propene was prepared by successive treatment with an acid catalyst and a Ru catalyst in one-pot procedure. The product was a convenient precursor of 1-acetoxy-3-chloro-2-propanone.
Regioselective Transformation of the Functional Groups of Coenzyme PQQ
Authors: Itoh Shinobu , Inoue Teruhisa , Fukui Yoshifumi , Huang Xin , Komatsu Mitsuo , Ohshiro Yoshiki 
Published: May 2006

Abstract
Regioselective transformation of the carboxyl groups of PQQ was performed by applying the regioselective hydrolysis of the three methyl ester groups of trimethyl 5-methoxy-1H-pyrrolo[2,3-f]quinoline-2,7,9-tricarboxylate (1).
Dehydrogenation of Cyclohexanol to Cyclohexanone Catalyzed by Tin Oxide and the Sulfated Tin Oxide
Authors: Hino Makoto , Arata Kazushi 
Published: May 2006

Abstract
Tin oxide prepared by hydrolysis of tin (II) octylate followed by calcination and the tin oxide sulfated by exposing to 0.5 mol/dm3 H2SO4 followed by calcination in air were highly effective as catalysts for the dehydrogenation of cyclohexanol to cyclohexanone in the presence of water, a selectivity of up to 99% for 90% conversion.
Large Reorganization Energies Associated with Electron-Transfer Reactions of Permethylated Catenates of Group 4B Elements
Authors: Fukuzumi Shunichi , Kitano Toshiaki , Mochida Kunio 
Published: May 2006

Abstract
Large reorganization energies (38 ± 5 kcal mol−1) are found to be required for electron-transfer reactions of permethylated catenates of group 4B elements. With such large reorganization energies the standard oxidation potentials of permethylated catenates of group 4B elements in acetonitrile are about 1 V lower than the corresponding peak potentials observed in the electrochemical oxidation.
Diastereoselective Addition of Organometallics to Chiral α-Keto Amides Having trans-2,5-Disubstituted Pyrrolidine
Authors: Kawanami Yasuhiro , Katayama Koji 
Published: May 2006

Abstract
The nucleophilic addition of organotitanium reagents to α-keto amides derived from (2R,5R)-trans-2,5-bis(t-butyldimethylsiloxymethylsiloxymethyl)pyrrolidine [(R,R)-BTBSP] afforded the corresponding α-hydroxy amides with very high diastereofacial selectivity.