bluuebunny/crossref_metadata_2025_split huggingface dataset:
SYNTHESIS OF DESTOMYCIN C, A PSEUDO-TRISACCHARIDE ANTIBIOTIC HAVING AN INTERGLYCOSIDIC SPIRO-ORTHOESTER LINKAGE
Authors: Yoshimura Juji , Horito Shigeomi , Tamura Jun-ichi , Hashimoto Hironobu 
Published: July 2006

Abstract
Destomycin C, a pseudo-trisaccharide antibiotic of orthosomycin family was synthesized via spiro-orthoester formation between 5-o-(β-d-mannopyranosyl)-2-deoxystreptamine and 6-amino-6-deoxyheptonolactone derivatives.
SOLID-SOLID TRANSITION IN HEXAMETHYLBENZENE THAT DEPENDS ON THERMAL HISTORY
Authors: Yoshimoto Yoshikazu , Fujiwara Takahiro , Atake Tooru , Chihara Hideaki 
Published: July 2006

Abstract
New results about the II-III phase transition in hexamethylbenzene have been obtained, which show large hysteresis. From the adiabatic calorimetry in the cooling direction, combined with those in the heating direction, the true transition point was determined to be 115.5±0.3 K with the entropy of transition, 9.55±0.08 J·K−1·mol−1. Under certain conditions, the anomalous heat capacity curve can be made to consist of two separate peaks. It is a manifestation of “memory effect” of the first-order transition.
A CONVENIENT SYNTHETIC METHOD FOR SCHIFF BASES. THE TRIMETHYLSILYL TRIFLUOROMETHANESULFONATE-CATALYZED REACTION OF N,N-BIS(TRIMETHYLSILYL)AMINES WITH ALDEHYDES AND KETONES
Authors: Morimoto Toshiaki , Sekiya Minoru 
Published: July 2006

Abstract
N,N-Bis (trimethylsilyl)amines react with aldehydes or ketones in the presence of trimethylsilyl trifluoromethanesulfonate to give Schiff bases in high yields. In situ utilization of the reaction solution as the Schiff base is also demonstrated.
CARBOMETALLATION OF 1,4-BIS(TRIMETHYLSILYL)-1,3-BUTADIYNE WITH TRIMETHYLALUMINIUM
Authors: Kusumoto Tetsuo , Nishide Kiyoharu , Hiyama Tamejiro 
Published: July 2006

Abstract
Carbometallation of 1,4-bis(trimethylsilyl)-1,3-butadiyne with Me3Al in the presence of Cp2ZrCl2 catalyst produced selectively an alkenylaluminium intermediate which, upon treatment with water and various electrophiles, afforded 2-methyl-1,4-bis(trimethylsilyl)-1-buten-3-yne and its 1-substituted derivatives.
A BENT CYCLOPOLYSILANE ANION-RADICAL (i-Pr2Si)4
Authors: Wadsworth Cynthia L , West Robert , Nagai Yoichiro , Watanabe Hamao , Matsumoto Hideyuki , Muraoka Tsutomu 
Published: July 2006

Abstract
The ESR spectra for (i-Pr2Si)4\ewdot and (s-Bu2Si)4\ewdot show two equally-intense splitting constants for α-13C, indicating that these anion-radicals are bent and not rapidly interconverting.
SIMULTANEOUSLY OCCURRING HYDROXYLATION, HYDRATION, AND HYDROGENATION OF THE C=C BOND OF ALIPHATIC CARBOXYLIC ACIDS IN AQUEOUS SOLUTION BY GLOW DISCHARGE ELECTROLYSIS
Authors: Kokufuta Etsuo , Shibasaki Takami , Sodeyama Touru , Harada Kaoru 
Published: July 2006

Abstract
Glow discharge electrolyses of maleic and acrylic acids in carbonate-free distilled water simultaneously afford the products into which OH and/or H groups are introduced, indicating the addition reactions of OH and H radicals to the C=C bond.
PHOTOCHROMISM. SYNTHESIS AND PROPERTIES OF INDOLINOSPIROBENZOTHIOPYRANS
Authors: Arakawa Sei’ichi , Kondo Hirofumi , Seto Jun’etsu 
Published: July 2006

Abstract
Novel photochromic compounds, indolinospirobenzothiopyrans, were prepared and their properties in polymer films were examined. The absorption bands of the colored form lie around 100 nm deeper in the long-wave region of the spectrum than are the case with the common spiropyrans.
NICKEL THIOLATES. SIMPLE SYNTHESIS, THE BEHAVIOR UPON PROTOLYSIS AND OXIDATION POTENTIALS
Authors: Yamamura Takeshi , Miyamae Hiroshi , Katayama Yasuyuki , Sasaki Yukiyoshi 
Published: July 2006

Abstract
(NEt4)2[Ni(SPh)4], (NEt4)3[Ni3(SEt)12] and (NEt4)2[Ni2(edt)3] (edt=ethan-1,2-dithiolate dianion), were synthesized by a simple method. These complexes were condensated stepwise by controlled protolysis through their own higher clusters such as [Ni(SEt)2]n(n≠∞) and (NEt4)2[Ni3(edt)4] to the polymers, [Ni(SPh)2]∞,[Ni(SEt)2]∞, and [Ni(edt)]∞.
PALLADIUM-CATALYZED COUPLING OF ALLYLIC ACETATES WITH ZINC
Authors: Sasaoka Shin-ichi , Yamamoto Taku , Kinoshita Hideki , Inomata Katsuhiko , Kotake Hiroshi 
Published: July 2006

Abstract
Allylic acetates were coupled with zinc dust in the presence of a catalytic amount of [Pd(PPh3)4] to give the corresponding 1,5-dienes under mild conditions in high yields. Significant co-solvent effects were found with methanol or 1,2-ethanediol in tetrahydrofuran.
A CONVENIENT SYNTHESIS OF SYMMETRICAL DIARYL TELLURIDES USING TELLURIUM/RONGALITE AS TELLURATION SYSTEM
Authors: Suzuki Hitomi , Inouye Masahiko 
Published: July 2006

Abstract
Sodium telluride, prepared by reducing tellurium with rongalite in dilute aqueous sodium hydroxide, readily reacts with nonactivated aryl iodides to afford symmetrical diaryl tellurides in good yields.
A NEW DITERPENOID FROM LEUCOTHOE GRAYANA MAX.
Authors: Katai Masaaki , Terai Tadamasa , Meguri Haruo 
Published: July 2006

Abstract
A new minor diterpenoid was isolated from the leaves of Leucothoe grayana Max., and its structure was characterized as a secograyanane derivative(1, 3(S), 6(R), 14(R), 16(R)-tetrahydroxy-5-oxo-5,10-seco-ent-kaur-1(10)-ene) by spectroscopic and chemical studies.
EFFECT OF Nb2O5 ADDITION ON THE CATALYTIC ACTIVITY OF FeOx FOR REDUCTION OF NOx WITH NH3 AND O2
Authors: Okazaki Susumu , Kuroha Hiroshi , Okuyama Tetsuhiro 
Published: July 2006

Abstract
Niobium oxide, Nb2O5, remarkably enhanced the catalytic activity of FeOx for the reduction of NOx with NH3 and O2. Thus, for the reduction catalyzed by FeOx containing a small amount of Nb2O5, the conversion attained 90–100% in contrast to less than 40% for the reduction catalyzed by FeO without Nb2O5. The catalytic activity of the mixed oxide was scarcely affected by addition of SO2 to the reaction gas.
VAPOR PHASE CARBONYLATION OF METHYL ACETATE, METHANOL, AND DIMETHYL ETHER WITH MOLYBDENUM-ACTIVE CARBON CATALYST
Authors: Shikada Tsutomu , Yagita Hiroshi , Fujimoto Kaoru , Tominaga Hiro-o 
Published: July 2006

Abstract
A molybdenum-active carbon catalyst was found to catalyze the vapor phase carbonylation of methyl acetate and related compounds under pressurized conditions in the presence of methyl iodide promoter. Acetic anhydride was formed from methyl acetate with an yield of 15% and a selectivity of 83% at 250 °C and 45 atm. The molybdenum-active carbon catalyst was active also for the carbonylation of methanol and dimethyl ether to form methyl acetate.
A STEREOSELECTIVE SYNTHESIS OF METHYL d-GLUCOSAMINATE VIA TIN(II) ENEDIOLATE FORMED FROM FURYLGLYOXAL
Authors: Mukaiyama Teruaki , Tsuzuki Ryuji , Kato Jun-ichi 
Published: July 2006

Abstract
The tin(II) enediolate, formed in situ from furylglyoxal, reacts with polyoxyaldehydes such as 2,3-O-isopropylidene-d-glyceraldehyde and 4-O-benzyl-2,3-O-isopropylidene-l-threose to give the cross aldol adducts in good yields. This reaction is successfully applied to the synthesis of methyl d-glucosaminate.
EFFICIENCY OF TWO-STAGE HYDRODENITROGENATION OF AROMATIC NITROGEN COMPOUNDS
Authors: Mochida Isao , Sakanishi Kinya , Korai Yozo , Fujitsu Hiroshi 
Published: July 2006

Abstract
A high hydrodenitrogenation (86%) of acridine on a Ni–Mo/Al2O3 catalyst was achieved By successive reactions at 370 °C for 2 h and 420 °C for 3 h, respectively, while the single stage reaction at 420 °C for 5 h removed only 67% nitrogen. The effective hydrodenitrogenation is postulated due to the extensive hydrogenation in the first stage and C–N bond fission in the second stage.
THE STEREOSELECTIVE MICHAEL REACTION BETWEEN SILYL ENOL ETHERS AND α,β-UNSATURATED KETONES BY THE USE OF TRITYL PERCHLORATE AS A CATALYST
Authors: Mukaiyama Teruaki , Tamura Masanori , Kobayashi Shu 
Published: July 2006

Abstract
The Michael adducts are obtained with good to excellent ul selectivity by treating silyl enol ethers with α,β-unsaturated ketones in the presence of a catalytic amount of trityl perchlorate.
THE STRUCTURES OF SESQUITERPENE GLYCOSIDES FROM Pittosporum tobira Ait
Authors: Takaoka Daisuke , Kawahara Hiroshi , Ochi Shima , Hiroi Mitsuru , Nozaki Hiroshi , Nakayama Mitsuru , Ishizaki Kazuhiko , Sakata Kanzo , Ina Kazuo 
Published: July 2006

Abstract
The structures of two new sesquiterpene glycosides, pittosporanoside A1, and A2, isolated from the title plant were determined on the basis of chemical and spectral evidence and X-ray crystal structure analysis.
AGGREGATION STRUCTURE OF PORPHYRIN MODEL COMPLEX 4,4′-DIHEXYL-N,N′-DISALICYLIDENE-ETHYLENEDIAMINENICKEL (II) IN CHLOROFORM-d1 SOLUTION STUDIED BY 1H NMR SPECTRA
Authors: Miyamura Kazuo , Gohshi Yohichi 
Published: July 2006

Abstract
1H NMR peak shift due to aggregation was observed in chloroform-d1 solution of porphyrin model complex, 4,4′ -dihexyl-N,N′-disalicylidene-ethylenediaminenickel(II) (1), and a piled structure was proposed for the aggregate of 1 from the sign and the amount of the shifts.
A Simple Synthesis of Adenosine 3′,5′-Cyclic Phosphate Alkyl Triesters
Authors: Kataoka Shigehiro , Isono Junko , Yamaji Nobuyuki , Kato Motohiko 
Published: July 2006

Abstract
A series of alkyl triesters of c-AMP has been prepared from c-AMP tri-n-butylammonium salt by treating with readily available alkyl halides in the presence of tri-n-butylamine in N,N-dimethylacetamide. By this method the axial isomers were obtained predominantly.
SYNTHESIS OF CHIRAL 2-METHYL-3-ALKENOIC ESTERS VIA 1,2-REARRANGEMENT OF ALKENYL GROUP
Authors: Honda Yutaka , Ori Aiichiro , Tsuchihashi Gen-ichi 
Published: July 2006

Abstract
Hydrolysis of optically pure 1-alkenyl-2-sulfonyloxy-1-propanone acetals afforded optically and geometrically pure title compounds via stereospecific 1,2-rearrangement of alkenyl group.
Asymmetric Oxidation of Sulfides to Sulfoxides by Organic Hydroperoxides with Optically Active Schiff Base-Oxovanadium(IV) Catalysts
Authors: Nakajima Kiyohiko , Kojima Masaaki , Fujita Junnosuke 
Published: July 2006

Abstract
The asymmetric oxidation of sulfides into the corresponding sulfoxides was achieved with organic hydroperoxides in the presence of a catalytic amount of optically active Schiff base-oxovanadium(IV) complexes; in most cases the optical yields (e.e.) ranged between 20 and 40%.
A Novel Route to Phenyl-substituted Pyridines by the Reaction of N-(1-Phenylvinyl)iminophosphoranes with α,β-Unsaturated Ketones
Authors: Kobayashi Tomoshige , Nitta Makoto 
Published: July 2006

Abstract
The N-(1-phenylvinyl)iminotriphenylphosphorane or N-(1-phenylvinyl)iminotributylphosphorane reacted with α,β-unsaturated ketones to undergo a novel C–C bond formation followed by aza-Wittig reaction to result in the formation of phenyl-substituted pyridines.
Antioxidant Activity of Vitamin E in Liposomal Membranes
Authors: Niki Etsuo , Takahashi Mareyuki , Komuro Erika 
Published: July 2006

Abstract
Antioxidant activity of vitamin E in liposomal membranes was compared with that in homogeneous solution. It was found that vitamin E could move in the liposomal membranes rapidly but that the antioxidant efficiency in the membranes was considerably lower than that in homogeneous solution.
Reduction of Ketene Dithioacetal S,S-Dioxides with Sodium Borohydride and Its Application to a Convenient Synthesis of Alkyl Arylmethyl Ketones
Authors: Ogura Katsuyuki , Ohtsuki Kazuo , Takahashi Kazumasa , Iida Hirotada 
Published: July 2006

Abstract
The C–C double bond of a ketene dithioacetal S,S-dioxide was found to undergo reduction with sodium borohydride. This fact provides an efficient synthetic route from an aromatic aldehyde to an alkyl arylmethyl ketone using methylthiomethyl p-tolyl sulfone.
Regioselective Alkylation of 1,3-Dioxolan-2-ylium Cation Derived from α,β-Unsaturated Aldehyde Ethylene Acetal with Lithium Organo Compounds
Authors: Mukaiyama Teruaki , Hayashi Yujiro , Hashimoto Yukihiko 
Published: July 2006

Abstract
1,3-Dioxolan-2-ylium cations derived from α,β-unsaturated aldehyde ethylene acetals regioselectively react with lithium organocuprate and lithium organoaluminate to give the corresponding esters and ketals, respectively.
The Double Michael Reaction of α,β-Unsaturated Ketones with Siloxydienes Catalyzed by Trityl Perchlorate Forming Six-Membered Ring Systems
Authors: Mukaiyama Teruaki , Sagawa Yukihiro , Kobayashi Shu 
Published: July 2006

Abstract
In the presence of a catalytic amount of trityl perchlorate, the double Michael reaction of α,β-unsaturated ketones with siloxydienes smoothly proceeds to afford six-membered ring systems stereoselectively in good yields. Decalin derivatives are also obtained according to this procedure.
New Efficient Palladium-Catalyzed Perfluoroalkylation of Carbon-Carbon Multiple Bonds with F-Alkyl Iodides. An Expedient Route to F-Alkylated Alkyl and Alkenyl Iodides
Authors: Ishihara Takashi , Kuroboshi Manabu , Okada Yoshiji 
Published: July 2006

Abstract
A variety of alkenes and alkynes efficiently undergo the perfluoroalkylation with F-alkyl iodides in the presence of a catalytic amount of tetrakis(triphenylphosphine)palladium(0) in hexane to give good yields of the corresponding F-alkylated alkyl and alkenyl iodides, respectively.
Total Synthesis of Cycloaraneosene, a Fundamental Hydrocarbon of “epi”-Fusicoccane Diterpenoids, and the Structure Revision of Its Congener, Hydroxycycloaraneosene
Authors: Kato Nobuo , Tanaka Shinya , Takeshita Hitoshi 
Published: July 2006

Abstract
The 5-8-5-membered tricyclic diterpene, cycloaraneosene, has been totally synthesized via the stereoselective condensation of two units of optically active iridoids, Cope rearrangement and chemical reduction of the tetrasubstituted C=C bond. The NMR spectrum of synthetic 9α-hydroxycycloaraneosene was not identical with the congener product, and the natural alcohol is likely to be 8β-hydroxyl derivative.
Anion Arrangement in a New Molecular Superconductor, θ-(BEDT-TTF)2(I3)1−x(AuI2)x,(x&lt;0.02)
Authors: Kobayashi Akiko , Kato Reizo , Kobayashi Hayao , Moriyama Shinji , Nishio Yutaka , Kajita Koji , Sasaki Wataru 
Published: July 2006

Abstract
Three-dimensional arrangement of the anions in the recently found molecular superconductor θ-(BEDT-TTF)2(I3)1−x(AuI2)x,(x&lt;0.02) was determined by the use of weak reflections which were omitted in the previous analysis of the “average structure”.
Electron-Impact-Induced Phosphorescence of Benzophenone at Low Vapor Pressures
Authors: Inoue Akinori 
Published: July 2006

Abstract
Phosphorescences of benzophenone were measured at pressures between 0.4 and 2.2 Pa under electron impact. Emissions from vibrationally excited T1 molecules were observed at lower pressures. Excitation mechanism by electron impact was discussed on the basis of excitation energy dependence.
Preparation and in Situ Reflection Spectra of Bilayer Electrodes with Polythiophene Outer Layers
Authors: Murao Kenji , Suzuki Kazuhiro 
Published: July 2006

Abstract
Bilayer electrodes derived from 3-methylthiophene and bithiophene, Pt/poly[tris(4-vinyl-4′-methyl-2,2′-bipyridine)ruthenium(II) perchlorate]/polythiophene, have been prepared. Their in situ reflection spectra upon electrochemical potential sweeps suggest the transient occurrence of polarons in the doped polythiophenes.
Synthesis of (−)-8a-epi-Swainsonine, (1S,2R, 8R, 8aS) -Octahydro-1,2,8-indolizinetriol
Authors: Tadano Kin-ichi , Hotta Yukinori , Morita Masahiro , Suami Tetsuo , Winchester Bryan , Bello Isabelle Cenci di 
Published: July 2006

Abstract
The title compound, one of the stereoisomers of physiologically interesting indolizidine alkaloid swainsonine, has been synthesized from the known methyl 3-azido-4,6-O-benzylidene-3-deoxy-α-d-altropyranoside.
ENZYME MEDIATED SYNTHESIS OF OPTICALLY ACTIVE ω-ARENESULFINYLALKANOIC ESTERS
Authors: Ohta Hiromichi , Kato Yasuo , Tsuchihashi Gen-ichi 
Published: July 2006

Abstract
Incubation of methyl arenesulfinylacetates and methyl α-benzenesulphinylpropionate with Corynebacterium equi IFO 3730 afforded the corresponding chiral sulfoxides of high optical purities in moderate to good chemical yields.
SYNTHESIS AND UNAMBIGUOUS ASSIGNMENT OF STRUCTURE TO PYRANO[4,3-c]PYRAZOL-4(1H)-ONES AND -4(2H)-ONES
Authors: Cantos Albert , March Pere De , Moreno-Mañas Marcial , Pla Anna , Sanchez-Ferrando Francisco , Virgili Albert 
Published: July 2006

Abstract
A clean synthesis of pyranopyrazolones is described. The reactions of 4-chloro-3-(1-chlorovinyl)-6-methyl-2-pyrone with arylhydrazines give pyrano[4,3-c]pyrazol-4(2H)-ones as the only identified products. However, the isomeric pyrano [4,3-c]pyrazol-4(1H)-ones have been isolated when alkylhydrazines were used. Unambiguous assignment of structure could be achieved by homonuclear 1H{1H} NOE determinations.
SYNTHESIS OF 2-[[3-HYDROXY-5-[3-(4-HYDROXYPHENYL)-1-OXO-2-PROPENYL]-3-METHYL-2,4,6-TRIOXOCYCLOHEX-1-YL]METHYLENE]-4-HYDROXY-6-[3-(4-HYDROXYPHENYL)-1-OXO-2-PROPENYL]-4-METHYL-1,3,5-TRIOXOCYCLOHEXANE, AN ANALOG OF CARTHAMIN
Authors: Obara Heitaro , Namai Sozo , Machida Yoshihisa 
Published: July 2006

Abstract
The synthesis of 2-[[3-hydroxy-5-[3-(4-hydroxyphenyl)-1-oxo-2-propenyl]-3-methyl-2,4,6-trioxocyclohex-1-yl]methylene]-4-hydroxy-6-[3-(4-hydroxyphenyl)-1-oxo-2-propenyl]-4-methyl-1,3,5-trioxocyclohexane, an analog of carthamin, was investigated.
INVESTIGATION ON A LEAN-BURN OXYGEN SENSOR USING PEROVSKITE-TYPE OXIDES
Authors: Yu Chunying , Shimizu Yasuhiro , Arai Hiromichi 
Published: July 2006

Abstract
The oxygen sensitivity of SrTiO3 doped with MgO has been investigated in the exhaust gas of propane-oxygen combustion as a function of the MgO content. Among the specimens studied, SrTi0.6Mg0.4O3−δ. appeared to be a suitable material for a lean-burn oxygen sensor, because it exhibited a high oxygen sensing performance in the lean-burn region and an excellent stability in the rich-burn region.
MOLECULAR ORBITAL (MO) THEORY FOR MAGNETICALLY INTERACTING ORGANIC COMPOUNDS. AB-INITIO MO CALCULATIONS OF THE EFFECTIVE EXCHANGE INTEGRALS FOR CYCLOPHANE-TYPE CARBENE DIMERS
Authors: Yamaguchi Kizashi , Fukui Hiroaki , Fueno Takayuki 
Published: July 2006

Abstract
A generalized molecular orbital (GMO) theory for magnetically interacting organic compounds has been presented. The theory is applied to the calculations of the effective exchange integrals (Jab) for the cyclophane-type carbene dimers whose para and ortho-isomers have the high-spin ground state. The calculated Jab-values are consistent with observations.
STRUCTURES OF NAEMATOLIN AND NAEMATOLIN B, 1S,9S-RING-FUSED CARYOPHYLLANE SESQUITERPENOIDS
Authors: Doi Kozo , Shibata Takao , Nara Masataka , Tsuboyama Sei , Sakurai Tosio , Tsuboyama Kaoru 
Published: July 2006

Abstract
It is well known that naturally occurring caryophyllane sesquiterpenoids possess in general 1R,9S(trans)-ring juncture. However, it has been clarified that both of naematolin and naematolin B, microbial products, have 1S,9S(cis)-ring juncture in the caryophyllane skeleton.
A NEW MOLECULAR SUPERCONDUCTOR, (BEDT-TTF)2(I3)1−x(AuI2)x(x&lt;0.02)
Authors: Kobayashi Hayao , Kato Reizo , Kobayashi Akiko , Nishio Yutaka , Kajita Koji , Sasaki Wataru 
Published: July 2006

Abstract
A new molecular superconductor based on BEDT-TTF molecule was prepared electrochemically by using the mixed supporting electrolyte, (n-C4H9)4NI3 and (n-C4H8)4NAuI2. The superconducting transition takes place at ambient pressure at 3.6 K. X-Ray diffraction patterns show that the system can be approximately assigned to a pseudo orthorhombic one with the lattice constants of a=10.076(2), b=33.853(5), c=4.964(1) Å.
PALLADIUM-PROMOTED AROMATIC ANNELATION WITH ACETYLENE DICARBOXYLATES
Authors: Sakakibara Tsutomu , Tanaka Yasuo , Yamasaki Shin-ichi 
Published: July 2006

Abstract
Benzene rings of N-alkyltoluidine and benzene (or iodobenzene) in acetic acid were annelated with acetylenedicarboxylates by palladium(II) acetate to give N-alkylindole-2,3-dicarboxylate and naphthalene-1,2,3,4-tetracarboxylate. The formation of the products are explained in terms of toluidine radical cation intermediates.
PREPARATION OF MONO- AND MULTILAYER FILMS OF AROMATIC POLYIMIDES USING LANGMUIR–BLODGETT TECHNIQUE
Authors: Kakimoto Masa-aki , Suzuki Masa-aki , Konishi Toru , Imai Yoshio , Iwamoto Mitsumasa , Hino Taro 
Published: July 2006

Abstract
Monolayer film of polyamic acid alkylamine salt at air–water interface was successfully deposited onto appropriate plates. Subsequent treatment of the multilayer film with a mixture of acetic anhydride and pyridine afforded the multilayer film of polyimide. The distance between two layers of the polyimide multilayer film was estimated to be 4 Å.
HETERO HEAD-TO-HEAD DIMER BY TOPOCHEMICAL PHOTOREACTION OF METHYL α-CYANO-4-[2-(2-PYRIDYL)ETHENYL]CINNAMATE
Authors: Kato Satoshi , Nakatani Mitsunobu , Harashina Hatsuhiko , Saigo Kazuhiko , Hasegawa Masaki , Sato Sadao 
Published: July 2006

Abstract
Methyl α-cyano-4-[2-(2-pyridyl)ethenyl]cinnamate crytstal shows a high photoreactivity to form the dimer of single structure quantitatively. This result is a unique example in such point that the topochemical photoreaction of β-form diolefin crystals gives neither of the polymer nor the cyclic dimer, but the photostable diolefinic dimer.
DESULFONYLATION OF β-KETO SULFONES WITH THE HANTZSCH ESTER, AN NAD(P)H MODEL
Authors: Nakamura Kaoru , Fujii Masayuki , Mekata Hideyuki , Oka Shinzaburo , Ohno Atsuyoshi 
Published: July 2006

Abstract
Carbon–sulfur bonds in β-keto sulfones were reduced smoothly to carbon–hydrogen bonds with the Hantzsch ester, a model of NAD(P)H.
CYCLOADDITION OF STABLE DISILENES TO TERMINAL ACETYLENES
Authors: Young Douglas J De , West Robert 
Published: July 2006

Abstract
Tetramesityldisilene and trans-1,2-di-t-butyl-1,2-dimesityldisilene (3) react with various 1-alkynes to give air-stable disilacyclobutenes. The cycloaddition of 3 to alkynes produces equal amounts of both stereoisomers, consistent with a stepwise mechanism.
Photocatalytic Activities of Layered Titanium Compounds and Their Derivatives for H2 Evolution from Aqueous Methanol Solution
Authors: Shibata Mutsumi , Kudo Akihiko , Tanaka Akira , Domen Kazunari , Maruya Ken-ichi , Onishi Takaharu 
Published: July 2006

Abstract
The photocatalyst prepared from H+-exchanged K2Ti2O5 with a layered structure exhibited a high activity (quantum yield = ca. 10%) for H2 evolution from aqueous methanol solution without any assistance of other materials such as Pt.
A Novel Synthesis of Phenylthiomethyl(PTM) Ethers and Esters by Anodic Oxidation of Phenyl Trimethylsilylmethyl Sulfide
Authors: Koizumi Toshio , Fuchigami Toshio , Nonaka Tsutomu 
Published: July 2006

Abstract
It was found that anodic oxidation of phenyl trimethylsilylmethyl sulfide in the presence of alcohols and carboxylic acids afforded various kinds of PTM ethers and esters, respectively, in good to reasonable yields.
Asymmetric Carbon Dioxide Fixation into Optically Active Propylene Carbonate by the Reactions of Propylene Bromohydrins
Authors: Takeichi Tsutomu , Ozaki Yoshiyuki , Takayama Yuzi 
Published: July 2006

Abstract
Asymmetric carbon dioxide fixation was achievd by the cyclization of propylene bromohydrins into chiral propylene carbonate of 38% enantiomeric excess in the presence of a chiral cobalt salen type complex.
An Efficient O-Monoalkylation of Dimethyl l-Tartrate via O-Stannylene Acetal with Alkyl Halides in the Presence of Cesium Fluoride
Authors: Nagashima Nobuo , Ohno Masaji 
Published: July 2006

Abstract
Selective O-monoalkylation of the vic-glycol of dimethyl l-tartrate with alkyl halides has been found to take place smoothly under mild conditions in the presence of cesium fluoride.
Dealumination of ZSM-5 Zeolites with Water
Authors: Sano Tsuneji , Suzuki Kunio , Shoji Hiroshi , Ikai Shigeru , Okabe Kiyomi , Murakami Tohru , Shin Shigemitsu , Hagiwara Hiroyuki , Takaya Haruo 
Published: July 2006

Abstract
Dealumination of a framework of H-ZSM-5 zeolites with water was investigated by 27Al MASNMR. It was found that the rate of dealumination is apparently second-order dependent on the concentration of framework aluminium.