bluuebunny/crossref_metadata_2025_split huggingface dataset:
ATTEMPTED ISOLATION OF MONOMERIC IMINOPHOSPHINES. FORMATION OF A STERICALLY PROTECTED IMINOPHOSPHINE P-SULFIDE AND DETECTION OF IMINOPHOSPHINES
Authors: Yoshifuji Masaaki , Shibayama Katsuhiro , Toyota Kozo , Inamoto Naoki , Nagase Shigeru 
Published: July 2006

Abstract
A monomeric iminophosphine was observed by the desulfurization of the corresponding p-sulfide; the structure of the sulfide was discussed in terms of ab initio calculation; several attempts to isolate sterically protected iminophosphines were described.
BASICITY OF ROTAMERIC 9-(2-DIMETHYLAMINOMETHYL-6-METHYLPHENYL)FLUORENE
Authors: Nakamura Mikio , Oki Michinori 
Published: July 2006

Abstract
The pKa′ values of the conjugate acids of the title compound were determined as 5.85 and 6.45, respectively, for the sp and ap isomers by potentiometric titration in THF-water solutions. The difference was ascribed to the existence of N–H···π interactions in the ap rotamer on the basis of the equilibrium constants between and barriers to rotation in rotamers of the conjugate acids and the free bases.
EOSIN Y SENSITIZED REDUCTION OF QUINONES TO THEIR PERSISTENT RADICAL ANIONS
Authors: Misawa Hiroaki , Wakisaka Akihiro , Sakuragi Hirochika , Tokumaru Katsumi 
Published: July 2006

Abstract
Eosin Y sensitized efficiently the reduction of duroquinone and anthraquinone-2-sulfonate to their persistent radical anions in aqueous 2-propanol in the presence of triethanolamine.
GLUCOSYLATION USING GLUCOPYRANOSYL DIMETHYLPHOSPHINOTHIOATE
Authors: Inazu Toshiyuki , Hosokawa Hideaki , Satoh Yuzuru 
Published: July 2006

Abstract
Several glucosides were prepared in good yields from 2,3,4,6-tetra-o -benzyl-α-d-glucopyranosyl dimethylphosphinothioate and alcohols in the presence of silver perchlorate. By this method α-glucosides were predominantly obtained.
AN APPLICATION OF 1H NMR TO THE DETERMINATION OF THE STOICHIOMETRY OF CROWN ETHER COMPLEXES (MLn (n=1,2): M=Li, Na, K, Rb, Cs, Ca, Sr, AND Ba; L=12-CROWN-4, 15-CROWN-5, AND 18-CROWN-6)
Authors: Iwachido Tadashi , Shibuya Koichi , Tôei Kyoj 
Published: July 2006

Abstract
Alkali and alkaline earth metal salts with 2,2′,4,4′,6,6′-hexanitrodiphenylamine were titrated stepwise with the crown ethers in nitrobenzene-d5 in the presence of a small quantity of water. The 1H NMR spectra obtained for each step showed that the water and the ligand signals shift on complexation. The stoichiometries of the crown ether complexes were obtained through analysis of the shift. The water signal was found to be advantageous to the stoichiometry determination for its high sensitivity.
FORMATION OF 10b,10c-DIHYDRO-10b,10c-DIMETHYLPYRENES IN REACTION OF 8,16-DIMETHYL[2.2]METACYCLOPHAN-1-ENES WITH PROTONIC ACIDS
Authors: Tashiro Masashi , Kobayashi Kazumasa , Yamato Takehiko 
Published: July 2006

Abstract
Reaction of 8,16-dimethyl[2.2]metacyclophan-1-enes with protonic acids such as 57% hydroiodic acid and trifluoroacetic acid afforded the corresponding 10b,10c-dihydro-10b,10c-dimethylpyrenes. Similar reaction with 47% hydrobromic acid and 36% hydrochloric acid gave surprisingly halogenated 10b,10c-dihydro-10b,10c-dimethylpyrenes.
A NEW PHOSPHORYLATING AGENT, 2,6-DICHLOROPHENYL 5-CHLORO-8-QUINOLYL PHOSPHOROCHLORIDATE. ITS APPLICATION IN DEOXYRIBOOLIGO-NUCLEOTIDE SYNTHESIS BY THE PHOSPHOTRIESTER APPROACH
Authors: Tsuchiya Hiromichi , Ueda Souichi , Kobayashi Hitoshi , Takaku Hiroshi 
Published: July 2006

Abstract
The mononucleotide units (4) was prepared by the action of 2,6-dichlorophenyl 5-chloro-8-quinolyl phosphorochloridate on nucleosides. 2,6-Dichlorophenyl group in the mononucleotide units (4) have been employed as a protecting group for 3′-terminal phosphodiester functions; it is stable under standard operations required for the deoxyribooligonucleotide synthesis and readily removed by the action of t-BuNH2 in pyridine-H2O within 90 min at room temperature.
SYNTHESIS OF METHYL (−)-SHIKIMATE FROM d-LYXOSE
Authors: Suami Tetsuo , Tadano Kin-ichi , Ueno Yoshihide , Iimura Youichi 
Published: July 2006

Abstract
Natural methyl (−)-shikimate has been synthesized from d-lyxose, employing a double carbon–carbon bond formation of 2,3,4-tri-O-benzyl-5-O-mesyl-d-lyxose with a dianion of dimethyl malonate as a key reaction.
FIRM EVIDNCE FOR CIS-AMINOPALLADATION IN THE REACTION OF 1-AMINOHEXATRIENES WITH PALLADIUM DICHLORIDE
Authors: Isomura Kazuaki , Okada Noriyuki , Saruwatari Masumi , Yamasaki Hirotaka , Taniguchi Hiroshi 
Published: July 2006

Abstract
The reaction of PdCl2(PhCN)2 with ethyl α-N-acetyl-β-(4,6-dimethylbenzofuran-2-yl)acrylate, having a Z-propenyl group at 2-position of benzofuran ring, gave an azepine derivative, whereas its E-isomer afforded a Pd-σ-complex having azepine skeleton. Configurational assignment of the σ-complex, accomplished by methoxycarbonylation, clearly demonstrates that this intramolecular aminopalladation proceeds via cis-aminopalladation.
DEPTH RESOLVED THERMAL WAVE IMAGING OF LAYER-STRUCTURED SAMPLE BY CORRELATION PHOTOACOUSTICS
Authors: Sugitani Yoshinori , Uejima Akinori 
Published: July 2006

Abstract
A new photoacoustic method, correlation photoacoustic imaging, has been developed combining two independently developed techniques, thermal wave imaging and correlation photoacoustic spectroscopy. This method can be used for surface and/or depth analysis of solid samples and was demonstrated on a layer-structured model sample.
THE ELECTROCHEMICAL REDUCTION OF CO2 CATALYZED BY RUTHENIUM CARBONYL COMPLEXES
Authors: Ishida Hitoshi , Tanaka Koji , Tanaka Toshio 
Published: July 2006

Abstract
The catalytic reduction of CO2 has been succesfully performed under the controlled potential electrolysis of [Ru (bpy)2 (CO)2](PF6)2 (bpy=2,2′-bipyridine) in a CO2-saturated H2O/DMF solution. Formic acid and CO as well as H2 are formed in alkaline conditions, while only CO and H2 are evolved in acidic conditions.
ACYCLIC STEREOSELECTION USING RELATIVE 1,2-ASYMMETRIC INDUCTION. SELECTIVE SYNTHESIS OF (+)-BLASTMYCINONE
Authors: Uchiyama Hiroshi , Kobayashi Yuichi , Sato Fumie 
Published: July 2006

Abstract
(+)-Blastmycinone has been synthesized based on the stereoselective addition reaction of 1-trimethylsilylvinylmagnesium bromide with (−)-(R)-2-butyl-3-trimethylsilylbut-3-enal.
STEREOSELECTIVE SYNTHESIS OF NATURAL (4S,6S,7S)-SERRICORNIN STARTING WITH (3S,4S)-4-HYDROXY-3-METHYL-1-HEXENE
Authors: Takeda Yoshiyuki , Kobayashi Yuichi , Sato Fumie 
Published: July 2006

Abstract
(4S,6S,7S)-Serricornin has been synthesized in three steps starting with (3S,4S)-4-hydroxy-3-methyl-1-hexene.
A FACILE PREPARATION OF ECDYSONE SIDE CHAIN BY UTILIZING FURAN DERIVATIVE
Authors: Kametani Tetsuji , Katoh Tadashi , Tsubuki Masayoshi , Honda Toshio 
Published: July 2006

Abstract
Construction of the ecdysone side chain starting from pregnenolone was achieved via a furan derivative. Reduction of the olefinic-furan over palladium–carbon afforded the hydrogenated furan derivative with the desired stereochemistry at C-20, exclusively, whose subsequent reduction over rhodium–alumina, followed by ruthenium tetroxide oxidation, gave the lactones in a ratio of ca. 1:1. Grignard reaction of both lactones with methylmagnesium bromide led to the synthesis of the triols having ecdysone-type side chains, respectively.
FLUORESCENCE QUENCHING IN HOST–GUEST COMPLEXES OF MODIFIED γ-CYCLODEXTRIN
Authors: Ueno Akihiko , Moriwaki Fumio , Tomita Yoko , Osa Tetsuo 
Published: July 2006

Abstract
Fluorescence quenching by guest ketones occurs in the complexes of γ-cyclodextrin appended by a naphthyl moiety, demonstrating the multifunctional behavior of the appended moiety that the moiety acts as both spacer and antenna of photoenergy.
OXYGENATION OF 4-ALKYNYL-2,6-DI-t-BUTYLPHENOLS
Authors: Nishinaga Akira , Iwasaki Hitoshi , Kondo Toshiyuki , Matsuura Teruo 
Published: July 2006

Abstract
The oxygenation of 4-alkynyl-2,6-di-t-butylphenols (1) promoted by Co(Salpr) resulted in the dioxygen incorporation predominantly into the side chain, whereas in the oxygenation of 1 with t-BuOK in t-BuOH dioxygen was incorporated exclusively into the ortho position. The results are rationalized by a radical process in the former reaction and a nonradical process in the latter oxygenation.
PROTONIC CONDUCTIVITY OF ALKALINE-EARTH METAL 12-TUNGSTOPHOSPHATES IN RELATION TO THEIR CATALYTIC ACTIVITY AS SOLID ACIDS
Authors: Akimoto Masamichi , Okamoto Masahide , Niiyama Hiroo 
Published: July 2006

Abstract
The protonic conductivity of alkaline-earth metal 12-tungstophosphates at solid state correlated their catalytic activity as solid acids for vapor-phase dehydration of ethanol.
PREPARATIONS OF TiO2-ATTACHED Rh CATALYSTS AND THEIR CATALYSIS
Authors: Iwasawa Yasuhiro , Sato Hiroko 
Published: July 2006

Abstract
New TiO2-attached Rh catalysts with the surface structures, (Remark: Graphics omitted.) Rh-C3H5(νC-H=3050 cm−1, νC-C=1462 cm−1), (Remark: Graphics omitted.) Rh-H(νRH=2048 cm−1) and (Remark: Graphics omitted.) [Rh]n(\barDn=1.4 nm, Rh-Rh=0.262 nm), were prepared by the reaction between Rh(η3-C3H5)3 and surface OH groups of TiO2, followed by chemical treatments with H2 . These catalysts showed higher activities for ethane hydrogenolysis and ethene hydrogena-tion than a conventional impregnation Rh catalyst.
THE CINNAMYLOXYCARBONYL GROUP AS A NEW AMINO-PROTECTING GROUP
Authors: Kinoshita Hideki , Inomata Katsuhiko , Kameda Takuo , Kotake Hiroshi 
Published: July 2006

Abstract
A new urethane-type protecting group for amines, cinnamyloxycarbonyl (Coc) group, is described. The cleavage of the Coc group is effectively catalyzed by 5 mol% of [Pd(PPh3)4] in the presence of formic acid, pyridine, and N-hydroxysuccinimide in refluxing THF. The Z- and Boc-protecting groups are not affected under the same reaction conditions.
FACILE SYNTHESIS OF FOUR ISOMERS OF LINEAR TENTOXIN SEQUENCE BY USING N-CARBOXY DEHYDROPHENYLALANINE ANHYDRIDE
Authors: Shin Chung-gi , Yonezawa Yasuchika 
Published: July 2006

Abstract
Four isomers of protected dehydrotetrapeptides of linear tentoxin sequence, consisted of Gly, Ala, Leu, and ΔPhe residues, were readily synthesized by using N-carboxy dehydrophenylalanine anhydride.
NEW FLAVIN SEMIQUINONE RADICALS AS PRODUCED BY THE REACTION WITH NADH MODEL COMPOUNDS
Authors: Shinkai Seiji , Honda Noriaki , Ishikawa Yuichi , Müller Franz , Manabe Osamu 
Published: July 2006

Abstract
The oxidation activity of a flavin (PyFl) with a fused pyridine moiety as a metal-chelation site was enhanced in the presence of certain metal ions. The reaction of PyFl and 1-benzyl-1,4-dihydronicotinamide in the presence of Mg(II), Zn(II), and Cd(II) in acetonitrile gave a transient absorption band at around 500 nm and an ESR spectrum attributable to the semiquinone radical. This is the first example for the flavin semiquinone radical produced by the reaction with an NADH model compound.
PREPARATION OF TRIS(3-SUBSTITUTED ACETYLACETONATO)RUTHENIUM(III) COMPLEXES AND THEIR ELECTROCHEMICAL BEHAVIOR IN ACETONITRILE
Authors: Endo Akira , Shimizu Kunio , Satô Gen P 
Published: July 2006

Abstract
Four tris(3-substituted acetylacetonato)ruthenium(III) complexes were newly synthesized and their electrochemical oxidation and reduction were investigated in acetonitrile. The oxidation and reduction potentials of [RuIII(R′-CO-CR-CO-R″)-] can be expressed as a linear function of the sum of the Hammett constants, if one uses the para-position value for R and the meta-position values for R′ and R″.
SYNTHESIS OF α-AMINO KETONES FROM α,β-EPOXY SULFOXIDES
Authors: Satoh Tsuyoshi , Kaneko Youhei , Sakata Kiichi , Yamakawa Koji 
Published: July 2006

Abstract
Various kinds of α-amino ketones and α-arylamino ketones are synthesized in good yields by aminolysis of α,β-epoxy sulfoxides which are easily prepared from alkylated chloromethyl phenyl sulfoxide and carbonyl compounds.
ALCOHOL SYNTHESIS FROM CO2/H2 ON SILICA-SUPPORTED MOLYBDENUM CATALYSTS
Authors: Tatsumi Takashi , Muramats Atsushi , Tominaga Hiro-o 
Published: July 2006

Abstract
In the hydrogenation of CO2 over alkali-promoted Mo/SiO2 catalysts, C1–C5 alcohols were selectively obtained at 16 kg/cm2 and 250 °C.
PHOTOCHEMICAL REACTION OF 2-ALKENOYL-1,4-QUINONES. FORMATION OF CHROMONE DERIVATIVES
Authors: Maruyama Kazuhiro , Iwamoto Hidetoshi , Soga Osamu , Takuwa Akio , Osuka Atsuhiro 
Published: July 2006

Abstract
Irradiation of 5-methyl-2-(α-methylalkenoyl)-1,4-benzoquinones in alcohol under anaerobic conditions gave the two isomers of chromone derivatives being isomerization products of the quinones. Besides them other two adducts were produced. The mechanism of formation of these products is discussed.
MANGANESE-MEDIATED ALLYL ADDITION TO ENOLIZABLE ALDEHYDE AND KETONES. AN APPROACH FOR INTRODUCTION OF ACETONYL SIDE CHAIN AT C(9) OF ANTHRACYCLINE ANTIBIOTICS
Authors: Hiyama Tamejiro , Sawahara Miwa , Kusano Yukari 
Published: July 2006

Abstract
Allyl addition to enolizable aldehyde and ketones is achieved efficiently with manganese reagents generated by the reaction of allyl bromide with MnCl2–LiAlH4 or Mn powder. The Wacker oxidation of the β-tetralone adducts gives an acetonyl moiety typical to an anti-tumor antibiotic, feudomycin.
ACID CATALYZED REDUCTION OF NITROSOBENZENE IN WATER BY 1-BENZYL-3,5-DIPYRROLIDINOCARBAMOYL-1,4-DIHYDROPYRIDINE AS A NADH ANALOG
Authors: Awano Hiroshi , Tagaki Waichiro 
Published: July 2006

Abstract
Acid catalysis has been observed for the reduction of substituted nitrosobenzenes in water by an acid stable NADH analog, 1-benzyl-3,5-dipyrrolidinocarbamoyl-1,4-dihydropyridine.
CARBON-SULFUR BOND CLEAVAGE BY BENZYNE GENERATED FROM 2-CARBOXYBENZENEDIAZONIUM CHLORIDE
Authors: Nakayama Juzo , Hoshino Keiichi , Hoshino Masamatsu 
Published: July 2006

Abstract
The reaction of cyclic sulfides with benzyne generated from 2-carboxybenzenediazonium chloride affords ω-chloroalkyl phenyl sulfides in good yields. A similar type of reaction was also observed with acyclic sulfides.
PREPARATION OF 7,7,8,8-TETRACYANOQUINODIMETHANE AND ITS DERIVATIVES
Authors: Yamaguchi Shunro , Hanafusa Terukiyo 
Published: July 2006

Abstract
The reaction of terephthaloyl chloride with cyanotrimethylsilane in the presence of pyridine gave 1,4-bis(dicyanotrimethylsiloxymethyl)benzene, which was treated with POCl3-pyridine to afford tetracyanoquinodimethane (TCNQ) along with its dichloride. Similarly, 2,5-dimethyl-TCNQ and 2-bromo-TCNQ were prepared from the corresponding terephthaloyl chlorides.
14N NUCLEAR QUADRUPOLE SPLITTINGS OF PHOSPHATIDYLCHOLINE IN BILAYERS. THE INFLUENCE OF NEGATIVE CHARGE IN THE HEAD GROUPS
Authors: Kanazawa Yoko , Takano Ritsuko , Nishizono Isao , Koga Keiko , Ishikawa Makoto , Higuchi Wakako , Yamada Toru 
Published: July 2006

Abstract
The 14N nuclear quadrupole splitting of phosphatidylcholine was measured in the presence of acidic lipids in multibilayers. The splitting was found to increase with negative charge in mixed lipid systems.
SYNTHESIS OF SWEET TASTING PSEUDO-β-FRUCTOPYRANOSE
Authors: Suami Tetsuo , Ogawa Seiichiro , Takata Makoto , Yasuda Kuninobu , Suga Atsuo , Takei Kiyoshi , Uematsu Yasushi 
Published: July 2006

Abstract
Pseudo-β-Dl-fructopyranose has been synthesized from Dl-1,2-di-O-acetyl-(1,3/2)-3-bromomethyl-5-cyclohexene-1,2-diol by two reaction routes. The pseudosugar was found to be sweet and this fact provides a strong support for Shallenberger’s sweetness-structure hypothesis.
INTERMEDIACY OF CHARGED SPECIES IN PHOTODECOMPOSITION OF DIAROYL PEROXIDES SENSITIZED WITH AROMATIC HYDROCARBONS IN POLAR SOLVENTS
Authors: Urano Toshiyuki , Sakuragi Hirochika , Tokumaru Katsumi 
Published: July 2006

Abstract
Electron transfer upon photosensitization of dibenzoyl and bis (2-thiophenecarbonyl) peroxides with singlet sensitizers in acetonitrile was revealed by trapping of sensitizer (naphthalene) cation radicals with acetic acid and by their direct detection (pyrene cation radicals) by means of laser flash photolysis.
ECKOLS, NOVEL PHLOROTANNINS WITH A DIBENZO-p-DIOXIN SKELETON POSSESSING INHIBITORY EFFECTS ON α2-MACROGLOBULIN FROM THE BROWN ALGA ECKLONIA KUROME OKAMURA
Authors: Fukuyama Yoshiyasu , Miura Iwao , Kinzyo Ziunei , Mori Hideo , Kido Masaru , Nakayama Yasuo , Takahashi Masayuki , Ochi Masamitsu 
Published: July 2006

Abstract
Eckol, 2-phloroeckol and dieckol, novel phlorotannins with a dibenzo-p-dioxin skeleton have been isolated from the brown alga Ecklonia kurome Okamura as plasma α2-macroglobulin inhibitors and their structures have been determined on the basis of spectral data, in particular, by means of negative NOEs.
DRASTIC EFFECT OF CROWN-COMPLEXING CATION IN REVERSED-PHASE LIQUID CHROMATOGRAPHY USING POLY(CROWN ETHER)-IMMOBILIZED SILICA
Authors: Kimura Keiichi , Harino Hiroya , Nakajima Masaki , Shono Toshiyuki 
Published: July 2006

Abstract
A poly(crown ether)-immobilized silica behaves as a stationary phase for reversed-phase liquid chromatography as well as ion chromatography. The retention of several polar organic solutes in the reversed-phase liquid chromatography can be controlled easily by addition of alkali metal salts to the mobile phase, owing to electrostatic interaction between the solutes and the metal ion complexed by the crown ether moiety on the stationary phase.
ON THE DIFFERENCE IN REACTION PATHWAYS OF STEAM REFORMING OF METHANOL OVER COPPER-SILICA AND PLATINUM-SILICA CATALYSTS
Authors: Takahashi Kazunari , Kobayashi Haruo , Takezawa Nobutsune 
Published: July 2006

Abstract
Steam reforming of methanol CH3OH + H2O\ightharpoonupCO2 + 3H2 proceeded through different pathways over copper-silica and platinum-silica catalysts. This was ascribed to the difference in the reactivities of formaldehyde intermediates formed in the reaction over these catalysts.
PHOTOISOMERIZATION OF 1-METHOXYPHENAZINE-N,N-DIOXIDE IN PROTIC AND APROTIC SOLVENTS
Authors: Kawata Hiroki , Niizuma Shigeya , Kumagai Tsutomu , Kokubun Hiroshi 
Published: July 2006

Abstract
Photoisomerization of 1-methoxyphenazine-N,N-dioxide was investigated in protic and aprotic solvents. It showed photochromism in aprotic solvents. In protic solvents, irreversible photoisomerization occurred and the photoproduct was identified to be the methoxyl derivatives of oxepinoquinoxaline N-oxide.
DIRECT SYNTHESIS OF ISOPARAFFINS FROM SYNTHESIS GAS
Authors: Fujimoto Kaoru , Adachi Michiaki , Tominaga Hiro-o 
Published: July 2006

Abstract
The product distribution of Fischer–Tropsch synthesis was drastically improved by utilizing hybrid catalysts prepared by combining F-T catalysts such as cobalt, iron and ruthenium catalysts with metal supported Y zeolite while keeping high activities. About 80% of the product was C4-11 hydrocarbons, most of which were isoparaffins.
HYDROGENATION OF OLEFINS WITH CATIONIC RHODIUM COMPLEX INTERCALATED IN FLUORO TETRASILICI\'{C} MICA
Authors: Miyazaki Takayuki , Tsuboi Akio , Urata Hisao , Suzuki Hiroharu , Morikawa Yutaka , Moro-Oka Yoshihiko , Ikawa Tsuneo 
Published: July 2006

Abstract
The hydrogenation of olefins was studied with a Rh complex catalyst intercalated in a synthetic mica. Steric influence due to the interlayers on the hydrogenation rate is observed not with aliphatic olefins but with cycloolefins. The intercalated catalyst shows enhanced selectivity relative to the homogeneous catalyst in the hydrogenation of 4-vinylcyclohexene.
STEREOSELECTIVE SYNTHESIS OF CIS-α,β-EPOXYESTERS AND ALDEHYDES VIA DIVALENT TIN ENOLATE. A SYNTHESIS OF 2-AMINO-2-DEOXY-d-ARABINITOL
Authors: Mukaiyama Teruaki , Yura Takeshi , Iwasawa Nobuharu 
Published: July 2006

Abstract
A convenient method for the stereoselective synthesis of cis-α,β-epoxyesters and aldehydes is established according to the Sn(OTf)2 mediated cross aldol reaction between α-bromo-α′-silyloxyketone and aldehyde. The reaction is applied to the stereoselective synthesis of 2-amino-2-deoxy-d-arabinitol.
ASYMMETRIC REDUCTION OF PROCHIRAL KETO ESTERS WITH A CHIRAL REDUCING AGENT PREPARED FROM TIN(II) CHLORIDE, CHIRAL DIAMINE, AND DIISOBUTYLALUMINUM HYDRIDE
Authors: Mukaiyama Teruaki , Tomimori Koji , Oriyama Takeshi 
Published: July 2006

Abstract
Asymmetric reduction of prochiral keto esters with a reagent, generated by treatment of a mixture of tin(II) chloride and a chiral diamine derived from (S)-proline with diisobutylaluminum hydride, afforded the corresponding optically active hydroxy esters.
CONFORMATIONAL CHARACTERIZATION OF BIOLOGICALLY ACTIVE PEPTIDES, PRO-LEU-GLY-NH2 AND GRAMICIDIN S, IN THE SOLID AND SOLUTION AS REVEALED BY CONFORMATION-DEPENDENT 13C CHEMICAL SHIFTS
Authors: Saitô Hazime , Tabeta Ryoko 
Published: July 2006

Abstract
13C NMR spectra of biologically active peptides, Pro-Leu-Gly-NH2 and gramicidin S, in the solid state were compared with those in solution, to gain insight of stability of the β-turn structure in the former in solution and of conformational feature of the latter in the solid state.
PHOTOELECTROCHEMICAL CELL USING SiC FOR WATER SPLITTING
Authors: Inoue Tooru , Yamase Toshihiro 
Published: July 2006

Abstract
Photoelectrochemical cell using silicon carbide and Pt electrodes can split water into H2 and O2 without any external bias. Maximum photovoltage was ca. 0.45 V for a &lt;p-SiC/H2O/Pt&gt; photocell and 2.2V for a &lt;p-SiC/H2O/n-SiC&gt; photocell. Energy conversion efficiency to H2 was ca. 0.4% for irradiation with a 500 W Xe lamp.
SELECTIVE SYNTHESIS OF ETHANOL OVER Rh–Ti–Fe–Ir/SiO2 CATALYST AT HIGH PRESSURE SYNGAS CONVERSION
Authors: Arakawa Hironori , Fukushima Takakazu , Ichikawa Masaru , Natsushita Shoshiro , Takeuchi Kazuhiko , Matsuzaki Takehiko , Sugi Yoshihiro 
Published: July 2006

Abstract
A high performance catalyst for ethanol production -has been developed. Ethanol was produced with more than 50% selectivity from syngas over Rh–Ti–Fe–Ir/SiO2 under the condition of 50 atm and 260 °C. The roles of additives were discussed from the point of the reaction behavior and physical property of this catalyst.
OPTICAL RESOLUTION OF KEY COMPOUNDS OF PROSTAGLANDIN SYNTHESIS AND RELATED COMPOUNDS
Authors: Toda Fumio , Tanaka Koichi 
Published: July 2006

Abstract
Hundred per cent optically pure bicyclic lactones and bicyclic ketones were easily obtained By complexation method with optically active 1,6-bis(2-chlorophenyl)-1,6-diphenylhexa-2,4-diyne-1,6-diol.
MECHANISTIC INVESTIGATION OF DISTANNOXANE-CATALYZED URETHANE FORMATION STUDIED By 119Sn NMR SPECTRA
Authors: Otera Junzo , Yano Toru , Okawara Rokuro 
Published: July 2006

Abstract
The mechanism of urethane formation catalyzed By tetraorganodistannoxanes was investigated. The 119Sn NMR spectra and the model reaction between methanol and phenyl isocyanate revealed that the formation of the alkoxy distannoxanes is the initial step.
OXYGENATION OF COBALT(II) SCHIFF BASE COMPLEXES IN ALCOHOLS
Authors: Nishinaga Akira , Kondo Toshiyuki , Matsuura Teruo 
Published: July 2006

Abstract
The oxygenation of cobalt(II) Schiff base complexes in alcohols resulted in irreversible oxidation to give the corresponding alcoholatocobalt(III) complexes, which were converted to hydroxocobalt(III) species By treatment with water. Kinetic studies on the oxidation suggest a mechanism involving rate determining proton transfer from alcohols to cobalt-dioxygen adducts.
ENHANCEMENT OF HUMIDITY SENSITIVITY FOR PEROVSKITE-TYPE OXIDES HAVING SEMICONDUCTIVITY
Authors: Shimizu Yasuhiro , Shimabukuro Muneharu , Arai Hiromichi , Seiyama Tetsuro 
Published: July 2006

Abstract
The humidity sensitivities of SrSnO3 and BaSnO3 were enhanced slightly By means of calcining their hydroxides, which were prepared by a coprecipitation method. The partial substitution of the A site element of the perovskite-type oxides with lanthanum was more useful for the enhancement of the sensitivity. The highest sensitivity was found in Sr0.95La0.05SnO3 among the specimens studied.
ELECTROPHILIC REACTION OF ALLYLTRIMETHYLSILANE WITH NITRILES IN THE PRESENCE OF BORON TRICHLORIDE
Authors: Hamana Hiroshi , Sugasawa Tsutomu 
Published: July 2006

Abstract
Allyltrimethylsilane reacted with various nitriles in the presence of boron trichloride, giving after hydrolysis β,γ-unsaturated ketones in high yields. The reactions of substituted allyltrimethylsilanes and intramolecular reaction of allylic trimethylsilane with nitrile were also studied.