bluuebunny/crossref_metadata_2025_split huggingface dataset:
HYDROGEN KINETIC ISOTOPE EFFECTS IN SULFONYLOXYLATION AND AROYLOXYLATION OF ARENES
Authors: Kobayashi Michio , Usui Masao , Hisada Ryuki , Minato Hiroshi 
Published: July 2006

Abstract
Hydrogen kinetic isotope effects in the reactions between arenes and m-nitrobenzenesulfonyl peroxide and aroyl p-toluenesulfonyl peroxides have been investigated. In ionic sulfonyloxylations, no primary isotope effect was observed, whereas in free-radical sulfonyloxylations and aroyloxylations, some primary isotope effect was observed.
CATALYTIC ENANTIOSELECTION BY CHIRAL TRANSITION-METAL COMPLEXES. I. DEHYDROGENATION OF RACEMIC α-PHENYLETHANOL BY RuCl2(PPh3)3 AND (+)-NEOMENTHYLDIPHENYLPHOSPHINE
Authors: Ohkubo Katsutoshi , Hirata Keiichi , Yoshinaga Kohji , Okada Masahide 
Published: July 2006

Abstract
The enantioselective dehydrogenation of racemic (R-(+) and S-(−)) α-phenylethanol by RuCl2(PPh3)3 and (+)-neomenthyldiphenylphosphine at 180°C showed constant ratios of kR⁄kS in the absence of benzalacetone. The kR⁄kS value increased almost linearly with the benzalaceton concentration and decreased with the larger amounts of the chiral phosphine under the present reaction conditions.
EFFECTS OF SUBSTITUENTS ON THE ULTRAVIOLET SPECTRA OF THE PHOTOISOMERS OF BENZYLIDENEANILINES
Authors: Kobayashi Michio , Yoshida Masato , Minato Hiroshi 
Published: July 2006

Abstract
The UV spectra of the photoisomers of substituted benzylideneanilines are determined in solid matrix at 77K, and the conformations of the photoisomers are estimated from the effects of substituents on the spectra.
A CONVENIENT METHOD FOR N4-BENZOYLATION OP CYTIDYLIC AND DEOXYCYTIDYLIC ACIDS BY MEANS OF O-ETHYL S-BENZOYLDITHIOCARBONATE
Authors: Takaku Hiroshi , Shimada Yoshifusa , Morita Yoshiaki , Hata Tsujiaki 
Published: July 2006

Abstract
O-Ethyl S-benzoyldithiocarbonate was found to be a useful reagent for benzoylation of the 4-amino groups of cytidine 5′-phosphate and deoxycytidine 5′-phosphate. By use of the reagent, N4-benzoylcytidine and N4-benzoyldeoxycytidine were also obtained in high yields.
PROTON NMR STUDIES ON ANTIFERROMAGNETIC PHASE TRANSITION OF THE DANO CRYSTAL
Authors: Takizawa Osamu , Yoshioka Toshio , Ohya-Nishiguchi Hiroaki , Deguchi Yasuo 
Published: July 2006

Abstract
Proton NMR spectra of di-p-anisyl nitric oxide radical (DANO) crystal have characteristics of the antiferromagnetic state at low temperatures. The transition temperature to the magnetic ordered state was determined to be TN= 1.67 K ± 0.02 K from the temperature dependence of NMR line shift. The magnetic properties of the DANO crystal are discussed in terms of the magnitude of the resonance field shift.
SELECTIVE DEHYDRATION OF 1,3-DIOLS TO KETONES CATALYZED BY RHODIUM COMPOUNDS
Authors: Kaneda Kiyotomi , Wayaku Masami , Imanaka Toshinobu , Teranishi Shiichiro 
Published: July 2006

Abstract
The reaction of 1,3-diols with various rhodium compounds was carried out at 80°C for 48 hr. The dehydration products, mono-ketones were formed selectively in high yields. A RhCl3 –PPh3 (1:1) catalyst had the highest activity.
GROWTH OF TIN (IV) OXIDE CRYSTALS FROM FLUX OF B2O3–V2O5 SYSTEM
Authors: Shimada Shiro , Kodaira Kohei , Matsushita Toru 
Published: July 2006

Abstract
Needle crystals of SnO2 were grown from the melt of B2O3–V2O5 system containing Zn2SnO4. Increasing the soaking temperature and the V2O5 content of B2O3–V2O5 system tended to increase the size of crystals. The growth direction of the crystals was along the c-axis of SnO2.
A COMPARATIVE STUDY ON THE OXYGEN EXCHANGE OF C-, N-, AND O-NITROSO COMPOUNDS WITH H218O
Authors: Aoyama Masaaki , Takahashi Tomoji , Minato Hiroshi , Kobayashi Michio 
Published: July 2006

Abstract
Acid-catalyzed oxygen exchange of C-, N-, and O-nitroso compounds with 18O-enriched water is investigated. The rates of exchange increase in the order of C-, N-, and O-nitroso compounds, and nitrite esters exchange their oxygens with those of H218O fairly rapidly.
OPTICAL RESOLUTION OF N-BENZOYL-CIS-2-AMINOCYCLOHEXANECARBOXYLIC ACID BY PREFERENTIAL CRYSTALLIZATION
Authors: Nohira Hiroyuki , Watanabe Kyoko , Kurokawa Misao 
Published: July 2006

Abstract
(±)-N-Benzoyl-cis-2-aminocyclohexanecarboxylic acid has been resolved smoothly by preferential crystallization procedure in the form of its benzylamine salt. A typical run for this procedure has been presented.
A CONVENIENT METHOD FOR THE PREPARATION OF CARBOXYLIC ACID FLUORIDES
Authors: Mukaiyama Teruaki , Tanaka Toshio 
Published: July 2006

Abstract
Various carboxylic acid fluorides are prepared in good yields by treating carboxylic acids with 2-fluoro-1,3-dimethylpyridinium salts in the presence of tertiary amines such as triethylamine.
NO2 CATALYZED CHLORINATION OF ANTHRACENE BY METAL CHLORIDES
Authors: Sugiyama Takashi , Tanioka Koji , Ohno Atsuyoshi , Oka Shinzaburo 
Published: July 2006

Abstract
In the presence of nitrogen dioxide, aluminum chloride and some other metal chlorides have been found to be highly selective and regiospecific chlorinating agents for anthracene.
ADSORPTION AND CATALYTIC REDUCTION ACTIVITIES OF METAL-PHTHALOCYANINES FOR NITRIC OXIDE
Authors: Mochida Isao , Takeyoshi Kazuko , Fujitsu Hiroshi , Takeshita Kenjiro 
Published: July 2006

Abstract
Some metal phthalocyanine complexes are found to adsorb NO and reduce it catalytically into N2O, NH3, and N2 with molecular hydrogen at 250°C or below.
EXCITED SINGLET AND TRIPLET PRODUCTS GENERATED FROM THE AIR OXIDATION OF SIMPLE KETONES AND CARBOXYLIC ACIDS IN ALKALINE APROTIC SOLVENTS
Authors: Kamiya Isao , Sugimoto Takashi 
Published: July 2006

Abstract
Using the indirect chemiluminescence technique, we have obtained evidences for the proposal that excited triplet acetone and benzoic acid were generated in the air oxidation of 3-methyl-2-butanone and benzoin respectively in alkaline aprotic solvents. On the other hand, it seemed that excited singlet benzaldehyde was generated from β-phenylpyruvic acid.
STRIPPING-LIKE PHENOMENON OF METAL DITHIZONATES IN GEL CHROMATOGRAPHY
Authors: Deguchi Toshio , Sanemasa Isao , Nagai Hideo 
Published: July 2006

Abstract
Dithizonates of some metals, Zn(II), Cd(II), Pb(II), Hg(II), Bi(III), Co(II) and Cu(II) were chromatographed on Sephadex LH-2O gel column using carbon tetrachloride as an eluent. Among them, the metal ions of Zn, Cd, Pb, Hg and Bi were adsorbed at the top of the column, and the liberated dithizone was easily eluted out of the column, while dithizonates of Co and Cu were eluted out unchanged. These phenomena are very curious but somewhat analogous to the stripping procedure in the solvent extraction process. The mechanism of this “stripping-like phenomenon” seems to be difficult to elucidate but it can be conveniently applied to the purification ,of dithizone reagent as well as to separate some metal dithizonates.
STRUCTURAL STUDIES OF ALOENIN; THE CRYSTAL STRUCTURE OF ITS AGLYCONE
Authors: Hirata Toshifumi , Kushi Yoshihiko , Suga Takayuki , Christensen Arild 
Published: July 2006

Abstract
The recently proposed structure of aloenin (II) has remained uncertain due to difficulty in interpreting the NMR spectra. The structure of its aglycone has now been determined by X-ray crystallography to be as in formula III, and aloenin has therefore been unambiguously confirmed to correspond to structure II.
AMINOMERCURATION XIV. A NOVEL SYNTHETIC ROUTE TO AMINO-ALCOHOLS
Authors: Hodjat-Kachani H , Perie J J , Lattes A 
Published: July 2006

Abstract
Olefins carrying a proximate hydroxyl group undergo efficient aminomercuration, thus affording aminoalcohols. In some cases this synthesis is of particular interest owing to the known therapeutic activity of the products.
THE SYNTHESIS OF l-α-AMINONITRILES
Authors: Kawashiro Katsuhiro , Yoshida Hideyuki , Morimoto Shiro 
Published: July 2006

Abstract
N-o-Nitrophenylsulfenyl(NPS)-l-α-amino acid(alanine, leucine, and phenylalanine) amides were dehydrated in POCl3-pyridine to yield the corresponding NPS-l-α-aminonitriles, which gave the l-α-aminonitrile hydrochlorides by treatment with anhydrous HCl. Optical purity of these nitriles was well retained.
PREPARATION AND CHARACTERIZATION OF MER AND FAC ISOMERS OF TRIS(MESO-2,4-PENTANEDIAMINE)COBALT(III) COMPLEX
Authors: Kojima Masaaki , Fujita Junnosuke 
Published: July 2006

Abstract
The mer and fac isomers of [Co(meso-ptn)3]3+ (meso-ptn = meso-2,4-pentanediamine) have been separated and resolved by column chromatography on SP-Sephadex. The structures of these isomers have been assigned on the basis of the electronic, circular dichroism, 1H- and 13C-NMR spectra.
A GENERAL ESTER SYNTHESIS VIA 2-LITHIO-2-METHYLTHIO-1,3-DITHIANE
Authors: Woessner Warren D 
Published: July 2006

Abstract
A facile synthesis of esters via nucleophilic reaction of the lithiated orthothioester (I) with halides, aldehydes, and ketones is described. The resultant substituted orthothioesters (III) are hydrolyzed to esters with mercuric salts in the presence of aqueous alcohol in high yield.
SENSITIVITY INCREASE OF ATOMIC ABSORPTION ANALYSIS OF VANADYL ION BY APPLYING PRE-ELECTROLYSIS
Authors: Kitamura Mitsutaka , Yamashita Kazuo , Imai Hideo 
Published: July 2006

Abstract
The sensitivity increase of atomic absorption analysis for vanadyl ion by applying pre-electrolysis is described. It is shown that pre-electrolysis results in V–O bond breaking and facilitates free atom population in flame.
THERMAL ADDITION REACTION OF CYCLOHEPTATRIENE TO SOME AROMATIC QUINONES: THE FORMATION OF vic-DITROPYLATION PRODUCTS
Authors: Takeshita Hitoshi , Mori Akira , Mametsuka Hiroaki 
Published: July 2006

Abstract
Thermal addition reaction of cycloheptatriene with some aromatic quinones was studied. In addition to ordinary Diels–Alder adducts, identified in the products were 2,3-ditropylcyclohex-5-ene-1,4-diones which were shown to be formed after series of tropylation, dehydrogenation, and further tropylation processes.
VINYL POLYMERIZATION. 347. A FORMATION OF FREE RADICAL BY THE REACTION OF BENZIDINE WITH METHYL METHACRYLATE IN THE PRESENCE OF Fe(III)-ION AND WATER
Authors: Imoto Minoru , Nakamura Yoshiaki , Ouchi Tatsuro 
Published: July 2006

Abstract
Benzidine, a carcinogenic compound, was found to be able to initiate the polymerization of methyl methacrylate in the presence of water and Fe(III)-ion. The reaction proceeded through a radical mechanism.
ISOLATION AND THE STRUCTURES OF TWO NEW ALKALOIDS, PETASITENINE AND NEOPETASITENINE FROM PETASITES JAPONICUS MAXIM.
Authors: Yamada Kiyoyuki , Tatematsu Hiroshi , Suzuki Masaaki , Hirata Yoshimasa , Haga Masanobu , Hirono Iwao 
Published: July 2006

Abstract
Two new pyrrolizidine alkaloids revealing strong hepatotoxic activity were isolated from Petasites japonicus Maxim., and their structures were deduced to be (3) and (4), respectively based on chemical and spectral evidence.
PHOTOCHEMICAL REDUCTION OF 9,10-o-BENZENO-4a,9,9a, 10-TETRAHYDRO-1,4-ANTHRAQUINONE
Authors: Maruyama Kazuhiro , Kitaguchi Nobuya , Otsuki Tetsuo 
Published: July 2006

Abstract
Irradiation of 9,10-o-benzeno-4a,9,9a,10-tetrahydro-1,4-anthraquinone 1 and xanthene 2 in benzene gave dihydro-monomer 3 and dihydrodimer 4 of 1 as the final products. The course of the reaction and the structure of the unstable intermediates were investigated by means of 1H-CIDNP technique.
AZIRIDINONES. CYCLOADDITION REACTION OF AZIRIDINONE WITH PHENYL ISOCYANATE
Authors: Kakimoto Masaaki , Kajigaeshi Shoji , Kanemasa Shuji 
Published: July 2006

Abstract
Aziridinone reacted with phenyl isocyanate to give two isomers of imidazolidine-2,4-dione which correspond to the cycloadducts of aziridinone to phenyl isocyanate.
BEZIEHUNGEN ZWISCHEN DER LÖSUNGSMITTELPOLARITÄT UND DEN PRODUKTVEROTEILUNGEN BEI DEN DIELS–ALDER-REAKTIONEN
Authors: Nakagawa Kiyoshi , Ishii Yasutaka , Ogawa Masaya 
Published: July 2006

Abstract
Die Beziehungen zwischen der Lösungsmittelpolarität und den Produktverteilungen bei den Diels–Alder-Reaktionen von Cyclopentadien an Acrylnitril oder Methylacrylat vurden untersucht. Die Produktverteilungen erwiesen sich als recht empfindlich gegenüber Lösungsmittelvariation. Zwischen der Lösungsmittelpolarität und den Produktver-teilungen ergaben sich gute Korrelationen, was dafür spricht, dass bei der konkurrierenden Diels–Alder-Reaktion die bevorzugte Addition durch polare Lösungsmittel noch mehr beschleunigt wird.
3-METHYLSULFONYL-3H-BENZ[d]AZEPINE
Authors: Takeuchi Isao , Ozawa Isao , Hamada Yoshiki , Masuda Hideyuki , Hirota Minoru 
Published: July 2006

Abstract
3-Methylsulfonyl-3H-benz[d]azepine was prepared by the reaction of methylsulfinylmethyl carbanion with isoquinoline N-oxide, and its structure was determined by spectroscopic measurements.
THE CENTRAL-CARBON-BONDED PALLADIUM(II) COMPLEXES OF ETHYL ACETOACETATE
Authors: Okeya Seichi , Kawaguchi Shinichi , Yasuoka Noritake , Kai Yasushi , Kasai Nobutami 
Published: July 2006

Abstract
The reaction of sodium tetrachloropalladate(II) with ethyl acetoacetate in aqueous alkaline solution afforded a key intermediate Pd(C6H9O3)2·\frac12H2O [1]. The compound 1 reacts with a base L such as pyridine, 2-methylpyridine, n-butylamine, benzylamine, or 2,2′-bipyridine, resulting in Pd(1-ethoxycarbonylacetonato-c1)2L2 [2]. The central-carbon-bonding of ethyl acetoacetate to palladium has been deduced from the IR and NMR spectra, and finally ascertained by the X-ray analysis of a compound with 2-methylpyridine as L.
PHOTODISSOCIATION OF SODIUM HALIDES IN THE AIR-ACETYLENE FLAME AS STUDIED BY MOLECULAR ABSORPTION FLAME SPECTROSCOPY
Authors: Furuta Naoki , Yoshimura Etsuro , Nemoto Yuko , Haraguchi Hiroki , Fuwa Keiichiro 
Published: July 2006

Abstract
Absorption spectra of sodium halides have been observed in the air-acetyrene flame. Those spectra show the meaningful absorptions with hyperfine structure in the ultraviolet reagion. The absorptions are due to photodissociation process of sodium halides in the flame, and the spectral parameters for the process have been estimated.
ASYMMETRIC OXIDATION OF SULFIDES WITH AN OPTICALLY ACTIVE SUBSTITUTED N-HALOGENOCAPROLACTAM
Authors: Sato Yoshiyasu , Kunieda Norio , Kinoshita Masayoshi 
Published: July 2006

Abstract
Oxidation of sulfides using an optically active substituted N-halogenocaprolactam, (+)-N-chloro-7-isopropyl-4-methyl-2-oxohexamethyleneimine, produces the corresponding optically active sulfoxides. The absolute configuration of sulfoxides obtained depends on the chirality of the caprolactam used. The steric course of this asymmetric oxidation is discussed.
ANODIC ACETOXYLATION OF SUBSTITUTED CYCLOPENTADIENES AND NOVEL SYNTHESIS OF ALLETHROLONE
Authors: Shono Tatsuya , Nishiguchi Ikuzo , Okawa Masahisa 
Published: July 2006

Abstract
The anodic oxidation of substituted cyclopentadienes in acetic acid brought about the facile introduction of acetoxy group into 1,4-positions in relatively good yields. A novel synthesis of allethrolone starting from 2-methyl-3-allylcyclopentadiene was achieved using this unique electrochemical process as a key step.
PHOTOREACTIONS VIA π-π* AND n-π* TRIPLET STATES OF FLAVANONES
Authors: Matsushima Ryoka , Kishimoto Tsuneo , Suzuki Morio 
Published: July 2006

Abstract
Photolyses of flavanone and substituted flavanones in benzene led to the cleavage of the pyrone ring to give corresponding 2′-hydroxychalcones, while similar irradiation of flavanone or 4-chromanone in 2-propanol gave coupling products (pinacols and solvent adducts). However, photolysis of 7,8-benzoflavanone in 2-propanol led to the cleavage of the pyrone ring instead of the formation of coupling products. It is implied that the cleavage of the pyrone ring takes place via π-π* triplet states, while formation of coupling products via n-π* triplet states.
CATALYTIC ACTIVITIES OF SOLID PORPHYRINS FOR THE REDUCTION OF NITRIC OXIDE
Authors: Mochida Isao , Takeyoshi Kazuko , Fujitsu Hiroshi , Takeshita Kenjiro 
Published: July 2006

Abstract
Some metal-tetraphenylporphines(M-TPP) reduce NO catalytically with molecular hydrogen at elevated temperatures. The main products are N2 and NH3 over Co-TPP, and NH3 over Cu-TPP, regardless of the reaction temperatures. Supporting of the complexes on silica-alumina increased the catalytic activity by a factor of eighteen.
TOSYLSULFONIUM IONS AND ACYLSULFONIUM IONS
Authors: Minato Hiroshi , Yamaguchi Kei , Miura Takashi , Kobayashi Michio 
Published: July 2006

Abstract
When p-Tol-SO2-SMe and CF3-SO3Me were allowed to react in a sealed tube, p-Tol-SO2-⊕SMe2 CF3-SO2\ominus was isolated as crystals, which upon reaction with Et2NH yielded p-Tol-SO2NEt2. The reaction between p-Tol-SO2-⊕SMe and FSO3H did not yield p-Tol-SO2⊕SHMe FSO3\ominus but yielded p-Tol-⊕SO2H-SMe FSO3\ominus. From the reaction between PhCH2CO-SMe and CF3SO3Me, PhCH2CO-⊕SMe2 was not observable, and the products found were Me3S⊕ and PhCH2CO2Me.
CONFORMATION OF COORDINATED AMINO ACIDS. I. TETRAMMINE(l-PHENYLALANINATO)COBALT(III) ION
Authors: Sakaguchi Ushio , Yoneda Hayami 
Published: July 2006

Abstract
The ABX type spectrum of three CH protons of l-phenylalanine in tetrammine(l-phenylalaninato)cobalt(III) ion was analysed and it was found that fractional populations of three rotational isomers of the amino acidato ligand are significantly different from those in the free amino acid.
TWO STEP OXIDATION REACTIONS OF ALCOHOLS ON AN ILLUMINATED RUTILE ELECTRODE
Authors: Miyake Mikio , Yoneyama Hiroshi , Tamura Hideo 
Published: July 2006

Abstract
Alcohols (methanol, ethanol and iso-propanol) were found to be oxidized by the “current doubling” process on an illuminated rutile electrode. The reactivity of alcohols decreased in the order, methanol &gt; ethanol &gt; iso-propanol. This tendency seems to correspond to the amount of adsorbed alcohol on rutile.
METALLOPORPHYRINS. I. PHOTOINDUCED meso-ACYLAMINATION OF PORPHYRIN RING USING ACYL AZIDES
Authors: Ichimura Kunihiro 
Published: July 2006

Abstract
Zinc octaethylporphin sensitizes the photodecomposition of acyl azide to yield zinc complex of 5-acylamino-2,3,7,8,12,13-17,18-octaethylporphin.
SYNTHESIS OF OPTICALLY ACTIVE METHYLOXIRANE FROM PROPYLENE CHLOROHYDRIN IN THE PRESENCE OF Co(SALEN) TYPE COMPLEX
Authors: Ishimori Michihiro , Aoi Haruhiko , Takeichi Tsutomu , Tsuruta Teiji 
Published: July 2006

Abstract
In the presence of optically active CoIII complex, methyloxirane was prepared from propylene chlorohydrin using a variety of bases. The highest optical purity of methyloxirane obtained was 27 %.
RESTRICTED ROTATION INVOLVING THE TETRAHEDRAL CARBON. XIX. EFFECTS ON CHARGE-TRANSFER INTERACTION ON THE POPULATION OF ROTAMERS AND ON BARRIERS TO ROTATION IN 1-(9-FLUORENYL)-2-NAPHTHYL AROATES
Authors: Nakamura Mikio , Oki Michinori 
Published: July 2006

Abstract
Equilibrium constants between ap and sp forms of 1-(9-fluorenyl)-2-naphthyl aroates suggest the presence of charge-transfer interaction between the fluorenyl group and an aroyl group with a nitro substituent. The barriers to rotation of the nitro compound were also consistent with the presence of the charge-transfer interaction.
PALLADIUM AND PLATINUM COMPLEXES OF A NEW CHELATE YLIDE
Authors: Sugita Norifumi , Miyamoto Takeshi , Sasaki Yukiyoshi 
Published: July 2006

Abstract
A new phosphorus chelate ylide, benzoylmethylenedibenzyl-2-dibenzylphosphinoethylphosphorane and its complexes of Pd(II) and Pt(II) have been prepared and characterized.
EFFECT OF p-BENZOQUINONE ON SPECTRAL SENSITIZATION OF SILVER CHLORIDE
Authors: Abe Takao , Sukigara Mitsunori , Honda Kenichi 
Published: July 2006

Abstract
The spectral sensitization of silver chloride has been studied electrochemically. The fact that the effect of p-benzoquinone on the dye-sensitized photocurrent depends on the kinds of dye and electrolyte suggests the existence of two electron transfer channels in the sensitization process.
CATALYTIC ACTIVITY OF ZrO2 AND ThO2 FOR H-D EXCHANGE REACTION BETWEEN METHYL GROUP OF ADSORBED ISOPROPYL ALCOHOL-d8 AND SURFACE OH GROUP
Authors: Yamaguchi Tsutomu , Nakano Yasuko , Iizuka Tokio , Tanabe Kozo 
Published: July 2006

Abstract
The H-D exchange reaction of methyl group of adsorbed isopropyl alcohol-d8 with surface OH group was studied over several metal oxides by means of reflectance IR spectroscopy. Zirconium oxide and ThO2 showed a significant catalytic activity for the exchange reaction, though SiO2, Al2O3, TiO2, and SiO2–Al2O3 were all inactive.
HIGH-PERFORMANCE LIQUID-CHROMATOGRAPHIC SEPARATION OF INDIVIDUAL BILE ACIDS: FREE, GLYCINE AND TAURINE CONJUGATED BILE ACIDS
Authors: Okuyama Sumihiko , Uemura Daisuke , Hirata Yoshimasa 
Published: July 2006

Abstract
High-performance liquid-chromatographic separation of bile acids, free and conjugated with taurine and glycine, is described. The analysis of free and glycine conjugated bile acids is based on the esterification of the carboxylic group of bile acids with 1-p-nitrobenzyl-3-p-tolyltriazene. On the other hand, taurine conjugated bile acids are separated and detected by an ultraviolet detector (210 nm), directly.
PROTON DYNAMICS IN TIN(II) CHLORIDE DIHYDRATE STUDIED BY NMR
Authors: Kiriyama Hideko , Nakamura Osamu , Kiriyama Ryôiti 
Published: July 2006

Abstract
The proton T1 and T1ρ in single crystal and polycrystalline SnCl2·2H2O were measured. The T1ρ exhibits a minimum around 270 K. Both T1 and T1ρ are dominated by three-fold reorientations of water molecules. The activation energy is 49 kJ/mol. The deuteron NMR spectra suggest the combined motion of the 180° flip and the three-fold rotation. Near Ttr 218 K, the lg T1 vs 1/T curve shows a casp shaped dip as a critical phenomenon.
CHROMATOGRAPHIC STUDY OF OPTICAL RESOLUTION I. COMPLETE RESOLUTION OF THE NEUTRAL COMPLEX, FACIAL ISOMER OF TRIS(β-ALANINATO)COBALT(III)
Authors: Yoneda Hayami , Yoshizawa Tadashi 
Published: July 2006

Abstract
Based on the consideration of crystal structures of three diastereomeric salts composed of the tris(ethylenediamine)metal complex and the d-tartrate anion, an attempt was made to resolve tris(β-alaninato)cobalt(III) by the chromatographic technique, and a complete resolution was achieved through a Sephadex column using sodium d-tartrate 30% aqueous ethanol solution as an eluent.
THE STRUCTURE OF THE 1:1 ADDUCT OF “HECTOR′S BASE” WITH ARYLCYANAMIDES BOND SWITCH ON HYPERVALENT SULFUR
Authors: Akiba Kin-ya , Tsuchiya Tohru , Inamoto Naoki , Onuma Ken-ichi , Nagashima Nobuya , Nakamura Asao 
Published: July 2006

Abstract
The structure of the 1:1 adduct of “Hector’s base” with arylcyanamides was determined by X-ray analysis of tris-p-bromophenyl derivative (1a). The molecule is almost planar and the strong interaction was exemplified between the sulfur and the nitrogen atoms.
The Palladium Catalyzed Carbonylation of Styrene. Effects of the Phosphines on the Products
Authors: Sugi Yoshihiro , Bando Ken-ichiro 
Published: July 2006

Abstract
The carbonylation of styrene with carbon monoxide and ethanol was investigated in the presence of diphosphine palladium complexes Pd[Ph2P(CH2)nPPh2]Cl2 (n=1–6,10). Ethyl 3-phenylpropionate was obtained significantly when the phosphines (n=3,4,5) were used. The predominant isomer in the case of the phosphines (n=l,6,10) was ethyl 2-phenylpropionate similar to the mono-dentate phosphines, such as Ph3P and Ph2PBu.
THE SESQUITERPENES OF CACALIA SPECIES
Authors: Naya Keizo , Miyoshi Yasushi , Mori Hideo , Takai Kunihiro , Nakanishi Mikihiko 
Published: July 2006

Abstract
Twelve sesquiterpenes including six new compounds have been isolated from Cacalia delphiniifolia Sieb. et Zucc. and C. hastata L. var. tanakae (Franch. et Savat.) Kitam., and their structures have also been determined by their physical and chemical properties.
PHOTOLYSES OF TRICYCL0[4.2.2.03,5]DECA-7-EN-2-ONE SYSTEMS
Authors: Sasaki Tadashi , Kanematsu Ken , Okamura Naoya 
Published: July 2006

Abstract
Photolyses (Pyrex, &gt; 290 nm) of tricyclodecaenone derivatives (cyclopropylketone-π-methane moiety) gave the exclusive 1,3-acyl shift products in high yields.