bluuebunny/crossref_metadata_2025_split huggingface dataset:
TRANSLATIONAL ENERGY OF THE EXCITED HYDROGEN ATOM PRODUCED BY CONTROLLED ELECTRON IMPACT (300 eV) ON HYDROGEN CHLORIDE AND WATER
Authors: Ogawa Teiichiro , Masumoto Fumikazu , Ishibashi Nobuhiko 
Published: July 2006

Abstract
The emission of the Balmer β line by 300 eV electrons were measured by use of a Fabry–Perot etalon. The translational energies of H and D atoms (n = 4) were determined by its Doppler width.
HCl 7.3±0.2 eV, DCl 7.5±0.2 eV,
H2O 2.3±0.2 eV, D2O 3.1±0.2 eV.
CYCLIZATION OF POLYENES XVII . SYNTHESIS AND PHEROMONE ACTIVITY OF Dl-NEOCEMBRENE
Authors: Kitahara Yoshio , Kato Tadahiro , Kobayashi Toyohiko , Moore Barry P 
Published: July 2006

Abstract
Neocembrene (4), a scent trail pheromone isolated recently by one of us (B. P. M.) from Australian termites, was synthesized in a dl-form starting from chloroketone (2), which was obtained from trans geranyl geranic acid chloride (1) by biogenetic type reaction. dl-Neocembrene exhibited the pheromone activity of the same order as that of the natural pheromone.
PHOTOREACTIONS OF HETEROAROMATIC COMPOUNDS VI. EFFECTS OF COORDINATING METAL IONS ON THE PHOTOREACTION OF 2-PYRIDINECARBOXYLATE IN AQUEOUS SOLUTIONS
Authors: Kimura Tsutomu , Kamimura Junji , Takada Kotaro , Sugimori Akira 
Published: July 2006

Abstract
Coordinating iron(III) to 2-pyridinecarboxylate brings about the photochemical formation of 2,2′-bipyridine and pyridine. Coupled oxidation and reduction between 2-pyridinecarboxylate and copper(II) gives 2-hydroxypyridine and copper(0).
SELECTIVE ORTHO-WALLACH REARRANGEMENT OF 1:1 COMPLEX OF AZOXYBENZENES WITH SbCl5
Authors: Yamamoto Jiro , Nishigaki Yukihiro , Imagawa Masahiro , Umezu Masahiro , Matsuura Teruo 
Published: July 2006

Abstract
Treatment of azoxybenzenes with SbCl5 gave crystalline 1:1 complexes, which on heating underwent selective ortho-Wallach rearrangement to yield exclusively o-hydroxyazobenzenes.
STEREOSELECTIVE SYNTHESIS OF OPTICALLY ACTIVE MANICONES: ALARM PHEROMONE OF ANT
Authors: Banno Kazuo , Mukaiyama Teruaki 
Published: July 2006

Abstract
(+)- and (−)-Manicone, (+)-(6S)- and (−)-(6R)-(4E)-4,6-dimethyl-4-octen-3-one, were synthesized in good yields by the TiCl4-promoted reaction of 3-trimethylsiloxy-2-pentene with (+)-(2S)- or (−)-(2R)-2-methylbutanal.
SELECTIVE BROMINATION OF POLYOLEFINS
Authors: Kitahara Yoshio , Kato Tadahiro , Ichinose Isao 
Published: July 2006

Abstract
Although the reaction mechanism is obscure at present, 2,4,4,6-tetrabromo-2,5-cyclohexadien-1-one (2) was found to be a good reagent for the selective bromination of polyenes, that is, terminal double bond of geranyl and farnesyl cyanides was selectively brominated by merely being stirred with equimolar amount of 2 in CH2Cl2 solution, giving 6,7-dibromogeranyl (yield 98%) and 10,11-dibromofarnesyl (yield 65%) cyanide, respectively.
REACTION OF o-ACYLPHENYLDIAZOMETHANE I. FORMATION OF 1-ALKOXYISOBENZOFURANS BY INTRAMOLECULAR CARBENIC REACTION
Authors: Hamaguchi Masashi , Ibata Toshikazu 
Published: July 2006

Abstract
1-Methoxyisobenzofurans were generated as the transient intermediate in the Cu(acac)2 catalyzed decomposition of methyl o-diazomethylbenzoate. The intermediates were confirmed by trapping with dienophiles or alcohols to give Diels–Alder adducts and cyclic orthobenzoates (4), respectively.
INTERACTION BETWEEN DYES AND POLYELECTROLYTES III. STRUCTURAL EFFECT OF POLYANIONS ON THE FORMATION OF AGGREGATED METHYLENE BLUE
Authors: Shirai Masamitsu , Nagatsuka Tatsuki , Tanaka Makoto 
Published: July 2006

Abstract
Effects of the structures of polyvinylsulfate and its homologues on the aggregation of methylene blue were studied in aqueous solution. Important factors were the number of anionic site per polymer molecule and the flexibility of polymer chain.
METAL-CATALYZED ORGANIC PHOTOREACTIONS 1,4-ADDITION OF METHANOL TO α, β -UNSATURATED KETONES OR ALDEHYDE
Authors: Sato Tadashi , Ito Osamu , Miyahara Masayuki 
Published: July 2006

Abstract
α,β-Unsaturated ketones or aldehyde, upon irradiation in methanol in the presence of UO2Cl2, afforded cyclic acetals or compound derived therefrom, with the bond formation between β-carbon atom of unsaturated carbonyl compounds and methanol carbon atom.
A NOVEL TETRAMETHYLTHIOUREA-CATALYZED DECOMPOSITION OF STABILIZED SELENONIUM YLIDES
Authors: Tamagaki Seizo , Hatanaka Isao 
Published: July 2006

Abstract
A few stabilized selenonium ylides react with a catalytic amount of tetramethylthiourea in the presence of acetic acid at room temperature to give the corresponding selenides and olefins in good yields.
STRUCTURAL STUDY OF OPTICAL RESOLUTION II. THE CRYSTAL STRUCTURE OF LITHIUM TRIS(ETHYLENEDIAMINE)CHROMIUM(III) d-TARTRATE TRIHYDRATE
Authors: Kushi Yoshihiko , Kuramoto Masahiro , Yoneda Hayami 
Published: July 2006

Abstract
It has been found that, in the crystal of Li(+)589-[Cr(en)3] (d-tart)2·3H2O, the complex cation Λ-δδδ-[Cr(en)3]3+ is sandwiched between two crystallographically different d-tartrate anions. The centers of the both anions are located on the threefold axis of the octahedral complex cation and the characteristic local “[Cr(en)3] (d-tart)2” block is formed. The structural feature of this local block bears a close resemblance to that found in (+)589-[Co(en)3] Br·d-tart·5H2O.
SELECTIVE HYDROGENATION OF 1,3-BUTADIENE OVER ALKALINE EARTH METAL OXIDES
Authors: Tanaka Yasutaka , Hattori Hideshi , Tanabe Kozo 
Published: July 2006

Abstract
1,3-Butadiene was selectively hydrogenated to butenes without further hydrogenation to butane over MgO, CaO, SrO, and BaO. The oxides showed their maximum activity when evacuated around 800–1000°C, and the maximum activity increased in the order of BeO&lt;&lt;BaO&lt;MgO&lt;SrO&lt;CaO.
DIOXYGEN COMPLEXES OF NICKEL(I) BOUND TO POLYMERS
Authors: Chimura Yasuo , Beppu Masazo , Yoshida Satohiro , Tarama Kimio 
Published: July 2006

Abstract
Three polymer-bound Ni(I) complexes were prepared; polymer complex I was prepared from NiBr(P(C6H5)3)3 and resin-substituted triphenylphosphine (polymer I), polymer complex II was from NiBr(P(C6H5)3)3 and resin-substituted pyridine (polymer II), and polymer complex III was from Na[Ni(salen)] and resin-substituted methyltriphenylphosphonium bromide (polymer III). Under atmospheric oxygen these complexes showed esr signals (g⁄⁄= 2.035–2.037, g⊥ = 2.002–2.003), which were attributed to new dioxygen complexes of Ni(I). Their electronic structures should be formally described as Ni(II)–O2−.
AMINOMERCURATION XIII. ALLENES AMINATION
Authors: Hodjat-Kachani H , Perie J J , Lattes A 
Published: July 2006

Abstract
Aminomercuration of allenes makes available a new route to ethylenic arylamines, a reaction which affords the easy insertion of the chain (Remark: Graphics omitted.) either at the nitrogen atom (ilamycin analogs) or at the ortho position of secondary aromatic amines. Scope and limitations are given.
THE CARBON-13 NUCLEAR MAGNETIC RESONANCE SPECTRA OF THE 1R(S),3S(R),8R(S),10S(R)- AND 1S(R),3R(S),8R(S),10S(R)-3,5,7,7,10,12,14,14-OCTAMETHYL-1,4,8,11-TETRAAZACYCLOTETRADECA-4,11-DIENENICKEL(II) COMPLEXES
Authors: Ito Tasuku , Soma Kazuhiro , Watanabe Masanobu 
Published: July 2006

Abstract
The carbon 13 nuclear magnetic resonance spectra of the title compounds were measured in aqueous solutions with Fourier-Transform NMR method. The resonance lines were assigned on the basis of off-resonance decoupling, selective proton decoupling, and comparison of the spectra with those of the stereospecifically deuterated derivatives.
THE PHOTOCHEMICAL REACTION OF 3,4,5-TRIPHENYL-4-OXAZOLIN-2-ONE
Authors: Tsuge Otohiko , Oe Koji , Ueyama Yasuo 
Published: July 2006

Abstract
Irradiation of 3,4,5-triphenyl-4-oxazolin-2-one (1) in benzene, under nitrogen, with or without iodine gave benzanilide and phenanthroxazolinone 2. However, in the presence of oxygen 1 was photochemically converted to benzanilide, benzoic acid, and benzamidobenzophenones. This photooxygenation is interpreted by the pathway proceeding via an initial attack of singlet oxygen to 1 forming a dioxetane, followed by ring cleavage to yield N,N-dibenzoylaniline (6) which gives final products.
PHOTO-REACTION OF AZOXYSULFONES. A NOVEL PHOTO-REARRANGEMENT
Authors: Kobayashi Michio , Ochiai Kunihiro , Minato Hiroshi 
Published: July 2006

Abstract
Photolysis of arylazoxy p-tolyl sulfones was investigated. A reaction mechanism proposed involves photo-rearrangement to arenediazonium sulfonates and subsequent generation of aryl free radicals.
HETEROGENEOUS CODIMERIZATION OF ACETYLENES AND ALLYL HALIDES WITH POLYMER-SUPPORTED PdCl2 CATALYST
Authors: Kaneda Kiyotomi , Uchiyama Tetsuya , Terasawa Masami , Imanaka Toshinobu , Teranishi Shiichiro 
Published: July 2006

Abstract
The reaction of acetylenes and allyl halides using polymer-supported PdCl2 complex was carried out at room temperature for 48 hr. Codimerization products, 1,4-pentadiene derivatives, could be obtained in high yields. The catalytic behavior of the heterogeneous polymer Pd complex was compared with that of the homogeneous complex.
REACTION OF gem-DIHALIDES WITH NICKEL(O) COMPLEXES: SELECTIVE METHYLENE INSERTION INTO C–H BOND OF OLEFINS
Authors: Takahashi Shigetoshi , Suzuki Yoshiaki , Sonogashira Kenkichi , Hagihara Nobue 
Published: July 2006

Abstract
The reaction between methylene dihalides and ethylene assisted by the nickel(O)-triphenylphosphine complex has been found to give propylene, which was formed by selective methylene insertion into the olefinic C–H bond of ethylene. Similarly propylene and methylene dibromide gave isobutylene.
THE ISOLATION OF FAC(N)-d-ASPARTATO-l-ASPARAGINATOCOBALT(III) COMPLEX
Authors: Takenaka Hideto , Shibata Muraji 
Published: July 2006

Abstract
An isomeric complex of cobalt(III) containing a d-aspartate ion and a l-asparaginate ion as tridentate ligands has been isolated and identified as fac(N) isomer on the basis of IR, PMR and absorption spectra. The absorption spectrum in an alkaline solution revealed double maxima in the second absorption band region.
THE MAGNETIC CIRCULAR DICHROISM SPECTRUM OF AZULENOD[1,2,3-cd]PHENALENE
Authors: Tajiri Akio , Hatano Masahiro , Murata Ichiro , Nakasuji Kazuhiro 
Published: July 2006

Abstract
The magnetic circular dichroism (MCD) spectrum of azuleno[1,2,3-cd]phenalene was measured, at room temperature, in the wavelength region of 1000 nm to 200 nm. The compound showed the Faraday B terms in the MCD spectrum caused by a magnetic coupling of the low-lying non-degenerate electronic states. A careful inspection of the MCD spectrum with the aid of its quantum mechanical calculations led to preferable spectroscopic assignments of the complicated absorption bands of azuleno[1,2,3-cd]phenalene.
SIMPLE SYNTHESIS OF THE CONTINUOUS SiC FIBER WITH HIGH TENSILE STRENGTH
Authors: Yajima Seishi , Omori Mamoru , Hayashi Josaburo , Okamura Kiyohito , Matsuzawa Takao , Liaw Chiu-fong 
Published: July 2006

Abstract
A polycarbosilane, the starting material of β-SiC fibers, was prepared without autoclave. The new method is simple and more economical than the previous one. Furthermore, a great number of bundles of SiC fibers were obtained by way of oxidative reactions of polycarbosilane fibers.
DIRECT GLUCOSIDATION OF TETRA-O-BENZYL-α-d-GLUCOSE BY DICHLOROSILANE-SILVER SULFONATE SYSTEM
Authors: Koto Shinkiti , Morishima Naohiko , Zen Shonosuke 
Published: July 2006

Abstract
A system of dichlorodiphenylsilane - silver sulfonate has been found to be of use for the direct glucosidation of 2,3,4,6-tetra-O-benzyl-α-d-glucopyranose. Efficient synthesis of trehaloses with the system is described.
SYNTHESIS OF ALKYL HALIDES FROM ALCOHOLS BY THE REACTION WITH 2-ALKOXY-3-ETHYL BENZOTHIAZOLIUM SALTS
Authors: Hojo Ko , Mukaiyama Teruaki 
Published: July 2006

Abstract
2-Alkoxybenzothiazolium salts, formed in situ from 2-fluorobenzothiazolium salt and alcohols, reacted with iodide, bromide, and chloride ion to give the corresponding alkyl halides in good yields. The present procedure afforded a convenient method for the preparation of highly optically active alkyl halides such as 2-halooctanes.
THERMAL HYDROGEN TRANSFER FROM ALCOHOLS TO TETRACYANOETHYLENE
Authors: Nishiguchi Takeshi , Sakakibara Hiromitsu , Fukuzumi Kazuo 
Published: July 2006

Abstract
Hydrogen transferred thermally from several organic compounds such as alkylarylcarbinols, tetrahydroquinoline, and 2,5-dihydrofuran to tetracyanoethylene. The mechanism of the hydrogen transfer from the alcohols was investigated.
SYNTHESIS OF DEISOVALERYLBLASTMYCIN
Authors: Aburaki Shinpei , Kinoshita Mitsuhiro 
Published: July 2006

Abstract
Methyl 3-O-benzoyl-2-C-butyl-2,5-dideoxy–β-l-arabinofuranoside (1) was converted to (2R,3R,4S)-4-(N-benzyloxycarbonyl-l-threonyloxy)-3-benzyloxy-2-butylpentanoic acid (8). Lactonization of 8 was conducted through the 2-pyridylthio ester 9 activated by silver perchlorate to afford the desired dilactone 10 (33% yield), which was transformed to the title compound.
CATALYTIC ENANTIOSELECTION BY CHIRAL TRANSITION–METAL COMPLEXES. II. DEHYDROGENATION OF RACEMIC 1-PHENYLETHANOL BY in situ PREPARED RhCl((+)-neomenthyldiphenylphosphine)3 COMPLEX
Authors: Ohkubo Katsutoshi , Ohgushi Tsutomu , Yoshinaga Kohji 
Published: July 2006

Abstract
The magnitude of the enantioselection of racemic 1-phenylethanol by RhCl((+)-neomenthyldiphenylphosphine)3 prepared in situ from (RhCl (CH2=CH2)2)2 and the chiral phosphine was the greatest around [phosphine]0/[(RhCl(CH2=CH2)2)2]≅6 and was considerably elevated by the addition of unsaturated ketones and by lowering the reaction temperature.
SINTERING OF MAGNESIUM OXIDE PREPARED BY ALKOXY-METHOD
Authors: Yamaguchi Osamu , Tonami Hitoshi , Shimizu Kiyoshi 
Published: July 2006

Abstract
Magnesium oxide was prepared by the alkoxy-method, and its sinterability was studied. Compact specimens exceeding 96 % of bulk density were obtained by sintering at 1200°C for 3 h.
STUDIES ON THE REACTIONS OF BIS(ACETYLACETONATO)PLATINUM (II) WITH LEWIS BASES. III. FORMATION OF NON-CHELATED, O-BONDED ACETYLACETONATO COMPLEX, [Pt(ACETYLACETONATO-O)2(PEt3)2]
Authors: Ito Takashi , Kiriyama Takashi , Yamamoto Akio 
Published: July 2006

Abstract
Bis(acetylacetonato)platinum(II) reacted with triethylphosphine (PEt3) in diethyl ether at low temperature to yield [Pt(C5H7O2)2(PEt3)2], 1, which was isolated and characterized on the basis of IR and H-NMR spectroscopy and elemental analysis. Complex 1 represents the first example of the transition metal complex which possesses singly O-bonded acetylacetonato ligands.
CLEAVAGE OF CARBON–HALOGEN BOND BY THE HYDROGEN TRANSFER FROM ORGANIC COMPOUNDS CATALYZED BY NOBLE METAL SALTS
Authors: Imai Hideaki , Nishiguchi Takeshi , Tanaka Motoo , Fukuzumi Kazuo 
Published: July 2006

Abstract
In the presence of noble metal salts, especially Pd(II) salts, the carbon–halogen bond of aryl halides underwent hydrogenolysis with organic hydrogen donors such as indoline and tetrahydroquinoline, and the corresponding aryl compounds and hydrogen halides were formed. The addition of bases promoted the hydrogenolysis.
OPTICAL INTERCONVERSION OF ENANTIOMERIC SECONDARY ALCOHOLS USING 2-FLUOROBENZOTHIAZOLIUM SALT
Authors: Mukaiyama Teruaki , Hojo Ko 
Published: July 2006

Abstract
A convenient method for optical interconversion of enantiomeric secondary alcohols was established according to the following procedures: treatment of optically active 2-alkyloxybenzothiazolium salt , formed in situ from 2-fluoro salt I and optically active secondary alcohols, with trichloroacetic acid to give the corresponding esters with inversion of configuration, and facile hydrolysis of the esters to alcohols with retention.
THERMAL SQUARE PLANAR-TO-OCTAHEDRAL TRANSFORMATION OF [Ni(bimd)4](NO3)2·2.5C2H5OH IN SOLID PHASE
Authors: Tsuchiya Ryokichi , Kyuno Eishin , Uehara Akira , Joba Seiji , Ohba Shigeki 
Published: July 2006

Abstract
The reaction involving the increase of the coordination number from four to six, viz, the transformation from square planar to octahedral was found in the benzimidazole complex, [Ni(bimd)4](NO3)2·2.5C2H5OH upon heating. The transformation was considered to be due to the approach of the nitrate ions toward the central ion along the vertical axis.
CHEMICAL SIMULATION OF TROPIC ACID BIOSYNTHESIS. STEREOSELECTIVE CHEMICAL CONVERSION OF OPTICALLY ACTIVE PHENYLALANINE TO (R)- AND (S)-TROPIC ACID
Authors: Yamada Shun-ichi , Koga Kenji , Juang Tzuoh Miin , Achiwa Kazuo 
Published: July 2006

Abstract
(R)- and (S)-tropic acid were prepared by trifluoroacetolysis of O-nitrobenzenesulfonate((S)-III) of optically active 3-phenyllactic acid ester(S)-II) in good yield and with high retention of optical purity according to the biosynthetic pathway starting from l-phenylalanine(l-I). Based on the above findings, natural (−)-littorine(VIII) and (−)-hyoscyamine(X) were synthesized from d-phenylalanine.
ALLYLSILANES AS SYNTHETIC INTERMEDIATES. II. SYNTHESES OF HOMOALLYL ETHERS FROM ALLYLSILANES AND ACETALS PROMOTED BY TITANIUM TETRACHLORIDE
Authors: Hosomi Akira , Endo Masahiko , Sakurai Hideki 
Published: July 2006

Abstract
The reaction of allylsilanes with acetals in the presence of titanium tetrachloride afforded homoallyl ethers in good yields. The reaction took place regiospecifically with transposition of the allyl group.
COLUMN-CHROMATOGRAPHIC STUDY ON THE ISOMERISM OF THE BIS(ETHYLENEDIAMINE) SARCOSINATOCOBALT(III) ION WITH TWO ASYMMETRIC CENTERS
Authors: Fujita Miho , Yoshikawa Yuzo , Yamatera Hideo 
Published: July 2006

Abstract
A column-chromatographic method has been successfully applied to the separation of all the four possible isomers of [Co(sar)(en)2]2+ (sar=CH3NHCH2COO−, en = H2NCH2CH2NH2), to the correlation of their absolute configuration, and to the determination of the difference in stability between the diastereomers (0.9 kcal/mol).
REACTION OF BIS (α-BROMOALKYL) SULFIDE WITH DIIRON NONACARBONYL
Authors: Koyanagi Tohru , Hayami Jun-ichi , Kaji Aritsune 
Published: July 2006

Abstract
An iron-stabilized thiocarbonyl ylide was generated by the reaction of bis(α-bromobenzyl) sulfide with diiron nonacarbonyl. This species was not a typical 1,3-dipole, but underwent a [2+4] type addition reaction with furan.
REACTIONS OF 11-OXYGENATED 17α-ACETYL-12α,13α-EPOXYETIOJERVANES WITH BORON TRIFLUORIDE ETHERATE
Authors: Murai Akio , Sasamori Hiroshi , Masamune Tadashi 
Published: July 2006

Abstract
Treatment of 11α-hydroxy-, 11α-acetoxy-, and 11-oxo-17α-acetyl-12α,13α-epoxyetiojervanes (1, 1a, and 11) with boron trifluoride etherate gave mixtures of several compounds, respectively, including interesting rearranged products, e.g., compounds (12 and 13) with bicyclo[3.3.1]nonane-2,9-dione and hydrooxepin moieties.
MICROWAVE SPECTRA OF ETHYLFLUOROSILANE
Authors: Hayashi Michiro , Hikino Hiroaki , Imachi Misako 
Published: July 2006

Abstract
Microwave spectra of the trans and gauche isomers of ethylfluorosilane (CH3CH2SiH2F) were measured and the rotational constants were determined for the ground and several excited vibrational states. The dipole moments were determined by Stark effect measurements to be 1.74 ± 0.02 D for trans and 1.71 ± 0.17 D for gauche. The observed splittings of the spectra in the first excited methyl torsional state of the gauche isomer gave the methyl internal rotation barrier as 2890 ± 60 cal/mol.
HIGHLY STEREOSELECTIVE SYNTHESES OF NEROL AND GERANIOL
Authors: Takabe Kunihiko , Katagiri Takao , Tanaka Juntaro 
Published: July 2006

Abstract
A highly stereoselective synthesis of nerol (1) was accomplished using the telomerization process of isoprene. Geraniol (2) was also synthesized from myrcene (3).
ELECTRON SPIN RESONANCE STUDY OF SPIN PROBES IN FROZEN AQUEOUS SOLUTIONS. II. ICE STRUCTURE BREAKING EFFECTS OF ALKALI HYDROXIDES
Authors: Sato Eiji , Uematsu Shogo , Akahori Yukio 
Published: July 2006

Abstract
The ESR spectra of 12-nitroxide stearic acid (12-NS) in frozen aqueous solutions of LiOH, KOH, and CsOH with temperature are composed of a sharp triplet and a broad singlet, as the case of frozen aqueous solutions of NaOH. As radius of alkali metal ion becomes larger, the strength of breaking ice structure increases at frozen state. The ice-structure-breaking effects of alkali ions are Cs+&gt;K+&gt;Na+&gt;Li+ in frozen aqueous solutions.
POLYMERIZATION OF 3-VINYL-5,5-DIMETHYLHYDANTOIN IN WATER
Authors: Sashio Minoru , Hayashi Masao , Tabuchi Tateo , Tanaka Makoto 
Published: July 2006

Abstract
Polymerization of 3-vinyl-5,5-dimethylhydantoin was carried out in water. The resulting polymer was insoluble in all solvents tested, while the polymers obtained in organic solvents were soluble in N,N-dimethylformamide. Polymerizations in water containing water-soluble polymers gave the polymers in which the water-soluble polymers were entrapped.
RELATIVISTIC SELF-CONSISTENT MOLECULAR ORBITAL CALCULATION FOR UF6
Authors: Kim Bong-Il , Adachi Hirohiko , Imoto Shosuke 
Published: July 2006

Abstract
The relativistic self-consistent molecular orbital calculation was made for UF6 in the Dirac–Slater model. The one-electron energies, excitation energies and the effects of relativity are presented.
QUENCHING EFFECT OF OXIMES ON THE PHOTOLYSIS OF COPOLYMER OF STYRENE AND PHENYL VINYL KETONE
Authors: Tsunooka Masahiro , Nishino Todomu , Tanaka Makoto 
Published: July 2006

Abstract
In order to estimate the function of oximes as quenchers, their effect on the photolysis of copolymer of styrene and phenyl vinyl ketone was investigated in solution and in the solid phase. 2-Acetonaphthone oxime and benzylidene acetone oxime among the oximes examined in this paper were as effective as naphthalene, which is a well known quencher.
A NEW SYNTHESIS OF 2-(6-CARBOXYHEXYL)CYCLOPENT-2-EN-1-ONE, A PROSTANOID SYNTHON
Authors: Wada Eiji , Nakai Takeshi , Okawara Makoto 
Published: July 2006

Abstract
A new synthesis of the title compound (1), an useful intermediate in the synthesis of various prostanoids, is described which involves the acid-catalyzed cyclopropane rearrangement of 9-cyclopropyl-9-oxononanoic acid (7) as a key step. The cyclopropyl ketone 7 was prepared via the three steps from cyclopropyl methyl ketone.
IMPROVEMENT OF NLCKEL CATALYST FOR ENANTIOFACE-DIFFERENTIATING (ASYMMETRIC) HYDROGENATION OF METHYL ACETOACETATE
Authors: Harada Tadao , Onaka Shinji , Tai Akira , Izumi Yoshiharu 
Published: July 2006

Abstract
Among the factors affecting the optical yield of hydrogenation of methyl acetoacetate to optically active methyl 3-hydroxybutyrate with tartaric acid-modified nickel catalysts, the presence of aluminium or related metal compound on the catalysts was found to be the unfavorable one. The use of reduced nickel oxide instead of Raney nickel resulted in a good optical yield (maximum optical yield, 85%).
PALLADIUM(II) AND PLATINUM(II) COMPLEXES OF CIS-1,3-DIAMINOCYCLOHEXANE
Authors: Saito Reiko , Kidani Yoshinori 
Published: July 2006

Abstract
Six palladium(II) and platinum(II) complexes, [MX2(1,3-dac)] and [M(1,3-dac)2]Cl2 (M = Pd and Pt, X = Cl− and Br−) have newly been prepared (1,3-dac = cis-1,3-diaminocyclohexane). On the basis of the spectroscopic analyses, the structures of the complexes have been elucidated to be square planar. It was reasonably interpreted that interconversion of the ligand to the less stable diaxial conformer was taken place during complexation.
ROTATION OF A SPIN PROBE IN HYDRATED POLYETHYLENE GLYCOL BELOW FREEZING TEMPERATURE
Authors: Yoshioka Hisashi 
Published: July 2006

Abstract
The ESR spectra of a spin probe, 2,2,6,6-tetramethyl-4-piperidone N-oxide, in water-polyethylene glycol (PEG) systems were measured below freezing temperature. The activation energy of the rotation of the probe in the hydrated PEG was considerably large. It was explained in terms of the breaking of the hydrogen bonds of the hydration water.
SYNTHESIS OF HEPTAMETHYLTROPYLIUM PERCHLORATE FROM 1,2,3,4,5,6,7-HEPTAMETHYLTROPILIDENE
Authors: Takeuchi Ken’ichi , Yokomichi Yasunori , Okamoto Kunio 
Published: July 2006

Abstract
Heptamethyltropylium perchlorate has been synthesized via the reaction of 1,2,3,4,5,6,7-heptamethyltropilidene with phosphorus pentachloride and subsequent treatment with perchloric acid. The advantage of phosphorus pentachloride over triphenylcarbenium ion as a hydride-abstraction reagent is discussed.