bluuebunny/crossref_metadata_2025_split huggingface dataset:
THE CRYSTAL STRUCTURE OF PYRAZINE-2,3-DICARBOXYLIC ACID DIHYDRATE
Authors: Takusagawa Fusao , Shimada Akira 
Published: July 2006

Abstract
The crystal structure of pyrazine-2,3-dicarboxylic acid dihydrate has been determined by X-ray diffraction method. The lone pairs of N atoms in the pyrazine ring participate in H-bonds, while some lone pairs of O atoms are free from H-bonds. This fact suggests that the O–H···N bond is energetically more favored than the O–H···O bond in carboxylic acids with an aromatic six-membered ring.
THERMAL DECOMPOSITION OF 1,2-BIS(HYDROXYDIPHENYLMETHYL) COMPOUNDS
Authors: Toda Takashi , Saito Katsuhiro , Mukai Toshio 
Published: July 2006

Abstract
Thermal decomposition of 1,2-bis(hydroxydiphenylmethyl) compounds was investigated for the formation of olefins. Several examples showed that the reaction was useful for olefin synthesis; however, in some cases retro Diels–Alder and dehydration reactions took place. The reaction mechanisms for the formation of the olefins and other products were discussed.
URANYL ION-PHOTOSENSITIZED AQUATION OF HEXACYANOCOBALTATE(III) ION
Authors: Matsushima Ryoka 
Published: July 2006

Abstract
A monochromatic 436 nm irradiation of Co(CN)63− in a degassed aqueous phosphoric acid solution in the presence of the uranyl ion led to photoaquation of the complex without chemical changes in the uranyl ion, with the apparent quantum yield of 0.1, whereas direct photoaquation in the absence of the sensitizer was negligible under similar conditions. No thermal reaction was found. Stern-Volmer relationship was obtained for the quenching of the uranyl emission by the complex, with the quenching constant of 38 M−1. Energy transfer from the lowest triplet state of the uranyl ion to the lowest ligand field triplet state of the complex was likely involved.
A NEW TRICYCLOUNDECANE INTERMEDIATE IN AN ADAMANTANE REARRANGEMENT
Authors: Taka-Ishi Naotake , Inamoto Yoshiaki , Aigami Koji 
Published: July 2006

Abstract
Isolation and characterization of a true intermediate in the adamantane rearrangement was made for the first time in the case of aluminum chloride-catalyzed isoraerization of either tricyclo[5.2.2.02,6]undecane (I) or tetramethylenenorbornane (II) to 1-methyladamantane, the intermediate in either case being tricyclo(5.3.1.03,8]undecane (III) as determined by 13C nmr spectroscopy.
INTERMEDIATES ON THE TRICYCLOUNDECANE REARRANGEMENT SURFACE
Authors: F\v{a}rca\c{s}iu Malvina , Blanchard Kenneth R , Engler Edward M , Schleyer Paul vR 
Published: July 2006

Abstract
Tricyclo [5.3.1.03,8]undecane (VI) was identified as one of the several intermediates observed during the aluminum halide isomerization of 2,3-tetramethylene norbornane (III) to the methyl adamantanes (IV). Empirical force field (strain) calculations predict that many tricycloundecanes have comparable stabilities.
THE CARBOXYLATION OF ACTIVE METHYLENE COMPOUNDS WITH UREA DERIVATIVES AND CO2. A MODEL REACTION FOR THE BIOTIN-PROMOTED CARBOXYLATIONS
Authors: Otsuji Yoshio , Arakawa Munekazu , Matsumura Noboru , Haruki Eiichi 
Published: July 2006

Abstract
A variety of active methylene compounds was carboxylated by employing the reagent system, dicyclohexylcarbodiimide-tetraalkylammonium hydroxide-CO2 or lithium salts of urea derivatives-CO2 in DMF at room temperature.
TRICHLOROVANADIUM(III)-CATALYZED OXIDATION OF TRIPHENYLPHOSPHINE
Authors: Chimura Yasuo , Kanai Hiroyoshi , Yoshida Satohiro , Tarama Kimio 
Published: July 2006

Abstract
Vcl3 catalyzes the oxidation of PPh3 to OPPh3 with oxygen in CH3CN. By kinetic investigation the mechanism involving a dioxygen complex of VCl3 as an intermediate is proposed and its reactivity toward PPh3 is shown to be greater than that of Pt(PPh3)2O2.
PHOTOELECTRON SPECTROSCOPY OF CYCLOHEXANE, CYCLOPENTANE, AND SOME RELATED COMPOUNDS
Authors: Ikuta Shigeru , Yoshihara Kenji , Shiokawa Takanobu , Jinno Masafumi , Yokoyama Yu , Ikeda Shigero 
Published: July 2006

Abstract
Photoelectron spectra of cyclohexane, cyclopentane, n-hexane and n-pentane have been studied. The vibrational structures of cyclohexane parent ion were clearly observed. The vibrational spacing is about 1160 cm−1 which can be assumed due to the C–C stretching vibrations. This spectrum was compared with the breakdown curves by charge exchange.
ON THE SYNTHESIS OF MONOMERIC METHACRYLOYLAMINO DERIVATIVES OF PURINE BASES
Authors: Kondo Koichi , Hisaoka Yukiko , Takemoto Kiichi 
Published: July 2006

Abstract
Three sorts of methacryloylamino derivatives of adenine and theophylline were prepared by allowing 9-(2-aminoethyl)adenine and 7-(2-aminoethyl)theophylline to react with methacryloyl chloride in dimethylformamide-pyridine solution at room temperature. Free-radical polymerization and copolymerization of 7-(2-methacryloylaminoethyl)theophylline were studied.
EFFECT OF SOLVENTS ON SPECTRA UNDER HIGH PRESSURE. THE SOLVATOCHROMISM OF 1-ETHYL-4-CARBOMETHOXYPYRIDINIUM IODIDE (Z-VALUE)
Authors: Tamura Katsuhiro , Imoto Tatsuya 
Published: July 2006

Abstract
The charge–transfer absorption spectra of the title compound have been measured for seven solvents at 25°C over the pressure range 1–1960 kg/cm2. The effect of the solvents on the shift of λmax with pressure was remarkable in a series of alcohols. The λmax for methanol and ethanol shifted to the red, while for the other alcohols it shifted to the blue. This may be one of the interesting behavior based on the hydrogen bonding between the solute and the solvents.
MÖSSBAUER SPECTROSCOPIC STUDIES ON CRYSTALLOGRAPHIC PHASE TRANSITION IN Fe(py)2Cl2 AND α-Co(py)2Cl2
Authors: Sano Hirotoshi , Kanno Mitsuko 
Published: July 2006

Abstract
Anomalies were found in the temperature dependence of quadrupole splitting of 57Fe in Fe(py)2Cl2 and α-(57Co, Co)(py)2Cl2 at 228°K and 160°K, respectively, when these compounds were prepared by “wet method”. The X-ray powder patterns of the compounds also show slight changes at the same temperatures. It was found that the materials prepared by “dry metho” remain in the high temperature phase even below the phase transition temperature.
EFFECT OF PRESSURE ON INTERSYSTEM CROSSING OF ANTHRACENE DERIVATIVES IN SOLUTION
Authors: Tanaka Fujio , Osugi Jiro 
Published: July 2006

Abstract
The pressure dependences of the fluorescence yields for anthracene, 1-, 2-, 9-methylanthracene, 1-, 2-, and 9-chloroanthracene were obtained in n-hexane at room temperature up to 3000 kg/cm2.
Results were interpreted in terms of a change of Franck–Condon factor in the intersystem crossing rate.
STEROID BIOSYNTHESIS. RELATIVE EFFICIENCIES OF ENZYMIC TRANSFORMATION OF TERMINALLY MODIFIED SQUALENE 2,3-OXIDE ANALOGS INTO LANOSTEROL ANALOGS BY 2,3-OXIDOSQUALENE CYCLASE
Authors: Shishibori Tsuyoshi , Fukui Takashi , Suga Takayuki 
Published: July 2006

Abstract
The incubation of terminally modified squalene 2,3-oxide analogs with the enzyme preparation of hog liver yielded the corresponding lanosterol analogs, respectively, at different conversion rates. The interaction of 2,3-oxidosqualene cyclase with the substrates has thus been found to be influenced by the bulk of the terminal moiety.
STRIPPING COULOPOTENTIOGRAPHY
Authors: Fujinaga Taitiro , Okazaki Satoshi , Yamada Takeshi 
Published: July 2006

Abstract
A new electroanalytical method, for the determination of trace quantities of metal ions, has been developed by the combination of direct coulopotentiography with preliminary column electrolysis. The new method is more sensitive than the direct method; the sensitivity reaches down to 10−8M.
The present method is also applicable to the practical automated trace analysis of the flowing samples.
REACTIONS OF 2-ALKYL-2-LITHIO-1,3-DITHIANES WITH PYRIDINE
Authors: Taguchi Takeo , Nishi Mineo , Watanabe Kenzo , Mukaiyama Teruaki 
Published: July 2006

Abstract
It was found that 2-alkyl-2-(4-pyridyl)-1,3-dithiane [II] is obtained in fairly good yield by the reaction of 2-alkyl-2-lithio-1,3-dithiane with pyridine followed by the subsequent oxidation with p-benzoquinone or air. N-Acyl-1,4-dihydropyridine derivative [III] was isolated by treating the adduct [I] of 2-alkyl-2-lithio-1,3-dithiane and pyridine with acyl chloride. Further, it was found that 2,2′-dipyridyl is obtained in 74% yield by refluxing 2-benzyl-2-lithio-1,3-dithiane with excess amount of pyridine in tetrahydrofuran.
SYNTHESIS OF ALPINUM ISOFLAVONE, OSAJIN AND WARANGALONE
Authors: Jain A C , Sharma B N 
Published: July 2006

Abstract
Genistein 1 when heated with prenyl bromide in the presence of methanolic methoxide yielded 7,4′-di-O-prenyl-(2), 6,8-di-CC-prenyl-(3) and 6-C-prenyl-(4) qenisteins. Structures of these compounds were established by NMR spectra of themselves and their derivatives. Oxidative cyclisation of (4) with DDQ afforded natural alpinum isoflavone (6); whereas that of (3) gave a mixture of natural osajin (8) and warangalone (7) which were separated by chromatography and identified by mass spectra.
PHOTOLYSIS OF POLY-l-SILVER GLUTAMATE
Authors: Konishi Yosiaki , Saijo Hiroshi 
Published: July 2006

Abstract
The film of poly-l-silver glutamate was photolyzed when irradiated at wavelength 253.7 nm. With irradiation the surface of the film finally turned into a metallic mirror due to the photolytic silver. This result is interpreted by assuming the primary photochemical process associated with one electron transfer from the carboxylate ion to the adjacent silver ion.
ALKILATION OF PHENOL WITH METHANE OVER SOLID ACIDS AND BASES
Authors: Nishizaki Tadao , Tanabe Kozo 
Published: July 2006

Abstract
The alkylation over SiO2–Al2O3, SiO2–TiO2, Al2O3, MgO or MgO–Al2O3 was carried out at 400–500°C and atmospheric pressure. Though SiO2–TiO2, MgO and MgO–Al2O3 were catalytically inactive, A12O3 formed 4–8% cresols and about 1% xylenol, while SiO2–Al2O3 gave 1–3% cresols and 3.5% xylenols together with 7–14% diphenylether.
THE ESR SPECTRA OF THE NITROTROPOLONATE ANION RADICALS
Authors: Ikegami Yusaku , Seto Shuichi 
Published: July 2006

Abstract
Electrolyses of 5-nitro-, 3-nitro, and 3,5-dinitro-tropolones in N,N-dimethylformamide generated the corresponding tropolonate anion radicals. Hyperfine structures in the ESR spectra of the radicals were reasonably explained by the spin density calculations. The results for the 3-nitro- and 3,5-dinitro-tropolonates suggested that the 3-nitro groups were twisted about 40 and 55°, respectively, from the ring plane.
A MONOCYANO-EDTA COBALTATE(III) COMPLEX: Na2[Co(CN)edta]·4H2O
Authors: Maki Nobufumi 
Published: July 2006

Abstract
The preparation of a novel cyano-EDTA cobalt(III) complex, in which the edta4− ion acts as a pentadentate ligand, has successfully been accomplished by treating the monocyanoiodotetramminecobalt(III) iodide with tetrasodium ethylenediaminetetraacetate dihydrate, Na4edta·2H2O.
THE CRYSTAL STRUCTURE OP 3-HYDROXY-4-METHOXYBENZALDEHYDE (ISOVANILLIN)
Authors: Iwasaki Fujiko 
Published: July 2006

Abstract
The crystal structure of isovanillin was determined by a three-dimensional X-ray analysis. The molecules are linked by the O–H···O hydrogen bond (2.741 Å) between the hydroxyl and aldehydic groups and form a linear chain approximately perpendicular to the b axis and parallel to the (201) plane.
THE OCCURRENCE OF VOMIFOLIOL, DEHYDROVOMIFOLIOL AND DIHYDROPHASEIC ACID IN THE ROOTS OF “KIDNEY BEAN” (PHASEOLUS VULGARIS L.)
Authors: Takasugi Mitsuo , Anetai Masaki , Katsui Nobukatsu , Masamune Tadashi 
Published: July 2006

Abstract
Three abscisic acid-related compounds, vomifoliol, dehydrovomifoliol and dihydrophaseic acid, the latter two being new compounds, have been isolated from the roots of “kidney bean” and proved to possess the same absolute configuration at the carbon atom corresponding to C6 (= C1′) of abscisic acid.
FORMATION OF β,γ-UNSATURATED KETONES BY THE DEACETYLATION OF 3-(1-ALKENYL)-2,4-PENTANEDIONES CATALYZED BY METAL SALTS
Authors: Uehara Kaku , Kitamura Fujio , Tanaka Makoto 
Published: July 2006

Abstract
A general method of obtaining β,γ-unsaturated ketone was provided by the deacetylation of 3-(1-alkenyl)-2,4-pentanedione in the presence of metal acetate (M(OAc)n) or acetylacetonate (M(acac)n). Zn(OAc)2, pb(OAc)2, Cd(OAc)2, Fe(acac)3, and Zn(acac)2 were found to be effective catalysts. 4-Hepten-2-one, 4-hexen-2-one, 5-methyl-4-hexen-2-one, and 5-phenyl-4-penten-2-one were given in high yields.
PYRROLIZIDINE ALKALOIDS. SYNTHESIS AND CONFIGURATION OF FULVINIC AND CRISPATIC ACIDS
Authors: Matsumoto Takashi , Fukui Kenji , Edwards J D 
Published: July 2006

Abstract
Stereochemistry of the Reformatsky reaction of 3-phenyl-2-butanone with methyl α-bromopropionate has been studied. Subsequently, fulvinic and crispatic acids have been synthesized and their configurations have also been assigned.
A CONVENIENT METHOD FOR THE REDUCTION OF SULFIDES AND VINYLIC OR AROMATIC HALIDES BY USING TiCl4 AND LiAlH4
Authors: Mukaiyama Teruaki , Hayashi Masatoshi , Narasaka Koichi 
Published: July 2006

Abstract
Various kinds of sulfides and vinylic or aromatic halides were easily reduced by the combined use of TiCl4 and LiAlH4 to give the corresponding hydrocarbons in high yields.
FLUORESCENCE LIFETIMES AND QUANTUM YIELDS OF ACRIDINE DYES BOUND TO DNA
Authors: Kubota Yukio 
Published: July 2006

Abstract
The fluorescence lifetimes and quantum yields of various acridine dyes bound to DNA have been measured at a high ratio of DNA phosphate to dye (P/D ratio). The nature of binding sites are discussed on the basis of the values of the observed lifetimes, quantum yields, and the calculated natural lifetimes.
THE PHOTOCYCLOADDITION OF 9-CYANOPHENANTHRENE AND 9-CYANOANTHRACENE WITH VINYL ETHERS AND FURAN
Authors: Mizuno Kazuhiko , Pac Chyongjin , Sakurai Hiroshi 
Published: July 2006

Abstract
The photocycloaddition of 9-cyanophenanthrene with a vinyl ether affords a (2 + 2) cycloadduct, 1-cyano-8-alkoxy-2,3;4,5-dibenzobicyclo[4.2.0] octa-2,4-diene (I), but no 1:1-adduct can be obtained with furan, whereas irradiation of 9-cyanoanthracene in the presence of furan gives a (4 + 4) cycloadduct, 1-cyano-7,8;9,10-dibenzo-11-oxatricyclo[4.2.2.12,5] undeca-3,7,9-triene (III), but no 1:1-adduct is given by the irradiation in the presence of vinyl ethers.
ELECTRO-OPTICAL PROPERTIES OF HIGH PURITY NEMATIC LIQUID CRYSTAL UNDER VACUUM CONDITION
Authors: Nakauchi Jun , Yokoyama Masaaki , Kato Keishi , Okamoto Ken-ichi , Mikawa Hiroshi , Kusabayashi Shigekazu 
Published: July 2006

Abstract
The effects of impurities having influence on electro-optical properties of nematic liquid crystal, p-methoxybenzylidene-p′-n-butylaniline, have been investigated under d.c. excitation. For the sample prepared in vacuum, no dynamic scattering was observed but a new domain-like pattern was observed following Williams domain and once the vacuum was broken, the domain pattern changed into a wave-like pattern and dynamic scattering occurred as in the ordinary case.
SYNTHESIS OF (±) -12-HYDROXY-3-OXOTOTARA-1,8,11,13-TETRAENE A PROPOSED STRUCTURE FOR SHONANOL
Authors: Matsumoto Takashi , Tanaka Isao , Ohno Toru , Fukui Kenji 
Published: July 2006

Abstract
12-Hydroxy-3-oxototara-1 ,8,11,13-tetraene (Ia) and its cis-isomer (Ib) were synthesized from 3-isopropylanisole (II) via 5-isopropyl-7-methoxy-1-methyl-2-tetralone (XV) by the route of C→B→A ring construction. The spectral data of the synthetic Ia and Ib were different from those of natural shonanol.
DETERMINATION OF CYANO NITROGEN IN INORGANIC CYANO COMPOUNDS BY KJELDAHL METHOD
Authors: Matsumoto Yoshio , Kawashima Takeshi , Shirai Michiko 
Published: July 2006

Abstract
By retention of a high level of sulfuric acid concentration at the beginning of digestion process and use of a subsidiary decomposition-reagent, determination of inorganic cyano-nitrogen by Kjeldahl method was made possible.
ADDITION REACTION OF THIOL TO OLEFIN BY THE USE OF TiCl4
Authors: Mukaiyama Teruaki , Izawa Toshio , Saigo Kazuhiko , Takei Hisashi 
Published: July 2006

Abstract
It was established that, in the presence of TiCl4, α,β-unsaturated carbonyl compounds react with ethanethiol at room temperature to afford the addition products, 3-ethylthiocarbonyl compounds, in good yields.
SYNTHETIC STUDIES OF CARBOHYDRATE DERIVATIVES WITH PHOTOCHEMICAL REACTION. VII. PHOTOCHEMICAL ADDITION OF ETHANETHIOL AND 1-PROPANETHIOL TO ENOSES
Authors: Araki Younosuke , Matsuura Kazuo , Ishido Yoshiharu , Kushida Katsuhiko 
Published: July 2006

Abstract
Acetone-sensitized photochemical addition of ethanethiol and 1-propanethiol to 2,3,4,6-tetra-O-acetyl-2-hydroxy-d-glucal gave the corresponding α-thioglucopyranosides in 77.1% and 79.3% yields, respectively. Similar addition reactions of thiols to methyl 4,6-di-O-acetyl-2,3-dideoxy-α-d-erythro-hex-2-enopyranoside and 3,4, 6-tri-O-acetyl-d-glucal were also described.
A RELATIONSHIP BETWEEN THE COTTON EFFECT AND THE CONFORMATION OF A SEVEN-MEMBERED LACTAM RING
Authors: Ogura Haruo , Takayanagi Hiroaki , Furuhata Kimio 
Published: July 2006

Abstract
A rule about the n-π* Cotton effect of seven-membered lactam ring was investigated. From this rule, the seven-membered lactam was classified into two types A and B. Type A should have the negative and type B should have the positive Cotton effect.
ENZYMATIC SYNTHESIS OF BISHOMOFARNESYL PYROPHOSPHATE WITH THE INSECT JUVENILE HORMONE SKELETON
Authors: Koyama Tanetoshi , Ogura Kyozo , Seto Shuichi 
Published: July 2006

Abstract
trans,trans,cis-3,11-Dimethyl-7-ethyltrideca-2,6,10-trien-1-ol and its pyrophosphate whose carbon skeletons were the same as that of insect juvenile hormone were synthesized from cis-3-methylpent-2-enyl pyrophosphate, 3-ethylbut-3-enyl pyrophosphate and isopentenyl pyrophosphate by the action of farnesyl pyrophosphate synthetase.
IONIC EQUILIBRIA IN MIXED SOLVENTS. IX. THE AUTOPROTOLYSIS CONSTANTS OF MIXTURES OF WATER AND AN AMPHIPROTIC SOLVENT
Authors: Ohtaki Hitoshi 
Published: July 2006

Abstract
A thermodynamic consideration is made for the autoprotolysis constant of a mixture of water and an amphiprotic solvent on the basis of equilibria of hydronium-lyonium and hydroxyl-lyate ions. The autoprotolysis constants of various water-methanol solutions are calculated and compared with those in literature. The calculated values of autoprotolysis constants of water-ethanol and water-n-propanol solutions are presented.
THE REACTION OF DISODIUM TETRACARBONYLFERRATE(-II) WITH 1,3-DIBROMOPROPANE. THE FORMATION OF A NOVEL 2-FERRACYCLOPENTANONE COMPLEX
Authors: Watanabe Yoshihisa , Mitsudo Take-aki , Yamashita Masakazu , Tanaka Masato , Takegami Yoshinobu 
Published: July 2006

Abstract
Disodium tetracarbonylferrate reacts with 1,3-dibromopropane in the presence of phosphine to give a 2-ferracyclopentanone complex,
(Remark: Graphics omitted.)
POLAROGRAPHY OF CIS- AND TRANS-TETRACYANOCOBALTATE(III) COMPLEXES
Authors: Maki Nobufumi 
Published: July 2006

Abstract
The cis-[CoIII (CN)4, (SO3)2]5− ion in which four cyanides take a non-planar configuration was found to be reduced in two steps from Co(III) to Co(0) via the Co(I) complex, whereas the trans-[CoIII(CN)4(SO3)2]5− ion in which four cyanides take a coplanar structure is reduced to the Co(I) complex and not to Co(0) state at the dropping mercury electrode in aqueous solutions. This cis- vs. trans-distinction with regard to the stability of cobalt(I) complexes may be extended to other kinds of tetracyano complexes, such as cis-Na[Co(CN)4en]·3.5 H2O, trans-K[Co(CN)4(NH3)2]·H2O, and trans-K[Co(CN)4(OH2)2]·(3/4)H2O. The trans-tetracyanodiaqua complex was speculated to be present in a form of polymerized complexes in solution on the basis of the difference in anodic behavior between the resulting Co (I) complex and the aquated Co (I) species formed from the tetracyanodisulfito complexes.
DIELECTRIC BEHAVIOR OF PROPANOLS IN A VARIETY OF SOLVENTS
Authors: Arie Eiji , Nakamura Masahiko , Takahashi Hiroaki , Higasi Keniti 
Published: July 2006

Abstract
The origin of the principal relaxation times of alcohols is under dispute. This letter reports that the principal relaxation times of 1-and 2-propanols change with concentration in two sliglitly different manners by solvents and this difference is due to whether the solvent has the hydrogen-bonding capacity or not.
EFFECTS OF PARAMAGNETIC SHIFT REAGENTS ON THE ROTATION OF AN ISOPROPYL GROUP
Authors: Yamada Kazutoshi , Ishihara Sakiko , Iida Hirotada 
Published: July 2006

Abstract
Observed effects of shift reagents on the rotation of an isopropyl group are reported for two substrate molecules, menthol and menthone, using Eu(DPM)3. The free energies of activation ΔG≠, obtained from the rotation of the isopropyl groups in menthol- and menthone-Eu(DPM)3 complexes are described.
REACTION OF 1-ETHOXY-2,3-DI-tert-BUTYLCYCLOPROPENIUM FLUOROBORATE WITH SODIUM TETRACHIOROCYCLOPENTADIENIDE: FORMATION OF A DIHYDROPENTALENONE DERIVATIVE
Authors: Murata Ichiro , Nakasuji Kazuhiro , Kume Hirokazu 
Published: July 2006

Abstract
Reaction.of 1-ethoxy-2.3-di-tert-butylcyclopropenium fluoroborate with sodium tetrachlorocyclopentadienide in methylene chloride gives 1,2-dihydro-2,3-di-tert-butyl-4,5,6-trichloropentalen-1-one along with 1,2,3,4-tetrachloro-5,6-di-tert-butylcalicene.
EFFECT OF PRESSURE ON THE SOLVENT POLARITY PARAMETER: ET-VALUE
Authors: Tamura Katsuhiro , Ogo Yoshiaki , Imoto Tatsuya 
Published: July 2006

Abstract
Effect of pressure on the ET-values for four kinds of solvents has been investigated at 25°C over the pressure range 1 – 1960 kg/cm2. The ET-values for the solvents studied increased with pressure. Their pressure dependence was affected by the nature of solvents and the detectable differences between them existed in our pressure range. The relation of theET-values to the reaction rates under high pressure has been discussed in brief.
PHOTODEGRADATION BEHAVIOUR OF POLYISOBUTENE OXIDE FOR DISPOSABLE PLASTICS
Authors: Yamagishi Kazuo , Kikuchi Yasuo , Tanaka Kazunobu , Otomo Teruo , Watanabe Shoji 
Published: July 2006

Abstract
Thermally stable polyisobutene oxide was gradually degraded by ultraviolet light and finally converted to volatile compounds. Fundamental photodegradation chemistry of polyisobutene oxide and the possibility of it’s application for disposable plastics were discussed.
CORRELATION BETWEEN J(13C-H) IN AROMATIC METHYL COMPOUNDS AND GROUP OR ORBITAL ELECTRONEGATIVITIES
Authors: Masuda Shozo , Inamoto Naoki 
Published: July 2006

Abstract
The linear correlations of J(13C-H) with group electronegativities (EPhY-) and with orbital electronegativities (XYV) have been presented for 11 aromatic methyl compounds (Ph-Y-CH3) and a new correlation between J(13C-H) and Gordy’s effective nuclear charge (1+n*) was found.
PHOTOAQUATION OF CIS-DIBROMOTETRAAMMINERUTHENIUM (III) COMPLEX
Authors: Ohyoshi Akira , Takebayashi Noriyuki , Hiroshima Yutaka 
Published: July 2006

Abstract
Studies have been made on the photochemistry of aqueous cis-Ru(NH3)4 Br22+. In a solution of pH lower than 2.5, following simple aquation seems to occur; cis-[Ru(NH3)4Br2]+ + H2O →cis-[Ru(NH3)4BrH2O]2+ + Br−. The quantum yield was found to depend on the wavelength of light, but not on the bromide-ion and hydrogen-ion concentrations. The typical, value was respectively 5.6×10−3, 2.7×10−3, and 1.4×10−3 at the irradiation of 330, 382, and 434 nm light.
OBSERVATIONS OF RAINBOW SCATTERING IN CROSSED MOLECULAR BEAMS: K + COS AND K + CS2
Authors: Kusunoki Isao , Mitou Yutaka , Kodera Kumasaburo 
Published: July 2006

Abstract
Differential elastic scattering cross sections have been measured for the systems K + COS and CS2 at different energies in the thermal energy range. The intermolecular potential well depths have been evaluated from the rainbow scattering. The evaluated values ε for the Lennard–Jones(12,6) potentials were 0.37 Kcal/mole for K + COS and 0.41 Kcal/mole for K + CS2, respectively.
SIMPLE SYNTHESIS OF JASMONES THE METAL ION PROMOTED REACTIONS OF 8-ACYLOXYQUINOLINE. II
Authors: Sakan Takeo , Mori Yutaka , Yamazaki Tomio 
Published: July 2006

Abstract
The known diketones, undecane-2,5-dione and cis-undec-8-ene-2,5-dione, are obtained by the reactions of 8-levulinyloxyquinoline with n-hexyl- and cis-3-hexenylmagnesium bromide, respectively, and converted to jasmones by base-catalyzed cyclization.