bluuebunny/crossref_metadata_2025_split huggingface dataset:
THERMAL SOLID-SOLID PHASE TRANSITION OF SOME METAL OXALATO COMPLEXES
Authors: Nagase Kenzo 
Published: July 2006

Abstract
Data were presented to show that anhydrous potassium trioxalatoaluminate(III), potassium trioxalatovanadate(III) and potassium trioxalatochromate(III) exhibit thermally solid-state transition to hexagonal without any decomposition. The values of enthalpy change were 0.9 and 1.3 kcal/mol for K3[Al(ox)3] and K3[Cr(ox)3], respectively.
A TOTAL SYNTHESIS OF COENZYME A BY OXIDATION-REDUCTION CONDENSATION
Authors: Hashimoto Mitsunori , Mukaiyama Teruaki 
Published: July 2006

Abstract
A total synthesis of coenzyme A by utilization of the oxidation-reduction condensation in each important steps is described. Adenosine 2′ ,3′ -cyclic phosphate 5′ -phosphoromorpholidate and pantethine, important intermediates of coenzyme A, were prepared starting from adenosine 2′ (3′-) phosphate and pantothenoic acid in 60% and 80% yields, respectively, mainly by the use of triphenylphosphine and 2,2′ -dipyridyl disulfide as coupling reagents.
CYCLIZATION OF S-BLOCKED ISOTHIOSEMICARBAZONES. I. A NEW ROUTE TO 2-MERCAPTOIMIDAZOLE DERIVATIVES AND 4(5)-SUBSTITUTED IMIDAZOLES
Authors: Yamazaki Chiji , Taira Seizo , Okawa Tomoko 
Published: July 2006

Abstract
Condensation of an aromatic aldehyde or ketone S-methyl-, allyl-, or benzylisothiosemicarbazone with acetonyl or a phenacyl bromide yielded 1-arylideneamino-2-methylthio-, allylthio-, or benzylthio-4-aryl- or methyl-imidazoles in moderate yields. Treatment of these imidazoles with zinc/acetic acid in the presence of acetic anhydride afforded 1-acetyl-4-substituted imidazoles. Hydrolysis of the arylideneamino linkage succeeded only with the α-methyl-p-methoxybenzylideneamino compound.
1β,10β-EPOXYFURANOEREMOPHILAN-6β-OL, A NEW FURANQSESQUITERPENE FROM LIGULARIA FISCHERI TURCZ.
Authors: Moriyama Yoshihiko , Sato Toshichika , Nagano Hajime , Tanahashi Yoshiaki , Takahashi Takeyoshi 
Published: July 2006

Abstract
A new sesquiterpene isolated from Ligularia Fischeri Turcz. (collected at Hakusan) has been shown to be 1β,10β-epoxyfuranoeremophilan- 6β-ol(I).
THE NITROGEN–NITROGEN BOND CLEAVAGE OF 1,3,4-TEIADIAZOLO[3,2-a]PYRIMIDINES TO 2-THIOCYANATOPYRIMIDINES
Authors: Tsuji Tadakazu , Kamo Yasuko 
Published: July 2006

Abstract
Treatment of 7-methyl-5H-1,3,4-thiadiazolo[3,2-a]pyrimidin-5-one with aq. NaOH solution gave 4-methyl-2-thiocyanato-6(1H)-pyrimidone. In a similar manner, two thiadiazolopyrimidines prepared by the Vilsmeier–Haack reaction of 1,4,6-triamino-2(1H)-pyrimidinethione, were converted into 2-thiocyanatopyrimidines.
MECHANISM OF VOGES–PROSKAUER REACTION
Authors: Nishimura Tamio , Toku Hiroshige , Ueno Tetsuro , Shibamoto Shinji , Imai Toshio 
Published: July 2006

Abstract
Presumable intermediates of pigments formed by the Voges–Proskauer reaction were synthesized from 1-methyl-1-benzylguanidine and acetylbenzoyl and the mechanism of this color reaction was proposed.
CHARGE CARRIER GENERATION IN AURAMINE THIN FILM UNDER ILLUMINATION
Authors: Shimoda Haruhisa , Sukigara Mitsunori , Honda Kenichi 
Published: July 2006

Abstract
The current-voltage characteristics, activation energies of dark-conduction and photoconduction and light intensity dependence of photocurrent of Al-auramine hydrochloride-n-type SnO2 sandwich cell were measured. It was suggested that charge carriers of photocurrent were generated by electric field assisted ionization of excited molecules.
A NEW METHOD OF ASSAYING THE ENZYME ACTIVITY USING THE ENZYME FUEL CELL
Authors: Kimura Keisaku , Inokuchi Hiroo , Yagi Tatsuhiko 
Published: July 2006

Abstract
A new assay method for the enzyme, hydrogenase, has been proposed in which the enzyme activity is expressed as a current density of a fuel cell composed of a hydrogen half-cell (anode) containing H2–H+-hydrogenase system and a saturated calomel electrode (cathode). The principle of the assay method is based on the fact that the short-circuit current density of the cell is proportional to the activity of the enzyme contained in the anode half-cell. The new method may be applied to any oxidoreductase, if properly modified.
NITROBENZENE SOLVATE OF TRIS(1,10-PHENANTHROLINE)IRON(II) IODIDE
Authors: Iwamoto Etsuro , Tarumoto Tsunehiko , Tarui Takao , Yamamoto Yuroku 
Published: July 2006

Abstract
Nitrobenzene solvated tris(1,10-phenanthroline)iron(II) iodide was isolated out of nitrobenzene-saturated water. The amount of nitrobenzene was determined by spectrophotometry in the U.V. region. Other facts supporting the solvate formation are also presented.
STRUCTURES OF NAGILACTONE E AND F, AND BIOLOGICAL ACTIVITY OF NAGILACTONES AS PLANT GROWTH REGULATOR
Authors: Hayashi Yuji , Yokoi Junji , Watanabe Yoshihide , Sakan Takeo , Masuda Yoshio , Yamamoto Ryoichi 
Published: July 2006

Abstract
The structures of two new norditerpenoid dilactones, nagilactone E and F, are proposed. A dual biological activity of nagilactones (inhibitory and promotive) for plant growth is also reported.
UMSETZUNGEN DER UNGESÄTTIGTEN CARBONSÄUREN MIT HARNSTOFF UND THIOHARNSTOFF IN WÄSSRIGER PHOSPHORSÄURE
Authors: Takemoto Kiichi , Tahara Hideyuki , Inaki Yoshiaki , Ueda Nasuo 
Published: July 2006

Abstract
Die Reaktion von Maleinsäure mit Harnstoff sowie Thioharnstoff wurde in wäßtriger Phosphorsäure bzw. Pyrophosphorsäure unternommen. In jenem Fall wurde Fumarsäuremonoureid, und in diesem Fall wurde 5-Carboxymethyl-thiazolidin-2,4-dion gewonnen. Die Umsetzungen der ungesättigten Monocarbonsäuren mit Harnstoff und Thioharnstoff respektiv zu Dihydrouracil- und Thiazandionderivaten wurden auch versucht.
ENAMINES. VII(1). THE REACTION OF ENAMINES WITH SCHIFF BASES. A POSSIBLE CYCLOADDITION PATHWAY
Authors: Nomura Yujiro , Tomoda Shuji , Takeuchi Yoshito 
Published: July 2006

Abstract
The reaction of cyclohexanone enamines with benzylidenaniline in acetic acid gave unexpected N-phenyldecahydroacridine derivatives. The formation of these compounds can be rationalized assuming the [2+2]cycloaddition between enamines and the Schiff base to form an azetidine at the initial stage.
THE ELECTRONIC STRUCTURE OF THE CONJUGATE BASE OF 2-NAPHTHOIC ACID
Authors: Hoshi Tosbihiko , Yoshino Junko , Toma Hitoshi , Ota Kazuo 
Published: July 2006

Abstract
The polarized absorption spectrum of the conjugate base of 2-naphthoic acid was measured in a stretched PVA sheet. By comparing the polarized absorption spectrum with the results of the PPP calculations including a VESCF and variable β methods, we discussed the electronic structure of the conjugate base.
Ultraviolet and Charge-Transfer Spectra of Benzylsilanes
Authors: Sakurai Hideki , Kira Mitsuo , Ochiai Mitsuru 
Published: July 2006

Abstract
The frequencies of low-energy charge-transfer bands (CT-II) of 14 benzylsilane–tetracyanoethylene complexes were correlated with σI constants of substituents on silicon. The CT-II frequencies of benzylsilanes and other related compounds were also linearly related to their 1La absorption frequencies, a σ-π conjugation mechanism being discussed.
A New Ternary Compound in Rare Earth-Cobalt-Boron System
Authors: Niihara Koichi , Yajima Seishi 
Published: July 2006

Abstract
A new ternary boride RCo12B6 with a rhombohedral structure was synthesized by arc-melting in R-Co-B system, where R is a rare earth ion. From magnetic measurements, it was found that CeCo12B6 had a Curie temperature at 130°–140°K and exhibited a Curie–Weiss behavior in the paramagnetic region above 140°K.
PHOTOCHEMICAL REACTIONS OF 1,2-DITHIOLE-3-THIONES AND RELATED COMPOUNDS WITH OLEFINS
Authors: Okazaki Renji , Ishii Fumio , Ozawa Kenji , Inamoto Naoki 
Published: July 2006

Abstract
Photochemical reactions of 5-phenyl- and 4-,5-diphenyl-3H-1,2-dithiole-3-thiones with olefins gave 2-thiobenzoylmethylene-1,3-dithiolanes. Ethylenetrithiocarbonate, 2H-1,3-dithiole-2-thione or 3H-1,2-dithiole-3-one did not react with cyclohexene under the same condition, but the first compound gave 7,8-tetramethylene-1,4-,6,9-tetrathia-spiro [4.4] nonane by irradiation with low-pressure mercury lamp.
THE NEW TRIPLET-STATE DIMERS FORMED BY MIXING BIS(N-ALKYLSALICYLALDIMINATO)COPPER(II) WITH CERTAIN BIS (β-DIKETONATO) COPPER(II) COMPLEXES IN TOLUENE
Authors: Yokoi Hiroshi 
Published: July 2006

Abstract
ESR experiments have revealed that bis(N-alkylsalicylaldiminato)copper(II) forms a new kind of triplet-state dimer in toluene with certain bis (β-diketonato) copper (II) complexes such as bis (hexafluoroacetylacetonato) copper(II), bis(1,1,1-trifluoroacetylacetonato) copper(II), etc.
CYCLIZATION OF POLYENES X. BIOGENETIC TYPE SYNTHESIS OF dl-TAONDIOL
Authors: Kumanireng Antonius S , Kato Tadahiro , Kitahara Yoshio 
Published: July 2006

Abstract
Based on biogenetical consideration taondiol (III) was synthesized upon treatments of epoxide (II) with picric acid, followed by hydrochloric acid. From the cyclized mixture, III was isolated in 2% yield.
MICRO-CALORIMETRIC DETERMINATION OF THE DISTRIBUTION OF ACID STRENGTH ON SILICA-ALUMINA CATALYST
Authors: Yoshizumi Haruo , Shimada Yoshifusa , Shirasaki Takayasu 
Published: July 2006

Abstract
The distribution of the acid strength on silica-alumina catalyst was expressed quantitatively on a scale of the differential heat of adsorption of n-butylamine which was determined by calorimetric method. The method will be expected as the fundamental method for determining the distribution of acid strength on solid acid catalyst.
THE X-RAY STUDY ON THE LOW- AND ROOM-TEMPERATURE FORMS OF HEXACHLOROFULVENE
Authors: Mano Koichi , Takusagawa Fusao , Hinamoto Masayuki , Kushi Yoshihiko 
Published: July 2006

Abstract
The X-ray analysis of hexachlorofulvene was undertaken at −130 °C and 20°C. The structure of the low-temperature form is in an ordered state and that of the room-temperature form is of a disorder-type. A disorder-model, in terms of the statistical mixture of four molecular orientations, was tentatively proposed.
DEPENDENCE OF RAMAN INTENSITIES OF PYRROLE, FURAN AND THIOPHENE UPON EXCITATION WAVELENGTH
Authors: Takamizawa Shoichi , Ito Mitsuo 
Published: July 2006

Abstract
The intensities of some totally symmetric Raman lines of pyrrole, furan and thiophene have been measured with 5145 A and 3371 A excitations. The Raman lines due to the stretching vibrations of two equivalent C–C bonds of the ring having greater double bond characters showed greater wavelength dependence of the intensities. The intermediate states mainly responsible to these Raman lines are low lying π, π* electronic excited states. The results support the theoretical prediction about connection between the vibrational mode of the Raman line and the molecular geometry in the electronic excited state.
EFFECT OF BORON TRIFLUORIDE ETHERATE ON THE PHOTOREARRANGEMENT OF N-BENZYLANILINES
Authors: Furukawa Junji , Omura Kanji 
Published: July 2006

Abstract
Irradiation of N-benzylanilines complexed with boron trifluoride (BF3) results in the preferential formation of o-benzylanilines. With optically active N-α-phenethylaniline, increased retention of optical activity in the ortho migrated product was observed as compared to that found in the absence of boron trifluoride etherate (BF3–Et2O).
STEROID BIOSYNTHESIS. THE ABSOLUTE CONFIGURATION OF THE ENZYMATICALLY ACTIVE ENANTIOMER OF 2,3-OXIDOSQUALENE PARTICIPATING IN ITS CYCLIZATION TO LANOSTEROL
Authors: Shishibori Tsuyoshi , Fukui Takashi , Suga Takayuki 
Published: July 2006

Abstract
The absolute configuration of the enzymatically active enantiomer of 2,3-oxidosqualene participating in its enzymatic cyclization to lanosterol has been first established experimentally to be 3S on the basis of circular dichroism measurements of a Eu(DPM)3 complex of (+)-2,3-dihydroxysqualene derived from the recovered oxidosqualene unchanged.
A CONVENIENT SYNTHESIS OF α-BROMOKETONES FROM VINYLOXYBORANES OBTAINED BY THE REACTION OF ORGANOBORANES WITH α, β-UNSATURATED KETONES
Authors: Miyaura Norio , Harada Masahiro , Itoh Mitsuomi , Suzuki Akira 
Published: July 2006

Abstract
Free-radical addition reaction of organoboranes to α, β-unsaturated ketones forms corresponding vinyloxyboranes (3) as the intermediate. Methanolysis of the dibromoderivatives which should be obtained by bromination of the initially formed vinyloxyboranes provides a convenient one-step synthetic procedure of α-bromoketones from organoboranes in good yields.
FRACTIONAL CRYSTALLIZATION OF A DIASTEREOMERIC DIPEPTIDE
Authors: Katakai Ryoichi , Hoshino Kin-ichiro , Oya Masanao , Toda Fujio , Uno Keikichi , Iwakura Yoshio 
Published: July 2006

Abstract
A successful fractional crystallization has been achieved on a diastereo-meric dipeptide, Dl-valyl-l-histidine to the d-l and l-l isomers. Resolution to the isomers with full optical activity is almost quantitative. Characterization of the dipeptide system by thin layer chromatography is also reported.
THE SECONDARY STRUCTURE AND MOLECULAR CHAIN ORIENTATION OF POLY-γ-METHYL-d-GLUTAMATE CAST FROM SOLUTION IN DICHLOROACETIC ACID
Authors: Kajiyama Tisato , Tanaka Masatoshi , Kuroishi Masayuki , Takayanagi Motowo 
Published: July 2006

Abstract
The β-form, which is completely free from other secondary structures, has been newly observed in the case of the solid poly-γ-methyl-d-glutamate film cast from solution in dichloroacetic acid. The a-and c-axes lie on the plane parallel to the film surface and the molecules are packed parallel with a helical twist relative to one another about the b-axis which is perpendicular to the film surface. When the solid film is stretched, the c-axis orients along the drawing direction by rotating about the b-axis, showing double orientation.
MOLECULAR DESIGN BY CYCLOADDITION REACTIONS. XI. CYCLOADDITION OF TROPONE AND DIPHENYLFULVENE
Authors: Sasaki Tadashi , Kanematsu Ken , Kataoka Takahiro 
Published: July 2006

Abstract
Cycloaddition reaction of tropone and 6,6-diphenylfulvene gave only 1:1 adduct in 60% yield. The structure of the adduct was established by spectral data and by chemical conversions. Mechanism for the formation of the [4+2]adduct is discussed.
VITAMIN-SENSITIVE ELECTRODES WITH A LIQUID MEMBRANE
Authors: Ishibashi Nobuhiko , Kina Kenyu , Maekawa Nobuko 
Published: July 2006

Abstract
Ion-selective electrode membranes responsive to vitamin B1 and vitamin B6 were prepared by using ion-association extraction systems. The liquid membrane electrodes exhibit appropriate Nernstian responses to vitamin B1 and vitamin B6 ions down to 105− M. High selectivities for vitamin B1 and vitamin B6 over Na+, NH4+, and K+ were observed.
THE MOLECULAR STRUCTURE AND THE ABSOLUTE CONFIGURATION OF 8,5′-ANHYDRO-7-BROMO-8-HYDROXY-2′,3′-O-ISOPROPYLIDENETUBERCIDIN
Authors: Asahi Ken-ichi , Anzai Kentaro , Suzuki Saburo , Iwasaki Hitoshi 
Published: July 2006

Abstract
The molecular structure of the title compound has been determined by X-ray diffraction methods. The conformation in ribose ring moiety differs from those in adenosine and tubercidin. Bridging oxygen atom is in the side of 2′ - and 3′-hydrogen atoms, and not in the side of sugar lactol oxygen atom.
THE EFFECT OF WEAK MOLECULAR INTERACTIONS ON SELECTIVE FORMATION OF UNSYMMETRICAL BISSULFIDES
Authors: Endo Tadashi , Sato Toshio , Sato Shigeru , Mukaiyama Teruaki 
Published: July 2006

Abstract
As part of a continuing study on synthetic control, some investigations are made on the effect of two factors, the number of CH2 groups (m and n) and changes in weak molecular interactions between a pair of model compounds (1 and 2), on the selective formation of an unsymmetrical bissulfide (4).
SMALL RING COMPOUNDS. IV. ANODIC OXIDATION OF CARBETHOXYCYCLOPROPANECARBOXYLIC ACIDS
Authors: Kimura Koji , Horie Shinji , Minato Ichiro , Odaira Yoshinobu 
Published: July 2006

Abstract
The substituent effect on the stability of a cyclopropyl radical generated by anodic oxidation of carbethoxycyclopropanecarboxylic acids is discussed, and then some synthetic applications of the cyclopropyl radical are demonstrated.
THE AMIDE-CLAISEN REARRANGEMENT. III. THE THERMAL REARRANGEMENT OF N-ALLYL-N-TOSYLANILINE
Authors: Inada Seisaku , Ikado Syuhei , Okazaki Mitsuo 
Published: July 2006

Abstract
The use of a small amount of triphenylphosphine in the thermal rearrangement of N-allyl-N-tosylaniline to 2-allyl-N-tosylaniline in N,N-dibutylaniline depressed, to a great extent, the decomposition of the reaction mixture. The sum of the yields of rearrangement products, which were 2-allyl- and 2-(trans-1-propenyl)-N-tosylaniline, and 2-methyl-1-tosylindoline, reached to 85%.
ESR STUDIES OF γ-IRRADIATED SOLID CYCLOPENTANONE
Authors: Katayama Meiseki , Katayama Akiko , Itoh Hiroyuki , Shimada Ryoichi , Sumiyoshi Takashi 
Published: July 2006

Abstract
The γ-irradiated 3,3,4,4-cyclopentanone-d4 was studied at low temperatures by means of ESR. The analysis of spectra and INDO calculations have indicated the presence of the anion radical.
DEAQUATION-ANATION REACTION OF AQUOPENTAAMMINERUTHENIUM(III) COMPLEXES
Authors: Ohyoshi Akira , Hiraki Shunichi , Odate Tomio , Kohata Susumu 
Published: July 2006

Abstract
The deaquation-anation reaction of [Ru(H2O)(NH3)5]X3 type complexes in solid state, as shown by the equation, [Ru(H2O)(NH5)3]X5 (s) → [RuX(NH3)5]X2 (s) + H2O (g), where X=NO3 and Br was investigated by means of the differential thermal analysis (DTA) and of the thermogravimetry (TG). The activation energies in the deaquation-anation processes of the nitrate and bromide were calculated as 17.5 and 23.0 kcal/mol by the isothermal rate study, and as 19.0 and 26.8 kcal/mol by the Freeman–Carroll analysis.
CHEMICAL REACTIONS OF ELECTRON DONOR-ACCEPTOR SYSTEMS: THERMAL [2+2] CYCLOADDITION REACTION OF VINYLFERROCENE WITH TETRACYANOETHYLENE
Authors: Shirota Yasuhiko , Yoshida Kazuo , Nogami Takashi , Mikawa Hiroshi 
Published: July 2006

Abstract
The thermal [2+2] cycloaddition reaction of vinylferrocene with tetracyanoethylene was found to occur under very mild reaction conditions in a non-polar solvent or even in solid states. Stabilization of the α-ferrocenyl carbonium ion in the zwitterionic intermediate or the transition state of that character is suggested to contribute to the facilitation of the reaction.
POLYMORPHOUS FORMS OF Sb2O3 FORMED BY THERMAL DECOMPOSITION OF Sb8O11Cl2
Authors: Matsuzaki Ryoko , Sofue Atsuko , Saeki Yuzo 
Published: July 2006

Abstract
The modification of Sb2O3 formed by the thermal decomposition of Sb8O11Cl2 varied with the method of preparing Sb8O11Cl2. Cubic Sb2O3 was obtained by the thermal decomposition of Sb8O11Cl2, which was prepared by decomposing Sb4O5Cl2, below 560°C.
SYNTHESIS AND SOME REACTIONS OF DITHIOBIS(CARBONYL CHLORIDE)
Authors: Kobayashi Norio , Osawa Akiko , Fujisawa Tamotsu 
Published: July 2006

Abstract
Dithiobis(carbonyl chloride) (I) was synthesized for the first time by the hydrolysis of bis(trichloromethyl) disulfide in concentrated sulfuric acid. Treatment of I with amines and phenels gave bis(carhamoyl) disulfides (III) and bis(oxycarbonyl) disulfides (IV), respectively.
THE MOLECULAR STRUCTURE OF CYCLOCHLOROTINE, A TOXIC CHLORINE-CONTAINING CYCLIC PENTAPEPTIDE
Authors: Yoshioka Hiroshi , Nakatsu Kazumi , Sato Motomu , Tatsuno Takashi 
Published: July 2006

Abstract
The molecular structure of the title oligopeptide has been determined by X-ray diffraction methods. The dihydrate crystals contain two independent molecules in the unit cell, and they have a quite similar conformation. The configuration of the two chlorine atoms around the Cβ–Cγ bond of the pyrrolidine ring is nearly gauche. Each molecule contains a β-loop of α-U-folding type.
CHEMICALLY INDUCED DYNAMIC NUCLEAR POLARIZATION IN THE CYCLOADDITION REACTION OF DISPIRO[2.2.2.2]DECA-4,9-DIENE WITH DIMETHYL TRANS,TRANS-MUCONATE
Authors: Tsuji Takashi , Nishida Shinya 
Published: July 2006

Abstract
The cycloadducts of dispiro[2.2.2.2]deca-4,9-diene I to dimethyl trans,trans-muconate II formed by way of the singlet diradical Intermediate exhibited CIDNP signals In spite of the absence of diffusive separation of the correlated radicals.
STRUCTURE AND ABSOLUTE CONFIGURATION OF (+)546-CIS(O)-(SARCOSINATE-N-MONOPROPIONATO)TRIAMMINECOBALT(III) ION
Authors: Okamoto Ken-ichi , Tsukihara Tomitake , Hidaka Jinsai , Shimura Yoichi 
Published: July 2006

Abstract
The absolute configuration of (+)546-cis(O)-( sarcosinate-N-monopropionato)triamminecobalt(III) ion was determined by X-ray diffraction study of its (+)546-(ethylenediaminetetraacetato)cobaltate(III) salt monohydrate. The asymmetric nitrogen atom of the tridentate sarcosinate-N-monopropionate ligand coordinated takes an R configuration. The (+)546-ethylenediaminetetraacetato)-cobaltate(III) ion has Δ configuration.
OXIDATION OF OLEFINS BY MANGANESE(III) ACETATE IN A PROPIONIC ACID SOLVENT. FORMATION OF PROPIONIC ACID DERIVATIVES
Authors: Okano Masayoshi 
Published: July 2006

Abstract
Oxidation of olefins by manganese(III) acetate was carried out using propionic acid as a solvent. The oxidation products obtained were propionic acid derivatives such as 2-methyl-4-propanoyloxyalkanoic acids, γ-lactones, alkanoic or alkenoic acids and propanoyloxyalkenes. Of these products, 2-methyl-4-propanoyloxyalkanoic acids underwent thermal cracking with ease to decompose into corresponding γ-lactones and propionic acid.
STUDIES OF POLYAZAPENTALENES. III. ELECTROPHILIC REACTIONS OF 8-SUBSTITUTED DIBENZO[b,e]-1,3a,6a-TRIAZAPENTALENE
Authors: Tsuge Otohiko , Samura Hideo 
Published: July 2006

Abstract
It has been found that the substitution occurs at 7-position of 8-substituted dibenzo-1,3a,6a-triazapentalene in the electrophilic reactions. This is compatible with the results of HMO and SCF-MO calculations.
THE DISTRIBUTION OF SULFER COMPOUND ON PALLADIUM BLACK AND ITS CATALYTIC POISONING EFFECT
Authors: Kitayama Yoshie , Hayakawa Masao 
Published: July 2006

Abstract
The difference of the selectivity between poisoned by ethylsulfide and non-poisoned Pd-black was observed in the catalytic hydrogenation of isoprene. To obtain the information of the poisoning state, electron microprobe X-ray analysis method was applied. According to the S-Kα radiation profile, ethylsulfide was distributed uniformly on the surface.
REACTIVITIES OF ARYL RADICALS IN HYDROGEN ABSTRACTION AND ADDITION
Authors: Takayama Kiyoshige , Kosugi Masanori , Migita Toshihiko 
Published: July 2006

Abstract
Relative reactivities of aryl radicals in hydrogen abstraction from negatively substituted aliphatic hydrocarbons and addition reaction to the double bonds of allyl compounds were estimated.
ELECTRODEPOSITION OF ALUMINUM FROM THE SOLUTION SYSTEMS OF ANILINE AND ITS SEVERAL DERIVATIVES
Authors: Hisano Takeo , Terazawa Toshio , Matsui Hiroshi 
Published: July 2006

Abstract
Aniline and its several derivatives, belonging to primary, secondary, or tertiary amines, are shown to be the effective solvents of aluminum bromide for the electrodeposition of metallic aluminum. The secondary and tertiary amine systems showed an intricate conductometric behavior in the dilute region of aluminum bromide. The correspondence of behavior between electrodeposition and conductivity was observed.