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Volume 2, Issue 1
Displaying 1-25 of 25 articles from this issue
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Takeo Taguchi, Teruaki Mukaiyama1973 Volume 2 Issue 1 Pages 1-2
Published: January 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSA convenient method for the preparations of benzyl N-monoalkylcarbamates and N-benzyloxycarbonylamino acids have been established. Benzyl N-monoalkylcarbamates were obtained in good yields by the reactions of potassium salt of benzyl N-(p-chlorophenylthio)carbamate with alkyl halides and the subsequent treatment of the alkylated carbamates with p-chlorobenzenethiol.View full abstract -
Ryoji Noyori, Yoshihiro Hayakawa, Shinji Makino, Hidemasa Takaya1973 Volume 2 Issue 1 Pages 3-4
Published: January 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSA new route to 4,5-homotropones starting with 4-cycloheptenone derivatives is described.View full abstract -
Muneji Miyoshi, Hiroshi Sugano, Toshiyuki Fujii, Teruo Ishihara, Naoto ...1973 Volume 2 Issue 1 Pages 5-6
Published: January 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSTreatment of tosyl-L-homoserine lactone (I) with hydrogen bromide, followed by recyclization by the use of sodium hydride below 20°C, gave tosyl-L-azetidine-2-carboxylic acid (III). After the detosylation, the optically active azetidine-2-carboxylic acid (IV) was obtained in a good yield.View full abstract -
Tsunehiko Tarumoto, Yuroku Yamamoto1973 Volume 2 Issue 1 Pages 7-10
Published: January 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSHeats of solution of cobalt(III) acetylacetonate in alcohols and water were measured and the results were related to the number of hydroxyl groups and the cohesive energy densities of solvents. Heats of solution of the same chelats were also measured in dilute carbon tetrachloride solutions of alcohols. From the results, it was found that alcohols can exist completely as monomer at an extremely low concentration range.View full abstract -
Kazuo Tori, Tokiko Fujii, Yohko Yoshimura, Masako Ueyama1973 Volume 2 Issue 1 Pages 11-14
Published: January 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSLarge downfield shifts induced by bis(acetylacetonato)nickel(II) have been observed for the H-7 resonances in various benzazoles (II–X); these proton contact-shifts are explained in terms of the inter-ring spin delocalization through σ-skeletons in a zig-zag arrangement.View full abstract -
Isamu Shimizu, Hiroshi Kokado, Eiichi Inoue1973 Volume 2 Issue 1 Pages 15-16
Published: January 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe photo-doping length of Ag reached more than 20μm in the chalcogenide glass (As16S80Te4) when the Ag layer of 1500A in thickness on the glass was doped by exposure to light. The distribution profiles of the photo-doped Ag in the chalcogenide glass layer showed its own characteristics.View full abstract -
Shinji Onodera1973 Volume 2 Issue 1 Pages 17-20
Published: January 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe far-infrared spectra of NH4I and NH4Br have been measured at temperatures of −223 to −53 °C. The torsional vibrations of the NH4+ ions in the phase III crystalline salts were observed at 301 cm−1 for NH4I at −223 °C and at 348 cm−1 for NH4Br at −166 °C.View full abstract -
Akifumi Ueno, Yoshihide Kotera1973 Volume 2 Issue 1 Pages 21-24
Published: January 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSA new compound containing MoO3, Al2O3 and SiO2 was prepared by heating their mixture in a proper proportion at 1200°C for 12 hours. This compound was obtained in the form of small needle-like crystals, whose colour is slightly pale gray. Its composition was determined to be \frac16MoO3·Al2O3·2SiO2 by the chemical analysis. Crystallographic properties and preparative method of this compound were discussed in this report.View full abstract -
Yukito Murakami, Junzo Sunamoto, Chieko Gondo1973 Volume 2 Issue 1 Pages 25-28
Published: January 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSEnzymatic hydrolyses of 3-pyridyl, 8-quinolyl, 2-pyridylpropyl, and phenyl phosphates were studied in the presence of potato acid phosphatase at 37°C while an ionic strength of the aqueous reaction system was maintained at 0.10 with potassium chloride. The kinetic data were analyzed in terms of the Michaelis-Menten model. The hydrophobic interaction was found to prevail over the polar interaction in the ES-complex formation. A LFER trend observed in the enzymatic hydrolyses suggests that the electrostatic interaction between substrate and enzyme under hydrophobic atmosphere in the enzyme-recess contributes to the profound rate enhancement.View full abstract -
Kuninobu Kabuto, Shozo Yamaguchi1973 Volume 2 Issue 1 Pages 29-33
Published: January 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe chromic acid oxidation of 5- and 6-substituted 2-cyclohexen-1-ols was investigated. The relative rates of oxidation are reasonably interpreted by considering steric and stereoelectronic effects and also conformational equilibria.View full abstract -
Kenichiro Nakamura, Tetsuji Yamada, Kenichi Honda1973 Volume 2 Issue 1 Pages 35-38
Published: January 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe photodegradation of Polystyrenes containing sensitizers, such as aromatic nitro or quinone compounds, has been investigated. It was found that 1,4-naphthoquinone is the most effective sensitizer for the photodegradation of polystyrene among those tested in this study. The products of the light-irradiated polystyrene were examined by the IR spectroscopy and the thin layer chromatography. It is concluded that the photodegradation of the polystyrene proceeds mainly through the photo-oxidation of polymer.View full abstract -
Toru Ueno, Haruo Miya1973 Volume 2 Issue 1 Pages 39-42
Published: January 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe titled catalyst systems were found to be active and convenient for the hydrogenation of olefins and to be selective toward 1,3-COD. The catalyst was transformed to some extent during the hydrogenation of 1,3-COD: cyclooctene was formed preferentially and thereafter was hydrogenated to cyclooctane successfully.View full abstract -
Hirotoshi Sano, Michiko Akane1973 Volume 2 Issue 1 Pages 43-46
Published: January 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSMössbauer spectra of iron thiocyanate crystals prepared from iron(III) compounds show the presence of iron(II) species. It was found that some reduction of iron(III) species was taking place both in aqueous and ethereal phases.View full abstract -
Katsuhiko Miyoshi, Toshihiro Tominaga, Yuroku Yamamoto1973 Volume 2 Issue 1 Pages 47-50
Published: January 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSConductance of bis(2,9-dimethyl-1,10-phenanthroline)Cu(I) perchlorate was measured at 25°C in 1-propanol/acetone mixtures with about the same dielectric constants. The derived parameters have shown that addition of acetone to propanol decreases the ionic association of the chelate salt. This behavior can be interpreted in terms of the solvation of acetone to the chelate cation.View full abstract -
Shuntaro Mataka, J. -P. Anselme1973 Volume 2 Issue 1 Pages 51-54
Published: January 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe reaction of 1,1,4,4-tetrabenzyl-2-tetrazene with sulfuryl chloride in benzene at room temperature gave benzyl azide, dibenzylamine and benzaldehyde. In addition, another compound was isolated as a very minor product. On the basis of its elemental analysis and spectral data, this compound was assigned the structure of 5,6-diphenyl-1,4-dibenzyl-1,2,3,4-tetraaza-2-cyclohexene, the first cyclic 2-tetrazene ever reported.View full abstract -
Toshio Kawabata, Nasuo Ueda, Kiichi Takemoto1973 Volume 2 Issue 1 Pages 55-56
Published: January 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSDie purin- sowie pyrimidinbasenhaltigen Propandiole wurden mit Phenylphosphorodichloridat umgesetzt. In einigen Fällen wurden oligomere Kondensate gewonnen, die Phosphoratome in der Hauptkette und Nucleinbasen in der Seitenkette enthalten. Aus dem neu hergestellten, ein Adeninrest enthaltenden Carbonat wurde durch Umsetzung mit Phosphorsäure auch die ähnliche Oligomere erhalten.View full abstract -
Yuzo Nishida, Sigeo Kida1973 Volume 2 Issue 1 Pages 57-62
Published: January 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSESR spectra of nine Schiff base complexes of the planar cis-[CoN2O2] type were measured in host crystals of the nickel(II) homologues. The spectra showed rhombic patterns, the three eight-lined hyperfine structures due to 59Co being resolved. The theoretical discussion on these data led to the conclusion that in the ground state an unpaired electron hauses in dyz(or dxz) orbital.View full abstract -
Yuji Hayashi, Mugio Nishizawa, Takeo Sakan1973 Volume 2 Issue 1 Pages 63-66
Published: January 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSFurther investigation of Hypolepis punctata results in the isolation of a novel seco-illudane sesquiterpenoid, hypacrone, as an acrid principle of the plant. This compound is also shown to be a biological precursor of pterosins.View full abstract -
Noboru Morita, Toyonobu Asao, Nobuo Iwagame, Yoshio Kitahara1973 Volume 2 Issue 1 Pages 67-70
Published: January 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe results of the reactions of 4-isopropyl-, 3-deuterio-, and 7-deuterio-2-methoxytropones with 8-oxoheptafulvene support a mechanism of the formation of 1-oxaazulan-2-one containing cyclohexa-1,4-diene moiety at C-3 and C-4, which involves [2 + 2] cycloaddition, [1, 7] oxygen migration, [3, 3] rearrangement, and elimination of methanol.View full abstract -
Hiizu Iwamura, Hiroshi Kihara1973 Volume 2 Issue 1 Pages 71-74
Published: January 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSA symmetry-allowed concerted process is proposed by the MINDO/2 MO study for the facile rearrangement of tricyclo[3.3.0.02,6]octa-3,7-diene 1 to semibullvalene 2. The reaction path involves the cleavage of an allylic bond by twisting the molecule with C2 symmetry operation kept until the geometry corresponding to the transition state for the Cope rearrangement of 2 is obtained.View full abstract -
Hisao Nakata, Akira Tatematsu, Hideo Yoshizumi, Shinobu Naga1973 Volume 2 Issue 1 Pages 75-78
Published: January 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSBy using mass spectra of five aliphatic acid esters of methyl salicylate, the effect of vibrational degrees of freedom in the molecular ion on three consecutive fragmentations is examined. The effect was clearly observed in the second fragmentation, but the intensity ratio of ions involved in the third step is found to be essentially constant.View full abstract -
Osamu Haida, Hiroshi Suga, Syûzô Seki1973 Volume 2 Issue 1 Pages 79-82
Published: January 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThree kinds of glassy state of cyclohexene were discovered. Two of them are of crystalline phase, and were prepared in situ in calorimeter cell by different thermal treatments. These Tg values were 81 K (crystal-I) and 83 K (crystal-II), respectively. The glassy liquid was also prepared by vapor condensation method, its Tg being 78 K (DTA-value).View full abstract -
Ken Hirotsu, Akira Shimada1973 Volume 2 Issue 1 Pages 83-86
Published: January 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe crystal structure of melezitose monohydrate has been solved by a non-centrosymmetric direct method and refined to an R index of 0.068. The relative orientation of the glucose and fructose units in sucrose moiety is very similar to that found in sucrose itself. There are no intramolecular hydrogen bonds. Two bifurcated hydrogen bonds were found.View full abstract -
Kenneth T. Mcgregor, Richard P. Eckberg, William E. Hatfield1973 Volume 2 Issue 1 Pages 87-90
Published: January 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSA magnetization study on tetrakis(diethyldithiocarbamato)dicopper(II) has shown that the dimeric molecule has a triplet ground state resulting from a ferromagnetic intradimer interaction.View full abstract -
Kimiaki Yamamura, Setsuo Watarai, Toshio Kinugasa1973 Volume 2 Issue 1 Pages 91-93
Published: January 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe phenylation of some β-nitrostyrenes, such as β-nitrostyrene, α-nitrostilbene, and 1,1-diphenylnitroethylene, in the presence of palladium(II) acetate is described. The phenylation reactions were affected very strongly by the nitro group, and tend to occur on the olefinic carbon atom adjacent to that bearing the nitro group.View full abstract
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