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Volume 3, Issue 2
Displaying 1-32 of 32 articles from this issue
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Hiroshi Ogino, Toshiyuki Watanabe, Nobuyuki Tanaka1974 Volume 3 Issue 2 Pages 91-94
Published: February 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe equilibrium constant, K, and the rate constants for the reaction,
Credta(H2O)−+OAc− (Remark: Graphics omitted.) Cr(OAc)edta2−+H2O
were determined spectrophotometrically to be 0.61 M−1 for K, 8.7 M−1 s−1 for kf and 14 s−1 for kb at ionic strength 1.0 (NaClO4) and 25 °C.View full abstract -
Akira Sugimoto, Tadaaki Aoki, Hiroo Inoue, Eiji Imoto1974 Volume 3 Issue 2 Pages 95-96
Published: February 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESS1,5-Diacetylanthracene shows the anomalous photocurrent in the threshold region of the absorption spectrum when the evaporated film of 1,5-diacetylanthracene is irradiated with monochromatic light at various wavelengths under a nitrogen atmosphere.View full abstract -
Akihiko Ueno, Fujio Toda, Yoshio Iwakura1974 Volume 3 Issue 2 Pages 97-100
Published: February 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe orientation of benzophenone groups in the side chain of poly-γ-p-benzoylbenzyl-L-glutamate (PBBLG) has been studied together with its conformation by infrared, circular dichroism and ultraviolet spectra. The results suggest that the benzophenone groups in the side chain of α-helical PBBLG are more rigidly orientated in hexafluoroisopropanol (HFIP) than in dichloroethane (DCE).View full abstract -
Yasuji Harigaya, Tamotsu Yamamoto, Makoto Okawara1974 Volume 3 Issue 2 Pages 101-102
Published: February 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe reaction of dimethylsulfonium phenacylide 1 with malononitrile gave C-phenacylated compound. The reaction of 1 with acetylacetone or ethyl acetoacetate led to dihydrofuran derivatives via O-phenacylation followed by cyclization.View full abstract -
Hiromichi Okamura, Eiichi Miki, Kunihiko Mizumachi, Tatsujiro Ishimori1974 Volume 3 Issue 2 Pages 103-106
Published: February 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSOrange and yellow complex salts were prepared by a reaction of black-[Co(NO)(NH3)5]Cl2 with an aqueous solution of potassium cyanide. On the basis of IR and Raman spectra of the complexes and of their decomposition products, they are considered to be dimeric, bridged with a trans-hyponitrito group, and formulated as K6[CO2(CN)10(N2O2)]·nH2O(n = 2 and 4 for the orange and yellow salts, respectively).View full abstract -
Yasuo Takeda, Masahiko Shimada, Fumikazu Kanamaru, Mitsue Koizumi, Nao ...1974 Volume 3 Issue 2 Pages 107-108
Published: February 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSSingle crystals of BaNiO3(2H) were prepared under oxygen pressure of 2000 bars. They have a hexagonal unit cell with dimensions a=5.63±0.01, c=4.81±0.01Å. The space group is P\bar62C, P63mc or P63/mmc. its magnetic susceptibility is almost temperature-independent down to 4.2K, showing BaNiO3 to be diamagnetic.View full abstract -
Eric Brown, André Bourgouin1974 Volume 3 Issue 2 Pages 109-112
Published: February 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSHydrolysis of the bis-lactonic alkaloid carpaine 1 is known to yield all-cis 6-(7-carboxy hept-1-yl) 2-methyl piperidin-3-ol 2 (carpamic acid). The first recorded total synthesis is described of (dl)-carpamic acid in five steps, starting from the known β-keto ester Me2C=CH–CH2–CH2–CO–CH2COOEt.View full abstract -
Otohiko Tsuge, Michihiko Noguchi1974 Volume 3 Issue 2 Pages 113-116
Published: February 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSNew cyclic α-ketosulfenes 2 and 8 were generated in situ from the treatment of 2-chlorosulfonyl-1-tetralone (1) and -1-indanone (7) with NEt3. It was found that these two α-ketosulfenes show different characteristics in their dimerization and cycloaddition reactions.View full abstract -
Shô Itô, Mitsuyoshi Yatagai, Katsuya Endo, Yasutsugu Ueda1974 Volume 3 Issue 2 Pages 117-120
Published: February 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSDehydrogenation of thujopsene and widdrol revealed extensive skeletal rearrangement. The reaction pathway was established by the isolation and dehydrogenation of the stable intermediates.View full abstract -
Tetsuo Aida, Naomichi Furukawa, Shigeru Oae1974 Volume 3 Issue 2 Pages 121-124
Published: February 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSAlkyl phenyl N-p-tosylsulfilimine and phosphine react with various alcohols affording the phosphinimine(II) and the complex(IV) together with the reduced and alkyl-exchanged sulfides in which the alkyl groups come from the alcohols used. The results indicate the initial formation of a 1,3-dipole.View full abstract -
Mitsuo Namiki, Midori Yano, Tateki Hayashi1974 Volume 3 Issue 2 Pages 125-128
Published: February 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSA short time heating of the reaction mixture of dehydroascorbic acid and amino acid was found to give a fairly stable free radical product(s) which could be isolated on tic as a blue fraction and showed the hyperfine esr spectra.View full abstract -
Kazuhiro Maruyama, Tetsuo Otsuki1974 Volume 3 Issue 2 Pages 129-130
Published: February 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSPhoto-cycloaddition compounds, characterized by forming tetrahydropyran ring, were obtained in a good yield in the photochemical reaction of 2-alkoxy-1,4-naphthoquinones with several olefins. This type of photo-cycloaddition reaction between quinones and olefins has never been reported so far.View full abstract -
Hideo Fujita, Saburo Kako, Hiroaki Ohya-Nishiguchi, Yasuo Deguchi1974 Volume 3 Issue 2 Pages 131-132
Published: February 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSTriplet state ESR spectra of 1,10-phenanthroline and 2,9-dimethyl-1,10-phenanthroline metal chelates are reported with their zero-field splitting parameters.View full abstract -
Chikara Kaneko, Hiroshi Hasegawa, Seiji Tanaka, Kosaku Sunayashiki, Sa ...1974 Volume 3 Issue 2 Pages 133-136
Published: February 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe photolysis of 2-cyanoquinoline 1-oxide and its 4-methyl derivative in a variety of alcohols in the presence of conc. HCl gives the corresponding 6-alkoxy-and 6-chloroquinoline 2-carbonitriles, whose relative ratio depends on the concentration of the acid and the kind of alcohols. Similarly, the photolysis of these N-oxides in an alcohol in the presence of cone. H2SO4 gives 6-alkoxyquinoline 2-carbonitriles as the main substitution product.
A mechanism is postulated for this novel photo-alkoxylation reaction.View full abstract -
Masato Tanaka, Yoshihisa Watanabe, Take-aki Mitsudo, Yukio Yasunori, Y ...1974 Volume 3 Issue 2 Pages 137-140
Published: February 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSAsymmetric synthesis of alcohols has been achieved via hydrogenation of silyl enol ethers catalyzed by rhodium complexes with a variety of optically active phosphine ligands.View full abstract -
Takesi Sasaki, Akiya Matsuda1974 Volume 3 Issue 2 Pages 141-146
Published: February 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe rate and overvoltage of the constituent elementary steps of the hydrogen evolution reaction at a gold electrode in aqueous sulfuric acid were determined by means of a galvanostatic transient method together with a conventional steady state polarization method. It was concluded that the reaction proceeded through the discharge of hydrated proton which was followed by the recombination of adsorbed hydrogen atoms and the overvoltage of the former step was caused by the free charge on the electrode surface and that of the latter was attributed to the decrease in the electronic work function caused by the adsorbed hydrogen atoms.View full abstract -
Koichi Tanihara1974 Volume 3 Issue 2 Pages 147-148
Published: February 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSA convenient method of preparing guanidinium sulfate in a good yield has been established, which makes use of the reaction between urea and SO3–NH3 reaction mixture under an atmosphere of ammonia, and a series of novel treatments of the reaction mixture thus obtained.View full abstract -
Tatsuzo Ishigami, Yasunori Kinoshita, Akira Sugimori1974 Volume 3 Issue 2 Pages 149-152
Published: February 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSBenzotrichloride undergoes a photochemical solvolysis reaction in alcohol forming alkyl benzoate. The reaction is greatly accelerated in the presence of oxygen. It is suspected the involvement of the normally forbidden S0→T1 transition in the course of the reaction.View full abstract -
Yutaka Kirino1974 Volume 3 Issue 2 Pages 153-158
Published: February 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSESR spectral parameters of the radicals from L-ascorbic acid and its analogs in aprotic solvents are reported and compared with those for the same radicals in aqueous solutions. Marked differences in g factor as well as shifts (up to 16%) in proton and 13C hyperfine coupling constants have been observed. Conformational changes in the side chain result in the C6 protons becoming magnetically nonequivalent in the radical from L-ascorbic acid while equivalent in the radical from D-araboascorbic acid.View full abstract -
Ken-ichi Karakida, Kozo Kuchitsu, Robert K. Bohn1974 Volume 3 Issue 2 Pages 159-164
Published: February 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe skeletal structure of trimethylene sulfide (thietane) has been studied by gas electron diffraction. The bond distances (rg) and angles (rα) with their limits of error are: r(C-S) = 1.847±0.002 Å, r(C-C) = 1.550±0.003 Å, r(C-H) = 1.101±0.006 Å, ∠CSC = 77.0±0.5° and the effective average value of the dihedral angle, ∠C2SC4-C2C3C4 = 26±4°.View full abstract -
Tsuneo Imamoto, Yasuhide Yukawa1974 Volume 3 Issue 2 Pages 165-166
Published: February 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESS2-Benzoylaziridines (Ia–c and IIa,b) were deaminated to the corresponding trans-benzalacetophenones in high yields at room temperature by ferrous iodide.View full abstract -
Richard E. Bozak, Robert G. Riley, William P. Fawns, Hooshmand Javaher ...1974 Volume 3 Issue 2 Pages 167-170
Published: February 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe reactions of several acylferrocenes with methylmagnesium halides are examined. Some carbinol stabilities with adsorbents are reported.View full abstract -
Atsushi Takeuchi, Ken-ichi Tanaka, Koshiro Miyahara1974 Volume 3 Issue 2 Pages 171-176
Published: February 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe active sites for hydrogenation are formed on sulfurated nickel by displacing sulfur atoms with acetylene, and when acetylene is exhausted, the sites are occupied by sulfur to result in inactive. The above process is ensured with the H2–D2 equilibration reaction, and makes clear the characteristic of the partial hydrogenation of acetylene over sulfurated nickel.View full abstract -
Yasuo Koike, Fumikazu Yajima, Akira Yamasaki, Shizuo Fujiwara1974 Volume 3 Issue 2 Pages 177-180
Published: February 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe difference of cobalt-59 chemical shift is much larger in ob-lel isomerism than that in mer-fac isomerism. The line widths of lel-isomers are 0.10 gauss and ob-isomers 0.14 gauss. The chemical shift values of four [Co(1-pn)3]3+ are as follows: Δ(mer), 938 ppm; Δ(fac), 951 ppm; Λ(mer), 863 ppm; and Λ(fac), 859 ppm upfield from external [Co(NH3)6]3+ standard.View full abstract -
Masayasu Kurahashi1974 Volume 3 Issue 2 Pages 181-184
Published: February 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSCrystal and molecular structure of 1-(2-thiazolylazo)-2-naphthol has been determined by X-ray analysis. Evidence for the coexistence of the azo and hydrazone tautomer was obtained.View full abstract -
Tetsuo Akiyama, Tohru Kitamura, Tyuzo Isida, Mituyosi Kawanisi1974 Volume 3 Issue 2 Pages 185-186
Published: February 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSUV-irradiation of Δ2-tetrazolines (1) resulted in the elimination of nitrogen molecule to afford 1,2,3-trisubstituted diaziridines (2). This procedure constitutes a novel method of formation of diaziridines, especially 1-aryldiaziridines, in yields of preparative value.View full abstract -
Teruaki Mukaiyama, Takeshi Takeda, Kunio Atsumi1974 Volume 3 Issue 2 Pages 187-188
Published: February 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSIn the presence of AlCl3, trimethylsilyl sulfides react with carboxylic esters to give the corresponding thiolesters in high yields.View full abstract -
Takayuki Suga, Toshifumi Hirata, Tsuyoshi Shishibori, Keiji Tange1974 Volume 3 Issue 2 Pages 189-192
Published: February 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSU-14C-L-Leucine and 4,5-3H-L-leucine were incorporated into linalool (I) in Cinnamomum Camphora Sieb. var. linalooliferum Fujita in 0.004% yield at the highest value. Its labeling patterns have indicated that DMAPP may originate not only from mevalonic acid but also from leucine not via the acid.View full abstract -
Masuo Aizawa, Masaaki Takahashi, Shuichi Suzuki1974 Volume 3 Issue 2 Pages 193-196
Published: February 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSCurdlan-type polysaccharide was found to form a thermo-reversible gel in DMSO with the addition of water. The sol–gel transition was also reversible with respect to mole fraction of DMSO. Drastic changes in light scattering intensity, viscosity and optical rotation of the polysaccharide in DMSO with the addition of water were observed around the sol–gel transition point. The gelation mechanism of the polysaccharide in DMSO-H2O mixed solvents is discussed.View full abstract -
Fumio Wada, Tsutomu Matsuda1974 Volume 3 Issue 2 Pages 197-200
Published: February 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSStudies on the pressure and temperature dependences of the Reppe’s hydroxymethylation of propylene by Fe(CO)5-tertiary amine catalyst indicated that the catalytic species was hydridotetracarbonyl ferrate, HFe(CO)4− The reaction was found to proceed preferably under the condition where the dissociation, HFe(CO)4− \ ightleftharpoons HFe(CO)3−+CO, could occur to form a coordinatively unsaturated species.View full abstract -
Masaru Matsuoka, Teijiro Kitao, Kenzo Konishi1974 Volume 3 Issue 2 Pages 201-202
Published: February 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSA new organic pigment, 5,8-dibromo-3′-hydroxybenzo[b]quinophthalone, has been developed to replace cadmium yellow. This compound is very similar to cadmium yellow in colour and has excellent pigment properties, such as good fastness to light, heat, migration, acid, alkali and organic solvents.View full abstract -
Tetsuo Saji, Shigeru Aoyagui1974 Volume 3 Issue 2 Pages 203-206
Published: February 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSPolarograms and cyclic voltammograms of tris(2,2′-bipyridine)vanadium(0) were taken in a DMF solution. They exhibited three one-electron reduction waves corresponding to VL3−/VL3 (L=2,2′-bipyridine)-VL32−/VL3− and VL33/VL32− and two oxidation waves corresponding to VL3/VL3+ and VL3+/VL32+. The oxidation-reduction potential difference for VL3+ was anomalously small. This was explained by assuming diamagnetism of VL3+.View full abstract
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