-
Toshiaki Taura
1984 Volume 13 Issue 12 Pages
2011-2012
Published: December 05, 1984
Released on J-STAGE: March 27, 2006
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The absorption spectra of the title compound were measured in a variety of solvents. It was found that the peak position (λ
max) of the first d-d absorption band is strikingly influenced by solvent molecules. The magnitude of this influence could be estimated by using the acceptor numbers of the solvents.
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Tetsuo Yamada, Tsutomu Suzuki, Tsuneyuki Homma
1984 Volume 13 Issue 12 Pages
2013-2016
Published: December 05, 1984
Released on J-STAGE: March 27, 2006
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Gasification of various graphites mechanically mixed with nickel catalysts by carbon dioxide was carried out in a thermobalance at temperatures up to 1000 °C. It was observed that some graphites gave large weight loss in the low temperature region of 500–750 °C. The weight loss in this region were increased with increase of the catalyst loading until graphite was completely gasified.
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Satuo Kamata, Morihide Higo
1984 Volume 13 Issue 12 Pages
2017-2020
Published: December 05, 1984
Released on J-STAGE: March 27, 2006
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Terephthalic acid adsorbed onto Al
2O
3 from alcohol solution was studied by using inelastic electron tunneling spectroscopy. A comparison with the tunneling spectrum of p-acetylbenzoic acid shows that terephthalic acid is adsorbed predominantly as a monocarboxylate ion onto the alumina surface.
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Kiichiro Kamata, Hirotsugu Hosono, Yuji Maeda, Kikuo Miyokawa
1984 Volume 13 Issue 12 Pages
2021-2022
Published: December 05, 1984
Released on J-STAGE: March 27, 2006
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Pure and fine powder of zinc oxide was prepared by hydrolysis of bis(acetylacetonato)zinc(II) in methanol–water mixture. A significant difference in the particle shape was observed by TEM between ZnO powders prepared at 25 and 80 °C.
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Toshio Ogino, Kazuyuki Awano, Tsutomu Ogihara, Koji Isogai
1984 Volume 13 Issue 12 Pages
2023-2026
Published: December 05, 1984
Released on J-STAGE: March 27, 2006
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Two types of trishomocubanones, pentacyclo[5.4.0.0
2,6.0
3,10.0
4,8]undecan-11-ones and pentacyclo[5.4.0.
2,60.
3,10O.
5,8]undecan-9-ones are catalytically cycloreverted by [Rh(CO)
2Cl]
2 in different cleavage modes. The mechanism is discussed on the basis of a kinetic study.
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Tetsuya Hasegawa, Keiichiro Fuwa, Hiroki Haraguchi
1984 Volume 13 Issue 12 Pages
2027-2030
Published: December 05, 1984
Released on J-STAGE: March 27, 2006
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The population density distributions of argon atoms in an inductively coupled plasma (ICP) are calculated based on the collisional-radiative model under a steady state approximation. The results obtained help to interpret the physical states of the argon plasma and to elucidate the characteristics of the ICP as an excitation source for spectrochemical analysis.
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Vernon J. Freer, Peter Yates
1984 Volume 13 Issue 12 Pages
2031-2032
Published: December 05, 1984
Released on J-STAGE: March 27, 2006
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Treatment of 5,5-dimethyl-2-cyclohexen-1-one and isophorone with phosphomolybdic acid, potassium dichromate, cupric sulfate, and air gives 5,5-dimethyl- and 3,5,5-trimethyl-2-cyclohexene-1,4-dione, respectively. In the latter reaction treatment of the crude product with aqueous base leads to the formation of 2,3,6,7-tetrahydro-2,2,6,6,-tetramethylanthracene-1,4,5,8-tetrone.
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Kyosuke Satake, Tsutomu Kumagai, Toshio Mukai
1984 Volume 13 Issue 12 Pages
2033-2036
Published: December 05, 1984
Released on J-STAGE: March 27, 2006
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3,6-Di-
t-butyl-1,4-dihydropyrrolo[3,2-
b]pyrroles and its
N-methoxycarbonyl derivatives were synthesized and their IR, NMR, and UV spectra as well as the oxidation potentials were measured. On the basis of these data, aromaticity and basicity of this novel 10π-aromatic system 1,4-dihydropyrrolo [3,2-
b]pyrrole were discussed.
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Shigemasa Takano, Toshio Enokida, Atsushi Kakuta, Yasuki Mori
1984 Volume 13 Issue 12 Pages
2037-2040
Published: December 05, 1984
Released on J-STAGE: March 27, 2006
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The spectroscopic characterization of a novel polymorph of metal-free phthalocyanine(τ-form), showing the particular X-ray diffraction peaks, was investigated by comparing the other polymorphs. In this paper, the precise ir spectrum obtained by FTIR and visible absorption spectrum of the τ-form are reported.
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Kazuo Achiwa, Nobuyuki Imai, Tadashi Motoyama, Minoru Sekiya
1984 Volume 13 Issue 12 Pages
2041-2044
Published: December 05, 1984
Released on J-STAGE: March 27, 2006
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Tetrabutylammonium fluoride catalytically induced a regioselective 1,3-cycloaddition of the carbanions leading to 2,2,4-substituted pyrrolidines. And in the presence of trifluoroacetic acid, the corresponding 2,2,3-substituted products were regioselectively obtained via the intermediary azomethine ylide.
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Shoji Kajigaeshi, Takashi Nakagawa, Shizuo Fujisaki
1984 Volume 13 Issue 12 Pages
2045-2046
Published: December 05, 1984
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Reaction of aliphatic and aromatic amides in acetic acid with aqueous sodium bromite (NaBrO
2) under mild conditions gave
N-bromoamides in fairly good yields.
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Kaoru Fujimoto, Tsutomu Shikada, Kohji Omata, Hiro-o Tominaga
1984 Volume 13 Issue 12 Pages
2047-2050
Published: December 05, 1984
Released on J-STAGE: March 27, 2006
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Vapor phase carbonylation of methanol was catalyzed by strong solid acids in the absence of halogen promoter under pressurized conditions. Methyl acetate, methyl formate and acetic acid were obtained as carbonylated product with dimethyl ether as main by product. Hydrocarbons were also formed at high temperature.
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Kaoru Fujimoto, Kenji Asami, Tsutomu Shikada, Hiro-o Tominaga
1984 Volume 13 Issue 12 Pages
2051-2054
Published: December 05, 1984
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Dimethyl ether was produced selectively from synthesis gas with hybrid catalysts composed of methanol synthesis catalysts and γ-alumina. It was estimated that methanol, the primary product, was immediately converted in situ to dimethyl ether and water on the γ-alumina and that the water reacted with CO to form CO
2 and H
2 on the methanol synthesis catalyst.
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Tamotsu Fujisawa, Makoto Watanabe, Toshio Sato
1984 Volume 13 Issue 12 Pages
2055-2058
Published: December 05, 1984
Released on J-STAGE: March 27, 2006
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The diastereoface-differentiating reaction of Grignard reagents or organolithium reagents toward chiral cyclic α-ketoenamines, prepared from the corresponding cycloalkane-1,2-dione and optically active pyrrolidine derivatives, was found to give, after hydrolysis, (
R)- or (
S)-α-hydroxycycloalkanones, respectively, in high enantiomeric excess.
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Kiyohito Okamura, Mitsuhiko Sato, Yoshio Hasegawa, Tadaaki Amano
1984 Volume 13 Issue 12 Pages
2059-2060
Published: December 05, 1984
Released on J-STAGE: March 27, 2006
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Silicon oxynitride fibers were synthesized by the reaction of polycarbosilane in NH
3 gas. The fibers were in the amorphous state and transparent in visible light. The tensile strength and Young’s modulus of the fibers obtained at 1300 °C were 1.80±0.37 and 139±17 GPa, respectively
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Kazuko Matsumoto
1984 Volume 13 Issue 12 Pages
2061-2064
Published: December 05, 1984
Released on J-STAGE: March 27, 2006
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cis-Diammineplatinum α-pyrrolidone tan cation, [Pt
4(NH
3)
8(C
4H
6NO)
4]
6+, is proved to be reduced to dark blue [Pt
4(NH
3)
8(C
4H
6NO)
4]
5+ and yellow [Pt
4(NH
3)
8(C
4H
6NO)
4]
4+ by water and be oxidized by air to a yellow species of Pt(III). The reduction reaction is accelerated by visible light irradiation. Both the reduction and oxidation reactions are completely reversible and the addition of Ce
4+ or Fe
2+ quantitatively restores the original species, respectively.
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Koichi Narasaka, Shigeru Yamazaki, Yutaka Ukaji
1984 Volume 13 Issue 12 Pages
2065-2068
Published: December 05, 1984
Released on J-STAGE: March 27, 2006
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Treatment of acyclic β-hydroxy ketones with O-benzylhydroxylamine hydrochloride gave a mixture of stereoisomers of the corresponding O-benzyloximes. The mixture of the both isomers was reduced with lithium aluminum hydride in the presence of sodium or potassium methoxide to afford
syn-1,3-amino alcohols in a highly stereoselective manner.
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Takeshi Oriyama, Teruaki Mukaiyama
1984 Volume 13 Issue 12 Pages
2069-2070
Published: December 05, 1984
Released on J-STAGE: March 27, 2006
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A new reducing agent prepared by the treatment of stannous chloride with diisobutylaluminum hydride was shown to be effective for debrominations of α-bromo ketones to ketones and of
vic-dibromoalkanes to the corresponding alkenes under mild conditions.
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Takeshi Oriyama, Teruaki Mukaiyama
1984 Volume 13 Issue 12 Pages
2071-2074
Published: December 05, 1984
Released on J-STAGE: March 27, 2006
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A new chiral reducing agent, prepared by treatment of a mixture of stannous chloride and a chiral diamine derived from (S)-proline with diisobutylaluminum hydride, is effective for asymmetric reduction of prochiral ketones.
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Yasuo Kubo, Sachiko Tojo, Manami Suto, Rie Toda, Takeo Araki
1984 Volume 13 Issue 12 Pages
2075-2078
Published: December 05, 1984
Released on J-STAGE: March 27, 2006
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Photolyses of
N-methylnapathalenedicarboximides (1,8-NI, 2,3-NI, and 1,2-NI) with various olefins were investigated in benzene. The reaction pathways depended largely on the structure of arene moiety of the imides. The main reactions of 1,8-NI, 2,3-NI, and 1,2-NI were found as cyclobutane formation, oxetane formation, and insertion of olefin between the C(=O)–N bond of imide moiety, respectively.
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Hiroshi Suginome, Shinji Yamada
1984 Volume 13 Issue 12 Pages
2079-2082
Published: December 05, 1984
Released on J-STAGE: March 27, 2006
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We describe a new and versatile method for transforming cyclic ketones into cyclic sulfides or cyclic amines with the same ring size
via five-step procedure. The transformation is stereospecific with regard to the chiral center adjacent to the carbonyl group of the ketones.
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Akira Tai, Kazumasa Tsukioka, Hiroshi Ozaki, Tadao Harada, Yoshiharu I ...
1984 Volume 13 Issue 12 Pages
2083-2084
Published: December 05, 1984
Released on J-STAGE: March 27, 2006
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A new type of asymmetrically modified Raney nickel catalyst with high durability has been prepared by treating the Raney nickel modified with tartaric acid and NaBr with a small amount of amine. The resulting catalyst showed high enantioface-differentiating ability and hydrogenation activity even after repeated uses of ten times upon the hydrogenation of methyl acetoacetate to methyl 3-hydroxybutyrate.
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Fumio Toda, Koichi Tanaka, Thomas C. W. Mak
1984 Volume 13 Issue 12 Pages
2085-2088
Published: December 05, 1984
Released on J-STAGE: March 27, 2006
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X-Ray analysis of a 1:1 complex of (
R)-(+)-bis-β-naphthol with (
R)-(+)-methyl
m-tolyl sulfoxide has established the absolute configuration and showed that the two molecular components are alternately linked by O–H···O hydrogen bonds to form infinite zigzag chains parallel to the a axis. The bis-β-naphthol molecule adopts a cisoid conformation with a torsion angle of −78,2(2)° about the C–C bond joining the aromatic rings.
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Akira Harada, Shigetoshi Takahashi
1984 Volume 13 Issue 12 Pages
2089-2090
Published: December 05, 1984
Released on J-STAGE: March 27, 2006
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β-Cyclodextrin(β-CD) was found to form inclusion complexes in ethylene glycol, diethylene glycol, triethylene glycol, 2-methoxyethanol, 2-ethoxyethanol, methanol, and glycerine solutions. γ-CD also formed complexes in ethylene glycol solution. The binding of ferrocene by β-CD is stronger in ethylene glycol than in dimethyl sulfoxide and dimethyl formamide.
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Yoshiki Okamoto, Narimasa Iwamoto, Setsuo Takamuku
1984 Volume 13 Issue 12 Pages
2091-2092
Published: December 05, 1984
Released on J-STAGE: March 27, 2006
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(p-Nitrophenyl)methylphosphonic acid underwent easily photochemical C–P bond cleavage in alkaline 80% ethanol solution, resulting in the formation of p-nitrotoluene, orthophosphate, and ethyl phophate. In acidic solution, the phosphonic acid was stable on irradiation.
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Akira Arase, Masayuki Hoshi, Yuzuru Masuda
1984 Volume 13 Issue 12 Pages
2093-2096
Published: December 05, 1984
Released on J-STAGE: March 27, 2006
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Internal enynyldialkylboranes give regio- and stereospecifically designed conjugated enynes, bearing an allyl or 1-alkynyl group on the internal alkenyl carbon atom, by a coupling reaction with allyl bromide or 1-bromo-1-alkynes.
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Masayuki Yoshikawa, Yoshiharu Ikeda, Kohei Takenaka, Masahiro Torihara ...
1984 Volume 13 Issue 12 Pages
2097-2100
Published: December 05, 1984
Released on J-STAGE: March 27, 2006
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An aminoglycoside antibiotic ribostamycin was synthesized from
D-glucosamine and ribose
via an amino-trisaccharide intermediate, which was prepared through successive selective glycosidations on the 1,6-anhydro-
D-glucosamine moiety.
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Shinjiro Kobayashi, Tsugio Kitamura, Hiroshi Taniguchi, Wolfram Schnab ...
1984 Volume 13 Issue 12 Pages
2101-2104
Published: December 05, 1984
Released on J-STAGE: March 27, 2006
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The rates of β-aryl migration in vinyl cations were determined by laser flash photolysis of the corresponding vinyl bromides in acetonitrile. β-Anisyl migration occurred very rapidly (k≥10
8 s
−1). β-Phenyl migration in Ph(An)C=\overset+C-Ph→An-\overset+C=CPh
2 was relatively slow process (k=7.4 × 10
6 s
−1 at 273 K).
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Yukio Masaki, Yuzuru Serizawa, Kinnosuke Nagata, Kenji Kaji
1984 Volume 13 Issue 12 Pages
2105-2108
Published: December 05, 1984
Released on J-STAGE: March 27, 2006
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5-Alkyl-6,8-dioxabicyclo[3.2.l]octanes with sulfur-containing substituents at the C(3)-position were found to undergo an unusual substitution reaction with mercaptans in the presence of the Lewis acids providing the corresponding 3-sulfenyl derivatives.
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Junzo Otera, Toru Yano, Koji Nakashima, Rokuro Okawara
1984 Volume 13 Issue 12 Pages
2109-2112
Published: December 05, 1984
Released on J-STAGE: March 27, 2006
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119Sn FT NMR spectra proved to differentiate tin atoms in dimeric tetrabutyldistanoxanes successfully. Tentative assignment of
119Sn NMR spectra was achieved for the first time.
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Yoshikazu Kimura, Michiyo Suzuki, Shiro Terashima
1984 Volume 13 Issue 12 Pages
2113-2116
Published: December 05, 1984
Released on J-STAGE: March 27, 2006
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The title compound showing mp 226–229 °C(decomp) and [α]
D20 +190°(CH
3OH) was synthesized by two different synthetic routes and fully characterized by its spectral properties. These studies suggested that the compound previously claimed to be 4-demethoxyadriamycin hydrochloride, mp 186–188 °C(decomp), might be (+)-14-formyloxy-4-demethoxydaunorubicin hydrochloride.
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Kenji Okuyama, Yoshie Soboi, Kiyoshi Hirabayashi, Akira Harada, Atsush ...
1984 Volume 13 Issue 12 Pages
2117-2120
Published: December 05, 1984
Released on J-STAGE: March 27, 2006
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It has been shown by optical microscopy and X-Ray diffraction method that dimethylammonium bromides having two long alkyl chains (n=16, 18) form single crystals. This finding is the first example of the formation of single crystals of totally synthetic amphiphiles. The unit cell dimensions of the crystals of these compounds were similar to one another.
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Mitsuru Sano, Teruo Matubara
1984 Volume 13 Issue 12 Pages
2121-2124
Published: December 05, 1984
Released on J-STAGE: March 27, 2006
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The EXAFS study has been carried out for the copper site of nitrite reductase from Alcaligenes sp. The curve-fitting results showed that the copper site has N
2S with Cu–N=1.97 and Cu–S=2.17 Å.
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Yoshio Ueno, Akihiko Kojima, Makoto Okawara
1984 Volume 13 Issue 12 Pages
2125-2128
Published: December 05, 1984
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2-(Alkylsulfonyl)benzothiazoles are reduced with sodium tetrahydroborate to give alkane sulfinic acids in good yield.
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Hitomi Suzuki, Hiroyuki Tani
1984 Volume 13 Issue 12 Pages
2129-2130
Published: December 05, 1984
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The reaction of 2-aminoalcohols with diphosphorus tetraiodide in benzene at room temperature leads to the corresponding aziridines in good to moderate yields.
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R. Rathore, Vidya Bhushan, S. Chandrasekaran
1984 Volume 13 Issue 12 Pages
2131-2134
Published: December 05, 1984
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Cetyltrimethylammonium permanganate (CTAP) has been found to be a mild and highly selective reagent for the oxidation of benzylic alcohols to the corresponding aldehydes or ketones.
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Toru Nakanishi, Tsutomu Seimiya, Tadashi Sugawara, Hiizu Iwamura
1984 Volume 13 Issue 12 Pages
2135-2138
Published: December 05, 1984
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The line width Δν
Cl of
35Cl NMR was measured for n-C
12H
25O(CH
2CH
2O)
pH (p = 5, 6, 7, 8) / water / XCl (X = H, Na, Li) systems. The
17O NMR line width Δν
O due to water was also examined. The broadening of Δν
Cl by introduction of the nonionic surfactant to aqueous XCl solutions was explained by the enhanced interaction of the chloride ions with surfactant micelles to which inorganic cations were incorporated.
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Yukito Mirakami, Jun-ichi Kikuchi, Masashi Suzuki, Toshihiko Takaki
1984 Volume 13 Issue 12 Pages
2139-2142
Published: December 05, 1984
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An octopus azaparacyclophane bearing eight hydrophobic chains,
N,
N′,
N″,
N'″-tetrakis[2-[
N-[1-(
N,
N-ditetradecylcarbamoyl)-5-ammonio-1-pentyl]carbamoyl]ethyl]-3,10,21,28-tetraoxo-2,11,20,29-tetraaza[3.3.3.3]paracyclophane tetrachloride [APC(C
2Lys2C
14)
4], was prepared and its substrate-binding behavior was examined in comparison with that of related azaparacyclophanes.
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Yohji Nakatsuji, Masayuki Yonetani, Mitsuo Okahara
1984 Volume 13 Issue 12 Pages
2143-2144
Published: December 05, 1984
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Several 16-crown-5 derivatives having an electron-donating sidearm were newly prepared and their stability constants toward Na
+ and K
+ were measured. The difference in the position of the sidearm was disclosed to change remarkably the complexation property of such type of compounds.
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Takahiro Tezuka, Hiroshi Marusawa, Kazuhiko Ichikawa
1984 Volume 13 Issue 12 Pages
2145-2148
Published: December 05, 1984
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Comparison of the isomer ratios and yields of cresol, methoxyphenol, and nitrophenol, which were obtained by the aromatic hydroxylation with hydroxyl radical in the presence or absence of benzoquinones in anhydrous media, indicates that disproportionation of hydroxycyclohexadienyl radicals occurs nonselectively.
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Kazumi Kondo, Sylvain Cottens, Manfred Schlosser
1984 Volume 13 Issue 12 Pages
2149-2152
Published: December 05, 1984
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The readily accessible 2-fluoro-2-alkenals react with phosphorus ylids at approximately the same rate and leading to nearly the same (
Z/
E)-mixtures of products as the corresponding halogen-free aldehydes do. Thus, the Wittig reaction allows to prepare a great variety of 2-fluorodienes with high yields.
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Setsuko Irie
1984 Volume 13 Issue 12 Pages
2153-2156
Published: December 05, 1984
Released on J-STAGE: March 27, 2006
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A selective formose synthesis was achieved by photo- and γ-irradiation of formaldehyde in the presence of base. Photoirradiation of aqueous formaldehyde solution gave pentaerythritol as a single product, while γ-irradiation resulted in the formation of glycolaldehyde as the main product. These results suggest that the formose reaction under photo- and γ-irradiation is considerably different from the thermal formose reaction.
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Juji Yoshimura, Masanori Yamaura, Tsuneji Suzuki, Hironobu Hashimoto
1984 Volume 13 Issue 12 Pages
2157-2158
Published: December 05, 1984
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The optically active bicyclomycin was successfully synthesized in 17 steps from
N,
N′-diacetyl-anhydroglycine.
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