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Akiko Kobayashi, Nobuyoshi Sasagawa, Yukiyoshi Sasaki, Kiyotaka Asakur ...
1985 Volume 14 Issue 1 Pages
1-4
Published: January 05, 1985
Released on J-STAGE: March 27, 2006
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Poly(carbon diselenide) is metallic in an ordered crystalline state and it becomes less conductive when crystalline imperfection increases. EXAFS spectra show the existence of Se–Se bonds and the co-ordination number of Se in metallic poly(carbon diselenide) is almost 2.0, indicating the infinite chains of Se atoms. Extended Huckel calculation gave a reasonable interpretation of the metallic nature of crystalline poly(carbon diselenide).
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Akira Nishinaga, Hitoshi Iwasaki, Toshiyuki Kondo, Teruo Matsuura
1985 Volume 14 Issue 1 Pages
5-8
Published: January 05, 1985
Released on J-STAGE: March 27, 2006
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The oxygenation of 4-alkynyl-2,6-di-
t-butylphenols (
1) promoted by Co(Salpr) resulted in the dioxygen incorporation predominantly into the side chain, whereas in the oxygenation of
1 with
t-BuOK in
t-BuOH dioxygen was incorporated exclusively into the ortho position. The results are rationalized by a radical process in the former reaction and a nonradical process in the latter oxygenation.
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Kiyonori Shinoda, Kensei Yasuda
1985 Volume 14 Issue 1 Pages
9-10
Published: January 05, 1985
Released on J-STAGE: March 27, 2006
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The vapor phase carbonylation of methyl chloroacetate (MCA) with rhodium trichloride supported on active carbon was carried out at 200–300 °C. Dimethyl malonate (DMM) was obtained in good yield without any side reactions.
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Kahee Fujita, Seiji Ejima, Taiji Imoto
1985 Volume 14 Issue 1 Pages
11-12
Published: January 05, 1985
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A double γ-cyclodextrin host bridged with a disulfide bond included two molecules of methyl orange with an association constant (1.06×10
11 M
−2) which is the largest value ever reported for 1 : 2 (host : guest) bindings of γ-cyclodextrin, demonstrating the collaboration of the two cyclodextrin parts on guest binding.
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Daiyo Terunuma, Masato Kato, Masanao Kamei, Hidekatsu Uchida, Hiroyuki ...
1985 Volume 14 Issue 1 Pages
13-14
Published: January 05, 1985
Released on J-STAGE: March 27, 2006
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Application of optically active carbonfunctional organosilanes for the determination agent of optical purities of chiral amines, alcohols, and carboxylic acids by using NMR spectrometer were investigated.
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Yoshifumi Tanimoto, Masanobu Takashima, Megumu Uehara, Michiya Itoh, M ...
1985 Volume 14 Issue 1 Pages
15-18
Published: January 05, 1985
Released on J-STAGE: March 27, 2006
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The magnetic field effect on the intramolecular hydrogen abstraction of n-tetradecyl anthraquinone-2-carboxylate was studied in aerated 1,1,2-trichlorotrifluoroethane, using steady-state photolysis, two-step laser excitation fluorescence, and laser flash photolysis.
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Masahiko Inamo, Shigenobu Funahashi, Yoshio Ito, Yoshiki Hamada, Motoh ...
1985 Volume 14 Issue 1 Pages
19-22
Published: January 05, 1985
Released on J-STAGE: March 27, 2006
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The reaction of oxo(5,10,15,20-tetrakis(4-
N-methylpyridyl)porphinato)molybdenum(V) ([Mo
VO(tmpyp)(OH
2)]
5 +) with H
2O
2 under different conditions produced three different species of peroxomolybdenum complexes, i.e., [Mo
VO(O
2 )(tmpyp)]
3+, [Mo
VI(O
2)(tmpyp)(OH
2)]
6+, and [Mo
VI(O
2)
2(tmpyp)]
4+.
View full abstract
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Hironori Arakawa, Takakazu Fukushima, Masaru Ichikawa, Kazuhiko Takeuc ...
1985 Volume 14 Issue 1 Pages
23-26
Published: January 05, 1985
Released on J-STAGE: March 27, 2006
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The behavior of adsorbed CO and reaction intermediates on Rh/SiO
2has been observed at high pressure CO hydrogenation condition by in situ FT-IR spectroscopy. A good relationship exists between turnover frequency of CO conversion and the ratio of bridged-CO/linear-CO adsorbed on Rh/SiO
2 at the reaction condition in terms of Rh dispersion of catalysts. Turnover frequency increases with the increase of this ratio as a general trend. Two kinds of acetate species as reaction products on SiO
2 have been observed.
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Hiroshi Suginome, Chi Fu Liu, Akio Furusaki
1985 Volume 14 Issue 1 Pages
27-30
Published: January 05, 1985
Released on J-STAGE: March 27, 2006
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The alkoxy radical generated from a fused cyclobutanol obtained by the photocycloaddition of 4-hydroxycoumarin and dimethylbut-2-ene rearranges to a furocoumarin and a furo-benzo-γ-pyrone. The results afford further insight regarding the mechanism of the formation of the furocoumarins.
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Nobuyoshi Yasuda, Hideo Tsutsumi, Takao Takaya
1985 Volume 14 Issue 1 Pages
31-34
Published: January 05, 1985
Released on J-STAGE: March 27, 2006
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Two stereoisomers of swainsonine, (1S,2S,8S,8aR)-1,2,8-trihydroxyoctahydroindolizine and the corresponding (1S,2R,8S,8aR) derivative, were synthesized from
D-glucose via one step cyclization to the 5-oxo-1,2,8-trihydroxyoctahydroindolizine derivative.
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Jitsuo Kiji, Hisatoshi Konishi, Tamon Okano, Norikazu Koyuhara, Masaak ...
1985 Volume 14 Issue 1 Pages
35-36
Published: January 05, 1985
Released on J-STAGE: March 27, 2006
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Diacetylenes, R–C≡C-C≡C–R, (R =–(CH
2)
n–CH
3, n=5,7,9), were irradiated with UV light or γ-ray, yielding red polymers, [=(R)C–C≡C–C(R)=]
x, of which structure was confirmed by the Raman spectroscopy.
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Tetsuo Suami, Kin-ichi Tadano, Yoshihide Ueno, Youichi Iimura
1985 Volume 14 Issue 1 Pages
37-40
Published: January 05, 1985
Released on J-STAGE: March 27, 2006
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Natural methyl (−)-shikimate has been synthesized from
D-lyxose, employing a double carbon–carbon bond formation of 2,3,4-tri-
O-benzyl-5-
O-mesyl-
D-lyxose with a dianion of dimethyl malonate as a key reaction.
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Toshishige M. Suzuki, Toshiro Yokoyama, Hideyuki Matsunaga, Tetsuo Kim ...
1985 Volume 14 Issue 1 Pages
41-44
Published: January 05, 1985
Released on J-STAGE: March 27, 2006
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Adsorption characteristics of polystyrene resins containing bis (carboxymethyl)amino moiety for group IIIb ions have been studied. The selectivity order toward the present chelating resins is In(III)>Ga(III))>>Al(III) . Selective recovery of Ga(III) and/or In(III) from the acidic solution of Al(III) has been demonstrated by column operation using the present chelating resins.
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Susumu Okazaki, Hiroshi Kuroha, Tetsuhiro Okuyama
1985 Volume 14 Issue 1 Pages
45-48
Published: January 05, 1985
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Niobium oxide, Nb
2O
5, remarkably enhanced the catalytic activity of FeO
x for the reduction of NO
x with NH
3 and O
2. Thus, for the reduction catalyzed by FeO
x containing a small amount of Nb
2O
5, the conversion attained 90–100% in contrast to less than 40% for the reduction catalyzed by FeO without Nb
2O
5. The catalytic activity of the mixed oxide was scarcely affected by addition of SO
2 to the reaction gas.
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Kiyohiko Tajima
1985 Volume 14 Issue 1 Pages
49-52
Published: January 05, 1985
Released on J-STAGE: March 27, 2006
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α-
D-Galactopyranuronic acid was converted to 1,2,3-tri-
O-acetyl-4-deoxy-β-
L-threo-4-hexenopyranuronic acid (
3) and 3-acetoxy-6-(diacetoxymethyl)-2
H-pyran-2-one respectively by treatment with acetic anhydride-4-(dimethylamino)pyridine or acetic anhydride-acetic acid-pyridine. Further degradation of
3 in acetic anhydride-triethylamine gave comanic acid.
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Hiroji Oda, Koichiro Oshima, Hitosi Nozaki
1985 Volume 14 Issue 1 Pages
53-56
Published: January 05, 1985
Released on J-STAGE: March 27, 2006
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Whereas 2-methyl-2,3-epoxy-6-triethylgermyl-6-tridecene gave the expected alkylidenecyclopentanol upon treatment with TiCl
4, 5-triethylgermyl-5-dodecenal dimethyl acetal provided the unexpected cyclohexene derivative. Transformation of 1-triethylgermylcycloalkenes into 1-iodocycloalkenes is also described.
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Michiyo Suzuki, Teruyo Matsumoto, Rumiko Abe, Yoshikazu Kimura, Shiro ...
1985 Volume 14 Issue 1 Pages
57-60
Published: January 05, 1985
Released on J-STAGE: March 27, 2006
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(±)-2,5,12-Trihydroxy-1,2,3,4-tetrahydronaphthacene-6,11-dione-2-carboxylic acid was found to readily afford the racemic title compound by successive treatments with
N,
N′-carbonyldiimidazole and methylmagnesium bromide in the presence of trimethylsilyl triflate. The same reaction scheme could also furnish the optically pure title compound from the (
R)-carboxylic acid produced by the optical resolution.
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Kaneto Uekama, Teruko Imai, Fumitoshi Hirayama, Masaki Otagiri, Toru H ...
1985 Volume 14 Issue 1 Pages
61-64
Published: January 05, 1985
Released on J-STAGE: March 27, 2006
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The chiral discrimination of β-cyclodextrin (β-CyD) was demonstrated by measuring 270 MHz
1H-NMR spectra, using
dl-pirprofen (PF) as a guest molecule. Upon binding to β-CyD, the induced
1H-chemical shifts of PF, particularly in the phenylpropionic acid portion, were significantly different between the
d- and
l-isomers, while no enantiometric difference was observed in the absence of β-CyD.
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Masayoshi Isobe
1985 Volume 14 Issue 1 Pages
65-68
Published: January 05, 1985
Released on J-STAGE: March 27, 2006
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The denitrosation of 3-
t-butyl-1-methyl-1-nitrosothiourea(
1) was retarded by β-, and γ-cyclodextrins(CDs) at pH 4.70. Decomposition of
1 in the presence of β-CD produced selectively 3-
t-butyl-1-methylthiourea(
1a), which was remarkably different from the product ratio in the absence of β-CD. These results may be caused by both the protective and the microsolvent effect of β-CD.
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Juji Yoshimura, Ken-ichi Sato, Rhiddi Bir Singh
1985 Volume 14 Issue 1 Pages
69-70
Published: January 05, 1985
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The title branched-chain sugar obtained by methanolysis of sibiromycin was easily synthesized from L-rhamnose through eight-step conversions.
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Minoru Isobe, Naoki Fukami, Toshio Goto
1985 Volume 14 Issue 1 Pages
71-74
Published: January 05, 1985
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An optically active
allo-yohimbane was synthesized in 12 steps from levoglucosenone. The key steps are Diels–Alder cycloaddition for the E-ring construction followed by eliminative Wolff–Kishner reduction and selective double cyclization in the D- and C-ring formation.
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Ken-ichi Machida, Michio Enyo
1985 Volume 14 Issue 1 Pages
75-78
Published: January 05, 1985
Released on J-STAGE: March 27, 2006
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The electrodes of Cu and Cu-based amorphous alloys, a-Cu
35Ti
65 and a-Cu
33Zr
67, were very active for the HCHO electro-oxidation in alkaline solutions. The oxidation started at electrode potentials as low as 0.1 V (RHE) and the HF-treated amorphous alloys exhibited high current densities around 40 mA cm
−2 (app.) at 0.2 V.
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Yuichiro Haramoto, Hiroyoshi Kamogawa
1985 Volume 14 Issue 1 Pages
79-82
Published: January 05, 1985
Released on J-STAGE: March 27, 2006
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2-(
p-Cyanophenyl)-5-alkyl-1,3-oxathianes having the monotropic nematic liquid-crystal phase around room temperature were synthesized and their liquid-crystal behavior was compared with those of the corresponding 1,3-dithianes and 1,3-dioxanes.
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Hazime Saitô, Ryoko Tabeta
1985 Volume 14 Issue 1 Pages
83-86
Published: January 05, 1985
Released on J-STAGE: March 27, 2006
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13C NMR spectra of biologically active peptides, Pro-Leu-Gly-NH
2 and gramicidin S, in the solid state were compared with those in solution, to gain insight of stability of the β-turn structure in the former in solution and of conformational feature of the latter in the solid state.
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Kozo Shishido, Kou Hiroya, Keiichiro Fukumoto, Tetsuji Kametani
1985 Volume 14 Issue 1 Pages
87-90
Published: January 05, 1985
Released on J-STAGE: March 27, 2006
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The basic carbocyclic frameworks of stemodane, cedrane, hydroazulene, and himachalene type terpenoids are newly synthesized from a common tricyclic ketone, which is readily obtained
via an intramolecular Diels–Alder reaction of a trienone, by simple manipulations.
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Motokazu Uemura, Kazuo Isobe, Yuji Hayashi
1985 Volume 14 Issue 1 Pages
91-94
Published: January 05, 1985
Released on J-STAGE: March 27, 2006
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Stereoisomers of 7- and 8-hydroxycalamenenes were synthesized stereo- and regioselectively via (arene)tricarbony1 chromium complexes.
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Takashi Nakajima, Hisashi Miyata, Yutaka Kubokawa
1985 Volume 14 Issue 1 Pages
95-98
Published: January 05, 1985
Released on J-STAGE: March 27, 2006
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The oxidation of propyne on ZnO by
18O
2 and N
2O has been studied by IR spectroscopy. The lattice oxygen participates in the formation of diketone-like species and that adsorbed oxygen forms ketene-like species. No formate species is formed in the oxidation by N
2O.
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Akira Ohkawa, Yasuyuki Ueda, Nobuyuki Sakai
1985 Volume 14 Issue 1 Pages
99-102
Published: January 05, 1985
Released on J-STAGE: March 27, 2006
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Liquid holdup of foam generated in a gas-liquid contactor was measured under mechanical foam control with a rotating disk foam-breaker(MFRD), The results showed that liquid holdup of foam not only is an index of dynamic foaming state of the contactor but also provides a good measure for effective operation of MFRD.
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Yukito Murakami, Jun-ichi Kikuchi, Hiroaki Tenma
1985 Volume 14 Issue 1 Pages
103-106
Published: January 05, 1985
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The guest-binding efficiency of octopus-like azacyclophanes was examined with five different charge-transfer donors by means of fluorescence spectroscopy. Relative contributions of the hydro-phobic, electrostatic, and charge-transfer interactions in the overall guest-binding process were characterized.
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Yoshihisa Matsuda, Shuji Sakamoto, Toshihiko Takaki, Yukito Murakami
1985 Volume 14 Issue 1 Pages
107-110
Published: January 05, 1985
Released on J-STAGE: March 27, 2006
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The tri-μ-oxo dimer of (5,10,15,20-tetratolylporphinato)niobium(V), [Nb
V(ttp)]
2O
3, was reduced upon irradiation with the visible light in benzene containing an alcohol under anaerobic conditions, while the irradiation of the complex in benzene afforded oxygenated radical complexes under aerobic conditions.
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Jun Yamauchi, Yasuo Deguchi
1985 Volume 14 Issue 1 Pages
111-114
Published: January 05, 1985
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ENDOR spectra of di-
t-butyl nitroxide have been observed at −90 °C in heptane. Two ENDOR lines near the free proton frequency had different absorption intensities and their line-shape showed a clear dependence on the nitrogen spin quantum number. This indicates an important spin cross relaxation by the nitrogen nucleus in the proton spin system and suggests a negative sign of the proton hyperfine coupling constant.
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Koichi Mikami, Kazuya Kawamoto, Takeshi Nakai
1985 Volume 14 Issue 1 Pages
115-118
Published: January 05, 1985
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A simple synthesis of 20-epicholesterol is described which relies on the unprecedented β-face Claisen rearrangement of an
E−Δ
17(20)-16β-vinyloxy steroid leading exclusively to the “unnatural” 20
S chirality.
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Noriko Iwasaki, Yusei Maruyama, Susumu Kurihara, Ichimin Shirotani, Mi ...
1985 Volume 14 Issue 1 Pages
119-122
Published: January 05, 1985
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The electrical resistance of black phosphorus single crystals at low temperatures was analyzed as functions of temperature and magnetic field. Logarithmic dependence of the conductivity on both variables was found. This fact, together with the negative magnetoresistance observed at 4.2 K, suggests the existence of the two dimensional Anderson localization of valence-band holes in black phosphorus single crystals at low temperatures.
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Muneharu Miyake, Makoto Kirisawa, Norio Tokutake
1985 Volume 14 Issue 1 Pages
123-126
Published: January 05, 1985
Released on J-STAGE: March 27, 2006
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Diethyl 2-(3-oxo-2,3-dihydro-1,2-benzisosulfonazolyl)phosphonate is a highly reactive condensing agent, which provides good yield route to amides, esters, and thioesters from a variety of amines, active hydroxylamines, and thiols and acids.
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Masahiko Iyoda, Masahiro Sakaitan, Hiroki Otsuka, Masaji Oda
1985 Volume 14 Issue 1 Pages
127-130
Published: January 05, 1985
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Zerovalent nickel complex generated in situ by reduction of NiBr
2(PPh
3)
2 with zinc powder in the presence of Et
4NI was found to be an effective catalyst for homo-coupling of benzyl halides. The catalytic reactions proceeded smoothly in various solvents under mild conditions to afford dehalogenative-coupling products in good to high yields.
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Reizo Kato, Hayao Kobayashi, Akiko Kobayashi, Yukiyoshi Sasaki
1985 Volume 14 Issue 1 Pages
131-134
Published: January 05, 1985
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The crystal of (DBTTF)[Ni(dmit)
2] contains uniform, segregated stacks of cations and anions. A three dimensional network of closely spaced molecules leads to intermolecular overlap integrals of the HOMO and LUMO with small anisotropy. This compound is highly conductive and signs of overlap integrals along the two segregated stacks suggest that this compound is the first two-chain system with parallel band structure.
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Shinobu Itoh, Nobuyuki Kato, Yoshiki Ohshiro, Toshio Agawa
1985 Volume 14 Issue 1 Pages
135-136
Published: January 05, 1985
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Oxidation of thiols by coenzyme PQQ as a new enzymatic oxidation-reduction model was found to proceed catalytically under aerobic conditions to give corresponding disulfides.
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Shin Yagihara, Ryusuke Nozaki, Satoru Mashimo, Ken-iti Higasi
1985 Volume 14 Issue 1 Pages
137-140
Published: January 05, 1985
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Dielectric relaxation times of 1-propanol were measured in 1,4-dioxane and cyclohexane at 25 °C by the TDR method. Dielectric behavior of this alcohol varied greatly according to the nature of the solvent. A single relaxation process was observed when the hydrogen bonding solvent was employed, while two separate relaxation processes were found in the inert solvent.
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Shozo Yanagida, Hirotoshi Kizumoto, Yoshiteru Ishimaru, Chyongjin Pac, ...
1985 Volume 14 Issue 1 Pages
141-144
Published: January 05, 1985
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Nonmetallized ZnS catalizes efficiently the photochemical conversion of primary amines to secondary amines with liberation of ammonia under irradiation of the UV light of λ>290 nm. The conversion is interpreted as due to the two-hole-oxidation of primary amines to Schiff bases and their two-electron-reduction to secondary amines by the photogenerated electrons in ZnS.
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Shinya Nomoto, Kaoru Harada
1985 Volume 14 Issue 1 Pages
145-148
Published: January 05, 1985
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When a hydrogen-oxygen flame was kept in contact with an aqueous formic acid solution of unsaturated amines, carboxylation onto a double bond took place. This reaction revealed to be initiated by addition of a hydrogen atom to the double bond followed by coupling of the resulted substrate radical with a carboxyl radical.
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Makoto Shimura, Hiroshi Ogino, Nobuyuki Tanaka
1985 Volume 14 Issue 1 Pages
149-150
Published: January 05, 1985
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The hydrolysis of the Cr–C bond in
N-2-hydroxyethylethylene-diamine
N,
N′,
N′-triacetato(hydroxymethy1)chromium(III) (
1) obeyed the rate law, -d[
1]/d
t = (
k0 +
k1[H
+]) [
1] at
I = 1.0 (LiClO
4) and 25.0 °C, while the reaction of nitrilotriacetato(hydroxymethyl)aquachromium(III) (
2) obeyed -d[2]/d
t = {(
k0 +
k0L[L]) + (
k1 +
k1L[L])[H
+]}[
2], where L denotes H
n nta
(3−n)−.
View full abstract
