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Sukekazu Aratani, Masato Isogai, Atsushi Kakuta
1988 Volume 17 Issue 5 Pages
741-744
Published: May 05, 1988
Released on J-STAGE: March 27, 2006
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Thin films of 2-methyl-4-nitroaniline were prepared by an ionized cluster beam (ICB) technique. Their SEM photographs suggested that the ICB-deposited films are much denser than vacuum-deposited films. X-Ray diffraction patterns suggested that the control of a preferential orientation is possible by changing the substrate temperature.
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F. Arevalo, L. Castedo, B. R. Fernandez, A. Mouriño, L. Sarande ...
1988 Volume 17 Issue 5 Pages
745-748
Published: May 05, 1988
Released on J-STAGE: March 27, 2006
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We describe the reaction of new organocuprates of the form ArR
TCuLi (Ar an ortho-heterosubstituted non-transferable ligand), and their reactions with simple α,β-unsaturated ketones.
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Tetsuro Yabuki, Masanori Yasui, Hiroshi Tezuka, Shigeharu Harada, Nobu ...
1988 Volume 17 Issue 5 Pages
749-752
Published: May 05, 1988
Released on J-STAGE: March 27, 2006
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The
N,
N′-dimethylpiperazine molecule in the title crystals is bound by two chiral acetylenic alcohol molecules through the strong O–H···N hydrogen bonds. The symmetric 1:2 complex of
N,
N′-dimethylpiperazine with (+)- and (−)-1-(
o-chlorophenyl)-1-phenyl-2-propyn-1-ol(CPPOH), which is useful for the optical purification of partially resolved CPPOH, has the denser packing of molecules in the crystal than the asymmetric 1:2 complex of
N,
N′-dimethylpiperazine with two (−)-CPPOH.
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Ichiro Yamanaka, Kiyoshi Otsuka
1988 Volume 17 Issue 5 Pages
753-756
Published: May 05, 1988
Released on J-STAGE: March 27, 2006
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Partial oxidation of methanol in the gas phase applying the fuel cell system using Pt-bonded solid polymer electrolyte membrane produces methyl formate and methylal selectively with a trace of CO
2 at room temperature. The effect of pressures of O
2 (cathode), CH
3OH (anode) and of H
2O were examined. The increases in these pressures enhanced the rate of partial oxidation. In particular, the selectivity to methyl formate was improved with increasing the pressures of O
2 and H
2O.
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Y. Fort, R. Vanderesse, P. Caubere
1988 Volume 17 Issue 5 Pages
757-760
Published: May 05, 1988
Released on J-STAGE: March 27, 2006
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Selective hydrogenation of carbon–carbon double bond can be easily performed by simultaneous addition of substrate and Me
3SiCl or water to NiCRA. It is shown that it is possible to reduce dienes selectively in olefins and carbon–carbon double bond in the presence of carbonyl, ester or acid groups.
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Masahiko Matsukata, Shigeyuki Uemiya, Eiichi Kikuchi
1988 Volume 17 Issue 5 Pages
761-764
Published: May 05, 1988
Released on J-STAGE: March 27, 2006
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A high activity and stability for steam reforming of methanol were attained with a copper–alumina catalysts prepared by the coprecipitation method, particularly with those composed of a copper–alumina spinel (CuAl
2O
4) formed by calcination at relatively high temperatures (773–973 K).
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Noriaki Ohkita, Tatsuru Namikawa, Yohtaro Yamazaki
1988 Volume 17 Issue 5 Pages
765-768
Published: May 05, 1988
Released on J-STAGE: March 27, 2006
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Thin films of uracil were prepared by vacuum evaporation. The stacking structure of the molecules in the films were investigated using a transmission electron microscope(TEM) and electron diffraction analysis. The films showed a substantially higher sensitivity for ultraviolet(UV) light irradiations.
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Masatoshi Hirayama, Akihiko Seki, Yoshiro Yamashita, Takanori Suzuki, ...
1988 Volume 17 Issue 5 Pages
769-772
Published: May 05, 1988
Released on J-STAGE: March 27, 2006
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The radical trianion of title compound as well as its radical anion was formed by electrolytic reduction of its neutral precursor in acetonitrile at room temperature and characterized by their ESR and calculated spin density distributions.
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Xinfei Xu, Masanao Era, Tetsuo Tsutsui, Shogo Saito
1988 Volume 17 Issue 5 Pages
773-776
Published: May 05, 1988
Released on J-STAGE: March 27, 2006
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With three azobenzene-linked amphiphiles containing designed alkyl and methylene groups, spectroscopic studies on monolayer at the air–water interface were performed. The effects of the alkyl and methylene groups on the molecular orientation and aggregate states in the monolayers were shown.
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Shinnichiro Suzuki, Takeshi Sakurai, Shinobu Itoh, Yoshiki Ohoshiro
1988 Volume 17 Issue 5 Pages
777-780
Published: May 05, 1988
Released on J-STAGE: March 27, 2006
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The ternary copper(II) complex containing reduced coenzyme PQQ (PQQH
2) and bipyridine or terpyridine was prepared and characterized by electronic absorption and electron paramagnetic resonance (EPR) spectroscopy. The structures of these complexes are quite similar to those of the corresponding ternary complexes containing PQQ (oxidized form), in which the binding of PQQ to Cu(II) through N(6) and COO
−(7) groups has been proposed.
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Gene-Hsiang Lee, Yu Wang, Koichi Tanaka, Fumio Toda
1988 Volume 17 Issue 5 Pages
781-784
Published: May 05, 1988
Released on J-STAGE: March 27, 2006
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In order to clarify the reason for high chiral recognition ability of optically active 10,10′-dihydroxy-9,9′-biphenanthryl to guest compounds, X-ray crystal structural study of the title complex was carried out.
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Hiroyuki Niino, Kenji Takehara, Kazuaki Isomura, Hiroshi Taniguchi, Ma ...
1988 Volume 17 Issue 5 Pages
785-786
Published: May 05, 1988
Released on J-STAGE: March 27, 2006
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Two amphiphilic compounds, 5-(
p-hexadecylphenyl)pyrazin-2-oxyacetic acid (
1) and
p-(5-hexadecylpyrazin-2-yl)phenoxyacetic acid (
2), were newly synthesized. The mixture of
1 and
2 formed more closely packed monolayer than pure
1 or
2 did. This phenomenon was revealed to be caused by complete mixing due to the attractive interaction between reversely oriented chromophores of
1 and
2.
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Kenji Ichimura, Mizuka Sano
1988 Volume 17 Issue 5 Pages
787-790
Published: May 05, 1988
Released on J-STAGE: March 27, 2006
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VPS
3 and V
0.78PS
3 have been synthesized by calcination of elementary mixtures prepared in the ratios of V:P:S = 1:1:3 and 0.78:1:3, respectively. Their X-ray diffraction patterns indicate that they have the same crystalline structure and orientation of crystal growth. The X-ray photoelectron spectra of V2p show that the vanadium in V
0.78PS
3 is in a mixed valence state and the compound is expressed by the formula of (V
0.32+V
0.73+)
0.78PS
3.
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Fikret Kirkbir, Hiroshi Komiyama
1988 Volume 17 Issue 5 Pages
791-794
Published: May 05, 1988
Released on J-STAGE: March 27, 2006
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At sufficiently high H
2O concentration, titanium isopropoxide vapor could almost completely be hydrolyzed to form submicron-size TiO
2 powder at a reaction temperature as low as 380 K with little deposition inside a tubular-flow reactor, indicating a highly efficient method for preparation of powders.
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Shoji Kajigaeshi, Takaaki Kakinami, Masayuki Moriwaki, Masakazu Watana ...
1988 Volume 17 Issue 5 Pages
795-798
Published: May 05, 1988
Released on J-STAGE: March 27, 2006
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The reaction of aromatic ethers with benzyltrimethylammonium dichloroiodate(1-) in acetic acid in the presence of zinc chloride at room temperature gave iodo-substituted aromatic ethers in good yields.
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Kenji Tabata, Hiroshi Fukuda, Shigemi Kohiki, Noritaka Mizuno, Makoto ...
1988 Volume 17 Issue 5 Pages
799-802
Published: May 05, 1988
Released on J-STAGE: March 27, 2006
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A large quantity (2.5–3 in molar ratio) of NO was taken up from gas phase by YBa
2Cu
3O
y (y=6.88) at 573 K, and desorbed mostly as NO at 773 K. The rate of uptake at 573 K increased with the increase in the concentration of coexisting O
2 upto 8%, or by treating the sample in N
2 above 850 K. The addition of Pd (0.1%) to YBa
2Cu
3O
y greatly accelerated the rate of NO uptake.
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Haruhiko Tada, Takehiko Tozyo
1988 Volume 17 Issue 5 Pages
803-804
Published: May 05, 1988
Released on J-STAGE: March 27, 2006
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Extremely unstable bromopyrrole metabolites were isolated from a sponge
Agelas sp. and characterized as 2,3-dibromopyrrole and 2,3-dibromo-5-methoxymethylpyrrole.
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Morio Asaoka, Naoaki Fujii, Kunihisa Shima, Hisashi Takei
1988 Volume 17 Issue 5 Pages
805-808
Published: May 05, 1988
Released on J-STAGE: March 27, 2006
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1,4-Adducts of 5-trimethylsilyl-2-cyclohexenone (
1) with Grignard reagents were converted to various hexanoate derivatives and γ-butyrolactones. Starting from optically pure
1, (−)-enterolactone (Factor X) was synthesized.
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Satoshi Hyuga, Naoko Yamashina, Shoji Hara, Akira Suzuki
1988 Volume 17 Issue 5 Pages
809-812
Published: May 05, 1988
Released on J-STAGE: March 27, 2006
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(
E)-(2-Bromoethenyl)diisopropoxyborane is a useful precursor for the synthesis of (
E)-olefins by the stepwise cross-coupling reaction with organozinc chlorides and then with organic halides in the presence of a base, both catalyzed by Pd complex.
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Katsuhiko Inomata, Hiroshi Suhara, Hideki Kinoshita, Hiroshi Kotake
1988 Volume 17 Issue 5 Pages
813-816
Published: May 05, 1988
Released on J-STAGE: March 27, 2006
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It was found that α-cyanovinylsulfones, which were prepared by an improved Knoevenagel condensation, react readily with 1,3-dioxolane under ultraviolet irradiation in the presence of a photosensitizer. The reaction provided a new convenient method for the preparation of 3,4-disubstituted pyrroles.
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Masahiko Takahashi, Hiroyasu Kikuchi
1988 Volume 17 Issue 5 Pages
817-818
Published: May 05, 1988
Released on J-STAGE: March 27, 2006
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A new ring transformation reaction of 1,2,4,5-tetrazines to 1,2,4-triazin-5-ols and -5-thiols on treatment with isocyanato- and isothiocyanatotrimethylsilane, respectively, is described.
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Takashi Ishihara, Yoshiji Okada, Manabu Kuroboshi, Takao Shinozaki, Te ...
1988 Volume 17 Issue 5 Pages
819-822
Published: May 05, 1988
Released on J-STAGE: March 27, 2006
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The treatment of
F-alkyl ketones with sodium diethyl phosphite in tetrahydrofuran at −10 to 0 °C gave high yields of 1-substituted
F-1-alkenyl phosphates, which readily reacted with amidine or hydrazine derivatives at room temperature to afford the corresponding fluorinated pyrimidines or pyrazoles, respectively, in good to excellent yields.
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Keiji Matsumoto, Hideyuki Nakano, Shun’ichiro OOI
1988 Volume 17 Issue 5 Pages
823-826
Published: May 05, 1988
Released on J-STAGE: March 27, 2006
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X-Ray structure analysis of [Ni
3S(SPh)
6]
2− has revealed that a central μ
3-S and three Ni atoms form a trigonal pyramid, a μ-SPh ligand bridges each pair of the three Ni atoms situated at the apexes of a triangle, and each Ni is terminally coordinated by SPh, completing a trinuclear complex. The stereochemistry around Ni is tetrahedrally distorted square planar.
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Nobuo Kimizuka, Toyoki Kunitake
1988 Volume 17 Issue 5 Pages
827-830
Published: May 05, 1988
Released on J-STAGE: March 27, 2006
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Examination of the surface monolayer on pure water or on aqueous polyanion of two azobenzene-containing compounds by the pressure-area isotherm and absorption spectroscopy established the controlled formation of surface microcrystals, islands, liquid expanded films, and condensed films.
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Hiroshi Naraoka, Akira Shimoyama, Masatoshi Komiya, Hiroshi Yamamoto, ...
1988 Volume 17 Issue 5 Pages
831-834
Published: May 05, 1988
Released on J-STAGE: March 27, 2006
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Yamato-791198 yielded up to 44 aromatic hydrocarbons and related compounds in the range of naphthalene and pyrene, including almost all structural isomers of methyl- and dimethyl-naphthalene. Several predominant compounds were present at the level of 10
−7 g/g. Normal alkanes(C
12−C
22) were predominant in the aliphatic hydrocarbons and were at the level of 10
−8 g/g.
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Yukito Murakami, Yoshio Hisaeda, Sheng-Di Fan, Yoshihisa Matsuda
1988 Volume 17 Issue 5 Pages
835-838
Published: May 05, 1988
Released on J-STAGE: March 27, 2006
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The cobalt complex of 2,10-diethyl-3,9-dipropyl-1,4,8,11-tetraazaundeca-1,3,8,10-tetraene-1,11-diol catalyzed electrolyses of alkyl halides with electron-withdrawing groups at the β-position to afford rearrangement products via oxidation of the corresponding dialkylated complexes as intermediates.
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Yukito Murakami, Yoshio Hisaeda, Toshiaki Ozaki, Teruhisa Ohno, Sheng- ...
1988 Volume 17 Issue 5 Pages
839-842
Published: May 05, 1988
Released on J-STAGE: March 27, 2006
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The cyanide ion induced the heterolytic cleavage of the cobalt–carbon bond involved in vitamin B
12 model complexes by its coordination to the central cobalt atom and enhanced the carbon-skeleton rearrangements via formation of anionic intermediates under anaerobic irradiation with the visible light.
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Kenso Soai, Shuji Yokoyama, Tomoiki Hayasaka, Katsumi Ebihara
1988 Volume 17 Issue 5 Pages
843-846
Published: May 05, 1988
Released on J-STAGE: March 27, 2006
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Optically active 4-alkyl-γ-butyrolactones and 5-alkyl-δ-valerolactones were obtained in high enantiomeric excesses (85–95% e.e.) from the catalytic asymmetric alkylation of 3- and 4-formylesters with dialkylzincs using
N,
N-dibutylnorephedrine as catalyst.
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Hitomi Suzuki, Toshihiro Murafuji, Takuji Ogawa
1988 Volume 17 Issue 5 Pages
847-848
Published: May 05, 1988
Released on J-STAGE: March 27, 2006
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The title two bismuthonium ylides were obtained in pure form and their reactions with some electrophiles were studied. In contrast with stable ylides of arsenic and antimony, these bismuthonium ylides readily react with aldehydes and isothiocyanates but they are inert towards ketones.
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Takuji Ogawa, Toshihiro Murafuji, Hitomi Suzuki
1988 Volume 17 Issue 5 Pages
849-852
Published: May 05, 1988
Released on J-STAGE: March 27, 2006
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Stabilized bismuthonium ylides, triphenylbismuthonio-4,4-dimethyl-2,6-dioxocyclohexane-1-ide and triphenylbismuthonio-4,4-dimethyl-2,6-dioxo-3,5-dioxan-1-ide, react with aldehydes to afford three types of products; tetraacylcyclopropanes, dihydrofurans, and α,β-unsaturated carbonyl compounds, the relative importance of these depending greatly on the ylides, aldehydes, and reaction conditions employed.
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Kenji Uneyama, Kunimasa Ueda
1988 Volume 17 Issue 5 Pages
853-854
Published: May 05, 1988
Released on J-STAGE: March 27, 2006
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Electrochemically generated trifluoromethyl radical can be trapped with enolacetates and enol generated in situ from β-ketoesters and 1,3-diketones, affording trifluoromethylated active methylene compounds.
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Satoru Hokama, Junichi Tanaka, Tatsuo Higa, Nobuhiro Fusetani, Minao A ...
1988 Volume 17 Issue 5 Pages
855-856
Published: May 05, 1988
Released on J-STAGE: March 27, 2006
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A bioactive metabolite, ginamallene, has been isolated from four species of
Acalycigorgia and shown to be a xenicin-type norditerpene having a terminal allene functionality.
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Hiroshi Takaku, Kazuaki Imai, Masato Nagai
1988 Volume 17 Issue 5 Pages
857-860
Published: May 05, 1988
Released on J-STAGE: March 27, 2006
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The selective protection of the N
3-imido group of uridine with triphenymethanesulfenyl group is described. This group could be introduced selectively onto the N
3-position of the uracil moiety of 3′,5′-
O-(tetraisopropyldisiloxane-1,3-diyl)uridine in a good yield and removed very easily by treatment with aqueous iodine.
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Sadao Miki, Toshiro Maruyama, Toshinobu Ohno, Toshihiko Tohma, Shin-ic ...
1988 Volume 17 Issue 5 Pages
861-864
Published: May 05, 1988
Released on J-STAGE: March 27, 2006
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N,
N′-Disalicylidene-4-carboxy-1,2-phenylenediiminatocobalt(II) supported on polyaminesulfone modified alumina beads has been prepared. The immobilized complex revealed efficient catalysis for the conversion of trimethyldicyanoquadricyclane (TMDC-Q) to the corresponding norbornadiene (TMDC-NBD). Using a bench-scale fixed bed reactor, TMDC-Q in chlorobenzene (1 mol dm
−3) isomerized to TMDC-NBD quantitatively during the flow through catalyst bed of only 20 cm with the temperature increase from 24.5 °C to 75 °C.
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Reizo Kato, Hayao Kobayashi, Hyerjoo Kim, Akiko Kobayashi, Yukiyoshi S ...
1988 Volume 17 Issue 5 Pages
865-868
Published: May 05, 1988
Released on J-STAGE: March 27, 2006
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The anion radical salt α-Et
2Me
2N[Ni(dmit)
2]
2 retains metallic behavior down to 1.5 K. Planar Ni(dmit)
2 units lying side-by-side along the b axis stack along the c axis in such a way that one molecule overlaps with two molecules. Such a “spanning overlap” mode has provided two-dimensional electronic structure.
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Feng-Yuen Dai, Kenzo Deguchi, Minoru Suzuki, (late)Hiroshi Takahashi, ...
1988 Volume 17 Issue 5 Pages
869-872
Published: May 05, 1988
Released on J-STAGE: March 27, 2006
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High resolution
29Si NMR spectra of silica sols and water glass in addition to a wide survey of hydrothermal zeolite syntheses from them with no aid of organic templates brought forth such a view that pentasil zeolite phases to be formed are contrlled at the aging stage of room temperature in the liquid phase. Pure ZSM-5 crystals were synthesized at high yields, only when a small-sized silica sol(10–20 nm) was used, indicating that appropriate amounts of silicate species(Q
2 and Q
3) are required to react with aluminate at room temperature in the alkaline solution.
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Kazutoshi Ikenaga, Satoshi Matsumoto, Kiyoshi Kikukawa, Tsutomu Matsud ...
1988 Volume 17 Issue 5 Pages
873-876
Published: May 05, 1988
Released on J-STAGE: March 27, 2006
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α-Trialkylsilylstyrenes[Ph(R
3Si)C=CH
2: R=Me(
1), Et(
2), and Ph (
3)] easily reacted with arenediazonium tetrafluoroborates[ArN
2+BF
4− (
4)] to give (E)-PhCH=CHAr under palladium(0) catalysis. The bulky substituents on silicon gave better stereoselectivity.
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Hiroshi Furukawa, Teiji Nakamura, Hiroyuki Inagaki, Eiichiro Nishikawa ...
1988 Volume 17 Issue 5 Pages
877-880
Published: May 05, 1988
Released on J-STAGE: March 27, 2006
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12-Heteropoly acids exhibited high performance for selective oxidation of cyclopentene to glutaraldehyde with hydrogen peroxide. Especially, heteropoly acids with mixed addenda atoms of Mo and W, H
3PMo
12−xW
xO
40(x=1–9), showed excellent results.
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Kiyoshi Kikukawa, Hideto Umekawa, Fumio Wada, Tsutomu Matsuda
1988 Volume 17 Issue 5 Pages
881-884
Published: May 05, 1988
Released on J-STAGE: March 27, 2006
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Rhodium complexes (RhClL
3, RhCl(CO)L
2, [RhCl(COD)]
2; L=PPh
3) catalyze hydrostannation of terminal acetylenes (RC≡CH; R=Ph, Me
3Si, R
1OC(R
2)(R
3), and R
1OCH
2CH
2; R
1=THP, OAc; R
1, R
2=H, Me) with Bu
3SnH to produce R(Bu
3Sn)C=CH
2 selectively. Other transition metal complexes [MCl
2L
2(M=Ni, Pd, Pt, Co)] are also active for the hydrostannation, but with less selectivity.
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Toshiyasu Sakakura, Yuko Tokunaga, Touru Sodeyama, Masato Tanaka
1988 Volume 17 Issue 5 Pages
885-888
Published: May 05, 1988
Released on J-STAGE: March 27, 2006
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Dienes were formed by the dehydrogenative coupling of olefins via the photocatalyzed C–H activation in the presence of RhCl(CO)(PMe
3)
2 at an ambient temperature.
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Seiichiro Ogawa, Yasunobu Miyamoto
1988 Volume 17 Issue 5 Pages
889-890
Published: May 05, 1988
Released on J-STAGE: March 27, 2006
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(+)-Validoxylamine A was synthesized by selective deoxygenation of (+)-validoxylamine B derivative, which was obtained by the coupling of the partially protected (+)-valienamine and (1
R,2
S,5
R,7
R,8
R,9
R,10
R)-8,9-dibenzyloxy-5-phenyl-4,6,11-trioxatricyclo[8.1.0.0
2,7]undecane. The present synthesis constitutes a formal total synthesis of antibiotic validamycin A.
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Syun-ichi Kiyooka, Takuya Atagi, Ryoji Fujiyama, Kiyoshi Isobe
1988 Volume 17 Issue 5 Pages
891-894
Published: May 05, 1988
Released on J-STAGE: March 27, 2006
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The oxidation of tetramethylbutatriene(hexacarbonyl)diiron in alcohols by eerie ammonium nitrite regioselectively gives diene-diesters and acetylene-diethers in moderate yields. The reaction is the first example showing that both the carbonylation and etherification of cumulene ligand with solvent alcohols take place concurrently on cationic 17-electron species.
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Minoru Sakurai, Masaki Kitagawa, Hajime Hoshi, Yoshio Inoue, Riichir&o ...
1988 Volume 17 Issue 5 Pages
895-898
Published: May 05, 1988
Released on J-STAGE: March 27, 2006
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On the basis of electrostatic potential maps of α-cyclodextrin(α-CD), the origin of the large dipole moment of α-CD is explained. It is also pointed out that electrostatic properties inside the cavity vary dramatically depending on the conformation of the macrocyclic ring of α-CD.
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Ryu OI, Chitoshi Shimakawa, Shinji Takenaka
1988 Volume 17 Issue 5 Pages
899-900
Published: May 05, 1988
Released on J-STAGE: March 27, 2006
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The condensation of
m-hydroxybenzyl alcohol with chlorobenzene was examined in several different solvents, and an effective route to
m-phenoxybenzyl alcohol has been developed by using 1,3-dimethyl-2-imidazolidinone (DMI) as a solvent.
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Kazuo Doyama, Keisuke Fujiwara, Takashi Joh, Kazuo Maeshima, Shigetosh ...
1988 Volume 17 Issue 5 Pages
901-904
Published: May 05, 1988
Released on J-STAGE: March 27, 2006
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Carbonylation of phenylacetylene derivatives by a cobalt catalyst under water gas shift conditions affords indan-1-ones in satisfactory yields.
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