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Makoto Yoshitake, Hiroyuki Kobayashi, Makoto Yamamoto, Shigeo Kohmoto, ...
1991 Volume 20 Issue 11 Pages
1865-1868
Published: 1991
Released on J-STAGE: March 27, 2006
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Hydrolysis of glycidyl benzoates in the presence of BF
3·OEt
2 in CH
2Cl
2 affords regioisomeric triol mono benzoates, their ratios remarkably change depending on the temperature particularly in the reaction of 3,3-dimethylglycidyl benzoate.
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Kazuhiko Naitoh, Tsuguo Yamaoka, Akira Umehara
1991 Volume 20 Issue 11 Pages
1869-1872
Published: 1991
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Diphenyliodonium 9,10-dimethoxyanthracene-2-sulfonate is photochemically dissociated to give 9,10-dimethoxyanthracene-2-sulfonic acid. The dissociation is considered to proceed via an intra-ion-pair electron transfer from 9,10-dimethoxyanthracene moiety to iodonium moiety. The counteranion acts as both spectral sensitizer for diphenyliodonium ion and precursor for photo-acid generator.
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Masafumi Hirano, Akira Miyashita, Hiroaki Shitara, Hiroyuki Nohira
1991 Volume 20 Issue 11 Pages
1873-1876
Published: 1991
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5-Methoxy-3-methyl-6′-nitrospirobenzoselenazolinobenzopyrans have been newly prepared and their reversible structure changes induced by light were characterized by spectroscopic studies. Their stable colored-forms were identified as 5-methoxy-3-methylbenzoselenazolenium-2-
trans-(5′-nitrostyryl-2′-oxide) being the zwitterionic structure.
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Kuninobu Kasuga, Hiroki Hayashi, Makoto Handa
1991 Volume 20 Issue 11 Pages
1877-1880
Published: 1991
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Tetrakis(2-trimethylaminoethoxy)phthalocyaninatozinc(II) iodide catalyzed photoreduction of methyl viologen with visible light in the presence of triethanolamine in an aqueous solution. The effects of an ionic strength, pH, and polarity of solvents on the photoreaction were also investigated.
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Hideto Tsuji, Fuyuki Yagi, Hideshi Hattori
1991 Volume 20 Issue 11 Pages
1881-1884
Published: 1991
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The X type zeolites containing alkali ions in excess of ion exchange capacity exhibited high catalytic activity for 1-butene isomerization; the reaction proceeded at 273 K. Temperature programed desorption (TPD) of adsorbed CO
2 confirmed that strongly basic sites were generated by addition of alkali ions. Alkali metal oxides formed in the zeolite cavities are considered to possess strongly basic sites and to act as the catalytic sites.
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Mikio Nakamura, Nobuo Nakamura
1991 Volume 20 Issue 11 Pages
1885-1888
Published: 1991
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Sterically very hindered 2-methylbenzimidazole can bind high spin
meso-tetraarylporphinatoiron(III) chloride to form a bis-ligated complex if the
meso-aryl groups carry alkyl groups at 2,6-positions. The spin state and ligand orientation of this complex are discussed based on the NMR and EPR spectra.
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Kahee Fujita, Takashi Ishizu, Noshi Minamiura, Takehiko Yamamoto
1991 Volume 20 Issue 11 Pages
1889-1892
Published: 1991
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2,6-di-
O-Disulfonates were prepared by the reaction of 2-
O-(mesitylsulfonyl)-β-cyclodextrin with mesitylsulfonyl chloride in pyridine. Each regioisomer was isolated and the 2
A,6
E-isomer was structurally determined through enzymatic hydrolysis by Taka amylase A and bacterial saccharifying amylase.
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Takashi Ito, Tadayuki Tokunaga, Makoto Minato, Takashi Nakamura
1991 Volume 20 Issue 11 Pages
1893-1896
Published: 1991
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Cp
2MoH(OTs) (Cp = η-C
5H
5, Ts =
p-CH
3C
6H
4SO
2), which was prepared from Cp
2MoH
2 by its treatment with TsOH in EtOH, reacted with tertiary phosphines and phosphite to give cationic [Cp
2MoH(PR
3)]
+TsO
− where R = Ph, Et, OEt, Cy, and Bu
n. Deprotonation of the latter with NaOH in EtOH afforded Cp
2Mo(PR
3); X-ray structure (R = Bu
n) and some reactions including those with alkyl halides and with H
2 to revert to Cp
2MoH
2 of which were studied.
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Satoshi Konuma, Shin Aihara, Yasunao Kuriyama, Hiroaki Misawa, Ryoichi ...
1991 Volume 20 Issue 11 Pages
1897-1900
Published: 1991
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Pulsed laser excitation studies on the reactive species in 9-cyanoanthracene(CNA)-sensitized oxygenation of 1,1-diphenyl-2-methylpropene (
1a) and (
E)-2,3-diphenyl-2-butene (
1b) show that the reaction course is mostly governed by competitive quenching of the CNA excited singlet by
1 and oxygen to produce
1+• and
1O
2, respectively. The results indicate that the reaction courses of tetraphenylethylene and 2,3-dimethyl-2-butene, for example, can be explained by exclusive quenching of sensitizer singlets by the olefin and oxygen, respectively.
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Teruaki Mukaiyama, Isamu Shiina, Shu Kobayashi
1991 Volume 20 Issue 11 Pages
1901-1904
Published: 1991
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syn-α,β-Dihydroxy thioesters are prepared in good yields with high diastereo- and enantioselectivities by the asymmetric aldol reaction of 1-trimethylsiloxy-1-ethylthio-2-t-butyldimethylsiloxyethene with aldehydes using a chiral promoter consisting of tin(II) triflate, a chiral diamine and dibutyltin diacetate.
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Shunichi Fukuzumi, Yoshihiro Tokuda, Morifumi Fujita
1991 Volume 20 Issue 11 Pages
1905-1908
Published: 1991
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The C–C single bonds of 9-alkyl-10-methyl-9,10-dihydroacridines [AcrHR: R = 1-naphthylmethyl, diphenylmethyl, and AcrH (dimer)] are readily cleaved by perchloric acid in acetonitrile under irradiation of the absorption band of AcrHR to yield the corresponding alkane (RH) and 10-methylacridinium ion (AcrH
+).
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Shunichi Fukuzumi, Yoshihiro Tokuda
1991 Volume 20 Issue 11 Pages
1909-1912
Published: 1991
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Rates of Electron-transfer (ET) reactions from 10,10′-dimethyl-9,9′-biacridine [(AcrH)
2] to various inorganic and organic one-electron oxidants depend solely on the one-electron reduction potentials of the oxidants irrespective of the size of the oxidants, indicating that (AcrH)
2 acts as a novel outer-sphere organic ET reagent.
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Shunichi Fukuzumi, Tomohiro Yorisue
1991 Volume 20 Issue 11 Pages
1913-1916
Published: 1991
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The reduction of nitric acid to nitrous acid by an acid-stable NADH analogue proceeds autocatalytically in the presence of perchloric acid in acetonitrile
via novel chain reactions where the reduction of one nitrous acid in the presence of nitric acid eventually results in the formation of two nitrous acid.
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Masashi Takiya, Mari Ishii, Koichi Shibata, Yuji Mikami, Oyo Mitsunobu
1991 Volume 20 Issue 11 Pages
1917-1920
Published: 1991
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4,6-O-Benzylidene-1,2-dideoxy-
D-threo-hex-1-enopyranose-3-urose reacted with allylic organometallic reagents, CH
2=CR–CH
2–Metal [R = H or CH
3; Metal = MgCl, AlEt
2, or Ti(OPr
i)
3], to selectively give 4,6-O-benzylidene-1,2-dideoxy-3-C-(2-propenyl- or 2-methyl-2-propenyl)-
D-lyxo-hex-1-enopyranose. On the other hand, the erythro isomer gave 3-C-(2-propenyl- or 2-methyl-2-propenyl)-
D-arabino-hex-1-enopyranose and the corresponding ribo isomer in a ratio ranging from 1 : 1 to 10 : 1
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C. Akira Horiuchi, Hirotada Fukunishi, Mika Kajita, Akihisa Yamaguchi, ...
1991 Volume 20 Issue 11 Pages
1921-1924
Published: 1991
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The reaction of 2-cyclohexen-1-one derivatives with iodine–cerium(IV) ammonium nitrate in alcohols (methanol, ethanol, 1-propanol, 2-propanol, and 1-butanol) under refluxing, gave the corresponding alkyl phenyl ethers in good yields. In the case of diol (ethylene glycol, 1,3-propanediol, and 1,4-butanediol), phenoxyalkanol derivatives were obtained. The present method was also applicable to oxidative rearrangement of isophorone.
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Reiko Azumi, Mutsuyoshi Matsumoto, Yasujiro Kawabata, Toshiaki Ichimur ...
1991 Volume 20 Issue 11 Pages
1925-1928
Published: 1991
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Surface images of vesicles of synthetic surfactant, vesicles of thylakoid membrane isolated from thermophilic cyanobacteria, and whole cells of bacteria,
E. coli were obtained using atomic force microscopy (AFM). The AFM proved itself to be useful in direct observations for molecular assemblies of biological interest.
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Masatatsu Suzuki, Yoshihito Hayashi, Kazutoshi Munezawa, Machiko Suena ...
1991 Volume 20 Issue 11 Pages
1929-1932
Published: 1991
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A dimer of di(μ-oxo)dimanganese(III,IV) dimers with two coordinated water molecules, [{Mn
2(tmdp)(O)
2(H
2O)}
2] (CF
3SO
3)
4·6H
2O, was prepared, where Htmdp is 1,5-bis[bis(2-pyridylmethyl)amino]-3-pentanol, and its crystal structure was determined by X-ray structure analysis. The complex cation consists of two di(μ-oxo)Mn
2(III,IV) dimers which are linked by two tmdps to form a dimer of dimers with a bilayered structure.
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Yoshinori Naruta, Nobuo Ishihara, Fumito Tani, Kazuhiro Maruyama
1991 Volume 20 Issue 11 Pages
1933-1936
Published: 1991
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“Twin-coronet” porphyrins bearing optically active 1,1′-bitetrahydronaphthalene derivatives on the both faces of the porphyrin were prepared as enantioselective oxidation catalysts modeling on cytochrome P-450s. The eclipsed isomer of the corresponding iron(III) porphyrins catalyzed epoxidation of styrenes substituted with electron-withdrawing groups in high e.e. (61–89%) and high product selectivity.
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Yukio Masaki, Tsuyoshi Miura, Isao Mukai, Akichika Itoh, Hirohisa Oda
1991 Volume 20 Issue 11 Pages
1937-1940
Published: 1991
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A combination system of ethyl cyanoformate and hydrogen peroxide was found to epoxidize olefins in a stereospecific manner at room temperature. Asymmetric epoxidation was observed with menthyl cyanoformate/hydrogen peroxide system.
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Kazuo Shinozuka, Tsutomu Morita, Yoshiki Hirota, Hiroaki Sawai
1991 Volume 20 Issue 11 Pages
1941-1944
Published: 1991
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α-2′-Deoxyoctathymydilic acid phosphorothioate analog bearing 3′-monophosphate was conveniently synthesized
via phosphoramidite method using a riboadenosine attached Teflon-based solid support. The obtained oligomer exhibited enhanced stability toward the digestion by common nucleases.
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Toshio Naito, Akihito Miyamoto, Hayao Kobayashi, Reizo Kato, Akiko Kob ...
1991 Volume 20 Issue 11 Pages
1945-1948
Published: 1991
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Four types of the crystals of BEDT-TSeF (“BETS”) salts with bromomercurate anions were synthesized electrochemically. The salts with θ- and κ-type molecular arrangements retain high conductivity down to 4 K.
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Takuo Sone, Minor Iwata, Noriko Kasuga, Sanshiro Komiya
1991 Volume 20 Issue 11 Pages
1949-1952
Published: 1991
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Cis-dimethyl(aryloxo or alkoxo)(triphenylphosphine)gold(III),
cis-AuMe
2(OR)(PPh
3) (R = Ph, tol, CH
2CF
3, CH(CF
3)
2) were isolated by the reaction of
cis-AuMe
2[(PPh
3) with corresponding potassium aryloxides or alkoxides. Nucleophilic phenoxogold(III) smoothly traps phenol by hydrogen bond and can abstract a proton from methyl cyanoacetate, malononitrile and phenyl acetylene to give corresponding
cis-dimethyl(organo)(triphenylphosphine)gold(III) complexes,
cis-AuMe
2(R′)(PPh
3).
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Yutaka Nakamura, Chung-gi Shin
1991 Volume 20 Issue 11 Pages
1953-1956
Published: 1991
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The stereoselective synthesis of (3
S)-2,3,4,5-tetrahydropyridazine-3-carboxylic acid (Pya), which is a cyclic α-amino acid at center of antrimycins (
1), was successful. Moreover, the synthesis of the C-terminal dehydrotetrapeptide of
1 containing Pya residue at N-terminus is described.
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Jean-François Huot, Francis Outurquin, Claude Paulmier
1991 Volume 20 Issue 11 Pages
1957-1960
Published: 1991
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β-Azido α-phenylseleno aldehydes were isolated as adducts of PhSeN
3 on conjugated enals bearing an α-alkyl substituent. Their oxidation leads to 2-alkylidene-3-azido propanals and propionic acids. An allylic rearrangement of the azido group was observed.
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Lucien Lalloz, Régis Vanderesse, Bertrand Mayesky, Paul Caubere
1991 Volume 20 Issue 11 Pages
1961-1964
Published: 1991
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Reduction of arylketones with a Complex Reducing Agent containing 2 equivalents of Zn° and 4 equivalents of sodium chiraldate in a mixture of THF and methylcyclohexane for 1 equivalent of arylketone took place with a chiral induction from 56 to 89% of enantiomeric excess.
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Masao Okubo, Mikio Tanaka, Yuri Murata, Nobuyuki Tsurusaki, Yasumasa O ...
1991 Volume 20 Issue 11 Pages
1965-1968
Published: 1991
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Some symmetrical and unsymmetrical form- and benzamidines were prepared by the reaction of ArN(MgBr)
2 with Ar’CN, HCONMe
2 and related compounds in tetrahydrofurn.
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Seiji Ujiie, Kazuyoshi Iimura
1991 Volume 20 Issue 11 Pages
1969-1972
Published: 1991
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Liquid-crystalline ionic polyethylenimine derivatives have been synthesized, and their thermal properties and dielectric behavior have been studied. They exhibited thermotropic smectic phases. The ferroelectric like behavior was confirmed by dielectric measurement and observation of the hysteresis loop with the Sawyer-Tower circuit.
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Masahiko Kato, Yoshimasa Amatatsu, Hitoshi Tada, Shigeru Tanaka, Kimia ...
1991 Volume 20 Issue 11 Pages
1973-1976
Published: 1991
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The title compound was prepared via a route involving dehydrogenative phenylsulfidation. The NMR and electronic spectra and reduction potential were discussed in comparisons with those of the unsubstituted and monosubstituted analogs. The structure was examined by X-ray crystallography.
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Kazuhiro Takahashi, Hiroshi Tanino
1991 Volume 20 Issue 11 Pages
1977-1980
Published: 1991
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The bromo-bridged one-dimensional chain structure of [AuBr
2(DBS)] is revealed by X-ray analysis. The bromo-bridged skeleton of the one-dimensional chain of [AuBrCl(DBS)] is identified by comparing its unit cell parameters, visible absorption spectrum on nujol mull, and Br K near-edge X-ray absorption spectra with those of [AuBr
2(DBS)].
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Lourdes Hernan, Julián Morales, Jayasree Pattanayak, José ...
1991 Volume 20 Issue 11 Pages
1981-1984
Published: 1991
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New “SnVSe
3” and “SnNb
2Se
5” phases have been synthesized from the corresponding elements. The structure of these compounds may be described as a mixed sandwiched layered type where one [SnSe] slab alternates with one [VSe
2] slab for SnVSe
3 and with two [NbSe
2] slabs for SnNb
2Se
5.
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Yoshihumi Kusumoto, Michiko Uchikoba
1991 Volume 20 Issue 11 Pages
1985-1988
Published: 1991
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An enhanced quenching of fluorescence of chlorophyll a by methylviologen in methanol solution was found to proceed via both dynamic and static processes. It was shown that the formation of a ground-state “dark” complex between the reactants is responsible for the latter process.
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Takashi Keumi, Yasumasa Hiraoka, Takashi Ban, Ichiro Takahashi, Hidehi ...
1991 Volume 20 Issue 11 Pages
1989-1992
Published: 1991
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3-Acyloxypyridines and 4-acetyl-1,2,4-triazole were found to react enantioselectively with (
RS)-1-phenylethanol to give (
R)-1-phenethyl carboxylates in high purity, catalyzed by lipase P (from Pseudomonas fluorescens).
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Shu-Zhong Wang, Keiji Yamamoto
1991 Volume 20 Issue 11 Pages
1993-1996
Published: 1991
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Pd(0)-catalyzed carbonylation of methyl 1-alkyl-2-trialkylsilyl-2-propenyl carbonates required forcing conditions [CO (60 atm), 70 °C] to give respective methyl (
E)-3-trialkylsilyl-3-alkenoate as a major product along with the (
Z)-isomer as well as an unusual regioisomeric product, methyl 2-alkyl-3-trialkylsilyl-3-butenoate to various extent.
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Hayao Kobayashi, Kozo Bun, Akihito Miyamoto, Toshio Naito, Reizo Kato, ...
1991 Volume 20 Issue 11 Pages
1997-2000
Published: 1991
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Superconducting transition of the grease-coated crystal of κ-(BEDT-TTF)
2Cu[N(CN)
2]Cl has been confirmed. There are at least three types of these crystals with different resistivity behaviors, of which the crystal exhibiting a resistivity anomaly around 50 K, undergoes a superconducting transition at 12.5 K, when it is coated with Apiezon L grease.
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Kazuhiko Mizuno, Kazuhisa Nakanishi, Masahiro Yasueda, Hideki Miyata, ...
1991 Volume 20 Issue 11 Pages
2001-2004
Published: 1991
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Irradiation of benzene solutions of 1- and 2-naphthylmethyltrimethylsilanes or their germane and disilane analogues in the presence of electron deficient alkenes afforded [2π + 2π] photocycloadducts with high regio- and stereo-selectivities.
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Ikuzo Nishiguchi, Tsuneo Oki, Tsuneaki Hirashima, Jiro Shiokawa
1991 Volume 20 Issue 11 Pages
2005-2008
Published: 1991
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Electroreduction of benzyl chlorides in the presence of acid anhydrides brought about stereoselective formation of (
E)-enol esters of the corresponding benzyl alkyl ketones, the initial acylated products, in good to moderate yields.
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Tsutomu Inokuchi, Masahiko Kusumoto, Sigeaki Matsumoto, Hiroyuki Okada ...
1991 Volume 20 Issue 11 Pages
2009-2012
Published: 1991
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Isomerization of glycidic esters and nitriles to the corresponding 2-hydroxy-3-alkenoates and their nitrile derivatives occurred on treatment with triphenylsilyl perchlorate or electrogenerated acid (EG acid). The cyanohydrin moiety of the nitriles
4 was transformed to a formyl group, giving the corresponding enals on treatment with weak base.
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Yuzo Nishida, Tetsuya Akamatsu
1991 Volume 20 Issue 11 Pages
2013-2016
Published: 1991
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We have found that some iron(III) compounds with tripodal-like ligands react with
t-butyl hydroperoxide to yield a purple species, whose spectroscopic properties are very similar to those observed for the purple lipoxygenase. Based on these facts the origin of the purple color in the native enzyme was discussed.
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Ken Sasaki, Mutsuji Sakai, Yasumasa Sakakibara, Kentaro Takagi
1991 Volume 20 Issue 11 Pages
2017-2018
Published: 1991
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Deoxygenative reduction of aryl Inflates was attained by using nickel(0)-dppp/PPh
3 catalyst with zinc powder and methanol as a hydrogen donor.
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Takashi Ochi, Yoichi Sasaki, Tadashi Yamaguchi, Tasuku Ito
1991 Volume 20 Issue 11 Pages
2019-2022
Published: 1991
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[Ru
2(O)(CH
3COO)
4(H
2O)(CH
3OH)(PPh
3)
2], has an Ru
2(μ-O)(μ-CH
3COO)
2 core and unidentate acetates with H
2O and CH
3OH coordinated to the trans positions to the oxide bridge as determined by the X-ray structural analysis. This is in contrast to the recent report of the chelatiftg acetate on the similarlly prepared complex.
1H NMR spectra in CDCl
3 revealed that the complex undergoes rapid unidentate-chelate equilibrium of acetates between the bis(chelate) and mono(chelate)mono(unidentate) forms.
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Junzo Nokami, Haruhisa Konishi, Hiroyuki Matsuura
1991 Volume 20 Issue 11 Pages
2023-2026
Published: 1991
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Regie- and chemospecific deallyloxycarbonylative aldol reaction of allyl(or -lie) α,α-disubstituted β-keto carboxylate with aldehyde was effectively promoted by Ni
0 (NiCl
2(PPh
3)
2–Zn), in which the allyloxycarbonyl group (–COOCH
2CH=CH
2) was replaced to 1-hydroxyalkyl group(–CH(OH)R, R = alkyl, vinyl, aryl) under mild reaction conditions.
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Katsuhira Yoshida, Osamu Miyatake, Juri Okamoto, Hiroaki Tokuda, Yuji ...
1991 Volume 20 Issue 11 Pages
2027-2030
Published: 1991
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The reaction of 5,8-quinolinedione with 2-[3-(dimethylamino)phenyl]propene was initiated by HC1 to give 6-[4-(dimethylamino)-2-(2-propenyl)phenyl]quinoline-5,8-dione, which subsequently underwent intramolecular cyclization to produce new compounds with remarkable metallochromism and intense fluorescence.
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Masahiro Mikuriya, Yoshihisa Kakuta, Kouichi Kawano, Tadashi Tokii
1991 Volume 20 Issue 11 Pages
2031-2034
Published: 1991
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Binuclear iron(III) and copper(II) complexes with
N-salicylidene-2-hydroxy-5-chloro(or bromo)benzylamine (H
2L), [Fe
2(L)
2(CH
3COO)
2]·2THF (THF = tetrahydrofuran) and [Cu
2(L)
2(DMSO)
2]·2DMSO (DMSO = dimethyl sulfoxide) have been prepared and characterized by X-ray structure analysis and magnetic susceptibilities (80–300 K).
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Jianzhuang Jiang, Ken-ichi Machida, Eiji Yamamoto, Gin-ya Adachi
1991 Volume 20 Issue 11 Pages
2035-2038
Published: 1991
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Water-soluble lanthanoid mono- and bisporphyrins, Ln(TPyP)acac (Ln = Ce, Pr) and Ln(TPyP)
2 (Ln = Ce) [TPyP = tetra(4-pyridyl)-porphyrin, acac = acetylacetone] were synthesized by refluxing Ln(acac)
3·nH
2O (Ln = Ce, Pr) and H
2TPyP in 1,2,4-trichlorobenzene. The complexes were characterized based on UV/vis absorption and
1H-NMR spectra, respectively.
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Nobuo Kimizuka, Takanori Miyoshi, Izumi Ichinose, Toyoki Kunitake
1991 Volume 20 Issue 11 Pages
2039-2042
Published: 1991
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Quantum sized cadmium sulfide particles were prepared by reaction of H
2S gas with Cd
2+-cyclam complexes preorganized in cast multibilayer films. The particle size was affected by the chemical structure of the bilayer component as well as by phase transition characteristics.
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Yuji Takikawa, Shigeki Hikage, Youichi Matsuda, Kazuyuki Higashiyama, ...
1991 Volume 20 Issue 11 Pages
2043-2046
Published: 1991
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Treatment of selenium-containing five-membered heteroaromatics with acetylenic dienophiles afforded several nitrogen heterocycles in good to moderate yields by using thermal reaction conditions. These reactions were thought to proceed through sequential [4+2] cycloaddition-selenium extrusion pathway.
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Kazuhide Tani, Takeshi Mihana, Tsuneaki Yamagata, Taro Saito
1991 Volume 20 Issue 11 Pages
2047-2050
Published: 1991
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The first transition metal complexes of 1,1′-bis(2-pyridyl)ferrocene (
1), a cationic rhodium(I) complex, [Rh(cod)(
1)]ClO
4, (cod = cycloocta-1,5-diene) and a silver(I) complex, [Ag(
1)ClO
4]
2, were prepared and characterized. X-Ray crystallographic analysis of the silver complex revealed that the complex is a dinuclear highly distorted five-coordinate Ag(I) complex with bridging perchlorate ligands, one of rare examples of five-coordinate Ag(I) complexes.
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Toshihiko Nagamura, Toshihiro Nakayama, Kumao Hamanoue
1991 Volume 20 Issue 11 Pages
2051-2054
Published: 1991
Released on J-STAGE: April 12, 2006
JOURNAL
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From measurements of fluorescence and triplet-triplet absorption spectra of bromoanthracenes in acetonitrile-amines, it is concluded that bromoanthracene radical anions produced by a reaction of the lowest singlet states of bromoanthracenes with amines are the intermediates for the debrominations.
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Akira Miyamoto, Katsuhiko Matsuba, Momoji Kubo, Katsuyuki Kawamura, To ...
1991 Volume 20 Issue 11 Pages
2055-2058
Published: 1991
Released on J-STAGE: April 12, 2006
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Molecular dynamics method using a simple two-body interatomic potential was found to be effective for reproducing the structures of silicalite with the MFI structure and CaNaA zeolite. This method was also effective for estimating the cation position in alkali ion-exchanged ZSM-5.
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Shunichi Fukuzumi, Morifumi Fujita
1991 Volume 20 Issue 11 Pages
2059-2062
Published: 1991
Released on J-STAGE: April 12, 2006
JOURNAL
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Rate constants for acid-catalyzed hydride-transfer reactions from triethylsilane to a series of carbonyl compounds are compared with those for acid-catalyzed electron transfer from the excited state of [Ru(bpy)
3]
2+ to the same series of carbonyl compounds in the presence of HClO
4 in acetonitrile at 298 K.
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