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Volume 17, Issue 12
Displaying 1-35 of 35 articles from this issue
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Jun Yano, Takaaki Tanaka1988 Volume 17 Issue 12 Pages 1943-1946
Published: December 05, 1988
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSPoly(N,N-dimethylaniline)(PDA) is a semiconductor having positively charged sites in the polymeric backbone. A PDA coated electrode can capture I− electrostatically and the I− in the PDA film can also be oxidized electrochemically. Poly(o-chloroaniline)(PCA) responses to dissolved I− selectively, though it is quite an insulator. A PDA/PCA dual-layer coated electrode shows selective Nernstian response to dissolved I−.View full abstract -
Kahee Fujita, Atsuo Matsunaga, Hatsuo Yamamura, Taiji Imoto1988 Volume 17 Issue 12 Pages 1947-1950
Published: December 05, 1988
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESS6A-S-phenyl-6F-O-(β-naphthalenesulfonyl)-6X-O-(p-toluenesulfonyl)-6A-thio-β-cyclodextrins (X = B, X = C, X = D, X = E, and X = G) were prepared from the reaction of 6A-S-phenyl-6F-O-(β-naphthalenesulf onyl)-6A-thio-β-cyclodextrin with p-toluenesulfonyl chloride in pyridine. The structures were determined through their Taka amylase A-catalyzed hydrolyses.View full abstract -
Tsugio Kitamura, Takashi Kabashima, Shinjiro Kobayashi, Hiroshi Tanigu ...1988 Volume 17 Issue 12 Pages 1951-1954
Published: December 05, 1988
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSAddition of alkoxide ions resulted in ipso substitution in the photolysis of an alcohol solution of 1-(p-methoxyphenyl)-2,2-diphenylvinyl bromide, whereas addition of triethylamine, pyridine, or NaHCO3 led to vinylic substitution.View full abstract -
Tsutomu Yokozawa, Naoro Ito, Takeshi Endo1988 Volume 17 Issue 12 Pages 1955-1958
Published: December 05, 1988
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSRadical homopolymerization of phenylallene (PA) and copolymerization of PA with some vinyl monomers were described. PA polymerized selectively by the terminal double bond of allene both in the homopolymerization and the copolymerization. The radical reaction of PA with thiophenol was also carried out as a model reaction of the polymerization to discuss the polymerization process of PA.View full abstract -
Masakatsu Hato1988 Volume 17 Issue 12 Pages 1959-1962
Published: December 05, 1988
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSElectrically induced wettability change of polyaniline has been addressed by a potential controlled tensiometric method. Contact angle decreases with a change in the electrical potential toward more positive values. Wettability of polyaniline can be modulated by external electrical signals.View full abstract -
Hitoshi Yamamoto, Hajime Yasuda, Kiyohiko Yokota, Akira Nakamura, Yasu ...1988 Volume 17 Issue 12 Pages 1963-1966
Published: December 05, 1988
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSA series of novel ytterbium–organoaluminum complexes has been prepared by the reaction of YbCp*2 (THF) (Cp*=η-C5Me5) with AlR3. The X-ray structure analysis of the triethylaluminum complex, YbCp*2Al(C2H5)3 (THF), revealed the presence of unusual Yb–(μ-C2H5)–Al linkage. The complex catalyzes the polymerization of ethylene, methyl methacrylate and styrene in toluene.View full abstract -
Atsutaka Kunai, Koji Ishihata, Sotaro Ito, Kazuo Sasaki1988 Volume 17 Issue 12 Pages 1967-1970
Published: December 05, 1988
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe catalytic oxidation of benzene in the presence of air and reducing gases has been examined. All the catalysts studied, active carbon, several forms of platinum, zeolite of Cu form, and Pd/silica, were found to be effective for reducing Cu(II) to Cu(I) and thereby producing phenols. Among these, Pd/silica showed the best performance and is capable for practical use.View full abstract -
Noboru Yoshida, Hiroyuki Monzen, Masatoshi Fujimoto1988 Volume 17 Issue 12 Pages 1971-1974
Published: December 05, 1988
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSPresence of an intermediate inclusion species is demonstrated by 270 MHz 1H-NMR spectroscopy in the system of the title azo compound and the charged derivatives of α-cyclodextrin. The 1H-NMR peaks due to the sulfanilate moiety of the guest molecule are distinctly split into two peaks upon binding to the positively charged cyclodextrin, suggesting the formation of an intermediate species.View full abstract -
Jadwiga Bogusiak, Wieslaw Szeja1988 Volume 17 Issue 12 Pages 1975-1976
Published: December 05, 1988
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESS2-Benzothiazole derivatives of thiosugars can be conveniently prepared by treatment of reducing monosaccharides with tosyl chloride and 2-mercaptobenzothiazole under phase-transfer conditions.View full abstract -
Sigeru Torii, Hiroshi Okumoto, Taro Kiyoto, Shigeki Hikasa1988 Volume 17 Issue 12 Pages 1977-1978
Published: December 05, 1988
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSElectrolysis of a mixture of paraformaldehyde and terminal acetylene derivatives smoothly provided the corresponding hydroxymethylated compounds in high yields by passing less than 1 F/mol of electricity. Electroreduction of paraformaldehyde generated in situ an efficient base (EG base), which catalyzed hydroxymethylation of the acetylenes.View full abstract -
Youichi Shimizu, Kenichi Uemura, Norio Miura, Noboru Yamazoe1988 Volume 17 Issue 12 Pages 1979-1982
Published: December 05, 1988
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSOxygen reduction performances of gas-diffusion type carbon electrodes loaded with perovskite-type oxides La1−xCaxMO3 (M=Co,Mn) were examined in 30 wt% KOH at 25 °C. The highest electrode performance, i.e., 2600 mA/cm2 at −125 mV vs. Hg/HgO, was obtained with large surface area La0.6Ca0.4CoO3 prepared by an amorphous precursor method.View full abstract -
Shunichi Fukuzumi, Seiji Mochizuki, Toshio Tanaka1988 Volume 17 Issue 12 Pages 1983-1986
Published: December 05, 1988
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSPhotoreduction of phenacyl halides by an NADH model compound, 10-methylacridan (AcrH2), in MeCN proceeds via photoinduced electron transfer from the singlet excited state of AcrH2 to phenacyl halides without the contribution of radical chain reactions, while the photoreduction by another NADH model compound, 1-benzyl-1,4-dihydronicotinamide (BNAH), proceeds via photoinduced radical chain reactions. The origin of the mechanistic difference between AcrH2 and BNAH has been discussed.View full abstract -
Toshio Kubota, Teruhiko Ishii, Hidenori Minamikawa, Sadanori Yamaguchi ...1988 Volume 17 Issue 12 Pages 1987-1990
Published: December 05, 1988
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe Kolbe electrolysis of 4,4,4-trifluoro-3,3-dimethoxybutyric acid (TDBA) gave corresponding homo-coupling product, 1,1,1,6,6,6-hexafluoro-2,2,4,4-tetramethoxyhexane, which could be converted to the diene by treating with TiCl4 followed by dehydrochlorination. Furthermore, the crossed Kolbe product from TDBA and 3-hydroxy-2-trifluoromethylpropionic acid was converted to tetrahydrofurans and an 1-olefine.View full abstract -
Fey-long Wang, Wataru Ueda, Yutaka Morikawa, Tsuneo Ikawa1988 Volume 17 Issue 12 Pages 1991-1992
Published: December 05, 1988
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSMethyl vinyl ketone was obtained at 30–40% selectivity by the reaction of methanol and acetone at 350 °C over Ti(IV)-, Cr(III)-, Mn(II)-, and Sn(IV)-exchanged forms of fluoro tetrasilicic mica (TSM). The addition of oxygen into the feed increased the conversion of acetone and the reaction over Ti(IV)-TSM converted 11% of acetone fed into methyl vinyl ketone at 85% selectivity.View full abstract -
Studies on the Molecular Overturn during Compulsory Z-Type Deposition of LB Films Using Double GatesTeiji Kato1988 Volume 17 Issue 12 Pages 1993-1996
Published: December 05, 1988
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSOverturn of molecules during the compulsory Z-type deposition using double gates was investigated by in-situ photopolymerization of a film material and by contact angle measurements of resultant LB films with water. The experimental results made inferable that molecules should overturn three times in total for every two cycles of the compulsory Z-type deposition.View full abstract -
Koji Mori, Fumio Toda1988 Volume 17 Issue 12 Pages 1997-2000
Published: December 05, 1988
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSSome alkyl aryl and dialkyl sulfoximines were resolved efficiently by complex formation with optically active 2,2′-dihydroxy-1,1′-binaphthyl and 1,6-di(o-chlorophenyl)-1,6-diphenylhexa-2,4-diyne-1,6-diol, respectively.View full abstract -
Chung-gi Shin, Nobuyuki Takahashi, Yasuchika Yonezawa1988 Volume 17 Issue 12 Pages 2001-2002
Published: December 05, 1988
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSIt was found that the selective ester hydrolysis of N-benzyloxycarbonyl-α-dehydroglutamic acid dimethyl ester [Cbz-ΔGlu (OMe)-OMe] with papain at pH 8.0 was achieved readily to give only a Cbz-ΔGlu(OMe)-OH almost quantitatively.View full abstract -
Sadao Tsuboi, Satoshi Takatsuka, Masanori Utaka1988 Volume 17 Issue 12 Pages 2003-2004
Published: December 05, 1988
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSReaction of ethyl 2,3-butadienoate with aldehydes in the presence of DABCO gave ethyl 2-(1-hydroxyalkyl)-2,3-butadienoate (2) in 41–54% yields. The reaction in the presence of butyl lithium gave 2 in 36–60% yields accompanied by ethyl 2,4-di(1-hydroxyalkyl)-2,3-butadienoate.View full abstract -
Yasuaki Okamoto, Hiroshige Kane, Toshinobu Imanaka1988 Volume 17 Issue 12 Pages 2005-2008
Published: December 05, 1988
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSMolybdenum carbonyls encaged in a NaY zeolite were found to form stable butadiene complexes; Mo(CO)4(C4H6) and Mo(CO)2(C4H6)n (n = 1 or 2). These complexes are implied to deactivate the hydrogenation of C4H6 over molybdenum carbonyls/zeolite catalysts. The active species is proposed to be Mo(CO)3 ads.View full abstract -
Katsuhiko Inomata, Takaki Hirata, Hiroshi Suhara, Hideki Kinoshita, Hi ...1988 Volume 17 Issue 12 Pages 2009-2012
Published: December 05, 1988
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe relative degree of “syn-effect” for the γ-substituted vinylsulfones in their conversion to the corresponding allylsulfones with 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) was determined by observing E/Z ratios of the resulting allylsulfones as follows: CH3O– ≥ AcO– > CH3– > –CH2– >> t-Bu– and Ph–.View full abstract -
Hiroki Kondo, Hiroto Tanamachi, Junzo Sunamoto1988 Volume 17 Issue 12 Pages 2013-2016
Published: December 05, 1988
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSPhenylglycine undergoes transamination with 2-oxoglutaric acid in the presence of N-dodecylpyridoxal chloride (DPL) and hexadecyltrimethylammonium chloride (CTACl) under mild conditions. This is the first example of nonenzymatic overall transamination realized in the absence of metal ions.View full abstract -
Masato Yoshida, Hideki Mochizuki, Nobumasa Kamigata1988 Volume 17 Issue 12 Pages 2017-2020
Published: December 05, 1988
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSA novel type of positive halogens, sulfonyl hypochlorite or sulfonyl hypobromite was formed in the reactions of halide anions with nitrobenzenesulfonyl peroxides; these hypohalites could be used as effective reagents for halogenation of aromatic rings.View full abstract -
Takuji Ogawa, Toshihiro Murafuji, Kazuhiko Iwata, Hitomi Suzuki1988 Volume 17 Issue 12 Pages 2021-2024
Published: December 05, 1988
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSMethyl diarylbismuthinates, a new class of organic pentavalent bismuth compounds, were prepared by the reaction of triarylbismuthines with chloramine-T in methanol and their chemical properties were investigated. These compounds possess a mild and selective oxidizing ability.View full abstract -
Hidetoshi Kita, Shigeaki Sasaki, Kazuhiro Tanaka, Ken-ichi Okamoto, Ma ...1988 Volume 17 Issue 12 Pages 2025-2028
Published: December 05, 1988
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe use of water-permeable membranes for pervaporation in the esterification of carboxylic acid with ethanol was studied. The perfect conversion due to the equilibrium shift was obtained by using an asymmetric polyetherimide membrane for removal of water generated by the esterification.View full abstract -
Koichi Komatsu, Yasuhisa Jinbu, Gregory R. Gillette, Robert West1988 Volume 17 Issue 12 Pages 2029-2032
Published: December 05, 1988
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSTrimerization of 2,3-dibromobicyclo[2.2.2]oct-2-ene by the use of butyllithium followed by subsequent cyclization gives 1,2:3,4:5,6-tris(bicyclo[2.2.2]oct-2-eno)benzene (3), the highly symmetrical structure of which is established by X-ray crystallography. Compound 3 is reversibly oxidized upon cyclic voltammetry at 1.25 V vs Ag/Ag+ in CH3CN.View full abstract -
Koji Tanaka, Hajime Miyamoto, Toshio Tanaka1988 Volume 17 Issue 12 Pages 2033-2036
Published: December 05, 1988
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSElectrochemical carboxylation of PhCOCH3 and C6H10(O) coupled with CO2 reduction by [Ru(bpy)2(CO)2]2+ was carried out in CO2−saturated dry CH3CN. CO2 ligated on the ruthenium atom is reduced to HCOO− or CO upon the electrochemical reduction of the complex, where PhCOCH3 and C6H10(O) function as a proton source, and the resultant carbanions react with CO2 to afford the corresponding ketoacids, catalytically.View full abstract -
Tadashi Endo, Takashi Suzuki, Yutaka Nakajima, Yutaka Sakiyama, Kunihi ...1988 Volume 17 Issue 12 Pages 2037-2040
Published: December 05, 1988
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSIn oxidation of a pair of associating thiols, each having a phenyl or a given group (R), it has been found that the order of the selectivity agrees with that of the strength of specific R–Ph interactions for each of two sets of R [(i) p-MeC6H4 < Ph < p-MeOC6H4 and (ii) n-C5H11 < Ph < p-MeCOC6H4].View full abstract -
Seiichi Takano, Youichi Shimazaki, Yoshinori Sekiguchi, Kunio Ogasawar ...1988 Volume 17 Issue 12 Pages 2041-2044
Published: December 05, 1988
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSA concise enantioselective synthesis of C27−34 fragment of mycoticin B and C31−37 fragment of amphotericin B is described using a common building block prepared from (S)-O-benzylglycidol.View full abstract -
Kazuo Torii, Takashi Iwasaki1988 Volume 17 Issue 12 Pages 2045-2048
Published: December 05, 1988
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSNovel Ni-hectorite inorganic complexes were synthesized hydrothermally from homogeneous Ni–Si hydrous oxide gel at 200 °C for 2 h. Dispersed slurries of these complexes showed rheological properties similar to those of natural smectites and, on heating, formed porous materials characterized by large specific surface areas and high thermal stability.View full abstract -
Makoto Minato, Jiro Tsuji1988 Volume 17 Issue 12 Pages 2049-2052
Published: December 05, 1988
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSAldehydes are allylated efficiently by the catalysis of BiCl3 in a two-phase electroreductive system.View full abstract -
Seigo Makida, Hiroyuki Nasu, Aiko Miyamoto, Takeshi Imura, Yukio Osaka ...1988 Volume 17 Issue 12 Pages 2053-2054
Published: December 05, 1988
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSHigh-Tc superconducting Bi–Sr–Ca–Cu–O films were prepared on some metal substrates by pyrolysis of 2-ethylhexanoates. Although a high-Tc superconducting phase could seen for the films on stainless steel or silver substrates, only the films on silver substrates showed diamagnetism below 73 K and Tc(end)=68 K.View full abstract -
Touru Tsukahara, Hiroyuki Kawano, Youichi Ishii, Tamotsu Takahashi, Ma ...1988 Volume 17 Issue 12 Pages 2055-2058
Published: December 05, 1988
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSA five-coordinate ruthenium complex with the chiral bisphosphine, (R)-2,2′-bis(diphenylphosphino)-1,1′-binaphthyl (BINAP), [RuH(BINAP)2]PF6 (1) was prepared. The complex 1 was found to be a mixture of two isomers in solution. The exposure of 1 to hydrogen gas gave a chiral molecular hydrogen complex, trans-[RuH(η2-H2)(BINAP)2]PF6 (2). [RuD(η2-HD)(BINAP)2]+ ion formed by introducing D2 gas into a THF-d8 solution of 1 has a H-D coupling constant J(H,D) = 30 Hz (1:1:1), diagnostic of η2-HD complex.View full abstract -
Motoo Tori, Takeshi Hasebe, Yoshinori Asakawa1988 Volume 17 Issue 12 Pages 2059-2060
Published: December 05, 1988
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESS(±)-Chiloscyphone, a sesquiterpene ketone isolated from the liverwort, has been synthesized starting from 3,4-dimethyl-2-cyclohexen-1-one via intramolecular aldol condensation.View full abstract -
Teruo Hinoue, Satoshi Kawada, Mitsuhiro Murata, Yu Yokoyama1988 Volume 17 Issue 12 Pages 2061-2064
Published: December 05, 1988
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSTemperature change of a sample solution due to optical absorption was detected by a pyroelectric sensor. A calibration curve was linear at the low concentrations of dye and the detection limit was 0.0035 cm−1. From a solvent dependence of the signal magnitude, the signal generation could be explained by thermal conduction.View full abstract -
Kazuhiko Mizuno, Toshiyuki Tamai, Isao Nakanishi, Nobuyuki Ichinose, Y ...1988 Volume 17 Issue 12 Pages 2065-2068
Published: December 05, 1988
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe photoreactions of 9,10-dicyanoanthracene and 9-cyanoanthracene in the presence of biphenyl in acetcnitrile under oxygen atmosphere gave anthraquinone and 9(10H)anthracenone, respectively, via the reaction of the radical anions of cyanoanthracenes with molecular dioxygen.View full abstract
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