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Volume 6, Issue 7
Displaying 1-37 of 37 articles from this issue
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Tsutomu Ide, Kimiaki Imafuku, Hisashi Matsumura1977 Volume 6 Issue 7 Pages 717-718
Published: July 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESS5-Methyltropolone reacted with aryldiazonium salts to give either 3-arylazo-5-methyltropolones or 3,7-diarylazo-5-methyltropolones according to the electrophilicity of the attacking species.View full abstract -
Rei Matsueda, Hidekuni Takahagi, Teruaki Mukaiyama1977 Volume 6 Issue 7 Pages 719-722
Published: July 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSRacemization in the oxidation-reduction condensation was studied by the coupling reaction for the formation of Boc-Leu-Ile-Asp(NH2)-Leu-OBut , recently reported for the detection of racemization in the azide, dicyclohexylcarbodiimide +1-hydroxybenzotriazole methods, etc. The coupling reaction using triphenylphosphine and 2,2′-dithiodipyridine-1,1′-dioxide gave favorable results to the present racemization test on solid support as well as in solution synthesis.View full abstract -
Nobukatsu Katsui, Fujio Yagihashi, Akira Matsunaga, Kazuhiko Orito, Ak ...1977 Volume 6 Issue 7 Pages 723-724
Published: July 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe structure of epilubimin, a stress metabolite isolated from diseased potato tubers, was determined as shown in formula 1 on the basis of the chemical and spectral data.View full abstract -
Seizo Tamagaki, Katsuyuki Tamura, Seizi Kozuka1977 Volume 6 Issue 7 Pages 725-726
Published: July 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSSeveral dialkylsulfonium ylides were obtained almost quantitatively by the transylidation reaction of dibenzylselenonium cyano(methoxycarbonyl)methylide with alkyl sulfides in the presence of CS2.View full abstract -
Shin Ohno1977 Volume 6 Issue 7 Pages 727-730
Published: July 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSA copper evaporated organic film consisting of a poly(vinyl-chloride) matrix and a precursor of a chelating agent was tinged with magenta (λmax=520 nm) under successive treatments of electron bombardment and heating. On the bombarded part, structure of film was changed from laminated double layers to single organic one. The coloration was due to formation of a cupric metallochrome (colored chelate) and was closely related to the change of chemical property of evaporated copper by the above treatments. Thus the copper disappearance from the surface was estimated to have occurred by diffusion into the organic layer.View full abstract -
Koichi Mizuno, Hitoshi Watanabe, Makoto Misono, Jun-ichiro Take, Yukio ...1977 Volume 6 Issue 7 Pages 731-734
Published: July 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSGas-phase reactions of alkyl halides over the complexes of KCl and CaCl2 with dibenzo-18-crown-6 supported on silica gel exhibited high substitution to elimination ratio and relative reactivities of primary > secondary and iodide > bromide, in contrast to those over uncomplexed metal chlorides. These results together with stereochemistry and poisoning effect indicate that the complexation with crown ether enhances the nucleophilicity or basicity of metal chlorides.View full abstract -
Yasuo Yamamoto, Keiko Ishizu, Yoko Shimizu1977 Volume 6 Issue 7 Pages 735-738
Published: July 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe formation of stable L-ascorbato(2,2′-bipyridine)copper(II) complex in solution was confirmed and studied chiefly by means of its absorption and CD spectra.View full abstract -
Morihide Higo, Teiichiro Ogawa, Nobuhiko Ishibashi1977 Volume 6 Issue 7 Pages 739-742
Published: July 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe emission spectra of four Balmer lines (α,β,γ,δ) by electron impact on H2O and D2O were measured. The translational energies (E) of the excited H and D atoms were determined by their Doppler widths. (Remark: Graphics omitted.)View full abstract -
Masao Hisatome, Naoyuki Watanabe, Koji Yamakawa1977 Volume 6 Issue 7 Pages 743-744
Published: July 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESS[4] [4] [4] [3] Ferrocenophanes (5a and 5b) , tetrabridged ferrocenophanes, have been synthesized via lactic acid derivatives of [4] [4] [3] ferrocenophanes. A precursor of perferrocenophane, 5-(3-carboxypropyl)[4] [4] [4] [3] ferrocenophane (7), has been derived from 5a.View full abstract -
Toshiaki Masuda, Tatsuo Numata, Naomichi Furukawa, Shigeru Oae1977 Volume 6 Issue 7 Pages 745-748
Published: July 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe Pummerer reaction of phenylsulfinylcyclopropanes and (phenylsulfinylmethyl)cyclopropane with acetic anhydride afforded 1-acetoxy-1-(phenylmercapto)cyclopropanes and (α-acetoxyphenylmercaptomethy1)cyclopropane in high yields unlike in the acetolysis of 1-chloro-1-(phenylmercapto)cyclopropanes. Thus, the Pummerer reaction is considered to proceed via an ylide-ylene-ion pair.View full abstract -
Otohiko Tsuge, Michihiko Noguchi1977 Volume 6 Issue 7 Pages 749-752
Published: July 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSBenzoylsulfene 1 and two cyclic α-ketosulfenes 2 and 3, generated in situ from the corresponding sulfonyl chlorides and triethylamine, react with 1-pyrroline 1-oxides to produce the corresponding cis-s-cis β-aminoenones and/or β-imino sulfonic acids, whose relative yields greatly depended on the nature of solvents employed. The reaction pathways are also described.View full abstract -
Tadayoshi Morita, Hiroaki Kanzava, Kahei Takase1977 Volume 6 Issue 7 Pages 753-756
Published: July 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESS2,6-Dihydroxyazulene (3) is synthesized and it is shown that 3 exists in the solvent-dependent keto-enol tautomerism: thus, in acetone or DMSO 3 exists in the enol-type of 2,6-dihydroxyazulene (3a), whereas in chloroform 3 exists in the diketone-type of 1,3-dihydroazulene-2,6-dione [4,5-(2-oxotrimethylene)tropone] (3b).View full abstract -
Osamu Takazawa, Kazuhiko Saigo, Koichi Narasaka, Teruaki Mukaiyama1977 Volume 6 Issue 7 Pages 757-758
Published: July 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSγ-Damascone was selectively synthesized in good yield from γ-damascol by the oxidation of its alkoxymagnesium bromide with 1,1′-azodicarbonyldipiperidine. γ-Damascol was prepared by the reaction of γ-cyclocitral with 1-propynyllithium and the successive reduction with lithium aluminum hydride.View full abstract -
Naoki Inamoto, Shozo Masuda, Waro Nakanishi, Yoshitsugu Ideda1977 Volume 6 Issue 7 Pages 759-762
Published: July 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe normal and inverse substituent effects on the C-13 chemical shifts of Cβ-atoms in the titled compounds are explained by the π bond character of the Cα–Cβ bond. The transmission mode in m- and p-series has been discussed in terms of 1,3-through-space interaction. Therefore, both series should be treated separately.View full abstract -
Koichi Narasaka, Takashi Masui, Teruaki Mukaiyama1977 Volume 6 Issue 7 Pages 763-766
Published: July 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSLong chain ω-hydroxycarboxylic acids cyclize to the corresponding lactones in good yields by the treatment with 2-chloro-3-methoxymethyl-1-methylpyridinium iodide (2) and triethylamine in refluxing methylene chloride.View full abstract -
Jozef Drabowicz, Shigeru Oae1977 Volume 6 Issue 7 Pages 767-768
Published: July 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSA rapid and convenient method for selective reduction of sulfoxides to the corresponding sulfides in the mixture with other sulfinyl compounds, i.e., sulfinic esters and t-butyl thiolsuifinates, with (CF3CO)2O–H2S system is described.View full abstract -
Kuniaki Tatsuta, Akihiro Tanaka, Mitsuhiro Kinoshita, Sumio Umezawa1977 Volume 6 Issue 7 Pages 769-772
Published: July 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSCladinose analogues (2 and 8) of carbomycin B have been synthesized by regio- and stereoselective introduction of cladinose instead of mycarose into the ethylene acetal (3) of demycarosylcarbomycin B. Their antimicrobial activities are also presented.View full abstract -
Takeshi Yamamura1977 Volume 6 Issue 7 Pages 773-776
Published: July 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSA series of cationic surface-active porphyrins were synthesized, and their micellar formations in organic solvents were confirmed by spectroscopy.View full abstract -
Kazuo Achiwa1977 Volume 6 Issue 7 Pages 777-778
Published: July 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe synthesis of new chiral bisphosphine ligands (APPM (4) and PPPM (5)) and their application to the catalytic asymmetric synthesis of (R)- and (S)-N-benzyloxycarbonylalanine were described.View full abstract -
Masuo Aizawa, Shuichi Suzuki, Yoichi Nagamura, Rikio Shinohara, Isao I ...1977 Volume 6 Issue 7 Pages 779-782
Published: July 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSAn immuno sensor for determining specific protein has been developed. The measuring system is characterized by the potentiometric determination of potential difference across an antigenbinding membrane. A lipid antigen containing cardiolipin, phosphatidyl choline, and cholesterol was immobilized to an acetylcellulose membrane. The membrane-bound antigen retained the immunochemical reactivity to Wassermann antibody. The assymmetric membrane potential developed was dependent on the concentration of the antibody.View full abstract -
Teruaki Mukaiyama, Masatoshi Asami, Jun-ichi Hanna, Susumu Kobayashi1977 Volume 6 Issue 7 Pages 783-786
Published: July 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESS(S)-2-(Anilinomethyl)pyrrolidine (1), new chiral diamine, is easily prepared by four steps starting from (S)-proline. Asymmetric reduction of acetophenone with chiral hydride reagent, prepared from (1) and lithium aluminium hydride, gives (S)-1-phenylethanol in 92% optical yield (93% yield).View full abstract -
Keiji Iriyama, Masaru Shiraki, Masahiko Yoshiura1977 Volume 6 Issue 7 Pages 787-788
Published: July 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSAn effective method for partial purification of chlorophylls using dioxane and washing with 80% (v/v) aqueous methanol before chromatography was studied for the preparative purpose. The chromatographic analysis revealed that the preparation of chlorophylls thus obtained did not contain any leaf yellow pigments which disturbed the isolation of chlorophylls a and b from one another in column chromatography.View full abstract -
Jyuzo Nakayama, Kuniko Yamashita, Masamatsu Hoshino, Toshiro Takemasa1977 Volume 6 Issue 7 Pages 789-792
Published: July 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe reactions of 2,4- and 2,6-disubstituted phenols with two molar amounts of 1,3-benzodithiolylium tetrafluoroborate in acetonitrile at room temperature followed by treatment with triethylamine afforded the highly stable quinone methides, 2-(1,3-benzodithiol-2-ylidene)-3,5-cyclohexadien-1-ones and 4-(1,3-benzodithiol-2-ylidene)-2,5-cyclohexadien-1-ones, respectively, in good yields.View full abstract -
Hiromitsu Sagae, Masamichi Fujihira, Tetsuo Osa, Henning Lund1977 Volume 6 Issue 7 Pages 793-796
Published: July 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSTHe oxidation of nitroalkylbenzene with electro-generated superoxide ion was studied by cyclic voltammetry and controlled potential macro-electrolysis. The electrochemical reduction of oxygen in the presence of nitrotoluenes (o- and p-) and p-nitroethylbenzene yielded under mild conditions the corresponding nitrobenzoic acids from the former and p-nitroacetophenone plus 1-(p-nitrophenyl)ethanol from the latter.View full abstract -
Hajime Hasegawa, Hitoshi Saito, Kazuo Tsuchitani1977 Volume 6 Issue 7 Pages 797-800
Published: July 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSMethyl 4,5-epoxy-3-methoxycarbonyl-4-methyl-trans-2-pentenoate gave dimethyl 4-methyl-2,5-dihydrofuran-2,3-dicarboxylate on being heated with acetylenic compounds, while methyl 4,5-epoxy-3-methoxycarbonyl-4-methyl-cis-2-pentenoate gave methyl 3-methoxycarbonyl-4-oxo-2-pentenoate as a main product.View full abstract -
Masanori Kosugi, Kazuyoshi Yano, Mitsuo Chiba, Toshihiko Migita1977 Volume 6 Issue 7 Pages 801-804
Published: July 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSFree radical reaction of 3-chloro-4,4-dimethyl-2-oxazolidinone (NCDMO) to allylstannane and allylsilane were found to give 3-allyl-4,4-dimethyl-2-oxazolidinone. The formation of the product was interpreted in terms of addition of the acylamino radical. NCDMO does not react with ordinary olefin, perhaps owing to inhibiting behavior of enamine which may be derived from the adduct of NCDMO to olefin.View full abstract -
Toshiyasu Kiba, Hisanori Imura, Takaharu Honjo1977 Volume 6 Issue 7 Pages 805-808
Published: July 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSCs(I), Ca(II), Ba(II), Co(II), Mn(II), Hg(II), Al(III), Cr(III), Fe(III), Tm(III), Bi(III) and Th(IV) in trichloroacetic acid-sodium trichloroacetate buffer solutions have been readily extracted with polar solvents which have donor oxygen atom, e.g. alcohols,ketones,esters and ethers, without any additional extracting reagent.View full abstract -
Masami Saito, Takashi Uehiro, Yukichi Yoshino1977 Volume 6 Issue 7 Pages 809-810
Published: July 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSOsmium(III) complexes with ethylenediaminetetraacetic acid have been prepared by the reaction of hexachloroosmate(IV) and ethylenediaminetetraacetic acid suspended in water in a Teflon bucket at 14O°C. The complexes have been formulated as H[OsCl2H2edta]·2.5H2O and NH4[OsCl2H2edta] from elementary analyses, pH titration, ir and magnetic measurements.View full abstract -
Takefumi Matsukura, Koichi Mano, Akira Fujino1977 Volume 6 Issue 7 Pages 811-814
Published: July 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe reactions of five chlorocarbon ketones with N,N,N′,N′-tetramethyl-p-phenylenediamine or N,N-dimethylaniline were examined. Two of them afforded stable outer complexes with the former amine, while the rests gave very unstable complexes only evidenced by their CT-bands. Substituted products were only obtained in the reactions of all the ketones with the latter.View full abstract -
Akinori Jyo, Toshihiko Imato, Kazumi Fukamachi, Nobuhiko Ishibashi1977 Volume 6 Issue 7 Pages 815-816
Published: July 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSA new type of an anion-selective electrode has been developed. The sensitive membrane of the electrode is an anion exchange resin impregnated with nitrobenzene. The exchange site of the anion exchange resin is a hydrophobic quaternary ammonium group with a long alkyl chain. The performance of the electrode was comparable to that of usual or commercial liquid anion exchanger membrane electrodes.View full abstract -
Kyo Abe, Takanori Sato, Nobuo Nakamura, Takeo Sakan1977 Volume 6 Issue 7 Pages 817-818
Published: July 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSN-(2-Oxanyloxy)succinimide transfered its oxanyl group to alkoxide anions and carbanions to give oxanylated products (3a–3c and 5a–5d) under almost neutral condition.View full abstract -
Kousuke Kusuda, Alfred Roedig, Gerhard Bonse1977 Volume 6 Issue 7 Pages 819-822
Published: July 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSPerchloro-2H,5H-cyclopenta[b]pyran-5-one (12a) was obtained by thermal electrocyclic ring closure of diketone (11). Compound 12a was hydrolized to another stable cyclopentadienone derivative, perchloro-2H,5H-cyclopenta[b]pyrane-2,5-dione (8), which was prepared directly from (4) by treatment with sulfuric acid.View full abstract -
Seiji Sawamura, Yoshihiro Taniguchi, Keizo Suzuki1977 Volume 6 Issue 7 Pages 823-826
Published: July 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe equilibrium constant K and the volume change ΔV accompanying the formation of diethyl ether-iodine complex in n-heptane was estimated by measuring the visible absorption spectra up to 3300 bar at 25°C. The ΔV value of −6.7±1.0 cm3/mol accompanying the complex formation is comparable with that of −2.8 or −6.4 cm3/mol estimated by the X-ray data.View full abstract -
Tadahiro Kato, Chizuko Kabuto, Keu Hong Kim, Hisao Takayanagi, Tadao U ...1977 Volume 6 Issue 7 Pages 827-830
Published: July 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSAn X-ray crystallographic analysis of 15,16-dehydro epimukulol acetate has revealed that the exact stereostructure is indicated in figure 1, which can be depicted on the modified diamond lattice conformation model as shown in figure 2.View full abstract -
Isamu Kinoshita, Kazuo Kashiwabara, Junnosuke Fujita1977 Volume 6 Issue 7 Pages 831-832
Published: July 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSA pair of new diastereomers, the isomerism of which came from a pair of chiral phosphorus atoms were obtained for [PdCl2L], where L denotes 2-(S)-[(n-butylphenylphosphino)methyl]pyrrolidine prepared from (S)-proline. The absolute configurations of these isomers were suggested on the basis of the PMR spectra.View full abstract -
Takakazu Yamamoto, Motonori Bundo, Akio Yamamoto1977 Volume 6 Issue 7 Pages 833-834
Published: July 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSStable cationic dialkylcobalt complexes of composition [CoR2(bpy)2][AlR4] (R = CH3, C2H5) were obtained in high yields from mixtures of Co(acac)3, 2,2′-bipyridine (bpy), and trialkylaluminums (Al/Co > 7). Ion exchange reactions of the complexes with Na [B(C6H5)4] afforded [CoR2(bpy)2][B(C6H5)4]·(H2O)n (R: CH3, n=1; C2H5, n=0). Reactions of [CoR2(bpy)2][AlR4] with CH2Cl2 gave [CoR2(bpy)2]Cl·CH2Cl2.View full abstract -
Yoshiro Masuyama, Yoshio Ueno, Makoto Okawara1977 Volume 6 Issue 7 Pages 835-838
Published: July 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe alkylation followed by the deselenenylation of cyanomethyl phenyl selenide (1) gave α,β-unsaturated nitriles. The method was applied to generate 1-cyanocyclopropene, which was trapped using anthracene.View full abstract
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