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Volume 6, Issue 3
Displaying 1-33 of 33 articles from this issue
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Susumu Tajima, Takeshi Sato, Tamae Yanagisawa, Tadashige Azami, Toshik ...1977 Volume 6 Issue 3 Pages 203-206
Published: March 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe average translational energy of ions has been readily measured by applying a variable retarding potential of negative voltage to the repeller electrode. The measured value of the methyl ion from acetonitrile at the threshold is in fair agreement with that in literature.View full abstract -
Tetsuo Osa, Shigeaki Fujieda, Yasuhiko Abe, Yasukazu Ohkatsu1977 Volume 6 Issue 3 Pages 207-210
Published: March 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSAbsorptions of an equimolar mixture of NO and NO2 in an aqueous solution of ammonium salts and with a cation-exchange resin substituted by ammonium ion were investigated by a flow method. Ammonium salts such as phosphate, benzoate, and oxalate were found effective for the removal of nitrogen oxides. Effects of temperature and time of contact were examined.View full abstract -
H. Ahlbrecht, C. Vonderheid1977 Volume 6 Issue 3 Pages 211-214
Published: March 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSNMR-Untersuchungen zeigen, daß die durch Phosgenierung der Amide 1 zugänglichen N-Vinylcarbamidsäurechloride 3 als nicht planare, chirale Konformere vorliegen.View full abstract -
Hisashi Ito, Masaaki Hagiwara, Iwao Ichikizaki, Kenji Takahashi1977 Volume 6 Issue 3 Pages 215-216
Published: March 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSA water-insoluble derivative of ribonuclease T1 (RNase T1) was prepared by chemically combining RNase T1 with a copolymer of acrylamide and divinylbenzene (Enzacryl AH), and its enzymatic properties were examined. The enzyme derivative retained much of its original activity and was considerably more stable to heat and extremes of pH than the native enzyme.View full abstract -
Yoshiharu Hisamatsu, Masaakira Iguchi1977 Volume 6 Issue 3 Pages 217-220
Published: March 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSHydrogen uptake of a solution containing pentacyanocobaltate(II) ions was found to be inhibited by Tl(I) ions. It was confirmed by a rapid-scan spectroscopic method that pentacyanocobaltate(II) ions react with Tl(I) ions in an aqueous solution to give the dimeric complex, [(CN)5CoTlCo(CN)5]5−. The dimeric complex containing Co-Tl-Co linkage was successfully isolated as a solid state.View full abstract -
Michiro Hayashi, Misako Imachi, Makoto Saito1977 Volume 6 Issue 3 Pages 221-222
Published: March 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSMicrowave spectra of allylsilane and its deuterated species were measured. Their rotational constants determined were predictable by a model having a set of structural parameters transferred from those of 1-butene and ethylsilane and the skeletal dihedral angle of 103°40′. Dipole moment obtained by Stark effect measurements was 0.526±0.022 D for the normal species making an angle of about 36° with the SiC bond. From the observed splittings of the spectra due to the excited silyl torsional state, the barrier to SiH3 internal rotation was determined to be 2130±70 cal/mol.View full abstract -
Toshio Wakabayashi, Kenzo Watanabe, Yoshinori Kato, Masahiko Saito1977 Volume 6 Issue 3 Pages 223-228
Published: March 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESS(S)-(+)-2-oxo-6-piperidineacetic acid was synthesized by a novel route involving an asymmetric cyclization process. Its absolute configuration was determined by converting it to (S)-(−)-sedamine and (S)-(−)-allosedamine, piperidine alkaloids.View full abstract -
Kiyoshi Nara, Kazuyoshi Katamoto, Shigeru Suzuki, Shunichi Akiyama, Ei ...1977 Volume 6 Issue 3 Pages 229-234
Published: March 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe absolute configuration of the aminopolyol moiety (XI) of the aminoglycoside antibiotics P-2563 (P) (I) and (A) (II) was established to be 2S, 3S, 4R and 5S from the evidence that XI gave methyl 3,6-diacetamido-3,6-dideoxy-α-L-gulopyranoside through the oxidation of the hydroxymethyl group at C-6. From this fact, together with the plane structures of I and II and 13C-NMR studies, the absolute configuration of I and II were elucidated to be 3-O-(4-deoxy-4-propionamido-α-D-glucopyranosyl)-(2S, 3S, 4R, 5S)-1,4-diamino-1,4-dideoxyhexitol and 3-O-(4-acetamido-4-deoxy-α-D-glucopyranosyl)-(2S, 3S, 4R, 5S)-1,4-diamino-1,4-dideoxy-hexitol, respectively.View full abstract -
Akio Murai, Noriaki Iwasa, Tadashi Masamune1977 Volume 6 Issue 3 Pages 235-236
Published: March 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe transformation of jervine into testosterone is described.View full abstract -
Satsuki Abe1977 Volume 6 Issue 3 Pages 237-240
Published: March 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSPolyvinylcarbazole reacts selectively with nitrogen dioxide and develops a yellow color. The color producing components are identified to be nitro derivatives of the polymer. A new indicator tube developed as an application of this reaction will be used conveniently for the detection of nitrogen dioxide in the field of industrial hygiene.View full abstract -
Hajime Takahashi, Masaaki Ito, Hiroshi Suginome1977 Volume 6 Issue 3 Pages 241-244
Published: March 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSA facile three-step ring contraction of sesquiterpene widdrol (1) is described. The steps involve the first known example of the photoreaction of a 7-membered cyclic homoallyl alcohol nitrite to afford four isomeric α,β-unsaturated oximes (3), (4), (5) and (6).View full abstract -
Takeshi Takeda, Masahiro Ueda, Teruaki Mukaiyama1977 Volume 6 Issue 3 Pages 245-248
Published: March 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSVarious α-hydroxy ketones were prepared in good yields by reduction of α-ethoxycarbonylhydrazono ketones with NaBH4, followed by acid hydrolysis. α-Ethoxycarbonylhydrazono ketones were obtained in good yields by the treatment of Δ2-1,3,4-oxadiazolines, prepared from 1-(2-oxoalkyl)pyridinium salts and diethyl azodicarboxylate, with aqueous sodium hydroxide.View full abstract -
Junzo Nokami, Norio Kunieda, Masayoshi Kinoshita1977 Volume 6 Issue 3 Pages 249-252
Published: March 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe reaction of (+)-(R)-α(p-tolylsulfinyl)acetophenone(1) with alkyl Grignard reagents in tetrahydrofuran is described. When 1 was treated with 2 equiv of ethylmagnesium iodide in tetrahydrofuran at 0°C, (−)-ethyl p-tolyl sulfoxide and α(ethylsulfinyl)acetophenone were obtained.View full abstract -
Ikuo Saito, Kunio Sakan, Shô Itô1977 Volume 6 Issue 3 Pages 253-256
Published: March 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe reaction of nitrosotropolone 1 with cyclopentadiene was found to proceed peri-and stereospecifically yielding unstable endo [4+2] adduct 6. Nitrosotropolone acetate 2 also reacts regio- and stereospecifically in benzene to give endo adduct 3. The structure of the products were determined on the basis of their spectra. Their quinoxaline derivatives were also prepared.View full abstract -
Shoji Inoue, Kunisuke Okada, Hisae Kakoi, Toshio Goto1977 Volume 6 Issue 3 Pages 257-258
Published: March 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSA luminescent substance was isolated from liver of N. microchir. It was proved to be identical with Oplophorus luciferin.View full abstract -
Shoji Inoue, Hiroyasu Taguchi, Mikiko Murata, Hisae Kakoi, Toshio Goto1977 Volume 6 Issue 3 Pages 259-262
Published: March 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSWatasenia dehydropreluciferin was isolated from livers of Watasenia scintillans. Its structure was determined as Ia rather than Ib. Sodium borohydride reduction of Ia gave Watasenia preluciferin (IV).View full abstract -
Takao Abe, Mitsunori Sukigara, Kenichi Honda1977 Volume 6 Issue 3 Pages 263-266
Published: March 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe effect of pH on the spectral sensitization of silver chloride was studied electrochemically. The sensitized photocurrent by rhodamine B decreased with lowering pH of the electrolyte solution, whereas in the case of 1,1′-diethyl-2,2′-quinocyanine chloride, the increase in the sensitized photocurrent was observed. The above fact suggests that H+ existing in the vicinity of the silver chloride surface plays an important role in increasing the sensitized photocurrent.View full abstract -
Takashi Kawamura, Shigeru Hayashida, Teijiro Yonezawa1977 Volume 6 Issue 3 Pages 267-270
Published: March 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe hyperfine splitting constant (hfsc) of H6endo of the bicyclo[2.1.1]hexan-5-yl radical increased from 28.22 G to 28.80 G upon the replacement of H5 with a deuterium atom, which is qualitatively explained, with the aid of INDO calculations, as due to the decrease of the out-of-plane mode vibration of the C5–H5 bond upon the replacement.View full abstract -
Tadashi Honda, Tatsushi Murae, Takahiko Tsuyuki, Takeyoshi Takahashi1977 Volume 6 Issue 3 Pages 271-274
Published: March 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESS13αH-Olean-18-ene derivatives (4 and 5) were prepared from olean-12-en-19-one derivatives (6 and 24, respectively) by a forced Wolff–Kishner reduction and subsequent acetylation and methylation. Methyl 2,3-di-O-acetylarjunate (15) was transformed, via 16 and 17, into a 13βH-olean-18-ene derivative (21), which proved to be not identical with 4. A 13αH-configuration was therefore shown for 4. A signal due to a C(19)–H of the 13αH-olefins (4 and 5) was observed at δ 5.30, while that of the 13βH-olefin (21) at δ 5.10.View full abstract -
Izumi Nakai, Kichiro Koto, Kozo Nagashima, Nobuo Morimoto1977 Volume 6 Issue 3 Pages 275-276
Published: March 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSSarabauite is monoclinic: a=25.33(2), b=5.655(3), c=16.88(1) Å and β=117.51(6)° and C2/c. Z=4 and ρc=4.99 g/cm3. The Sb is essentially coordinated by three atoms of oxygen and/or sulfur. SbO3 pyramids of the Sb(1), Sb(2) and Sb(3) share corners forming a slab parallel to (100). The four membered ring consisting of Sb(S,O)3 pyramids of the Sb(4) and Sb(5) links to the slab through the O(2). The Ca is coordinated by eight oxygen atoms in the slab.View full abstract -
Makoto Hino, Kazushi Arata1977 Volume 6 Issue 3 Pages 277-278
Published: March 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe title reaction was carried out at room temperature over catalysts prepared by calcining FeSO4, Fe2O3 and Fe(OH)3 in air at various temperatures, followed by treating with HCl. The FeSO4 catalyst heat-treated at 700°C showed surprisingly high activity and selectivity, whereas other catalysts were almost inactive.View full abstract -
Kiyohiko Tajima1977 Volume 6 Issue 3 Pages 279-282
Published: March 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSα-Methoxy-N-(phenylacetyl)phenylglycine methyl ester was obtained in 37% yield by the treatment of N-(phenylacetyl)phenylglycine with dicyclohexylcarbodiimide in methanol under an oxygen atmosphere. The mechanism and the generality of this oxidative alkoxylation are discussed.View full abstract -
Toshifumi Hirata, Reiko Ideo, Takayuki Suga1977 Volume 6 Issue 3 Pages 283-286
Published: March 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSA novel C31-3,4-secodammarane-type triterpene, alnuseric acid, was isolated from the male flowers of Alnus serrulatoides Call. (Betulaceae). Its structure was elucidated to be (20S,24R)-20 ,24-epoxy-24-methyl-3,4-secodammar-4(28)-en-3-oic acid (I) by a combination of chemical and spectroscopic methods.View full abstract -
Jyuzo Nakayama, Miyoko Ishihara, Masamatsu Hoshino1977 Volume 6 Issue 3 Pages 287-288
Published: March 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe title compound was synthesized by the condensation of 3-hydroxytropone with 2-methylthio-1,3-dithiolylium iodide and its spectroscopic properties were described.View full abstract -
Norio Kunieda, Masayoshi Kinoshita, Junzo Nokami1977 Volume 6 Issue 3 Pages 289-292
Published: March 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe enantioface differentiating reaction by p-tolylsulfinylcarbanion(2), derived from (+)-(R)-methyl p-tolyl sulfoxide (1), toward unsymmetrical ketones (3) is described. The carbanion(2) readily reacts with 3 to produce a mixture of (RSRC)- and (RSSC)-β-hydroxy sulfoxides (4). The ratio of the diastereoisomers in 4 and the absolute configuration of the predominant diastereoisomer were determined with the aid of NMR and the specific rotation of alcohol(6) which was prepared by desulfurization of 4.View full abstract -
Masaji Oda, Mitsunori Oda, Shoichi Miyakoshi, Yoshio Kitahara1977 Volume 6 Issue 3 Pages 293-296
Published: March 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESS3,5,7-Cyclooctatriene-1,2-dione 1, a labile substance, is synthesized from 7-bromo-3,5-cyclooctadiene-1,2-dione by dehydrobromination and characterized by 1H-NMR spectrum and some chemical reactions. The formation of 3-bromo derivative 3 is also demonstrated mainly by means of 1H-NMR spectroscopy.View full abstract -
THE IMPORTANCE OF GENERAL ACID CATALYSIS IN THE DIHYDRONICOTINAMIDE REDUCTION OF CARBONYL SUBSTRATESSeiji Shinkai, Toyoki Kunitake1977 Volume 6 Issue 3 Pages 297-300
Published: March 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe reduction of hexachloroacetone by 1-benzyl-1,4-dihydronicotinamide in absolute ethanol and acetonitrile is general acid catalyzed. This mechanism is important in connection with the function of some NADH dependent enzymes in which the reaction can be aided by a general acid catalysis.View full abstract -
Masanori Kosugi, Kazuo Sasazawa, Yutaka Shimizu, Toshihiko Migita1977 Volume 6 Issue 3 Pages 301-302
Published: March 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSCatalytic allylation of aryl halides with allyltributyltin in the presence of tetrakis(triphenylphosphine)palladium(O) was investigated. The reaction with aryl bromides proceeded efficiently to yield allylbenzenes.View full abstract -
Akira Nishinaga, Koichi Nakamura, Kaoru Yoshida, Teruo Matsuura1977 Volume 6 Issue 3 Pages 303-306
Published: March 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe p-peroxyquinol esters derived from the base-catalyzed oxygenation of 4-alkyl-2,6-di-t-butylphenols (alkyl=R1) followed by the Schotten–Baumann acylation (R2COCl) undergo a novel base-catalyzed rearrangement with t-BuOK in DMF to give p-quinoxyacetic acid derivatives in excellent yields. A mechanism involving the initiation by the homolysis of O–O bond is discussed.View full abstract -
Masaji Oda, Masaji Kasai, Yoshio Kitahara1977 Volume 6 Issue 3 Pages 307-310
Published: March 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESS2-Diazo-4-cyclopentene-1,3-dione 1 and 2-diazo-4,6-cycloheptadiene-1,3-dione 2 are synthesized. The spectral data of these compounds indicate that there are considerable difference between them in the degree of resonance contribution of the canonical forms: the contribution of the enolate canonical form 1b to the resonance hybrid cf 1 is less important than the corresponding form of usual 2-diazo-1,3-diones, while the enolate form 2b to 2 is very important.View full abstract -
Yukio Kubota1977 Volume 6 Issue 3 Pages 311-316
Published: March 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe fluorescence properties (spectrum, lifetime and quantum yield) of 9-aminoacridine cation in aqueous solutions of nucleotides have been examined. It was found that the fluorescence of the dye is quenched by adenosine-5′-monophosphate and guanosine-5′-monophosphate. Quantitative analysis of the results shows that the quenching of fluorescence is caused by dynamic and static quenching processes.View full abstract -
Shoichi Kikkawa, Masakatsu Nomura, Michimasa Shimizu1977 Volume 6 Issue 3 Pages 317-318
Published: March 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe reaction of three butenes with chlorine through ZnCl2–KCl–NaCl melts yielded selectively butadiene at 450°C while chlorination through CuCl–KCl–NaCl melts and thermal chlorination produced considerable amounts of C4H7Cl and C4H8Cl2 along with expected butadiene.View full abstract -
Katsuhiko Miyoshi, Yoshiaki Wada, Hayami Yoneda1977 Volume 6 Issue 3 Pages 319-320
Published: March 05, 1977
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSPartial resolution of neutral [Co(acac)3] was performed by extracting into 1,2-dichloroethane the complex formed when racemic Li[Co(acac)3] was mixed with Δ- or Λ-[Co(phen)3]Cl3 in water. This system is the first Pfeiffer-active system in which a dissymmetric metal complex serves as a chiral environment compound.View full abstract
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