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Volume 2, Issue 3
Displaying 1-35 of 35 articles from this issue
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Muneo Sasaki1973 Volume 2 Issue 3 Pages 205-208
Published: March 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSA kinetic study on the formation of a σ-complex from 1,3,5-trinitrobenzene (TNB) and sodium sulfite in aqueous solution was carried out in the temperature range, 10.0–30.0°C by the stopped-flow method. The kinetic and thermodynamic parameters were considered in comparison with those of the σ-complex from TNB and hydroxide ion.View full abstract -
Katsutoshi Ohkubo, Hiroyuki Sakamoto1973 Volume 2 Issue 3 Pages 209-214
Published: March 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe catalytic activation of the ground state 3Σg− O2 by phosphonium compounds in the liquid-phase oxidation of hydrocarbons was demonstrated on the basis of ultraviolet spectroscopic measurements and ASMO-SCF calculations. The said compounds, namely, activate the 3Σg− O2 mainly by the aid of the electron-transfer from the partially-occupied phosphorus dx2–y2-orbital of the formers to the 1πg-orbitals of the latter through the favorable d-π orbital-overlaps.View full abstract -
Kiyoshige Takayama, Masanori Kosugi, Toshihiko Migita1973 Volume 2 Issue 3 Pages 215-218
Published: March 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSRelative reactivities of substituted phenyl radicals in chlorine abstraction from carbon tetrachloride were estimated by carrying out competitive reactions of the radicals with carbon tetrachloride and iodine. Negative substituents on the radicals were found to retard the reactivities of chlorine abstraction.View full abstract -
Takeo Hisano, Toshio Terazawa, Hiroshi Matsui1973 Volume 2 Issue 3 Pages 219-222
Published: March 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSAniline and its several derivatives, belonging to primary, secondary, or tertiary amines, are shown to be the effective solvents of aluminum bromide for the electrodeposition of metallic aluminum. The secondary and tertiary amine systems showed an intricate conductometric behavior in the dilute region of aluminum bromide. The correspondence of behavior between electrodeposition and conductivity was observed.View full abstract -
Yukito Murakami, Junzo Sunamoto, Koji Kano1973 Volume 2 Issue 3 Pages 223-226
Published: March 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe release of p-nitrophenol from p-nitrophenyl hexanoate (PNPH), decanoate (PNPD), and laurate (PNPL) in the presence of 10-hydroxy-11-hydroxyimino[20]paracyclophane (Oxime-I) or 2-hydroxycyclodecanone oxime (Oxime-II) has been investigated in alkaline aqueous acetone at 19.6°C and pH 12.1. For the decomposition of PNPL, the specificity constant (kr), defined as the ratio of the apparent first-order rate constant for the reaction of Oxime-I to that for the reaction of Oxime-II, sharply increased below 26.7 % of acetone-content, while the rate constant for the simple alkaline hydrolysis without added catalyst species decreased with the decrease of acetone concentration. The copper(II) ion largely inhibited the reaction of PNPL with Oxime-I to reduce the rate below the catalyst-absence level. These results manifest the incorporation of the substrate into the cyclic cavity of the catalyst. The presence of substrate specificity was also indicated for the reaction of Oxime-I with p-nitrophenyl carboxylates.View full abstract -
Fujiko Iwasaki1973 Volume 2 Issue 3 Pages 227-228
Published: March 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe crystal structure of isovanillin was determined by a three-dimensional X-ray analysis. The molecules are linked by the O–H···O hydrogen bond (2.741 Å) between the hydroxyl and aldehydic groups and form a linear chain approximately perpendicular to the b axis and parallel to the (201) plane.View full abstract -
Yasuo Ohtsuka, Hiroyuki Akita, Akira Tahara1973 Volume 2 Issue 3 Pages 229-232
Published: March 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSNitration of various dehydroabietic acid derivatives was examined and it was found that nitration was affected by the structure. An interesting substitution occurred at 11,13 (deisopropylation) and 14 positions.View full abstract -
Tateaki Wakamiya, Yuzo Tarumi, Tetsuo Shiba1973 Volume 2 Issue 3 Pages 233-236
Published: March 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSIn a N,O-migration reaction of peptides containing β-hydroxy-α-amino acids in strong acids, it was generally accepted that the configuration on β-carbon atom is retained through the reaction. However, according to our recent investigation using concentrated sulfuric acid as strong acid, a configurational change was observed in the migration reaction. Thus, the threonine residue in peptides was converted to allothreonine residue on the reaction. For the migration reaction accompanying an inversion of configuration, we suggested the mechanism involving SN2 elimination of O-sulfate of threonine residue.View full abstract -
Tamotsu Fujisawa, Hiromichi Ohta, Kikuo Sugimoto1973 Volume 2 Issue 3 Pages 237-238
Published: March 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSAryl arenethiolsulfonates were pyrolyzed in the presence of metallic copper to give the corresponding diaryl sulfides. A complex between thiolsulfonates and the copper was suggested as an intermediate, on the basis of ir spectra.View full abstract -
Masato Tanaka, Yoshihisa Watanabe, Take-aki Mitsudo, Hiroshi Iwane, Yo ...1973 Volume 2 Issue 3 Pages 239-240
Published: March 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSMethyl ethyl ketone, pinacoline and acetophenone are reduced asymmetrically to the corresponding alcohols with a chiral phosphine rhodium complex catalyst, [Rh(NBD) {(R)-PEtMePh}2]+PF6− (NBD = 2,5-norbornadiene).View full abstract -
Kunio Kitajima, Nobutoshi Daimon1973 Volume 2 Issue 3 Pages 241-244
Published: March 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSSynthetic Li-taeniolite LiMg2Li(Si4O10)F2 reacts with water, and nearly free swelling occurs. Its X-ray diffraction spectra show that the interlayer spacing d (001) discontinuously expands with the increase of water content, and eight crystalline swelling steps are observed.View full abstract -
Mitsuo Takasugi, Masaki Anetai, Nobukatsu Katsui, Tadashi Masamune1973 Volume 2 Issue 3 Pages 245-248
Published: March 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThree abscisic acid-related compounds, vomifoliol, dehydrovomifoliol and dihydrophaseic acid, the latter two being new compounds, have been isolated from the roots of “kidney bean” and proved to possess the same absolute configuration at the carbon atom corresponding to C6 (= C1′) of abscisic acid.View full abstract -
Fujiko Iwasaki, Masahiro Sato, Ariyuki Aihara1973 Volume 2 Issue 3 Pages 249-250
Published: March 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe crystal structure of p-hydroxybenzaldehyde was determined by a three-dimensional X-ray analysis. The molecules are linked by the O–H···O=C intermolecular hydrogen bond between hydroxyl and aldehydic groups parallel to the a axis, forming a zig-zag chain elongated along the b axis. The distance of the hydrogen bond, O···O, is 2.67 Å.View full abstract -
Hiroki Haraguchi, Minoru Shiraishi, Keiichiro Fuwa1973 Volume 2 Issue 3 Pages 251-254
Published: March 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSWhen a solution of indium dissolved in HClO4 was aspirated into an air-acetylene flame, molecular absorption spectrum of InCl in the flame was observed by molecular flame absorption spectroscopy. This indicates that the recombination reaction between indium and chlorine occurs in the flame, following the thermal decomposition of HClO4.View full abstract -
Ken Hirotsu, Tadao Kamikawa, Takashi Kubota, Akira Shimada, Takahiko I ...1973 Volume 2 Issue 3 Pages 255-258
Published: March 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSMebadonin was isolated from Isodon Kameba Okuyama and the crystal and molecular structure were determined by means of X-ray analysis.View full abstract -
Hiroshi Kawamoto, Hideo Akaiwa1973 Volume 2 Issue 3 Pages 259-260
Published: March 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSA new solvent extraction technique using salting-out effect is described and shown to be applicable to the rapid and selective determination of iron(III).View full abstract -
Teruaki Mukaiyama, Tsuneo Imamoto, Susumu Kobayashi1973 Volume 2 Issue 3 Pages 261-264
Published: March 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSA new and useful method for the hydrolysis of vinyl chlorides was investigated by the use of EtSH and TiCl4. Various vinyl chlorides, such as α-chlorostilbene, 1,3-diphenyl-1-chloro-1-propene and 2,6-dimethyl-4-chloro-3-heptene, were hydrolyzed to corresponding ketones in good yields at room temperature.View full abstract -
Seiji Takeuchi, Yoshiaki Ohgo, Juji Yoshimura1973 Volume 2 Issue 3 Pages 265-266
Published: March 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSBis(dimethylglyoximato)cobalt(II)-quinine complex catalyzed asymmetric hydrogenation of oleflnic compounds to afford optically active carboxylic acid and amino acid esters. α-Phenylacrylophenone gave higher optical yield (ca. 50%) than α,β-unsaturated esters (7–20%).View full abstract -
Tomoya Kitazume, Nobuo Ishikawa1973 Volume 2 Issue 3 Pages 267-268
Published: March 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESS2,2,4,4-Tetrakis(trifluoromethyl)-1,3-dithietane [1] in KF/DMF system reacted with dienes such as anthracene and styrene , and with monoenes such as cyclohexene and dimethyl maleate, to give corresponding cycloadducts of these alkenes with hexafluorothioacetone [2].View full abstract -
Koichi Ibata, Hirotaka Shimanouchi, Yoshio Sasada1973 Volume 2 Issue 3 Pages 269-272
Published: March 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe crystal structures of the title compounds were determined by X-ray analysis. In spite of overcrowding of the carbonyl oxygen atom and the substituents, the seven-membered rings are nearly planar. There is observed bond alternation in the seven-membered ring, especially the significant elongation of the single bonds neighboring to the carbonyl.View full abstract -
Munan Ko, Tsuneyuki Sato, Takayuki Otsu1973 Volume 2 Issue 3 Pages 273-274
Published: March 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSTo detect and identify radical intermediates in the reaction of N-chlorosuccinimide (NCS) with p-toluenesulfonic acid (PTS), the spin trapping technique has been applied. From the reactions in the presence of some nitrones as spin trapping agent, the ESR spectrum of a nitroxide radical formed by addition of a N-succinimidyl radical to nitrone was observed.View full abstract -
Morio Tsuge, Tatsuya Miyabayashi, Shigeyuki Tanaka1973 Volume 2 Issue 3 Pages 275-278
Published: March 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe free phenol in phenol resole resin was determined by gel permeation chromatography with the high molecular polystyrene as the internal standard. The observed values were in close agreement with that obtained by gas chromatography. The reproducibility was about 4 per cent as the coefficient of variance.View full abstract -
Kaku Uehara, Fujio Kitamura, Makoto Tanaka1973 Volume 2 Issue 3 Pages 279-282
Published: March 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSA general method of obtaining β,γ-unsaturated ketone was provided by the deacetylation of 3-(1-alkenyl)-2,4-pentanedione in the presence of metal acetate (M(OAc)n) or acetylacetonate (M(acac)n). Zn(OAc)2, pb(OAc)2, Cd(OAc)2, Fe(acac)3, and Zn(acac)2 were found to be effective catalysts. 4-Hepten-2-one, 4-hexen-2-one, 5-methyl-4-hexen-2-one, and 5-phenyl-4-penten-2-one were given in high yields.View full abstract -
Takashi Matsumoto, Kenji Fukui, J. D. Edwards, Jr.1973 Volume 2 Issue 3 Pages 283-286
Published: March 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSStereochemistry of the Reformatsky reaction of 3-phenyl-2-butanone with methyl α-bromopropionate has been studied. Subsequently, fulvinic and crispatic acids have been synthesized and their configurations have also been assigned.View full abstract -
Tamotsu Fujisawa, Kazumi Hata, Takakazu Kojima1973 Volume 2 Issue 3 Pages 287-290
Published: March 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSA novel preparation of sulfenylated active methylene compounds has been investigated by the reaction of diaryl disulfides with active methylene compounds in a basic media. Malonates, acetoacetate, acetylacetone, and malononitrile gave selectively the corresponding monosulfenylated compounds at room temperature. At elevated temperatures, only malononitrile afforded a disulfenylated compound, while reactions with other active methylene compounds resulted in decomposition of the monosulfenylated products.View full abstract -
Teruaki Mukaiyama, Masatoshi Hayashi, Koichi Narasaka1973 Volume 2 Issue 3 Pages 291-294
Published: March 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSVarious kinds of sulfides and vinylic or aromatic halides were easily reduced by the combined use of TiCl4 and LiAlH4 to give the corresponding hydrocarbons in high yields.View full abstract -
Kazuhiro Maruyama, Gensho Takahashi1973 Volume 2 Issue 3 Pages 295-298
Published: March 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSA novel type of photochemical reaction between 9,10-phenanthraquinone and glyoxal was discovered and extended to several glyoxals, i,e., methyl-, ethyl-, n-propyl-, i-propyl-, t-butyl-, cyclohexyl-, and phenyl-glyoxals. In these reactions, monoesters of 9,10-dihydroxyphenanthrene could be obtained accompanying with the vigorous evolution of carbon monoxide. The dynamic aspect of these photochemical reactions was investigated using CIDNP technique, and the reverse hydrogen abstraction reaction between two radical species which were resulted from glyoxal and photoexcited 9,10-phenanthraquinone was found to occur.View full abstract -
Yukio Kubota1973 Volume 2 Issue 3 Pages 299-304
Published: March 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe fluorescence lifetimes and quantum yields of various acridine dyes bound to DNA have been measured at a high ratio of DNA phosphate to dye (P/D ratio). The nature of binding sites are discussed on the basis of the values of the observed lifetimes, quantum yields, and the calculated natural lifetimes.View full abstract -
Kiwamu Yamaoka1973 Volume 2 Issue 3 Pages 305-308
Published: March 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSSpectroscopically “metachromatic” crystal violet shows a characteristic γ-band and, by comparison, “normal” malachite green gives rise to a sharp J-band, when each dye is bound to poly-α,L-glutamic acid in helical conformation. These absorption bands are associated with induced Cotton effects of very high magnitude hitherto not observed for acridine dyes.View full abstract -
Kazuhiko Mizuno, Chyongjin Pac, Hiroshi Sakurai1973 Volume 2 Issue 3 Pages 309-310
Published: March 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe photocycloaddition of 9-cyanophenanthrene with a vinyl ether affords a (2 + 2) cycloadduct, 1-cyano-8-alkoxy-2,3;4,5-dibenzobicyclo[4.2.0] octa-2,4-diene (I), but no 1:1-adduct can be obtained with furan, whereas irradiation of 9-cyanoanthracene in the presence of furan gives a (4 + 4) cycloadduct, 1-cyano-7,8;9,10-dibenzo-11-oxatricyclo[4.2.2.12,5] undeca-3,7,9-triene (III), but no 1:1-adduct is given by the irradiation in the presence of vinyl ethers.View full abstract -
Akio Tada, Masatoshi Yoshida1973 Volume 2 Issue 3 Pages 311-312
Published: March 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSP2O5–CaO was prepared and its acidic and basic properties were studied. It was found that P2O5–CaO (0.1 ≤P2O5/CaO ≤ 0.6) had both acidic and basic properties. The maximum strength Ho of acid site and that of base site for P2O5–CaO (mole ratio : 0.2) were 1.5 and 17.2 respectively.View full abstract -
Jun Nakauchi, Masaaki Yokoyama, Keishi Kato, Ken-ichi Okamoto, Hiroshi ...1973 Volume 2 Issue 3 Pages 313-316
Published: March 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe effects of impurities having influence on electro-optical properties of nematic liquid crystal, p-methoxybenzylidene-p′-n-butylaniline, have been investigated under d.c. excitation. For the sample prepared in vacuum, no dynamic scattering was observed but a new domain-like pattern was observed following Williams domain and once the vacuum was broken, the domain pattern changed into a wave-like pattern and dynamic scattering occurred as in the ordinary case.View full abstract -
Takamasa Ibaraki, Isao Kusunoki, Kumasaburo Kodera1973 Volume 2 Issue 3 Pages 317-320
Published: March 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSNO-H chemiluminescence was studied by crossed molecular beams. Anomalously bright light emissions have been observed with low temperature NO beams. It is considered that the chemiluminescence is caused by the 1A″–1A′ transition of HNO formed by the two-body collisions between NO dimers and H atoms. The apparent activation energy and the radiation cross section are estimated to be about −2.8 kcal/mole, and about 2×10−18cm2 for 6000–8300 Å, respectively.View full abstract -
Takashi Matsumoto, Isao Tanaka, Toru Ohno, Kenji Fukui1973 Volume 2 Issue 3 Pages 321-324
Published: March 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESS12-Hydroxy-3-oxototara-1 ,8,11,13-tetraene (Ia) and its cis-isomer (Ib) were synthesized from 3-isopropylanisole (II) via 5-isopropyl-7-methoxy-1-methyl-2-tetralone (XV) by the route of C→B→A ring construction. The spectral data of the synthetic Ia and Ib were different from those of natural shonanol.View full abstract -
Yoshikazu Torihashi, Akira Itaya, Noboru mataga1973 Volume 2 Issue 3 Pages 325-327
Published: March 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSIrradiation of alcohol solutions of pyrene under high pressure led to the formation of photoproduct which shows absorption and fluorescence bands similar to those of 3-hydroxypyrene. The photoproduct disappeared and absorption bands of pyrene recovered completely when the pressure was removed.View full abstract
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