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Volume 1, Issue 2
Displaying 1-27 of 27 articles from this issue
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Teikichi Sasaki, Shin-ichi Ohno, Kiyoshi Kawatsura1972 Volume 1 Issue 2 Pages 91-94
Published: February 05, 1972
Released on J-STAGE: April 19, 2006
JOURNAL FREE ACCESSThe yields of the trapped electron produced in alkyl alcohol and ethylene glycol at 77 °K glasses were determined. For all alcohol glasses, the yields declined in the high dose irradiation of gamma rays. It has been shown that the maximum concentration of the trapped electron increases with dielectric constant of the alcohol.View full abstract -
Hiroshi Yokoi, Taro Isobe1972 Volume 1 Issue 2 Pages 95-98
Published: February 05, 1972
Released on J-STAGE: April 19, 2006
JOURNAL FREE ACCESSThe ESR experiments show that the 1:2 complexes of copper(II) with amino acids are present in frozen aqueous solution as a kind of aggregates, whose structures are different from those in crystals, and the aggregates disperse into dimers and monomers in the frozen aqueous solutions containing alcohols, protein denaturants, or certain inorganic salts.View full abstract -
Sei-ichi Hayashi, Nobuo Ishikawa1972 Volume 1 Issue 2 Pages 99-100
Published: February 05, 1972
Released on J-STAGE: April 19, 2006
JOURNAL FREE ACCESSOctafluoroacridone [6] has been conveniently prepared via the reaction between tetrafluorobenzyne and tetrafluoroanthranilic acid, followed by cyclization of the resulting N-tetrafluorophenyltetrafluoroanthranilic acid. Some derivatives of 6 were also prepared.View full abstract -
Satoru Onaka1972 Volume 1 Issue 2 Pages 101-102
Published: February 05, 1972
Released on J-STAGE: April 19, 2006
JOURNAL FREE ACCESSA reaction of Cl3Sn–Mn(CO)5 with KMnO4 in a mixed solvent afforded ClMn(CO)5 and a tin–hydroxo compound. The manganese atom in Cl3Sn–Mn(CO)5 is oxidized mildly from 0 to +1 in oxidation number by KMnO4.View full abstract -
Okitsugu Kajimoto, Takayuki Fueno1972 Volume 1 Issue 2 Pages 103-106
Published: February 05, 1972
Released on J-STAGE: April 19, 2006
JOURNAL FREE ACCESSA theoretical expression has been derived for the magnetic shielding constant of aliphatic hydrogens, without using the customary point dipole approximation. The expression, combined with CNDO/2 electron densities, has correctly reproduced the 1H chemical shifts observed for various substituted ethylenes and butadienes. It is concluded that the diamagnetic shielding from the neighboring carbon constitutes an important contribution to the shifts.View full abstract -
Naoki Inamoto, Shozo Masuda, Atsuko Terui, Kazuo Tori1972 Volume 1 Issue 2 Pages 107-110
Published: February 05, 1972
Released on J-STAGE: April 19, 2006
JOURNAL FREE ACCESSThe values of 13C–H and 13C–C–H coupling constants of the formyl group in substituted benzaldehydes followed the Hammett equation. The ρ(JC–H) value was found to be considerably larger than that for substituted toluenes. Values for ρo (JC–H) and ρo(JC–C–H) are also discussed.View full abstract -
Tomoaki Nagamachi, Akira Nishinaga, Teruo Matsuura1972 Volume 1 Issue 2 Pages 111-114
Published: February 05, 1972
Released on J-STAGE: April 19, 2006
JOURNAL FREE ACCESSAutoxidation of halogenated methyl thyropropionates catalyzed by bis(3-salicylideneaminopropyl)aminecobalt(II) gave rise to direct cleavage of their diphenyl ether linkage. The reaction provides a model for the enzymic degradation of thyroxine to form diiodotyrosine.View full abstract -
Shigeru Terabe, Kazuo Kuruma, Ryusei Konaka1972 Volume 1 Issue 2 Pages 115-118
Published: February 05, 1972
Released on J-STAGE: April 19, 2006
JOURNAL FREE ACCESSPhenoxazine-N-oxyl was produced from the phenoxy radical in the ESR spin trapping technique using nitrosobenzene, and the mechanism of formation was deduced from the results of trapping using deuterated compounds and by product analysis.View full abstract -
Kiyosi Kondo, Iwao Ojima1972 Volume 1 Issue 2 Pages 119-122
Published: February 05, 1972
Released on J-STAGE: April 19, 2006
JOURNAL FREE ACCESSThe thermal decomposition of a sodium salt of 4-phenylthio-4-methyl-2-pentanone tosylhydrazone in diglyme at 150–160°C afforded a mixture of 1,2,2-trimethylcyclopropyl phenyl sulfide (17%), 2,2,3a-trimethyl-1,2,3,3a-tetrahydro-1-thiaazulene (9%), and isomeric 4-phenylthio-4-methylpentenes (74%). Analogous mixtures in varying amounts were obtained from tosylhydrazones derived from 4-phenylthio-2-butanone, 3-phenylthiobutyrophenone, and 3-phenylthio-3-methylbutyrophenone.View full abstract -
Motoo Shiro, Yasuo Nakao, Osamu Yamauchi, Akitsugu Nakahara1972 Volume 1 Issue 2 Pages 123-124
Published: February 05, 1972
Released on J-STAGE: April 19, 2006
JOURNAL FREE ACCESSCrystals of chloroglycylglycinatocopper(II) monohydrate crystallized from acid solution are monoclinic, space group P21/c, with 8 formula units in a cell. The copper(II)-glycylglycine chelate has a dimeric structure, in which the peptide is bonded to two copper atoms - to one through the terminal nitrogen and the peptide oxygen and to the other through the terminal oxygen. The copper atom is five-coordinated and has a distorted square pyramidal coordination polyhedron.View full abstract -
Hiroshi Kawaguchi, Keiji Matsumoto, Hisao Kuroya, Shinichi Kawaguchi1972 Volume 1 Issue 2 Pages 125-127
Published: February 05, 1972
Released on J-STAGE: April 19, 2006
JOURNAL FREE ACCESSThe crystal structure of (−)589-[Co acac tn2] [As-(+)-tart]2 H2O has been determined by the X-ray method. The absolute configuration of the complex cation can be nenoted as Δ. A simple empirical rule, proposed by Mason et al., relating the sign of the Cotton effect of a particular electronic transition to the absolute configuration of the metal complex seems to hold in this case.View full abstract -
Takayuki Suga, Tsuyoshi Shishibori, Sanae Kimoto1972 Volume 1 Issue 2 Pages 129-130
Published: February 05, 1972
Released on J-STAGE: April 19, 2006
JOURNAL FREE ACCESSThe distribution of deuterium in squalene and β-amyrin biosynthesized from [6-D3]-mevalonic acid in Pisum sativum has been analyzed by NMR spectroscopy. It was thus proved that the cis-terminal methyls of squalene and the 4β-methyl group of β-amyrin are stereospecifically derived from the 3-methyl group of mevalonic acid.View full abstract -
Kazuhiro Maruyama, Tetsuo Otsuki, Akio Takuwa1972 Volume 1 Issue 2 Pages 131-134
Published: February 05, 1972
Released on J-STAGE: April 19, 2006
JOURNAL FREE ACCESSPhoto-reduction of p-benzoquinone and its methyl- or chloro-derivatives has been investigated using the CIDNP technique. Strongly polarized PMR signals due to p-benzoquinones themselves, active reaction intermediates and hydroquinones were observed during the course of the reactions. From these results, the reaction scheme of these photo-reductions was proposed.View full abstract -
Kazuhiro Maruyama, Akio Takuwa1972 Volume 1 Issue 2 Pages 135-138
Published: February 05, 1972
Released on J-STAGE: April 19, 2006
JOURNAL FREE ACCESSPhotochemical reaction between 1,2-naphthoquinone and xanthene was studied. By a smooth reaction photo-adduct is produced as white needles after irradiation for several hours. Structure of the photo-adduct was determined as (7) through the investigation by PMR, IR, Mass, and elemental analysis. The photo-adduct between the o-quinone and the hydrogen donor having such a type of structure have never been reported so far. This reaction was examined from the dynamical point of view using CIDNP technique and the results substantiated further the structure (7).View full abstract -
Hironori Kageyama, Masanobu Hidai, Yasuzo Uchida1972 Volume 1 Issue 2 Pages 139-140
Published: February 05, 1972
Released on J-STAGE: April 19, 2006
JOURNAL FREE ACCESSThe cobalt complex of α,β,γ,δ-tetraphenylporphine reduced by electrolysis had the catalytic activity of dehydrogenating cyclohexene to 1,5- and 1,4-cyclohexadiene and benzene. The composition of the dehydrogenated products depended upon the solvents used. An anion radical of Co(I) complex was assumed the intermediate based on e.s.r. and polarographic data.View full abstract -
Yukihiro Asaka, Tadao Kamikawa, Takashi Kubota, Harunari Sakamoto1972 Volume 1 Issue 2 Pages 141-144
Published: February 05, 1972
Released on J-STAGE: April 19, 2006
JOURNAL FREE ACCESSFrom spectroscopic evidence, the two seco-iridoids ligstro-side and 10-hydroxyligstroside, isolated from Ligstrum obtusifolium Sieb. et Zucc., are assigned the structures (I) and (V), respectively.View full abstract -
Yasuhiko Shirota, Kiyoshi Kawai, Naoto Yamamoto, Kazuhiro Tada, Hirosh ...1972 Volume 1 Issue 2 Pages 145-146
Published: February 05, 1972
Released on J-STAGE: April 19, 2006
JOURNAL FREE ACCESSFormation of transient ion-radicals in the photosensitized reaction of N-vinylcarbazole with p-chloranil as an acceptor has been demonstrated for the first time by means of flash spectroscopy.View full abstract -
Yoshihiro Nagao, Kensuke Shima, Hiroshi Sakurai1972 Volume 1 Issue 2 Pages 147-150
Published: February 05, 1972
Released on J-STAGE: April 19, 2006
JOURNAL FREE ACCESSThe photochemical and thermal reactions of diethyl phenylazophosphonate with cyclohexene afforded two 1:1 adducts. In the photochemical reaction, there was the wavelength dependence for the formation of the adducts. It was proposed that the active species for the formation of the adducts were different between the thermal and photochemical reactions.View full abstract -
Suketaka Ito1972 Volume 1 Issue 2 Pages 151-153
Published: February 05, 1972
Released on J-STAGE: April 19, 2006
JOURNAL FREE ACCESSChloroacetylhydrazones were allowed to react with sodium alkoxide in alcohol to give acetic ester of the alcohol and unsymmetrical ethers derived from the alkoxide and the alkylidene moiety of the hydrazones. Secondary and tertiary alkoxides failed to afford any amount of ethers. High yields of ethers were realized especially in the reaction of cyclohexanone chloroacetylhydrazone.View full abstract -
Tadao Shingaki, Masao Inagaki, Noboru Torimoto, Matsuji Takebayashi1972 Volume 1 Issue 2 Pages 155-158
Published: February 05, 1972
Released on J-STAGE: April 19, 2006
JOURNAL FREE ACCESSEthyl azidoformate was decomposed on heating or by irradiation with UV in trans- and cis-1,4-dimethylcyclohexanes. Relative reactivities of the nitrene insertion toward axial and equatorial C–H bonds were calculated from the results. It was found that the reactivities toward axial C–H bonds were less than those of equatorial C–H bonds.View full abstract -
Fumitaka Takami, Shigeru Wakahara, Takashi Maeda1972 Volume 1 Issue 2 Pages 159-162
Published: February 05, 1972
Released on J-STAGE: April 19, 2006
JOURNAL FREE ACCESSThe UV spectral changes and decomposition rates of ethyldithio-carbamic acid (I) were investigated in sulfuric acid solutions. The presence of the S-protonated form (IV) was established. The observed first-order rate constants fit with the rate expression, kobs = kK/(h0 + K), derivable from the proposed mechanism, IV\oversetK⇔I \oversetk→ EtNH2 + CS2.View full abstract -
Toshiyuki Shono, Yoshihiko Fujii, Koichiro Shinra1972 Volume 1 Issue 2 Pages 163-164
Published: February 05, 1972
Released on J-STAGE: April 19, 2006
JOURNAL FREE ACCESSBis(triphenylphosphine)acetylacetonato copper(I) and analogous seven copper(I)triphenylphosphine chelates were prepared from various cupric complexes by reducing directly with triphenylphosphine.View full abstract -
Motonori Tamaki, Isao Masuda, Koichiro Shinra1972 Volume 1 Issue 2 Pages 165-166
Published: February 05, 1972
Released on J-STAGE: April 19, 2006
JOURNAL FREE ACCESSBy the reaction of MnII(Salen) (Salen: bis(salicylaldehyde)ethylenediiminato dianion) with NO in DMSO, NO is reductively decomposed to give N2O and N2, and a new oxygenated manganese complex (Mn-O(Salen)]2O2 is formed. The complex shows IR absorption bands at 623 and 640 cm−1 attributed to νMn-O, and at 884 cm−1 attributed to νMn-O, indicating both oxo- and μ-peroxo-bonding in the complex.View full abstract -
Tadakazu Tsuji, Masako Muraoka1972 Volume 1 Issue 2 Pages 167-168
Published: February 05, 1972
Released on J-STAGE: April 19, 2006
JOURNAL FREE ACCESSTreatment of 5-amino- and 5-nitro-5-methyl-1,3-disubstituted hexahydropyrimidines with palladium chloride gave the corresponding 3,4,5,6-tetrahydropyrimidinium chlorides, which were also obtained from the air oxidation of hexahydropyrimidine hydrochlorides in the presence of palladium black.View full abstract -
Nobuo Ishikawa, Tomoya Kitazume1972 Volume 1 Issue 2 Pages 169-170
Published: February 05, 1972
Released on J-STAGE: April 19, 2006
JOURNAL FREE ACCESSN-Substituted hexafluoroisopropylidenimines were synthesized from hexafluorothioacetone dimer [1] by treatment with either aryl or alkylamines. The phenylhydrazone and semicarbazone of hexafluoroacetone were also obtained directly from 1 and carbonyl reagents.View full abstract -
Shigeaki Fujieda, Morio Setaka, Takao Kwan1972 Volume 1 Issue 2 Pages 171-172
Published: February 05, 1972
Released on J-STAGE: April 19, 2006
JOURNAL FREE ACCESSThe photolysis of ethane adsorbed on alumina gave rise to an ESR spectrum consisted of ten hyperfine lines instead of twelve. It was suggested that S–\dotCHCH3 radicals are formed and that the methyl group can not rotate freely around the C–C axis.View full abstract -
Fumio Toda, Toshiaki Kataoka1972 Volume 1 Issue 2 Pages 173-174
Published: February 05, 1972
Released on J-STAGE: April 19, 2006
JOURNAL FREE ACCESS2,3-Bis(diphenylmethylene)-4-benzylidenecyclobatanone (VII) was prepared and its spectral data were compared with those of 2,4- (IX) and 3,4 bis(diphenylmethylene) cyclobutanedione (X).View full abstract
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