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Volume 3, Issue 6
Displaying 1-37 of 37 articles from this issue
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Masaharu Iwakawa, Juji Yoshimura1974 Volume 3 Issue 6 Pages 519-520
Published: June 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSTwo pairs of 3-O-benzyl-1,2-O-isopropylidene-β-L-idofuranose derivative containing thiazolidine-2-thione and oxazoline-rings at C-5 and C-6 were synthesized.View full abstract -
Hiroshi Nakanishi, Osamu Yamamoto1974 Volume 3 Issue 6 Pages 521-524
Published: June 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe complete line shape analysis of temperature-dependent 13C NMR spectra of formanilide in the system where the populations of the isomers change with temperature was performed by a modified Bloch equation method, and the activation parameters of the restricted rotation around amide bond were determined accurately.View full abstract -
Fusae Nakanishi, Hachiro Nakanishi, Takeshi Tasai, Yasuzo Suzuki, Masa ...1974 Volume 3 Issue 6 Pages 525-528
Published: June 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSp-Formylcinnamic acid (p-FCA) crystal photodimerizes with incorporation of water to give rise to the monohydrated dimer crystal. When p-FCA crystal is photoirradiated in the absence of water, water-free amorphous dimer is obtained. p-Nitro- and p-chlorocinnamic acids were found to dimerize in the same manner as p-FCA.View full abstract -
Tanetoshi Koyama, Kyozo Ogura, Shuichi Seto1974 Volume 3 Issue 6 Pages 529-530
Published: June 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESS8-n-Butylgeranyl pyrophosphate and 10,11-dihydrofarnesyl pyrophosphate act as substrates for the “tail-to-tail” condensation catalyzed by pig liver microsomal enzyme, yielding the corresponding squalene analogs.View full abstract -
Hitoshi Taniguchi, Hiroyuki Hatano1974 Volume 3 Issue 6 Pages 531-534
Published: June 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSA spin trapping technique was applied successfully to the detection and identification of short-lived radicals formed in γ-irradiated aqueous solutions of organic compounds. From an aqueous methanol solution, CH2OH radical is trapped by 2-methyl-2-nitrosopropane. From glycylglycine and glycyl-α-alanine solutions, it is confirmed that hydrogen atoms are abstracted from glycine residues.View full abstract -
Makoto Misono, Yukio Aoki, Yukio Yoneda1974 Volume 3 Issue 6 Pages 535-538
Published: June 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSDehydrobromination of 2-bromobutane and 2,3-dibromobutane proceeded mainly by anti mode over K- and Cs-exchanged silica gel, but syn mode over silica and Li-silica. Upon re-exchange of K and Cs with proton the steric course returned to syn mode. Role of acid-base properties of solid surface and substrate in controlling the steric course was suggested.View full abstract -
Nobuhide Tanaka, Takeshi Iizuka, Tadayoshi Kan1974 Volume 3 Issue 6 Pages 539-544
Published: June 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe isomers of tricyclic hydrocarbons CnH2n−4 having neither side chains nor multiple bonds have been classified into 12 classes from a graph theoretical point of view. We have also found an algorithm for deriving all the structures and the numbers of the isomers, and as an example, we show all the skeletons and the indices of the isomers in the class for C10H16 to which Adamantane belongs.View full abstract -
Seishi Yajima, Kiyohito Okamura, Toetsu Shishido1974 Volume 3 Issue 6 Pages 545-548
Published: June 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe oxide glasses of 3Ln2O3·5Ga2O3 were prepared, using Pr, Nd, Sm, Eu or Gd as a lanthanoid element. Crystallization of the glasses was studied by DTA and X-ray diffraction. A metastable phase was found on the way of the crystallization process of 3Pr2O3·5Ga2O3 and 3Nd2O3·5Ga2O3 glasses terminating in the transition into garnet. However, the phase transition transforming the amorphous phase directly into garnet not through a metastable phase was observed in case of 3Ln2O3·5Ga2O3 glasses (Ln=Sm, Eu or Gd).View full abstract -
Giichi Muto, Atsuo Nakae1974 Volume 3 Issue 6 Pages 549-550
Published: June 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSSeparations of the homologous series of alkylbenzyldimethylammonium chlorides and alkylpyridinium halides having the alkyl groups of C-10, C-12, C-14, C-16 and C-18 were carried out by high performance liquid chromatography. All components were well resolved and the logarithm of the capacity factor was directly proportional to the alkyl chain length.View full abstract -
Minoru Ohki, Akio Takenaka, Hirotaka Shimanouchi, Yoshio Sasada1974 Volume 3 Issue 6 Pages 551-554
Published: June 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSA new interaction mode between cytosine and the carboxyl side group of amino acid has been found in the crystal of 5-bromocytosine: N-tosyl-L-glutamic acid complex by X-ray analysis.View full abstract -
Shizuo Fujiwara, Yoshio Umezawa, Yoji Arata, Hideichi Furuyama1974 Volume 3 Issue 6 Pages 555-558
Published: June 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSProton relaxation for nine aromatic AB2 systems were studied by saturation method. It has been concluded that singlet–triplet transition exists in all the systems examined. Possible mechanisms for this phenomenon were discussed briefly.View full abstract -
Juji Yoshimura, Hiroshi Nakamura, Kenji Matsunari, Yuichi Sugiyama1974 Volume 3 Issue 6 Pages 559-560
Published: June 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSFive-steps conversion of 3,6-dialkyl-1,4-dimethyl-2,5-piperazinediones into the corresponding 3,6-epithio and -epidithio derivatives: i.e. conversion into 3,3α,6,6α-tetrabromide, substitution of 3,6-bromine atoms with methanol, reduction of 3α,6α-bromine atoms, conversion of 3,6-methoxyl groups into mercapto groups, and then oxidation, is described.View full abstract -
Kin-ya Akiba, Toshio Yoneyama, Naoki Inamoto1974 Volume 3 Issue 6 Pages 561-564
Published: June 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSEquilibrium constants of the adduct (3c) from tributylphosphine (4) and phenyl isothiocyanate (5c) were measured in some solvents and 31P-NMR chemical shifts of the adducts (3) from (4) and isothiocyanates (RNCS) (5) were measure in DMF and correlated linearly with the σp values of the R groups.View full abstract -
Teruaki Mukaiyama, Kunimasa Kamio, Koichi Narasaka1974 Volume 3 Issue 6 Pages 565-568
Published: June 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSA wide variety of ethyl 3-indenyl sulfides were easily prepared by the reaction of vinyl sulfides with aldehydes in the presence of various Lewis acids such as aluminum chloride.View full abstract -
Koji Chiba, Eiji Endo, Tokio Sakamoto1974 Volume 3 Issue 6 Pages 569-570
Published: June 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSWhen bis (nitromethyl) prehnitene (1) was treated with 28% aqueous ammonia at 100°C in a sealed tube, N-hydroxytetramethylphthalimide (6″), 2-cyano-3, 4 ,5, 6-tetramethylbenzoic acid (9″) , tetramethylphthalimide (10″) and 2-hydroxy-3-hydroxyimino-4,5,6,7-tetramethylphthalimidine (5″) were formed as ammonium salts.
It seems that (5″) is initially formed, and then rapidly hydrolyzed to produce 6″, which is finally converted to 10″ via 9″.View full abstract -
Katsumi Tokumaru, Akinobu Ohshima, Toshio Nakata, Hirochika Sakuragi, ...1974 Volume 3 Issue 6 Pages 571-574
Published: June 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSDecomposition of dibenzoyl peroxide with singlet sensitization gives phenyl benzoate resulting from the cage recombination between a benzoxyl and a phenyl radical as noticeably as with the direct photolysis; on the contrary, the triplet sensitization gives only low yield of phenyl benzoate.View full abstract -
Yujiro Nomura, Yasushi Kikuchi, Yoshito Takeuchi1974 Volume 3 Issue 6 Pages 575-576
Published: June 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSIt was found chat benz[c]isoxazoles gave (2-acylphenyl)iminotriphenylphosphoranes upon heating with triphenylphosphine in toluene. These iminophosphoranes were considerably stable although they have two reactive groups for the Wittig-type reaction in orthoposition in a molecule. This fact as well as their spectral data suggested the existence of the resonance-stabilized chelate ring.View full abstract -
Yoshihiro Sugi, Sekio Mitsui1974 Volume 3 Issue 6 Pages 577-578
Published: June 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSA series of methylcyclohex-2-enylamines was hydrogenated using Ni, Pd, and Pt catalysts. The product determining steps were discussed on the basis of the variations of the isomer distribution in the products.View full abstract -
Hiroshi Sato, Taro Koshii, Hiroaki Takahashi, Keniti Higasi1974 Volume 3 Issue 6 Pages 579-580
Published: June 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe principal relaxation time of 2-methyl-2-propanol decreases with an addition of solvent (benzene and pyridine). The difference in the hydrogen-bonding capacity of the solvent is not so important in this alcohol as 1-butanol and other isomeric butanols.View full abstract -
Norio Teramae, Kiyozumi Yazawa, Tomoko Matsui, Shigeyuki Tanaka1974 Volume 3 Issue 6 Pages 581-584
Published: June 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe magnetic circular dichroism (MCD) spectra of a series of substituted benzenes were measured. The B values of the 1Lb band of these compounds are discussed in terms of the dipole strengths and wave numbers of the 1Lb and 1La bands, and it is concluded that these B values depend mainly on the contribution of the mixing of the above two states.View full abstract -
Tetsushi Yamashita, Hiroshi Yasueda, Nobuo Nakamura1974 Volume 3 Issue 6 Pages 585-588
Published: June 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSAsymmetric addition of methanol to phenylmethylketene was attempted with optically active low molecular weight and polymeric amines. Both of them were derived from quinine, N-alkylprolinol and ephedrine as propionyl and poly-acryloyl esters. Quinine and N-alkylprolinol catalysts showed a type of remarkable polymer effect with regard to stereoselectivity.View full abstract -
Hirotoshi Sano, Toshiaki Ohnuma1974 Volume 3 Issue 6 Pages 589-592
Published: June 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSIt has been demonstrated that oxalate ligands of trisoxalatochromate(III) and trisoxalatoferrate(III) complex anions located outside the first coordination sphere of the decayed atom are still involved in the local radiolytic processes initiated by the EC-decay. The yields of 57Fe species found in ferrous charge state were interpreted by using radiolytical data on potassium trisoxalatochromate(III) and trisoxalatoferrate(III).View full abstract -
Hideki Takiguchi, Kunio G. Yoshida, Hidenaga Ouchi, Masayuki Yoshida, ...1974 Volume 3 Issue 6 Pages 593-594
Published: June 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe aromatic tritiation induced by irradiation of mixtures of aromatic compounds and propanethiol[S3H] was studied with respect to the tritium distribution in the nucleus and the relative rate of tritiation. A mechanism involving a reaction of an excited aromatic molecule with the thiol is proposed.View full abstract -
Ryokichi Tsuchiya, Akira Uehara, Eishin Kyuno1974 Volume 3 Issue 6 Pages 595-598
Published: June 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESS[Cr(NH3)6][Al(nta)2]· 4H2O was newly prepared, of which solid-phase thermal reaction was investigated by means of derivatography. The results showed that the complex converts finally into Al[Cr(nta)2]. The reaction is unique in respect to both involvement of metal substitution and occurrence of variation in coordination types of the nitrilotriacetate ions.View full abstract -
Sadao Tanaka, Tetsuya Abe, Toshiro Yamashina1974 Volume 3 Issue 6 Pages 599-602
Published: June 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe crystal structure and resistivity of silver films sputtered in an oxygen atmosphere and the thermal desorption of oxygen from these films were studied. The sputtered silver films prepared under the oxygen of 1.5×10−4 and 3×10−4 Torr contained very fine fcc silver crystals and Ag2O crystals. The thermal desorption showed that all the reactive sputtered silver films contained a considerable amount of an amorphous phase.View full abstract -
Takashi Matsumoto, Kenji Fukui, Mutsumu Nanbu1974 Volume 3 Issue 6 Pages 603-605
Published: June 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSTrans-meranzinic acid, (+)-II, was synthesized from 2-hydroxy-4-methoxy-3-(3-methylbut-2-enyl)benzaldehyde (V) via (±)-2,3-dihydro-7-formyl-2-(1-hydroxy-1-methylethyl)-4-methoxybenzofuran (VII) and (±)-II which was successfully resolved by means of cinchonidine. Subsequently, (+)-II was subjected to exhaustive ozonolysis to afford known (+)-(R)-3-hydroxy-4,4-dimethylbutyrolactone (X). Thus, the stereochemistry of C-2 in (+)-II was assigned as R-configuration.View full abstract -
Norihiko Yoneda, Tsuyoshi Fukuhara, Yukio Takahashi, Akira Suzuki1974 Volume 3 Issue 6 Pages 607-610
Published: June 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe carboxylation of diisobutene and 1-octene with carbon monoxide using Cu(I)carbonyl as catalyst in BF3–H2O takes place smoothly at room temperature to produce tertiary carboxylic acids in high yields. The present procedure is superior to that using the same catalyst in concentrated H2SO4, both from a point of view of high yield of carboxylic acids and ready separation of such acids from the catalyst layer.View full abstract -
Shoji Takagi, Hiroyuki Nomori, Masahiro Hatano1974 Volume 3 Issue 6 Pages 611-616
Published: June 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe vibrational structure in circular dichroism spectrum of D-phenylglycine in the wavelength region corresponding to the α-band of the phenyl chromophore was observed at room temperature and at liquid nitrogen temperature. We analyzed this vibrational structure in comparison with that of L-phenylalanine.View full abstract -
Tomoya Sakai, Masayuki Hattori1974 Volume 3 Issue 6 Pages 617-620
Published: June 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSNon-catalytic hydrocracking of 9,10-anthraquinone at 600–900°C proceeded as a typical consecutive reaction yielding fluorenone plus CO in the first step, biphenyl plus CO and benzene in the succeeding steps. The found reaction which is expected to occur for general quinones has an important industrial meaning in the hydrocracking of petroleum heavy residues.View full abstract -
Shigeru Oae, Tadamitsu Sakurai, Seizi Kozuka1974 Volume 3 Issue 6 Pages 621-624
Published: June 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe reactions of N,N-dibenzyl-O-p-nitrobenzoylhydroxylamine (DNH) with nucleophiles were found to give benzaldehyde, benzylamine and p-nitrobenzoate ion in good yields, respectively. It has been suggested that these reactions would proceed via E2 mechanism on the nitrogen atom on the basis of kinetic isotope experiment. Furthermore, SN2 mechanism on the nitrogen atom has been inferred for the reaction of DNH with cyanide ion.View full abstract -
Isao Kuwajima, Kosaku Sugimoto, Toshiaki Murofushi1974 Volume 3 Issue 6 Pages 625-626
Published: June 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESS1-Phenylthio-1,3-butadiene derivatives were prepared in good yield via 1,2-elimination reaction of acetoxy and phenylthio group by treating the corresponding 1-[bis(phenylthio)methyl] allyl acetate with dialkylcopper lithium.View full abstract -
Yusuke Kamura, Ichimin Shirotani, Hiroo Inokuchi, Yusei Maruyama1974 Volume 3 Issue 6 Pages 627-630
Published: June 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe absorption spectra of the oriented and amorphous naphthacene and pentacene films were measured at room temperature. The electronic state and the reactivity for both states were discussed.View full abstract -
Hideki Kinoshita, Hiroshi Kotake1974 Volume 3 Issue 6 Pages 631-634
Published: June 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe selective cleavage of BOC-peptide-OBut was investigated by the use of 85% formic acid, and it was found that BOC-peptide-OBut gave H-peptide-OBut in good yield by this procedure. This method was also applied to investigation of the selectivity of di-t-butyl esters of dibasic amino acids and N-deprotection of peptides containing these amino acids.View full abstract -
Toshikatsu Okuno, Yuichi Ishita, Ko Sawai, Takeshi Matsumoto1974 Volume 3 Issue 6 Pages 635-638
Published: June 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSAlternariolide, a host-specific toxin responsible for Alternaria blotch of apple, has been characterized as a depsipeptide of the planar formula 1 on the basis of spectroscopic evidence.View full abstract -
Harumichi Tsukada, Hirotaka Shimanouchi, Yoshio Sasada1974 Volume 3 Issue 6 Pages 639-642
Published: June 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe crystal structure of anhydrous diphenylcyclopropenone was determined and the structural features are compared with those in its monohydrate. The systematic variation of the molecular geometry found is attributable to the contribution from a dipolar ionic form, enhanced by the formation of the hydrogen bond.View full abstract -
Kunio Fukushima1974 Volume 3 Issue 6 Pages 643-644
Published: June 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSFar-infrared spectra of β-hydroquinone clathrate of acetonitrile were found to change with time. The change is explained by decomposition of β-hydroquinone clathrate of acetonitrile into α-hydroquinone.View full abstract -
Yoshio Nakamura, Hidefumi Hirai1974 Volume 3 Issue 6 Pages 645-650
Published: June 05, 1974
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe complex of polyacrylic acid with rhodium(III) functions as a homogeneous catalyst for the hydrogenation of terminal alkenes in methanol solution at 30°C under an atmospheric pressure of hydrogen. The triethylammonium salt of the complex is effective for the hydrogenation of internal alkenes as well as terminal alkenes.View full abstract
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