Journal of Synthetic Organic Chemistry, Japan
Online ISSN : 1883-6526
Print ISSN : 0037-9980
ISSN-L : 0037-9980
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Volume 34, Issue 1
Displaying 1-8 of 8 articles from this issue
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  • Chemical Reaction in Liquid Crystalline States
    Yoshio TANAKA
    1976 Volume 34 Issue 1 Pages 2-16
    Published: January 01, 1976
    Released on J-STAGE: November 13, 2009
    DOIhttps://doi.org/10.5059/yukigoseikyokaishi.34.2
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    The chemical reaction, especially organic reaction, in the thermotropic liquid crystalline states was extensively reviewed and discussed on the light of the characteristics of mesophase. The thermal degradation, Claisen rearrangement, photoisomerization and polymerization of no mesomorphic compounds in liquid crystalline solvents were elucidated by the diffusibility, solubility and orientation of the solute and by the alteration in the structure and stability of the mesomorphic media. Polymerization, hydrolysis, oxidation or reduction and carbonization of mesomorphic compounds were also surveyed from the view point of the topochemical phenomena as a result of the long-range order associated with the mesomorphic phases.
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  • Photoelectron Spectroscopy and its Application to Chemistry
    Tsunetoshi KOBAYASHI
    1976 Volume 34 Issue 1 Pages 17-29
    Published: January 01, 1976
    Released on J-STAGE: January 22, 2010
    DOIhttps://doi.org/10.5059/yukigoseikyokaishi.34.17
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    The present status of photoelectron spectroscopy was reviewed. The fundamental points essential to the measurement and interpretation of photoelectron spectra were summarized concisely, and the application of photoelectron spectroscopy to chemistry was surveyed.
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  • Mechanism of Formation of γ-Methyl L-Glutamate NCA by Use of Trichloromethyl Chloroformate
    Yoichi KOIWA, Keizo TATSUKAWA, Masayuki TERANISHI, Yasuo FUJIMOTO
    1976 Volume 34 Issue 1 Pages 30-35
    Published: January 01, 1976
    Released on J-STAGE: January 22, 2010
    DOIhttps://doi.org/10.5059/yukigoseikyokaishi.34.30
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    The mechanism for the formation of γ-methyl-N-carboxy-L-glutamate anhydride (MLG·NCA) by use of trichloromethyl chloroformate (TCF) was studied in a solvent system of chlorobenzene-dioxane (15 : 1 volume ratio). The reaction was followed by measuring the reaction temperature, the amount of remaining MLG and formed NCA at time intervals. The results revealed that the reaction was composed of two stages ; the frist stage was the reactions[1][3] and the subsequent stage was the reactions [4] and [5].
    RC-NH2H-COOH+Cl-C-O-O-CCl3→ RC-NH-C-O-OCCl3H-COOH+HCl→R C-NH-CO-O-H-CO-O-+COCl2+2HCl [1]
    RC-NH2-H-COOH+COCl2→R-NHCOCl-CH-COOH+HCl→RC-NH-CO-O-H-CO-O+2HCl [2]
    4RC-NH2-H-COOH+ 4 HCl→4 R C-NH2·HCl-H-COOH [3]
    RC-NH2·HCl-H-COOH+Cl-C-O-O-CCl3→RC-NH-C-O-OCCl3H-COOH+2HCl→RC-NH-CO-OH-OCO-O+COCl2+3HCl [4]
    RC-N2·HClH-COOH+COCl2→RC-NHCOOlH-CO0H+2HCl→RC-NH-CO-OH-OCO-O+3HCI [5]
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  • Radio Frequency Discharge Reaction of Benzene with Acetonitrile
    Shoichi KIKKAWA, Masakatsu NOMURA, Yukio MORITA
    1976 Volume 34 Issue 1 Pages 36-40
    Published: January 01, 1976
    Released on J-STAGE: November 13, 2009
    DOIhttps://doi.org/10.5059/yukigoseikyokaishi.34.36
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    The reaction of benzene-acetonitrile vapor mixture under the influence of rf. glow discharge has been studied. The analysis of liquid component obtained from liquid nitrogen trap indicated the formation of C6H5CN, C6H5CH2CN, and o-, m-, and p-CH3C6H4CN and C6H4 (CN) 2 along with the characteristic products gained from the discharge reaction of benzene itself (and also acetonitrile itself). The glow discharge reaction of acetonitrile afforded cyano derivatives such as C2H5CN, C3H7CN, CH3CH=CHCN, CH2 (CN) 2, (CH2CN) 2 and NC (CH2) 3CN. The formation of C2 (CN) 4 was suggested by examining an esr spectrum of the resulting liquid products.
    Trapping experiments of active species in glow discharge reaction using phenyl-N-t-butylnitrone as aspin trapping reagent detected the presence of benzyl radical in glow discharge reaction of benzene.
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  • The Stereochemistry of Cycloaddition of 1-Phenylpyridinio-3-oxide
    Yujiro NOMURA, Yasushi TAKAHASHI, Yoshito TAKEUCHI
    1976 Volume 34 Issue 1 Pages 41-42
    Published: January 01, 1976
    Released on J-STAGE: November 13, 2009
    DOIhttps://doi.org/10.5059/yukigoseikyokaishi.34.41
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    It was found that 1, 3-dipolar cycloaddition of 1-phenylpyridinio-3-oxide with diethyl maleate or fumarate proceeded through a suprafacial concerted mechanism, but was accompanied by a two-step, non-stereospecific reaction when it was carried out in polar condition.
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  • Safe Handling of Compressed Gases and Autoclave
    Shozo MASUDA
    1976 Volume 34 Issue 1 Pages 43-48
    Published: January 01, 1976
    Released on J-STAGE: November 13, 2009
    DOIhttps://doi.org/10.5059/yukigoseikyokaishi.34.43
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    Basic informations of the regulations on compressed, liquefied and toxic gas cylinders, and a treatments on the safe handling of these gases in research laboratories are described, and for example, cylinder safety code, cylinder valves, general precautions for handling and storing, pressure regulator, cylinder receiving operations and precaution for use of autoclave are treated in the following chapters.
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  • The Meyers' Synthesis of Aldehydes
    Synthesis via Dihydro-1, 3-oxazines
    Aiko NABEYA
    1976 Volume 34 Issue 1 Pages 49-54
    Published: January 01, 1976
    Released on J-STAGE: November 13, 2009
    DOIhttps://doi.org/10.5059/yukigoseikyokaishi.34.49
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    A technique is described for the preparation of aldehydes based upon the dihydro-1, 3-oxazine ring system. 2, 4, 4, 6-Tetramethyl- (1a) or 2-benzyl-4, 4, 6-trimethyl-5, 6-dihydro-1, 3-oxazine (1b) can be smoothly con-verted into the lithio salts on treatment with organolithium reagents in THF at -78°. The lithio salts are excellent nucleophiles and react with alkyl halides or carbonyl compounds to give elaborated oxazines. The crude oxazines are reduced with sodium borohydride at pH 7 in a THF-EtOH-H2O mixture at -40° to give the tetrahydro-1, 3-oxazines (2), which on hydrolysis with aqueous oxalic acid give the aldehydes. No purification of the intermediates is necessary, and the aldehydes are isolated simply by steam distillation or extraction with organic solvents after hydrolysis. Thus, substituted acetaldehydes and α, β -unsaturated aldehydes are obtained in overall yields of 4574%. Reduction of (2) with sodium borodeuteride gives C-1 deuterated aldehydes. Modification of the method affords a variety of functionalized aldehydes and aldehyde derivatives, and further enables the introduction of CHO groups into compounds with complex structures.
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  • [title in Japanese]
    [in Japanese], [in Japanese]
    1976 Volume 34 Issue 1 Pages 55
    Published: January 01, 1976
    Released on J-STAGE: November 13, 2009
    DOIhttps://doi.org/10.5059/yukigoseikyokaishi.34.55
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