Journal of Synthetic Organic Chemistry, Japan
Online ISSN : 1883-6526
Print ISSN : 0037-9980
ISSN-L : 0037-9980
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Volume 41, Issue 3
Displaying 1-7 of 7 articles from this issue
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  • Multi-Stage Redox Type Donors and Acceptors
    Recent Developments in Design and Synthesis of TTF, BTP, and TCNE Systems.
    Kazuhiro NAKASUJI, Masakatsu NAKATSUKA, Ichiro MURATA
    1983 Volume 41 Issue 3 Pages 204-220
    Published: March 01, 1983
    Released on J-STAGE: January 22, 2010
    DOIhttps://doi.org/10.5059/yukigoseikyokaishi.41.204
    JOURNAL FREE ACCESS
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    According to a system of classification for multi-stage redox systems proposed by Hünig, tetrathiafulvalene (TTF), bithiopyranylidene (BTP) are considered to be Weitz-type donors whereas tetracyanoquinodimethane (TCNQ) is regarded as Wurster-type acceptor. Recent efforts to explore new redox systems have provided various structural modifications, such as symmetrical, unsymmetrical, condensed, and inserted versions on TTF, BTP, and TCNE. In this review recent progress in design and synthesis of the modified TTF, BTP, and TCNE systems is described.
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  • Structure Elucidation and Synthesis of Leukotrienes
    Shun-ichi HASHIMOTO, Masaaki TODA
    1983 Volume 41 Issue 3 Pages 221-238
    Published: March 01, 1983
    Released on J-STAGE: November 13, 2009
    DOIhttps://doi.org/10.5059/yukigoseikyokaishi.41.221
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    The recent discovery of the new family of compounds, named leukotrienes because of their origin from leukocytes and a structural characteristic, the conjugated triene, has significantly increased our knowledge of arachidonic acid metabolism.
    This review will focus on the chemistry leading to the complete stereochemical elucidation of the leukotrienes, as well as more recent synthetic advances.
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  • α, ω-Diphosphines as Bidentate Ligands
    Teruyuki HAYASHI
    1983 Volume 41 Issue 3 Pages 239-250
    Published: March 01, 1983
    Released on J-STAGE: November 13, 2009
    DOIhttps://doi.org/10.5059/yukigoseikyokaishi.41.239
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    Effects of the structure of diphosphines, especially of n in Ph2P (CH2) nPPh2 (PnP), on the structure, reactivity, catalytic activity and selectivity, and asymmetric induction ability of transition metal complexes are described. The catalytic activity and selectivity change variously depend on n when PnP are used with catalyst metal complexes. P2P is suitable when chelating species is active, while P3P or P4P is superior when dissociation of the diphosphine is necessary. In asymmetric reactions, the diphosphines which form rigid coordination structure bring about high optical yield.
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  • FITS Reagents and New Perfluoroalkylations
    Teruo UMEMOTO
    1983 Volume 41 Issue 3 Pages 251-265
    Published: March 01, 1983
    Released on J-STAGE: November 13, 2009
    DOIhttps://doi.org/10.5059/yukigoseikyokaishi.41.251
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    Electrophilic perfluoroalkylations have been scarcely reported, though they are of great importance for introduction of perfluoroalkyl groups to organic compounds. It was found that FITS-m (m=10-2, 3i), synthesized by the reaction of bis (trifluoroacetoxy) -or difluoroiodoperfluoroalkaneswith benzene and trifluoromethanesulfonic acid, acted as highly reactive electrophilic perfluoro.alkylating agents. FITS underwent the first electrophilic reactions with carbanions, alkenes, alkynes, etc., and afforded many synthetic methods for perfluoroalkylated compounds, of which preparationswere difficult by the conventional, free radical or nucleophilic reactions.
    Studies on the reactivity of FITS led to fortultous discovery of oxy_perfluoroalkylation, a newtype of oxygenation, which made it possible. to prepare perfluoroalkylated carbonyl compoundsdirectly from alkenes under oxygen atmosphere.
    Effective use of the fluorine atoms in the perfluoroalkyl groups as an application of FITS-2 or 3i provided a new synthetic approach to trifluoromethyl-compounds with various functionalgroups.
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  • [title in Japanese]
    Hiroaki KIKUCHI
    1983 Volume 41 Issue 3 Pages 266-269
    Published: March 01, 1983
    Released on J-STAGE: November 13, 2009
    DOIhttps://doi.org/10.5059/yukigoseikyokaishi.41.266
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  • Hexamethyl phosphoramide. (CH3-N-CH3) 3-P=O
    Junzo TOYA
    1983 Volume 41 Issue 3 Pages 270-271
    Published: March 01, 1983
    Released on J-STAGE: November 13, 2009
    DOIhttps://doi.org/10.5059/yukigoseikyokaishi.41.270
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  • Acetone (CH3COCH3)
    Takenori NAGAOKA
    1983 Volume 41 Issue 3 Pages 272-273
    Published: March 01, 1983
    Released on J-STAGE: November 13, 2009
    DOIhttps://doi.org/10.5059/yukigoseikyokaishi.41.272
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