Synthesis and Properties of Cyclic [5]<i>meta</i>-Phenyleneacetylene and Its Corresponding Cyclophane Polyone, [25](1,3)Cyclophanedecaone

  • Jun Yamakawa
    Department of Chemistry, Graduate School of Science and Engineering, Tokyo Metropolitan University
  • Masanori Ohkoshi
    Department of Chemistry, Graduate School of Science and Engineering, Tokyo Metropolitan University
  • Futoshi Takahashi
    Department of Chemistry, Graduate School of Science and Engineering, Tokyo Metropolitan University
  • Tomohiko Nishiuchi
    Department of Chemistry, Graduate School of Science and Engineering, Tokyo Metropolitan University
  • Yoshiyuki Kuwatani
    Department of Chemistry, Graduate School of Science and Engineering, Tokyo Metropolitan University
  • Tohru Nishinaga
    Department of Chemistry, Graduate School of Science and Engineering, Tokyo Metropolitan University
  • Masato Yoshida
    School of Medicine, Faculty of Medicine, Shimane University
  • Masahiko Iyoda
    Department of Chemistry, Graduate School of Science and Engineering, Tokyo Metropolitan University

Abstract

<jats:title>Abstract</jats:title> <jats:p>The cyclic [5]meta-phenyleneacetylene (3) ([5]CMPA) and its corresponding cyclophane polyones 4 and 5 are synthesized. 3, a “missing link” between [4]CMPA and [6]CMPA, shows a fairly pronounced emission, indicating a rigid structure, whereas 5 is colorless in contrast to conventional diarylethane-1,2-diones owing to its conformational mobility and all-s-cis and twisted dione structure.</jats:p>

Journal

  • Chemistry Letters

    Chemistry Letters 37 (7), 784-785, 2008-06-21

    Oxford University Press (OUP)

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