Rhodium-Catalyzed Synthesis, Crystal Structures, and Photophysical Properties of [6]Cycloparaphenylene Tetracarboxylates

Norihiko Hayase, Haruki Sugiyama, Hidehiro Uekusa, Yu Shibata, Ken Tanaka

研究成果: Article査読

9 被引用数 (Scopus)

抄録

The synthesis of C2-symmetrical [6]cycloparaphenylene (CPP) tetracarboxylates has been achieved via macrocyclization by the rhodium-catalyzed intermolecular stepwise cross-alkyne cyclotrimerization and subsequent reductive aromatization. The 1H NMR spectra of the thus-obtained C2-symmetrical [6]CPP-tetracarboxylates revealed that the rotation of unsubstituted benzene rings is slow at room temperature. These [6]CPPs formed columnar packing structures, and their absorption maxima were significantly blue-shifted compared to that of nonsubstituted [6]CPP due to the presence of four electron-withdrawing ester moieties.

本文言語English
ページ(範囲)3895-3899
ページ数5
ジャーナルOrganic Letters
21
11
DOI
出版ステータスPublished - 2019 6 7
外部発表はい

ASJC Scopus subject areas

  • 生化学
  • 物理化学および理論化学
  • 有機化学

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