Synthesis of Tetrasilatetrathia[8]circulenes by a Fourfold Intramolecular Dehydrogenative Silylation of C−H Bonds

Yuma Serizawa, Shuhei Akahori, Shohei Kato, Hayato Sakai, Taku Hasobe, Yoshihiro Miyake, Hiroshi Shinokubo

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7 Citations (Scopus)


The first two examples of a tetrasilatetrathia[8]circulene were synthesized in two steps from a tetraiodotetrathienylene by using a fourfold intramolecular dehydrogenative silylation of C−H bonds as the key step. A single-crystal X-ray diffraction analysis revealed that tetrasilatetrathia[8]circulene contains a perfectly planar [8]radialene skeleton. The excited-state dynamics of tetrasilatetrathia[8]circulene were evaluated by steady-state and time-resolved spectroscopic measurements, revealing an efficient intersystem crossing in the excited state.

Original languageEnglish
Pages (from-to)6948-6952
Number of pages5
JournalChemistry - A European Journal
Issue number29
Publication statusPublished - 2017



  • annulation
  • circulenes
  • silylation
  • thiophenes

ASJC Scopus subject areas

  • Chemistry(all)

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