4,7-Bis(dimethylamino)benzimidazoles and twin-type derivatives: Reversible two-stage redox system modulated by- proton-transfer

Takanori Suzuki, Yoshiaki Tsubata, Yoshiaki Obana, Takanori Fukushima, Tsutomu Miyashi, Mayu Saito, Hidetoshi Kawai, Kenshu Fujiwara, Kimio Akiyama

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

The title electron donors 1 as well as their conjugate bases 2- undergo reversible two-stage one-electron oxidation. ESR analysis indicated the important contribution of zwitterionic structure for radicals 2·. Bis(zwitterionic) but not quinoid structure was suggested for p-4, generated from the twin-type dianionic donor p-42- with a p-phenylene spacer.

Original languageEnglish
Pages (from-to)7881-7884
Number of pages4
JournalTetrahedron Letters
Volume44
Issue number43
DOIs
Publication statusPublished - 2003 Oct 20

Keywords

  • Electrochromism
  • Electron donor
  • Phenylenediamine
  • Proton transfer
  • Radical
  • Redox system
  • Response system
  • Zwitterion

ASJC Scopus subject areas

  • Biochemistry
  • Drug Discovery
  • Organic Chemistry

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