Chemical braking exhibited by ethynylhelicene (M)-nonamer in solution: Competitive reaction system of self-catalysis to form double-helix and approach towards equilibrium to form random-coil

Tsukasa Sawato, Atsushi Yagi, Mieko Arisawa, Masahiko Yamaguchi

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Chemical braking occurs in a dilute solution during a structural change of ethynylhelicene (M)-nonamer from the metastable double-helix state to the random-coil state, being at equilibrium, where the reaction is initially rapid and then substantially retard. The chemical braking is derived from the competitive chemical reaction system in dilute solution: An energetically uphill self-catalytic reaction to form double-helix and the downhill reaction to form the random-coil.

Original languageEnglish
Pages (from-to)2801-2805
Number of pages5
JournalTetrahedron
Volume73
Issue number19
DOIs
Publication statusPublished - 2017 Jan 1

Keywords

  • Chemical braking
  • Competitive reaction
  • Helicene
  • Metastable
  • Self-catalysis

ASJC Scopus subject areas

  • Biochemistry
  • Drug Discovery
  • Organic Chemistry

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