Synthesis and Aggregation of Sulfonamidohelicene and Aminomethylhelicene Oligomers

DOI

Bibliographic Information

Other Title
  • スルホンアミド及びアミノメチル架橋を有するヘリセンオリゴマーの合成と会合

Abstract

Double-helix forming ologomers have attracted much interest. However, the relationship between the primary structure and the double-helix forming ability is not well understood. We synthesized and examined aggregation of sulfonamidohelicene oligomers (M)-1 and aminomethylhelicene oligomers (P)-2 in order to compare their property with ethynylhelicene and amidohelicene oligomers previously obtained. (M)-1 (n = 2-7, 9, 11) were synthesized by stepwise method of coupling reaction with building block and deprotection of Boc moieties. (P)-2 (n = 2-5) were obtained by repeating a reductive amination and deprotection of Boc moieties. CD spectra of tetramer (M)-1 (n = 4) and pentamer (P)-2 (n = 5) exhibited a strong cotton effect in m-difluorobenzene. Vapor pressure osmometry in m-difluorobenzene showed bimolecular formation. These results indicated that both formed helix dimer structures.

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Details 詳細情報について

  • CRID
    1390282680610227584
  • NII Article ID
    130006995628
  • DOI
    10.14895/hannou.37.0.63.0
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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