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Polymer Bulletin

, Volume 48, Issue 6, pp 423–429 | Cite as

Two stereoisomers of C-unalkylated calix[4]resorcinarene and the conformation change

  • Daixin Li
  • Toshie Suzuki
  • Gen-ichi Konishi
  • Tada-Aki Yamagishi
  • Yoshiaki Nakamoto

Summary

C-unalkylated calix[4]resorcinarene octamethyl ether was prepared by the HCl-catalyzed condensation of 1,3-dimethoxybenzene with paraformaldehyde in 2-ethoxyethanol. The conformation of the C-unalkylated calix[4]resorcinarene was preferentially chair-like when the large amount of conc.HCl was used. The conformation changed from a chair-like to a boat-like isomer by heating in the temperature range from 240 to 250 °C in bulk.

Keywords

Ether Paraformaldehyde Conformation Change Octamethyl 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2002

Authors and Affiliations

  • Daixin Li
    • 1
  • Toshie Suzuki
    • 2
  • Gen-ichi Konishi
    • 2
  • Tada-Aki Yamagishi
    • 2
  • Yoshiaki Nakamoto
    • 1
  1. 1.Graduate School of Natural Science and Technology, Kanazawa University, Kodatsuno 2-40-20, Kanazawa 920-8667, JapanJP
  2. 2.Faculty of Engineering, Kanazawa University, Kodatsuno 2-40-20, Kanazawa 920-8667, Japan e-mail : yamagisi@t.kanazawa-u.ac.jp Fax : +81-76-234-4800JP

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