Cation control on the synthesis of p-t-butylthiacalix[4]-(bis)crown ethers

F.W.B. van Leeuwen, H. Beijleveld, Huub Kooijman, Anthony L. Spek, Willem Verboom, David Reinhoudt

Research output: Contribution to journalArticleAcademicpeer-review

31 Citations (Scopus)


Bridging of p-t-butylthiacalix[4]arene with ethylene glycol ditosylates gave diametrically bridged thiacalix[4]monocrowns-4 and -5, 1,2-alternate thiacalix[4]biscrowns-4 and -5 and 1,3-alternate thiacalix[4]biscrown-5, dependent on the metal carbonate used. They show excellent extraction ability towards Ag+ cations. The synthesis of novel diametrically and proximally substituted p-t-butylthiacalix[4](bis)crown ethers and their extraction behavior towards monovalent metal ions are presented.
Original languageEnglish
Pages (from-to)9675-9678
JournalTetrahedron letters
Issue number52
Publication statusPublished - 2002


  • METIS-209403
  • IR-38243

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