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Water-solublepara-Sulfonated 1,2;3,4-Calix[4]arene-biscrowns in the 1,2-Alternate Conformation

✍ Scribed by Alexandre Mathieu; Zouhair Asfari; Pierre Thuéry; Martine Nierlich; Sylvain Faure; Jacques Vicens

Book ID
110304395
Publisher
Springer Netherlands
Year
2001
Tongue
English
Weight
163 KB
Volume
40
Category
Article
ISSN
0923-0750

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Water-soluble para-sulfonated 1,2;3,4-ca
Water-soluble para-sulfonated 1,2;3,4-calix[4]arene-biscrowns in the cone conformation
✍ Alexandre Mathieu; Zouhair Asfari; Jacques Vicens 📂 Article 📅 2002 🏛 Elsevier Science 🌐 French ⚖ 132 KB

Water-soluble 1,2;3,4-calix[4]arene-biscrowns ( 14)-( 18) have been synthesized in two or three steps via chlorosulfonation. Cs + -ligand interactions were studied in aqueous media by 1 H NMR.

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New methods to obtain 1,2-bridged calix[4]arene-biscrowns in the 1,2-alternate conformation are described. The stereochemistry of the proximal double functionalization reaction is mainly governed by the solvent, the length of the polyether units and the base used to deprotonate the calix[4]arene.