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Synthesis of 1,2-bridged calix[4]arene-biscrowns in the 1,2-alternate conformation

โœ Scribed by Arturo Arduini; Laura Domiano; Andrea Pochini; Andrea Secchi; Rocco Ungaro; Franco Ugozzoli; Oliver Struck; Willem Verboom; David N Reinhoudt

Publisher
Elsevier Science
Year
1997
Tongue
French
Weight
505 KB
Volume
53
Category
Article
ISSN
0040-4020

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โœฆ Synopsis

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.

๐Ÿ“œ SIMILAR VOLUMES

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
โœ Alexandre Mathieu; Zouhair Asfari; Jacques Vicens ๐Ÿ“‚ Article ๐Ÿ“… 2002 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 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.