Details

Autor(en) / Beteiligte

• Klejch, Tomáš
• Slaví ek, Jan
• Hude ek, Old ich
• Eigner, Václav
• Gutierrez, Natalia Andrea
• Cu ínová, Petra
• Lhoták, Pavel

Titel

Calix[4]arenes containing a ureido functionality on the lower rim as highly efficient receptors for anion recognitionElectronic supplementary information (ESI) available. CCDC 1471641. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c6nj01271j

Erscheinungsjahr

2016-08

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The introduction of nosyl moieties onto the lower rim of the calix[4]arene skeleton led to the formation of compounds immobilised in cone conformations. Subsequent reduction of the nitro group and reaction with aryl isocyanates enabled the construction of new calixarene-based ligands for anion recognition. As proven by NMR and UV/vis titration experiments, diaryl urea moieties with electron-withdrawing substituents on both sides represent very efficient tools for the complexation of selected anions (AcO − , BzO − , H 2 PO 4 − ) even in highly competitive solvents such as DMSO-d 6 . Calix[4]arenes bearing diaryl urea moieties with electron-withdrawing substituents on both sides can bind selected anions (AcO − , BzO − , H 2 PO 4 − ) even in highly competitive solvents such as DMSO-d 6 .