Details

Autor(en) / Beteiligte

• García-Elías, José
• Ochoa-Terán, Adrián
• Yatsimirsky, Anatoli K
• Santacruz Ortega, Hisila
• Ochoa-Lara, Karen
• López-Martínez, Luis Miguel
• Castro-Riquelme, Christian L
• García, Ángel L
• Madrigal-Peralta, Domingo
• Labastida-Galván, Victoria
• Ordoñez, Mario

Titel

Synthesis and anion recognition studies of new oligomethylene bis(nitrophenylureylbenzamide) receptors

Ist Teil von

• RSC advances, 2019-11, Vol.9 (67), p.39147-39162

Ort / Verlag

England: Royal Society of Chemistry

Erscheinungsjahr

2019

Link zum Volltext

Quelle

Free E-Journal (出版社公開部分のみ）

Beschreibungen/Notizen

• A new series of oligomethylene bis(nitrophenylureylbenzamide) receptors were synthesized varying the relative position of the urea and amide groups ( ortho 4 and meta 8 ) and the length of the oligomethylene chain (C 2 to C 8 ). An anion recognition study was performed with TBAX salts (X = AcO − , BzO − , F − , H 2 PO 4 − , and HP 2 O 7 3− ) by UV-vis and 1 H NMR. The flexibility of these receptors allows a cooperative effect of both ureylbenzamide units in the receptors. Noteworthy, the ortho position favored the 1 : 1 stoichiometry in the complexes with the carboxylates. The formation of 2 : 1 receptor-anion complexes with both types of receptors 4 and 8 and with hydrogen pyrophosphate and high log  K values obtained were very significant in this work. The NMR studies evidenced the formation of supramolecular complexes, even in a competitive solvent, such as DMSO. Synthesis and supramolecular interaction of new oligomethylene bis(4-nitrophenylureylbenzamide) receptors with different anions.