Synthesis and Properties of Novel Calix[4]Resorcinols Containing Phosphonium Substituents

Synthesis of Novel Phosphorus‐Containing calix[4]resorcinols Based on Polyphenols with Phosphonium Fragment

“…An interest in these compounds is caused by the features of their reactivity, high ability of organophosphorus fragments to complexation, opportunities for the design of new supramolecular and coordination systems, as well as the materials with unique properties. Recently, we have studied the acid-catalyzed condensation of new phosphonium-substituted acetals with resorcinol and its derivatives [7][8][9], and it was shown that the synthetic result of the studied reactions significantly depends on the structure of used phosphorus-containing reagents. Recently, we have studied the acid-catalyzed condensation of new phosphonium-substituted acetals with resorcinol and its derivatives [7][8][9], and it was shown that the synthetic result of the studied reactions significantly depends on the structure of used phosphorus-containing reagents.…”

“…In particular, the use of phosphonium derivatives of calixarenes as an active material of ion-selective membrane electrodes allows the achievement of high selectivity toward lipophilic anions, namely, SCN − , I − , and particularly ClO 4 − [6]. For example, the use of tributylphosphonium-substituted acetal in these reactions leads to calix [4]resorcinols containing four phosphonium fragments on the lower rim of macromolecule [7,9]. For example, the use of tributylphosphonium-substituted acetal in these reactions leads to calix [4]resorcinols containing four phosphonium fragments on the lower rim of macromolecule [7,9].…”

“…Recently, we have studied the acid-catalyzed condensation of new phosphonium-substituted acetals with resorcinol and its derivatives [7][8][9], and it was shown that the synthetic result of the studied reactions significantly depends on the structure of used phosphorus-containing reagents. The analogous reactions of phosphonium-substituted acetals having three bulky phenyl substituents at phosphorus atom are completed at the step of the formation of phosphonium salts that include 2,2 -diarylethyl fragment in a molecule [8,9]. The analogous reactions of phosphonium-substituted acetals having three bulky phenyl substituents at phosphorus atom are completed at the step of the formation of phosphonium salts that include 2,2 -diarylethyl fragment in a molecule [8,9].…”