Synthesis and chiral recognition properties of two novel chiral calix[4]arene tartaric ester derivatives

Coordination chemistry of calix[4]arene derivatives with lower rim functionalisation and their applications

“…In this paper, they report the synthesis and liquid-liquid extraction properties of the chiral calix [4](azoxa)crown-7 derivative towards metal cations. The chiral recognition properties are reported elsewhere [189]. The liquid-liquid extraction of metal picrates of the calix[4]crown-7 derivative showed it to be efficient and selective for Li(I) ions among the alkali metal ions and while it proved to be a good extractant for transition metal ions, it showed no selectivity towards these ions.…”

Enantiomeric recognition of amino acid derivatives by chiral schiff bases of calix[4]arene

“…9 In a previous study, 10 we reported the synthesis of the dialdehyde derivative of calix [4]arene tartaric ester derivative 1. Chiral Schiff base derivatives 2-4 were prepared by the condensation of 1 and the corresponding (S)-(À)-1-phenylethylamine, (R)-(À)-1-cyclohexylethylamine and (R)-(À)-2-heptylamine with yields of 72%, 75% and 84%, respectively.…”

25‐Propyloxy‐26,27‐dibenzoyloxy‐calix[4]arene as Precursor for the Synthesis of Inherently Chiral Calixarenes

“…Receptors based on such compounds can recognize and bind optical antipodes of chiral “guest”. They are promising as ligands for metallocomplex catalysts [6,7] and organocatalysts [8] in asymmetric synthesis, enantioselective sensors, [9–11] chiral stationary phases in chromatography, [12,13] chiral shift reagents for NMR studies, [14,15] etc. Therefore, the development of convenient and preparative methods for the synthesis of inherently chiral calix[4] is an urgent task of organic and supramolecular chemistry.…”