Calixarenes are one of the macrocyclic receptors known to date besides crown ethers,
cyclodextrins, cryptands, and cucurbiturils. 1Ā3 These are synthesized from the base …

This article presents a systematic review of the coordination chemistry of calix [4] arenes,
which have been functionalised at the lower rim and are in the cone conformation. Particular …

Chirality recognition of pharmaceutical products plays a significant part in asymmetric
synthesis, stereoselective catalysis, supramolecular chemistry, and the development of new …

An updated guide to the most current information available for determining how to use NMR
spectroscopy to differentiate chiral compounds Differentiation of Chiral Compounds Using …

The synthesis of the first calixarene-based chiral phase-transfer catalysts derived from
cinchona alkaloids has been achieved in two steps from p-tert-butylcalix [4] arene. The …

Bisurea calix [4] arenes 1 and 2 possessing l-amino acid moieties at the lower rim were
synthesized by reaction of the methyl esters of glycine, l-alanine, or l-isoleucine with the …

In this study the synthesis of novel chiral calix [4] azacrown derivatives has been reported.
The enantioselectivity of chiral receptors was investigated by using UV–vis spectroscopy. All …

Calixarenes, obtained in the condensation reaction of formaldehyde and p-substituted
phenols, are often referred to as the third generation of supramolecular receptors after crown …

Novel calix [4] arene Schiff bases bearing chiral substituents both on the upper and the
lower rims have been developed. These chiral receptors exhibit good chiral recognition …

A diastereomeric mixture of chiral 25-(1 S)-camphorsulfonyloxy-26-isopropoxycalix [4] arene
2a (de 15%) and 25-isopropoxy-26-((1 S)-10-camphorsulfonyl) calix [4] arene 2b has been …