General Papers ARKIVOC 2006 (ix) 17-25
Syntheses, structures and interactions of heterocalixarenes Subodh Kumar*, Dharam Paul, and Harjit Singh*
Department of Chemistry, Guru Nanak Dev University, Amritsar-143005, India E-mail: hars60@yahoo.com
Abstract
This account provides a summary of a chapter on Heterocalixarenes in Advances in Heterocyclic Chemistry. The parent article (2005AHC67) constitutes 116 references, 30 X-ray structures and 189 chemical structures about heterocalix[n]arenes possessing varied heterocycles viz. furan, thiophene, pyridine, imidazole, benzimidazole, indole, benzofuran, benz-1,3-oxazine, pyrimidine-2,4-dione, benzimidazol-2(1H)-one, quinazoline-1,4(1H,3H)-dione, etc.
Keywords: Heterocalixarenes, synthesis, X-ray structures, conformations, supramolecular interactions
Table of Contents
1. Introduction 2. Calix[n]furans and their hybrid systems 3. Calix[n]thiophenes 4. Calix[n]pyridines and related systems 5. Triazine based Heterocalixarenes 6. Cationic and Betaine Heterocalixarenes 7. Calix[n]indoles and calyx[n]benzofurans 8. Cyclic Urea-Based Heterocalixarenes 1. Introduction Molecular recognition involving multimolecular entities formed between chemical species of complementary topology through non-covalent interactions is a phenomenon at the core of biology and chemistry.1 To understand complex modes of recognition of biological receptors, investigations on structurally simpler models of synthetic receptors are an area of contemporary research activity. The calixarenes 1 – the third generation synthetic receptors, on modification by
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