A novel podand based anion receptor bearing benzimidazole motifs as recognition sites was designed and synthesized by reaction of 1,7-bis(2'-methylbenzoate)-1,4,7-trioxaheptane and phenylenediamine. The binding properties of anionic guest...

New indolyl crown ethers were obtained from reaction of bis-indolyl podand with different aldehydes using Fe(HSO4)3 as catalyst. Spectral characterisations and optimised structures of isomers of these new cyclophane-type compounds are also presented....

Efficient reaction of bis-indolyl podand with different aldehydes using Fe(HSO4)3 as catalyst to afford the corresponding new indolyl crown ethers is described. The structures of three distinct isomers have been optimized using HyperChem geometry...