Synthesis and inclusion properties of C3-symmetric triazole derivatives based on hexahomotrioxacalix[3]arene

Abstract

A series of metal ion receptors cone-7,15,23-tri-tert-butyl-25,26,27-tris{[1H-(1-arylmethyl)(1,2,3-triazolyl)]-4-methoxy}hexahomotrioxacalix[3]arenes, cone-3–cone-5, have been synthesized from 7,15,23-tri-tert-butyl-25,26,27-tris(propargyloxy)hexahomotrioxacalix[3]arene 2via click chemistry. The complexation properties of the receptors cone-3–cone-5 toward the selected binding of heavy metal and transition metal ions have been evaluated. The structure of cone-3 was elucidated by single-crystal X-ray crystallography.