Synthesis and properties of bowl-shaped homotriazacalix[3 and 6] arenes and the acyclic analogues
作者:Kazuaki Ito、Tomokazu Sato、Yoshihiro Ohba
DOI:10.1002/jhet.5570400110
日期:2003.1
Bowl-shaped chiral homotriazacalixarenes were prepared by the cyclization reactions of chiral triamines with three equimolar amounts of bis(chloromethyl) phenols or bis(chloromethyl) phenol-formaldehyde dimers in moderate yields. The corresponding acyclic phenol-formaldehyde oligomers were also synthesized. The structural analysis of the macrocycles by nmr and circular dichroism spectra imply the existence