Facial one-pot synthesis of D3h symmetric bicyclocalix [2] arene [2] triazines and their layered comb self-assembly

Abstract EN

A number of D3h symmetric bicyclocalix [2] arene [2] triazine core compounds were synthesized via a general and good-yielding (43–48 % yield) facile protocol starting from cyanuric halides, phloroglucinol and K2CO3 under very mild reaction conditions.

These cage-like compounds are tolerante with different reaction conditions and can be derived with other functional groups in high yields.

The X-ray crystal structures show these compounds have slightly distorted D3h symmetric structures.

Due to the unique molecular topological structure, bicyclocalix [2] arene [2] triazine molecules form unique layered comb networks when hydrogen bond groups exist (such as CO2H, B (OH)2), which represent a new kind of building block unit for supramolecular architectures.