Synthesis of Hexakis-(4-tetrazolylphenyloxy)cyclotriphosphazene and Its Alkylonitrile Derivative

Abstract

Tetrazoles were introduced into cyclotriphosphazenes to obtain hexakis-(4-tetrazolylphenyloxy)cyclotriphosphazene (2) in good yield (88.9%) by reacting hexakis-(4-cyanophenyloxy)cyclotriphosphazene (1) with sodium azide in N,N-dimethylformamide (DMF) in the presence of NH₄Cl as a catalyst. Its alkylonitrile derivative, hexakis-(4-cyanoethyltetrazolylphenyloxy)cyclotriphosphazene (3), was prepared by the reaction of 2 with acrylonitrile in acetonitrile, using triethylamine as a catalyst.

Keywords:

• Acrylonitrile
• cycloaddition
• hexachlorocyclotriphosphazene
• tetrazole

ACKNOWLEDGMENTS

We thank the National Science Foundation of China (50703013, 20374022) and Independent Innovative Position of Hubei Province for financial support.