Synthesis and Characterisation of Phosphazene Derivatives Containing Dioxybiphenyl and 4-Sulfanylquinazoline Groups

Abstract

2,2-Dichloro-4,4,6,6-bis[spiro(2ʹ,2ʹʹ-dioxy-1ʹ,1ʹʹ-biphenylyl)]cyclotriphosphazene was synthesised from the reaction of hexachlorocyclotriphosphazene with biphenyl-2,2ʹ-diol. 2,2-Bis(4-formylphenoxy)-4,4,6,6-bis[spiro(2ʹ,2ʹʹ-dioxy-1ʹ,1ʹʹbiphenylyl)]cyclotriphosphazene was obtained from the reaction of 2,2-dichloro-4,4,6,6-bis[spiro(2ʹ,2ʹʹ-dioxy-1ʹ,1ʹʹ-biphenylyl)] cyclotriphosphazene with 4-hydroxybenzaldehyde. 2,2-Bis[4-(4-quinazolinone)phenoxy]-4,4,6,6-bis[spiro(2ʹ,2ʹʹ-dioxy-1ʹ,1ʹʹbiphenylyl)]cyclotriphosphazene was synthesised from the reaction of 2,2-bis(4-formylphenoxy)-4,4,6,6-bis[spiro(2ʹ,2ʹʹ-dioxy-1ʹ,1ʹʹ-biphenylyl)]cyclotriphosphazene with anthranilamide in N,N-dimethylformamide. The novel cyclophosphazene derivatives were synthesised under mild conditions from the reaction of 2,2-bis[4-(4-quinazolinone)phenoxy]-4,4,6,6-bis[spiro(2ʹ,2ʹʹdioxy-1ʹ,1ʹʹ-biphenylyl)]cyclotriphosphazene with 4-chlorobenzenemethanethiol, p-thiocresol, 4-aminothiophenol, and 4-chlorothiophenol in the presence of p-toluenesulfonyl chloride via C-OH bond activation under mild conditions. All products were generally obtained in high yields. Their structures were characterised by HRMS, IR and 1 H, 13 C spectroscopy.

Eu+3-doped chalcone substituted cyclotriphosphazenes: Synthesis, characterizations, thermal and dielectrical properties

“…In phosphazene chemistry, there are many strudies about adamantane, alkoxy-, amino-, thiol and aryloxy substituted phosphazenes [44][45][46][47][48]. However, there are only five articles on the synthesis and characterization of cyclotriphosphazenes containing chalcone compounds as side groups [6,[49][50][51][52].…”