Synthesis and Characterization of Tris[2,3-di(o-oxyphenylene)quinoxalin]cyclotriphosphazene--A Novel Spiroheterocyclophosphazene

Synthesis and characterization of chalcone-substituted phosphazenes

A series of mono[(E)-1-(4-alkyloxyphenyl)-3-(4-hydroxy-phenyl)prop-2-en-1-one]cyclotriphosphazenes and hexakis[(E)-1-(4-alkyloxy-phenyl)-3-(4-hydroxy-phenyl) prop-2-en-1-one]cylotriphosphazenes have been synthesized. A convenient synthetic method was performed from the reaction of hexachlorocyclotriphosphazenes with 1 and 6 equiv. of (E)-1-(4-alkyloxyphenyl)-3-(4-hydroxy-phenyl)prop-2-en-1-one (2a–2c) to afford (3a–3c) in 17%–19% and (4a–4c) in 70%–82%, respectively. The compounds differ in the length of alkyl groups, CnH2n+1, where n = 10, 12, and 14.