SYNTHESIS AND CHARACTERIZATION OF BIDENTATE CYCLOTRIPHOSPHAZENE DERIVATIVES

Abstract Three novel cyclotriphosphazene derivatives were designed. Title compounds were synthesized by the reaction of the dichlorocyclotriphosphazene derivative [N3P3Cl2(O2C12H8)2] with the potassium salt of 4-hydroxybenzaldehyde, and subsequent reduction of aldehyde groups to alcohol groups using sodium borohydride. The bromination reaction was carried out using PBr3 to give N3P3(O2C12H8)2 (OC6H4-p-CH2Br)2. This compound was employed in reactions with macrocyclic polyamide, imidazole, or morpholine to produce title compounds. The target compounds were characterized using 1H NMR, 31P NMR, 13C NMR, IR, and electrospray ionization mass spectra (ESI-MS). [Supplemental materials are available for this article. Go to the publisher's online edition of Phosphorus, Sulfur, and Silicon and the Related Elements for the following free supplemental resource: Figures S1–S6.] GRAPHICAL ABSTRACT