Oxime-phosphazenes containing dioxybiphenyl groups

2,2-Dichloro-4,4,6,6-bis[spiro(2′,2′′-dioxy-1′,1′′-biphenylyl]cyclotriphosphazene (2) was obtained from the reaction of hexachlorocyclotriphosphazene (1) with biphenyl-2,2′-diol. 2,2-Bis(4-formylphenoxy)-4,4,6,6-bis[spiro(2′,2′′-dioxy-1′,1′′-biphenylyl]cyclotriphosphazene (3) was synthesized from the reaction of 2 with 4-hydroxybenzaldehyde. The novel oxime-cyclophosphazene containing dioxybiphenyl groups (4) was synthesized from the reaction of 3 with hydroxylaminehydrochloride in pyridine. The reactions of this oxime-cyclophosphazene with propanoyl chloride, allyl bromide, acetyl chloride, methyl iodide, benzoyl chloride, 4-methoxybenzoyl chloride, benzenesulfonyl chloride, chloroacetyl chloride, ethyl bromide, benzyl chloride and 2-chlorobenzoyl chloride were studied. Disubstituted compounds were obtained from the reactions of 4 with propanoyl chloride, allyl bromide, acetyl chloride, methyl iodide, benzoyl chloride, 4-methoxybenzoyl chloride, chloroacetyl chloride, ethyl bromide, and 2-chlorobenzoyl chloride, however, the oxime groups on 4 rearranged to nitrile (11) in the reaction of 4 with benzenesulfonyl chloride. A monosubstituted compound was obtained from the reaction of 4 with benzyl chloride. All products were generally obtained in high yields. The structures of the compounds were defined by elemental analysis, IR, 1H, 13C and 31P NMR spectroscopy.