REACTIONS OF 1,3-BUTANEDIOL WITH HEXACHLOROCYCLOTRIPHOSPHAZENE - UNUSUAL NON-EQUIVALENCE OF PHOSPHORUS NUCLEI IN THE SPIROCYCLIC PRODUCT N3P3CL4[OCH(CH3)CH2CH2]

The reaction of hexachlorocyclotriphosphazene, N3P3Cl6 (1), with 1,3-b utane-diol affords the tetrachloro derivative N3P3Cl4[OCH(CH3)(CH2)2O] (2). This product (2) and its derivative N3P3(NMe2)4[OCH(CH3)(CH2)2O] (3) possess spirocyclic structures. The phosphorus NMR spectrum of 2 is of the AMX type instead of the expected AB2 or AX2 types observed f or other spirocyclic products. The synthesis of 2 and 3 and their char acterization by proton and phosphorus NMR are discussed.