Studies of phosphazenes. Part 10. Spirocyclic derivatives of cyclotriphosphazatrienes

Abstract

The reactions of hexachlorocyclotriphosphazatriene, N₃P₃Cl₆, and its geminal bis-t-butylamino- and diphenyl derivatives, with ethylenediamine and ethanolamine are reported. In each case, both chlorine atoms attached to the same phosphorus atoms are replaced, giving rise to spirocyclic derivatives. A small quantity of a bis spirocyclic derivative, N₃P₃(NHCH₂CH₂O)₂Cl₂, is also obtained; this compound occurs in both cis and trans forms. Attempts to prepare fully substituted tris spirocyclic derivatives have been unsuccessful and only resinous materials were obtained. The ¹H and ³¹P n.m.r. spectra of the products are discussed.