ABSTRACT
Reactions of hexachlorocyclotriphosphazene N3P3Cl6 (1) with 1,4-butane-(2) and 1,6-hexane-diols (3) in (1:1:2, 1:2:4, and 1:3:6) stoichiometries in THF solution at room temperature (r.t.) and under refluxing conditions yield a total of 15 products: two open chain, N3P3Cl5[O(CH2)nOH] (n = 4, 6) (4, 5), two mono-spiro, N3P3Cl4[O(CH2)nO] (n = 4, 6) (6, 7), two mono-ansa, N3P3Cl4[O(CH2)nO] (n = 4,6) (8, 9), two dispiro, N3P3Cl2[O(CH2)nO]2 (n = 4, 6) (10, 11), two spiro-ansa, N3P3Cl2[O(CH2)nO]2 (n = 4, 6) (12, 13), one tri-spiro, N3P3[O(CH2)4O]3 (14), two single-bridged, N3P3Cl5[O(CH2)nO]N3P3Cl5 (n = 4, 6) (15, 16), one double-bridged, N3P3Cl4[O(CH2)6O]2N3P3Cl4 (17), and one tri-bridged, N3P3Cl3[O(CH2)6O]3N3P3Cl3 (18) derivatives. Their structures have been elucidated by MS, 31P, and 1H NMR spectroscopy. The results obtained, based on the synthesis, characterization, product types, and the relative yields, are compared with those of previous studies on the reactions of 1 with 1,2-ethane-, 1,3-propane-, 1,4-butane-, 1,5-pentane-, and 1,6-hexane-diols.
Acknowledgments
We are grateful to Shin Nisso Co. Ltd. for gifts of hexachlorocyclotriphosphazene (1). We are indebted to the School of Pharmacy for mass spectrometric data obtained under the auspices of the University of London intercollegiate research services. The author would also like to thank Mr. Don Ship and Dr. H. G. Parkes for obtaining the NMR data. Finally, the author wishes to express gratitude to Prof. Dr. D. B. Davies for his financial support, helpful suggestions, and insight during his postdoctoral studies.