Studies of Phosphazenes. Part 13. Thermal Rearrangement Reactions of Some Methoxycyclophosphazenes

DOI: 10.1039/DT9810001928

Source and publish data:

Journal of the Chemical Society, Dalton Transactions p. 1928 - 1934 (1981)

Update date:2022-08-16

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Authors:

Dhathathreyan, K. S.

Krishnamurthy, S. S.

Murthy, A. R. Vasudeva

Shaw, Robert A.

Woods, Michael

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Article abstract of DOI:10.1039/DT9810001928

The methoxycyclophosphazenes n (n = 3-6) rearrange on heating to give oxocyclophosphazanes, n.Isomeric products are formed when n = 4-6.The 1H, 31P, and 13C n.m.r. data for the starting materials and the products are presented.The ethoxy- and n-propoxy-derivatives N3P3(OR)6 do not undergo the above rearrangement.The geminal derivatives N3P3R2(OMe)4 (R = Ph or NHBu^t) on heating yield both fully and partially rearranged products, namely dioxaphosphaz-1-enes and oxophosphazadienes, as shown by 270-MHz 1H n.m.r. spectroscopy.The non-geminal derivative N3P3(NMe2)2(OMe)4 gives only the fully rearranged product N3Me3P3(NMe2)2O3(OMe), whose structure has been established from its 1H and 31P n.m.r. spectra.

Full text of DOI:10.1039/DT9810001928

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