From Azides and Phosphorus m Compounds

Interesting products have also been obtained from the reactions of phenyl azide with the birdcage -type phosphorus(m) compounds P4(NMe)g and PgOg. The former substrate gave P4(NMe)6 (=NPh) [ = 1 or 4, e.g. structure (6)], and products with n = 2 or 3 were identified by P n.m.r. The 

The azide-induced oxidation of tervalent phosphorus incorporated in six-membered rings (9) is readily accomplished. Phosphazenyl-derivatives of penicillins (11) have also been obtained in this way. 

---

From Azides and Phosphorus(m) Compounds.—The reactions of aminophosphines, and of phosphites, with trimethylsilyl azide are not as simple as might be expected, in view of the formation of significant quantities of by-products, (11) and (12), which have been identified.21... 

From Azides and Phosphorus(m) Compounds.—The reactions of azides with phosphorus(iii) compounds continue to be an important general route to monophosphazenes ... 

---