Evidence for a racemisation reaction giving diastereoisomers in the aminolysis of a chiral tetra-aminocyclotriphosphazene

31P NMR spectroscopic investigations of the products of sequential aminolysis with pyrrolidine (YH) of racemic trans-1,3-bisdibenzylamino-1,3,5,5-tetrachlorocyclotriphosphazene provide diastereoisomeric evidence that a racemisation reaction occurs for formation of the penta-amino derivative and is also most likely in the formation of the hexa-amino derivative.