New phosphonic diamides and phosphinic amides of the 4,7,10-triaza-1 lambda
(5)-phosphabicyclo[5.3.0]decane and 4,7,10-triaza-1 lambda(5)-phosphabicycl
o[5. 5.0]dodecane structures were prepared from bicyclic phosphoric triamid
es via the lithiation-induced N-->C migration of phosphorus, followed by pr
oton or haloalkane quenching.