Triflamides and triflates of six-membered heterocyclic amines

Reactions of secondary cyclic amines (piperidine, morpholine, thiomorpholine, 1lambda(6), 4-thiazinane-1,1-dione) with trifluoromethanesulfonic anhydride or with N-phenyltriflimide both in the presence and in the absence of a base (Et3N) result in formation of corresponding triflamides and triflates of the initial amines. The triflates and triflamides can be distinguished by their F-19 and N-15 NMR spectra and the presence in the IR spectra of salts of absorption bands in the region 3270-3000 cm(-1) lacking in the spectra of triflamides.