The synthesis of four chiral N,N'-substituted piperazines stereoselectively labelled with deuterium atoms is described. The preparation was accomplished by reduction of norephedrinederived bisoxazolidines with LiAID, or BD,*THF to afford 2,3-d2-piperazine and 2,3-dimethyl-2,3-d2-piperazine, while 2,2,3,3-d4and 2,2,3,3,5,6-d,-piperazine were obtained from a strategically deuterated hydroxyethylenediamine