Three related diketopiperazine derivatives (S)-1-benzyl-6-methylpiperazine-2,5-dione, (S)-1-benzyl-3-methylpiperazine-2,5-dione and (S)-6-methyl-1-(pentafluorobenzyl)piperazine-2,5-dione were prepared and employed as chiral solvating agents in NMR spectroscopy for determination of enantiomeric purity of N-aylamino acids.
COBISS.SI-ID: 29661189
New polysubstituted (1E,3E)-1-(benzoylamino-4-(dimethylamino)buta-1,3-diene-1,2,3-tricarboxilates, prepared by cycloaddition of acetylenedicarboxylates, were employed for the synthesis of polysubstituted pyridine, N-aminopyridine, pyrrole and pyridopyridazine derivatives.
COBISS.SI-ID: 29753605