1.

(S)-N-Benzyl-3(6)-methylpiperazine-2,5-diones as chiral solvating agents for N-acylamino acid esters

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

2.

Transformations of (1E,3E)-1-(benzoylamino)-4-(dimethylamino)buta-1,3-diene-1,2,3-tricarboxylates into pyridine and pyrrole derivatives

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