MASS-SPECTROMETRY AND LIQUID-CHROMATOGRAPHY - MASS-SPECTROMETRY OF ALPHA-AMINO BETA-NITROSTILBENES

(Z)-alpha-amino beta-nitrostilbenes are obtained by the reaction of ei ther ammonia or primary or secondary amines on (Z)-alpha, beta-dinitro stilbene (DNS). The fragmentometric study of these compounds by electr on impact and chemical ionization was carried out. The conditions in w hich it may be possible to determine the purity of these compounds wer e obtained by HPLC on reversed phase. However the resolution factor be tween DNS and benzyl- or phenyl-aminonitroenamine is not sufficient fo r UV detection; only liquid chromatography-mass spectra coupling with negative ionization enables the detection of the possible presence of DNS in these nitro enamino derivatives.