Synthesis and mass spectral fragmentation patterns of some new heterocyclic bis‐carboxamides

Abstract

AbstractThe electron impact mass spectra of some newly synthesized heteropolycyclic bis‐carboxamides are discussed. The dominant peaks in all these spectra are formed by the cleavage of the CN bond on one side of the anilino group with the formation of a fragment ion C9H4OSCI+ m/z 195, as the base peak. Cleavage of the CN bond with charge retention on nitrogen leads to characteristic ions in some cases.