ELECTRON-IMPACT MASS-SPECTRA OF PARASUBSTITUTED N-HETEROARYL BENZYLAMINES

The 70 eV electron impact mass spectra of some para-substituted N-hete roaryl benzylamines, synthesized through the corresponding Schiff base s, are reported. Typical fragmentation patterns are discussed with the aid of mass analyzed ion kinetic energy spectra and exact mass measur ements. The compounds are relatively stable under electron impact, the molecular ion being the base peak or the second most intense ion in t he spectra. The dominating breakdown process is the benzylic cleavage, that gives rise to the base peak in some of the investigated compound s and to the second intense peak in others.