19060-55-0Relevant academic research and scientific papers
Comparative Mass Spectral Study of 2-Aza and 2'-Azabenzanilides and Their Thio Anlogues
Ramana, D. V.,Krishna, N. V. S. Rama
, p. 517 - 521 (2007/10/02)
Intramolecular aromatic substitution reactions involving nitrogen of the pyridine ring and sulfur have been observed in 2-aza- and 2'-azathiobenzanilides under electron impact while expelling the hydrogen or the ortho substituent from the molecular ions of these compounds.Hydrogen migration from nitrogen to the sulfur leads to the + ion while the migration of aryl group to sulfur affords +.Interesting ortho interactions of methoxy and the methyl substituents have also been noticed in 2-methoxy-2'-azathiobenzanilide and 2'-methyl-2-azathiobenzanilide in enhancing the relative abundance of +.But the mass spectra of the corresponding oxygen analogues contain peaks chiefly due to simple cleavages resulting in abundant benzoyl cations.
