Intramolecular aromatic substitution and amino-claisen rearrangement in substituted N-(2-propynyl)anilines on electron impact

Article abstract of DOI:10.1002/jms.1190300713

N-(2-Propynyl)anilines undergo amino-Claisen rearrangement to a minor extent in the ion source, losing a molecule of HCN under electron impact conditions. However, metastable molecular ions with energies closer to threshold undergo Claisen rearrangement g