Zur wecheslwirkung der amidfunktion mit dem β-C-atom bei zerfällen α,β-ungesättigter amid: Sauerstoff- odder stickstoff-attacke?

Investigation of ¹³C labelled crotonamide and analysis of the collisional activation spectra from sutitable reference compounds have shown that the radical elimination from the β-C-atom, caused by a neighbouring group interaction between the β-C-atom and the amide function, is essentially induced by a nitrogen attack and only to a minor extent by an attack of the carbonyl oxygen upon the β-C-atom. The resulting ion strucstures are discussed.