Co-host: The Chemical Society of Japan, The Society of Synthetic Organic Chemistry, Japan (Cooperation)
Metastable ion spectral data based upon electron ionized molecular ions for titled compounds (25 species) have been summarized measued by a double reversed geometry four sector tandem mass spectrometer focussed in single/double hydrogen transfer from &omega-phenylacyl group into (thio)lactam moiety by either deuterium labeling or carbonyl/thiocarbonyl functions.