Induced Retro Diels-Alder Fragmentation of N-Aryl 4-H-5, 7a-epoxyisoindolines (CROSBI ID 116498)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Mintas, Mladen ; Klepo, Živko ; Jakopčić, Krešimir ; Klasinc, Leo
engleski
Induced Retro Diels-Alder Fragmentation of N-Aryl 4-H-5, 7a-epoxyisoindolines
The electron impact induced fragmentations of the C-5 unsubstituted and 5-methyl N-aryl-4-H-5, 7a-epoxyisoindolines (where aryl is phenyl, p-tolyl, p-methoxyphenyl, o-methoxyphenyl and p-chlorphenyl) were investigated. The fragmentations patterns deduced were supported by exact mass measurements of prominent ions and by deuterium labelling. The retro Diels-Alder fragmentation turned out to be a predominant process in all the compounds investigated. In the mass spectra of the 5-methyl N-aryl-4-H-5, 7a-epoxyisoindolines hydrogen migration preceding fragmentation occured. From the mass spectrum of the specifically deuturated compound it was concluded that the transferred hydrogen originates exclusively from the 5-methyl group.
N-aryl-4-H-5; 7a-epoxyisoindolines; the retro Diels-Alder fragmentation
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano