摘要
Electron impact induced fragmentation mechanisms of trans α aryl β enamino esters were investigated using mass analyzed ion kinetic energy (MIKE) spectrometry and high resolution accurate mass data. It was found that the main characteristic fragmentations of compounds studied were: an odd electron ion M +· -EtOH was formed by losing a neutral molecule of ethanol; and the skeletal rearrangements took place; and the ring opening reaction happened after losing a carbon monoxide; and the typical McLafferty rearrangement underwent in ester group. The cyclization reaction caused by losing neutral molecule of TsNH 2 due to the ortho effects of substituted group of aromatic ring was also observed.
Electron impact induced fragmentation mechanisms of trans α aryl β enamino esters were investigated using mass analyzed ion kinetic energy (MIKE) spectrometry and high resolution accurate mass data. It was found that the main characteristic fragmentations of compounds studied were: an odd electron ion M +· -EtOH was formed by losing a neutral molecule of ethanol; and the skeletal rearrangements took place; and the ring opening reaction happened after losing a carbon monoxide; and the typical McLafferty rearrangement underwent in ester group. The cyclization reaction caused by losing neutral molecule of TsNH 2 due to the ortho effects of substituted group of aromatic ring was also observed.
基金
ProjectsupportedbytheNationalNaturalScienceFoundationofChina (Nos.2 9972 0 0 2and 2 0 0 75 0 0 2 ) .
