Quirke J M, Van Berkel G J
Department of Chemistry, Florida International University, Miami, Florida 33199, USA.
J Mass Spectrom. 2001 Dec;36(12):1294-300. doi: 10.1002/jms.233.
The fragmentation of 15 alkyl 1-methylpyridinium ether derivatives (D+) of primary and secondary alcohols, benzylic alcohols and phenyl-substituted alcohols was investigated using energy-resolved tandem mass spectrometry. Fragmentation pathways and mechanisms, including the influence of substituents, on the formation of the major product ions, which appear at m/z 110, [D - 109]+ and [D - 111]+, were postulated. Comparison of the abundances of these ions in the product ion spectra of isomeric alcohol derivatives, obtained at the same center-of-mass collision energy (2.0 eV), was found to provide the ability to differentiate among some isomers.
使用能量分辨串联质谱法研究了伯醇、仲醇、苄醇和苯基取代醇的15种烷基1-甲基吡啶鎓醚衍生物（D+）的碎裂情况。推测了碎裂途径和机制，包括取代基对主要产物离子（出现在m/z 110、[D - 109]+和[D - 111]+）形成的影响。发现在相同质心碰撞能量（2.0 eV）下获得的异构醇衍生物的产物离子谱中，比较这些离子的丰度能够区分一些异构体。
