2a,4-二取代-2-邻苯二甲酰亚胺基-2,2a,3,4-四氢-1H-氮杂环丁烷并[2,1-d][1,5]苯并硫氮杂䓬-1-酮的电子轰击质谱研究
Electron impact mass spectral studies of 2a,4-disubstituted 2-phthalimido-2,2a,3,4-tetrahydro-1H-azeto[2,1-d][1, 5]benzothiazepin-1-ones.
作者信息
Xu J, Zuo G
机构信息
College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.
出版信息
Rapid Commun Mass Spectrom. 2000;14(24):2373-6. doi: 10.1002/1097-0231(20001230)14:24<2373::AID-RCM173>3.0.CO;2-Q.
The mass spectrometric behaviour of seven 2a,4-disubstituted 2-phthalimido-2,2a,3,4-tetrahydro-1H-azeto[2,1-d][1, 5]benzothiazepin-1-ones has been studied with the aid of mass-analyzed ion kinetic energy spectrometry and accurate mass measurements under electron impact ionization. All compounds show a tendency to eliminate a CO molecule, a phthalimido (PhthN) radical, or a phthalimide (PhthNH) molecule. All of the resulting fragment ions could further lose a propene or (substituted) styrene molecule. The molecular ions could also undergo a reverse [2 + 2] cycloaddition reaction.
借助质量分析离子动能谱法以及在电子轰击电离条件下的精确质量测量，对七种2a,4-二取代的2-邻苯二甲酰亚胺基-2,2a,3,4-四氢-1H-氮杂环丁烷并[2,1-d][1,5]苯并硫氮杂䓬-1-酮的质谱行为进行了研究。所有化合物都有消除一个CO分子、一个邻苯二甲酰亚胺基（PhthN）自由基或一个邻苯二甲酰亚胺（PhthNH）分子的倾向。所有生成的碎片离子都可能进一步失去一个丙烯或（取代的）苯乙烯分子。分子离子也可能发生逆向[2 + 2]环加成反应。
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