| 一类2(1H)-喹喔啉化合物的裂解机理 |
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| 引用本文： | 杨小兵,丁松涛,王安邦,李小银,杨裕生,胡伟华. 一类2(1H)-喹喔啉化合物的裂解机理[J]. 分析测试学报, 2002, 21(6): 28-30 |
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| 作者姓名： | 杨小兵 丁松涛 王安邦 李小银 杨裕生 胡伟华 |
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| 作者单位： | 1. 防化研究院第一研究所,北京,100083
2. 中国科学院化学研究所北京质谱中心,北京,100080 |
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| 摘 要： | 用电子轰击质谱（EI-MS）研究了一类喹喔啉化合物；1-烷基-3-甲基-2（1H）-喹喔啉-2-酮（1-alkyl-3-methyl-2(1H)-quinoxalin-2-one，简称AMQ，其中alky1=H,CH3，C2H5，n-C3H7，n-C5H11；结果表明随着烷基链的增长，样品熔点通常会有所降低，结合在电子轰击下所产生的裂解碎片离子，并根据其结构特征为乙基化样品为代表，推导了该类化合物在电子轰击作用下可能发生的裂解机理。
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| 关 键 词： | 2（1H）－喹喔啉化合物 电子轰击质谱 取代基 熔点 裂解机理 |
| 文章编号： | 1004-4957(2002)06-0028-03 |
| 修稿时间： | 2001-12-01 |
Fragmentation Mechanism for A Group of 2(1H)-Quinoxalines |
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| YANG Xiao - bing,DING Song - tao,WANG An - bang,LI Xiao - yin,YANG Yu - sheng,HU Wei - hua. Fragmentation Mechanism for A Group of 2(1H)-Quinoxalines[J]. Journal of Instrumental Analysis, 2002, 21(6): 28-30 |
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| Authors: | YANG Xiao - bing DING Song - tao WANG An - bang LI Xiao - yin YANG Yu - sheng HU Wei - hua |
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| Affiliation: | YANG Xiao - bing1,DING Song - tao1,WANG An - bang1,LI Xiao - yin1,YANG Yu - sheng1,HU Wei - hua2 |
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| Abstract: | A group of 2(1H) - quinoxalin - 2 - ones: 1 - alkyl - 3 - methyl - 2(1H) - quinoxalin - 2 - one(AMQ, alkyl=H, CH3, C2H5, n - C3H7, n - C5H11, n - C16H33)has been researched by electron impact mass spectrometry(EI - MS). The effects of different substituting alkyls on melting point were evaluated. Results show that as the length of the alkyl chain at the nitrogen on the 1 - position increases, the melting point of the compounds usually decreases. Based on the analysis of fragments appeared in EI mass spectrum, as well as the structure feature of these compounds, the fragmentation mechanism of 1 - ethyl - 3 - methyl - 2(1H) - quinoxalin - 2 - one, as an example, was proposed. |
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| Keywords: | Electron impact mass spectrometry Quinoxaline Substituents Melting point Fragmentation mechanism |
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