| 溴代乙酰乙酸乙酯电喷雾电离质谱研究 |
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| 引用本文： | 鞠志宇,郭迷景,杨亚娟.溴代乙酰乙酸乙酯电喷雾电离质谱研究[J].许昌学院学报,2014,33(5):70-73. |
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| 作者姓名： | 鞠志宇 郭迷景 杨亚娟 |
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| 作者单位： | 1. 许昌学院化学化工学院,河南许昌,461000
2. 濮阳市职业中等专业学校,河南濮阳,457000 |
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| 基金项目： | 河南省科技计划项目，河南省基础与前沿技术研究计划项目，河南省教育厅科学技术研究重点项目 |
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| 摘 要： | 以乙酰乙酸乙酯和液溴为原料,在不同条件下合成了4-溴乙酰乙酸乙酯和2-溴乙酰乙酸乙酯;通过电喷雾电离串联质谱仪（ESI-MS）检测结果发现：4-溴乙酰乙酸乙酯与2-溴乙酰乙酸乙酯的质谱裂解途径差异明显,首次阐述了它们的质谱裂解机理.该结果对于鉴别2和4位溴代乙酰乙酸乙酯具有重要的参考价值.
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| 关 键 词： | 溴代乙酰乙酸乙酯 电喷雾电离质谱 裂解 |
ESI-MS Characterization of Bromo Ethyl Acetoacetate |
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| JU Zhi-yu,GUO Mi-jing,YANG Ya-juan.ESI-MS Characterization of Bromo Ethyl Acetoacetate[J].Journal of Xuchang University,2014,33(5):70-73. |
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| Authors: | JU Zhi-yu GUO Mi-jing YANG Ya-juan |
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| Institution: | JU Zhi-yu;GUO Mi-jing;YANG Ya-juan;School of Chemistry and Chemical Engineering,Xuchang University;Puyang Vocational Secondary School; |
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| Abstract: | Ethyl 4-bromoacetoaeetate and ethyl bromoaeetoacetate are synthesized by ethyl aeetoacetate with Br2 under different conditions in this paper. The products are then characterized by electrospray ionization mass spectrometry（ESI- MS）. Fragmentation pathways of ethyl 4-bromoaeetoacetate is different from that of ethyl 2- bromoaeetoacetate, which is proposed for the first time and provides useful information for the study of an appraisal of 2- and 4- bromo ethyl acetoacetate. |
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| Keywords: | bromo ethyl aeetoaeetate ESI-MS fragmentation pathways |
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