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学科主题: 分析化学
题名: ESI-FTICRMS Characterization of the Intermediates in Cycloisomerization of Trifluoromethyl-substituted Enynols through Changing the Protecting Group of Substrate
其他题名: ESI-FTICRMS法研究含不同保护基的三氟甲基取代烯炔醇环异构化中间体
作者: Qian R(钱荣) ; Guo YL(郭寅龙) ; Lv L(吕龙)
通讯作者: 郭寅龙
刊名: Chin. J. Chem.
发表日期: 2009
卷: 27, 期:1, 页:123-129
收录类别: SCI
部门归属: 上海硅酸盐所; 上海有机所
英文摘要: A chemical method of changing the protecting group was coupled to MS, deuterium-labeled and NMR methods to characterize the intermediates in the palladium(II)-catalyzed cycloisomerization of trifluoromethyl-substituted enynols. It was demonstrated that the method of changing the protecting group of substrates not only caused a decrease in reaction speed, but also provided long-lived reaction intermediates detectable by conventional spectroscopic techniques. In this sense, two assumed reaction intermediates were intercepted and detected by electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry (ESI-FTICRMS). For further characterization of these intermediates, the gas-phase behavior of these intermediates was studied by sustained off-resonance irradiation collision-activated dissociation (SORI-CAD) experiments. On the basis of the detailed, spectral interpretation of the palladium-containing species, the fragmentation pathways of the intermediates have been proposed. The deuterium-labeled experiment helped confirm the nature of the intermediates.
语种: 英语
相关网址: 查看原文
WOS记录号: WOS:000264039400021
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内容类型: 期刊论文
URI标识: http://ir.sioc.ac.cn/handle/331003/19990
Appears in Collections:分析化学研究室_期刊论文

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Recommended Citation:
Qian R,Guo YL,Lv L. ESI-FTICRMS Characterization of the Intermediates in Cycloisomerization of Trifluoromethyl-substituted Enynols through Changing the Protecting Group of Substrate[J]. Chin. J. Chem.,2009,27(1):123-129.
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