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一种新型的质谱特征裂解方式──八元环过渡态氢重排β-裂解

A New Type of Mass Spectrometrical Characteristic Fragmentation Pattern-Eight Membered Ring Tran -sition State Hydrogen Rearrangment β-Cleavage
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摘要 经多年的观察和研究,发现一种新的质谱特征裂解方式是存在的,其化学结构特征是必须具有1,2—和5,6—双键以及可转移的7位氢原子。裂解如下:由结构特征而言,这是有机质谱的第六种特征裂解方式,我们称其为八元环过渡态氢重排β-裂解(已有的五种是α-裂解,苄基裂解,烯丙裂解,麦氏重排裂解和RDA裂解),其实用价值和裂解强度高于烯丙裂解,近于麦氏重排裂解和RDA裂解。这种新的质谱特征裂解方式得到了Thomas及其同事的氘标记实验的证实。 篈 new type of mass spectrometrical characteristic fragmentation pattern has beenfound based on our observation and researches for years and used for fragmentation interpretation of a bigger kind of organic compounds in which there must be 1, 2 and 5, 6-double bonds and a transferable 7-hydrogen atom as the structural characteristics. Thefragmentation pattern has been inferred as follows:and the fragmentation pattern can be called eight membered ring transition state hydrogen rearrangement β-cleavage. This should be the sixth characteristic fragmentationpattern in organic mass spectromctry on chcmistry structurcs (the other five are α-cleavage, benzyl cleavage, allylic cleavage, Mclafferty rearrangement cleavage and RDA cleavage) and the worthiness for practical purpose and the fragmentation intensity would behigher than those of the allylic cleavage and close to McLafferty rearrangement cleavageand RDA cleavage. The new fragmentation pattern has been proved by Thomas and his colleagues,deuterium label experiments
作者 丛浦珠
机构地区 中国医学科学院
出处 《质谱学报》 EI CAS CSCD 1998年第2期5-15,共11页 Journal of Chinese Mass Spectrometry Society
关键词 八元环 过渡态 氢重排 裂解 质谱特征裂解 eight membered ring transition state hydrogen rearrangement β-cleavage
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参考文献2

  • 1丛浦珠,质谱学在天然有机化学中的应用,1987年,378,380页
  • 2丛浦珠,药学学报,1984年,19卷,450页
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