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化学学报
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化学学报 ›› 2001, Vol. 59 ›› Issue (9): 1471-1475. 上一篇    下一篇

研究论文

MS^n技术研究2-嘧啶氧基苯胺类衍生物的两个新的特征重排 裂解

陈国强;郭寅龙;崔虎;吕龙   

  1. 中国科学院上海有机化学研究所.上海(200032)
  • 发布日期:2001-09-15

Study on two novel characteristic rearrangements and degradation patterns of six derivatives of 2-pyrimidinoxal aniline by MS^n technology

Chen Guoqiang;Guo Yinlong;Cui Hu;Lu Long   

  1. Shanghai Inst Organ Chem., CAS.Shanghai(200032)
  • Published:2001-09-15

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报道了六个2-嘧啶氧基苯胺类衍生物的质谱，并利用离子阱质谱MS^n技术研究了其裂解机理，发现了这类化合物两个复杂的、独特的重排裂解规律，即通过胺基氢基苄基氢向嘧啶环上的氮转移，再发生氢迁移，脱掉羟基自由基得到基峰。另外，给出了高分辨质谱数据，以对化合物c乙酰化物的相关MS图谱加以证实。

关键词: 嘧啶P, 苯胺P, 重排反应, 裂解, 离子肼, 除草活性, 质谱法

The mass spectra of six derivatives of 2-pyrimidinoxal aniline were reported. The characteristics and operational principles of the ion trap MS were introduced. The fragmentation pathways were studied using the ion trap MS^n technology. It has been found that there exist two complex but characteristic rearrangements and fragmentation patterns for these compounds. The base peaks of all the derivatives were [M-17]^+. And they all yielded the peak of [M-17-90] ^+. In addition, they had the same fragments such as m/z: 246 and so on. HRMS of compound c and the MS of the acetylation product of compound c proved the fragmentation pathways.

Key words: PYRIMIDINE P, BENZAMINE P, REARRANGEMENT REACTION, PYROLYSIS, MASS SPECTROGRAPHY

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