高等学校化学学报 ›› 1997, Vol. 18 ›› Issue (5): 795.

• 论文 • 上一篇    下一篇

一些双官能团苯基醚化合物的离子/中性复合物中间体质谱碎裂

佘益民1, 刘淑莹1, 杨明生2   

  1. 1. 中国科学院长春应用化学研究所, 长春, 130022;
    2. 湖南师范大学实验中心, 长沙, 410006
  • 收稿日期:1996-05-30 出版日期:1997-05-24 发布日期:1997-05-24
  • 通讯作者: 刘淑莹
  • 作者简介:佘益民, 男, 31岁, 博士研究生.
  • 基金资助:

    国家自然科学基金

Fragmentations of Some Bifunctional Phenylether Compounds by Intermediate Ion/Neutral Complexes

SHE Yi-Min1, LIU Shu-Ying1, YANG Ming-Sheng2   

  1. 1. Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022;
    2. Experimental Center, Hunan Normal University, Changsha, 410006
  • Received:1996-05-30 Online:1997-05-24 Published:1997-05-24

摘要: 报道了3种含双官能团苯基醚化合物2-(2,6-二氯苯氧基)丙睛、N-羟基-4-丁氧基苯乙酰胺、2-(1-甲基乙氧基)苯酚甲氨基甲酸酯的电子轰击质谱碎裂.用亚稳分析和低能碰撞诱导解离研究了3种化合物的分子离子碎裂规律,除简单的直接键断裂外,还证实经历了离子/中性(碎片)复合物中间体的单分子解离反应同时存在的竞争机理,解释了观察到的分子内单氢迁移、双氢迁移现象.

关键词: 离子/中性(碎片)复合物, 2-(2, 6-二氯苯氧基)丙腈, N-羟基-4-丁氧基苯乙酰胺, 2-(1-甲基乙氧基)苯酚甲氨基甲酸酯, 质谱碎裂

Abstract: The fragmentations of three bifunctional phenylether compounds including 2-(2,6-dichlolo)phenoxyl propionitrile, N-hydroxyl-4-butoxyl phenylacetyl amine (bufexamc) and 2-(1-methylethoxyl) phenol methylcarbamate (Propoxur) under electron impact ionization were reported.Metastable ion(MI) and collision-induced dissociation(CID) at a low energyhave been used to study the fragmentation pathways from molecular ions.Apart from the simple bond cleavages, and the unimolecular dissociations viaion/neutral complex intermediate as a competitive mechanism were demonstrated-Moreover, the intramolecular hydrogen transfer and double hydrogen transfers in the fragmentations of these compounds were discussed in detail.

Key words: Ion/neutral complexes, 2-(2,6-Dichloro) phenoxyl propionitrile, N-hydroxyl-4-butoxyl phenylacetylamine, 2-(1-Methylethoxyl) phenol methylcarbamate, Fragmentation of mass spectra

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