化学学报 ›› 2000, Vol. 58 ›› Issue (4): 432-437. 上一篇    下一篇

研究论文

气相中双取代苯在丙酮离子体系中的加合反应研究

李智立;刘淑莹   

  1. 山东非金属材料研究所;中国科学院长春应用化学研究所.长春(130022)
  • 发布日期:2000-04-15

Studies on the adduct reaction of disubstituted benzenes with ion system of acetone in gas pahse

Li Zhili;Liu Shuying   

  1. Changchun Inst Appl Chem., CAS.Changchun(130022)
  • Published:2000-04-15

研究了11双取代苯在丙酮离子体系中的离子-分子反应特性及加合离子的碎裂反应特性,发现推电子基有利于加合反应的发生而吸电子基不利于加合反应的发生。双取代异构体的加合产物相对强度可以反映出它们取代基的位置及其性质的差异。邻苯二胺与乙酰基离子形成的加合离子在碎裂反应过程中可以发生与液相中胺的还原烷基化反应相类似的碎裂反应。

关键词: 苯P, 丙酮, 加合反应, 碰撞诱导解离技术, 碎裂反应

Ion-molecule reactions of disbstituted benzene with ion system of acetone and deuterium-labelled acetone under chemical ionization conditions were examined and the fragmentation reactions of the adduct ions formed by the ion-molecule reactions were studied using collision- induced dissociation (CID) technique. It was found that the electron- releasing groups favored the adduct eactions, whereas the electron- withdrawing groups did not. The position and properties of substituted groups affected the relative abundance of the adduct ions. The fragmentation reaction of the adduct ion formed by ortho- phenylenediamine with acetyl ion was simlar to the reductive alkylation reaction of amine in condensed phase.

Key words: BENZENE P, ACETONE, FRAGMENTAION REACTION

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