气相中双取代苯在乙酰氯离子体系中的加合反应研究  

Studies on the Adduct Reaction of Disubstituted Benzene with Ion System of Acetyl Chloride in Gas Phase

作　　者：李智立 

机构地区：[1]山东非金属材料研究所,济南250031

出　　处：《质谱学报》2000年第2期35-43,共9页Journal of Chinese Mass Spectrometry Society

摘　　要：研究了 1 1组双取代苯在乙酰氯离子体系中的离子 -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。双取代苯异构体加合产物的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。The ion-molecule reactions of disubstituted benzene with ion system of acetyl chloride under chemical ionization condition were examined and the fragmentation reactions of the adduct ions formed by the ion-molecule reactions were studied by using collision-induced dissociation technique.It was found that the electron-releasing groups favored the adduct reactions and 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 orthobenzene diamine with acetyl ion was similar to the reductive alkylation reaction of amine in condensed phase.

关 键 词：双取代苯 离子-分子反应 乙酰氯离子 加合反应 

分 类 号：O625[理学—有机化学]