Fragmentation and skeletal rearrangements of 2-arylylamino-5-aryl-1,3,4-oxadiazoles and their noncovalent complexes with cobalt cation and cyclodextrin studied by mass spectrometry
作者:Rafał Frański、Błażej Gierczyk、Grzegorz Schroeder
DOI:10.1002/jms.990
日期:2006.3
studied by electron ionization (EI) and electrospray ionization (ESI) as methods of ion generation. To explain the observed complex skeletal rearrangements, tandem mass spectrometry, accurate mass measurement and isotope labeling (compounds containing one 13C atom in oxadiazole ring) were used. Loss of CO, N2 and H atoms under EI conditions led to the formation of 9,10-dihydroacridine-type ions, loss of
通过电子电离(EI)和电喷雾电离(ESI)作为离子产生方法,研究了标题化合物的质谱裂解途径。为了解释观察到的复杂骨架重排,使用了串联质谱,准确的质量测量和同位素标记(恶二唑环中含有一个13 C原子的化合物)。在EI条件下损失CO,N2和H原子导致形成9,10-二氢ac啶型离子,在ESI条件下损失NH3产生4-苯基酞嗪酮型离子,在ESI条件下损失HNCO产生N-芳基氨基苯甲腈离子; 然而,该过程会受到在苯环上取代的基团的电子给体/吸电子性质的影响。ESI用于研究化合物与钴以及环糊精的配合物。