Electron Impact Mass Spectra of 3-Aryl-3-hydroxyl-2,2,4,4-tetramethylcyclobutanones and Related Compounds
作者:Shaw-Tao Lin、Wen-Chung Lin、Richard Yung-Ho Chao、Ching-Liang Huang
DOI:10.1002/jccs.200000123
日期:2000.8
The mass spectra of 3-aryl-3-hydroxyl-2,2,4,4-tetramethylcyclobutanones and their related compounds were studied. The arylcyclobutanones and their ketal forms demonstrate similar fragmentation patterns but with different observed common peaks, i.e., [M-70]+ and 114 amu, as the base peaks for compounds arylcyclobutanones and their ketal forms, respectively. 1-Aryl-2,2,4-trimethyl-1,3-pentadiones, obtained
对3-芳基-3-羟基-2,2,4,4-四甲基环丁酮及其相关化合物的质谱进行了研究。芳基环丁酮及其缩酮形式表现出相似的碎裂模式,但观察到的共同峰不同,即 [M-70]+ 和 114 amu,分别作为化合物芳基环丁酮及其缩酮形式的基峰。由环丁酮水解获得的 1-Aryl-2,2,4-trimethyl-1,3-pentadiones 的峰为 43 amu 或 [Ar-CO]+,具体取决于苯环上的取代基。这些化合物很好地说明了可能碎片的相对电离势如何控制观察到的质谱。