An unprecedented ortho effect in mass spectrometric fragmentation of even-electron negative ions from hydroxyphenyl carbaldehydes and ketones
作者： Athula Attygalle , Josef Ruzicka , Deepu Varughese , Jafri Sayed
DOI: 10.1016/J.TETLET.2006.04.147
关键词: Dissociation (chemistry) 、 Formate 、 Fragmentation (mass spectrometry) 、 Acetophenone 、 Chemistry 、 Carboxylate 、 Mass spectrum 、 Photochemistry 、 Medicinal chemistry 、 Benzaldehyde 、 Propiophenone
摘要: A mass spectrometric peak for a carboxylate anion is observed in collision-induced dissociation (CID) spectra recorded from negative ions derived ortho isomers of hydroxyphenyl carbaldehydes and ketones. For example, CID 2-hydroxy derivatives benzaldehyde, acetophenone, propiophenone, isobutyrophenone, pivalophenone show peaks at m/z 45, 59, 73, 87, 101 the formate, acetate, propionate, isobutyrate, pivalate anions, respectively.
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