The effect of configuration of gas phase protonated ethenedicarboxylates on their low energy collision induced dissociation behaviour
作者： A. Weisz , A. Mandelbaum , J. Shabanowitz , D. F. Hunt
关键词: Protonation 、 Cis–trans isomerism 、 Spectral line 、 Chemistry 、 Collision-induced dissociation 、 Double bond 、 Stereospecificity 、 Mass spectrometry 、 Medicinal chemistry 、 Stereochemistry 、 Ion 、 Instrumentation (computer programming) 、 Molecular medicine 、 Biochemistry
摘要: Low energy collision induced dissociation (CID) spectra were measured by a triple stage quadrupole mass spectrometer for the [MH]+ ions of diethyl and dimethyl esters maleic, fumaric, citraconic mesaconic acids. A very high degree stereospecificity was observed geometrically isomeric esters. The cis give rise to abundant [MHEtOH]+ [MHEtOHC2H4]+ ions, while trans isomers exhibit [MHC2H4]+ [MH2 C2H4]+ ions. highly stereospecific processes indicate that double bond configuration is retained in protonated species under conditions experiment.
sci-hub.se 参考文章(3)
Alex. G. Harrison, R. Krisha Mohan Rao Kallury, Stereochemical applications of mass spectrometry. II—Chemical ionization mass spectra of isomeric dicarboxylic acids and derivatives Organic Mass Spectrometry. ,vol. 15, pp. 277- 283 ,(1980) , 10.1002/OMS.1210150603
H. M. Fales, G. W. A. Milne, R. S. Nicholson, Chemical ionization mass spectrometry of complex molecules. VIII. Esters of di- and tricarboxylic acids Analytical Chemistry. ,vol. 43, pp. 1785- 1789 ,(1971) , 10.1021/AC60307A004
Asher Mandelbaum, Stereochemical effects in mass spectrometry Mass Spectrometry Reviews. ,vol. 2, pp. 223- 284 ,(1983) , 10.1002/MAS.1280020203