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Mass spectrometry of 3,4-dihydroquinazolin-4-ones of pharmaceutical interest. Part 3. Electron ionization mass spectra of 2-substituted-3-(5′-pyrazolyl)-4(3H)-quinazolinones

✍ Scribed by Mirella Ferrugia; Maria Luisa Bajardi; Leopoldo Ceraulo; Salvatore Plescia


Book ID
112130321
Publisher
Journal of Heterocyclic Chemistry
Year
1992
Tongue
English
Weight
192 KB
Volume
29
Category
Article
ISSN
0022-152X

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Electron impact ionization mass spectrometry indicates that the behavior of W-unsubstituted pyrirnidin-4-ones with CH2-R type substitution at C-2 differs from homologs that are N-substituted and/or 2-aryl- or 2-methyl-substituted. A dominant intramolecular cycliza-tion was found to occur between 3ZV