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Electron impact mass spectrometry of 1,3-disubstituted quinazoline-2,4(1H,3H)-diones

✍ Scribed by Hülya Akgün; Ulrich Hollstein

Publisher
John Wiley and Sons
Year
1990
Tongue
English
Weight
157 KB
Volume
25
Category
Article
ISSN
1076-5174

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## Abstract The mass spectra of eight pyrrolo[1,2‐__a__][1,3,5]triazie‐2,4(1__H__, 3__H__)‐diones have been examined. An unusual feature in the fragmentation of those compounds having a 7‐alkoxycarbonyl function, namely loss of the whole ester grouping with concomitant hydrogen rearrangement, is di

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## Abstract We report an analysis of the europium‐shifted n.m.r. spectrum of 3‐(2′,4′‐dimethylphenyl)‐1__H__,3__H__‐quinazoline‐2,4‐dione and the resonance assignment of most of its protons.