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Mass spectral fragmentation pattern of 3-(2′-hydroxyethyl)quinolin-2(1H)-one and its derivatives

✍ Scribed by S. P. Rajendran; P. Shanmugam

Publisher
John Wiley and Sons
Year
1992
Tongue
English
Weight
422 KB
Volume
27
Category
Article
ISSN
1076-5174

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✦ Synopsis

Fragmentation patterns resulting from electron impact ionization of 3-(2'-hydroxyethyl)quinoIin-2(l~ne, three of its monosubstituted derivatives and four of its disubstituted derivatives were studied. The molecular ion of quinolinone-2ethanol undergoes initial fragmentation with the loss of OH, H,O, CO, THO, CH,O, CH,OH, CH,=CHOH and HCNO species. The [M -CHO]' ion is tentatively suggested to have been formed by the expulsion of H from the [M -CO] '' ion and the [M -CHOl' peak may be considered as diagnostic of a 2-quinolone-kthanol.

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