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Electron impact mass spectra of 5,5-bis(carboethoxy)-1,3-dioxanes

✍ Scribed by Mihai Horn; Sorin Mager; Nicolae Palibroda; Monica Culea

Publisher: John Wiley and Sons
Year: 1991
Tongue: English
Weight: 255 KB
Volume: 26
Category: Article
ISSN: 1076-5174
DOI: 10.1002/oms.1210260707

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✦ Synopsis

Electron impact-induced fragmentations of 2-substituted 5,5-bis(carboethoxy)l,3-dioxanes were studied by exact mass measurements and metastable ion analysis. The substituent R on C(2) of the heterocyclic ring has little influence on the principal cleavage reactions. Elimination of CH,O/CO and C,H,O/C,H,/C,H,OH are common fragmentations for ions containing the 1,Mioxane moiety or the OC,H, group, respectively. The abundant ions at m/z 173 and 127 serve as structural probes for the class of compounds studied. Primary fragmentations implying the ester function are of little importance.

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