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Characterization of acetals by means of capillary gas chromatography/mass spectrometry
Author(s) -
De La Ruelle Hugo,
Klok Jaap,
Rinken Marian,
Felix Mark
Publication year - 1995
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/rcm.1290091509
Subject(s) - chemistry , electron ionization , chemical ionization , fragmentation (computing) , mass spectrum , mass spectrometry , chromatography , analytical chemistry (journal) , direct electron ionization liquid chromatography–mass spectrometry interface , ionization , gas chromatography , yield (engineering) , ion , organic chemistry , materials science , computer science , metallurgy , operating system
i ‐Butylvinylether and diethyleneglycol‐ n ‐butyl ether (Dowanol‐DB Trade name of The Dow Chemical Company. ) were reacted under mild acidic conditions to yield acetals. This report deals with the identification of the reaction products by means of gas chromatographic separation followed by mass spectrometric analysis in both electron impact and chemical ionization modes. Consultation of the standard NIST library (50k spectra) revealed that none of the spectra of the acetals in this study were present. A more elaborate study of fragmentation patterns was therefore initiated. The fragmentation patterns of the reaction products in electron impact ionization mode are discussed in detail. During ammonia chemical ionization, typical [M+NH 4 +26] + ions are observed for 4,6‐dioxa‐2,5,8‐trimethylnonane. A hypothesis for this phenomenon is presented.