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Structural characterization of acetylpyridinium–ethyl pyruvate adducts by electrospray ionization mass spectrometry
Author(s) -
Bartók Mihály,
Bartók Tibor,
Szöllősi György,
Felföldi Károly
Publication year - 2002
Publication title -
journal of mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.475
H-Index - 121
eISSN - 1096-9888
pISSN - 1076-5174
DOI - 10.1002/jms.359
Subject(s) - chemistry , adduct , electrospray ionization , mass spectrometry , pyridinium , acetic anhydride , pyridine , ethyl lactate , electrospray , medicinal chemistry , organic chemistry , chromatography , catalysis
The reactions of ethyl pyruvate with acetic anhydride and pyridine were studied by electrospray ionization mass spectrometry (ESI‐MS). Ethyl 2‐acetoxy‐2‐pyridiniumpropionate (1) ( m / z 238) resulting from the reaction of the acetylpyridinium cation with ethyl pyruvate, and the adduct of ethyl 2‐acetoxyacrylate with a pyridinium cation (2), bound together by non‐covalent interactions ( m / z 238), were identified by ESI‐MS for the first time. Structures 1 and 2 cannot be distinguished, probably because one may be converted into the other and vice versa. Copyright © 2002 John Wiley & Sons, Ltd.