6533b7dcfe1ef96bd1271780

RESEARCH PRODUCT

Characterization of isomeric 1,2,4-oxadiazolyl-N-methylpyridinium salts by electrospray ionization tandem mass spectrometry.

Andrea PaceDavid BongiornoGiuseppe AvelloneSerena IndelicatoSilvestre BuscemiLeopoldo CerauloIvana PibiriNicolò Vivona

subject

Models MolecularSpectrometry Mass Electrospray IonizationProtein mass spectrometry020209 energyElectrospray ionizationIonic Liquids02 engineering and technologyTandem mass spectrometrySample preparation in mass spectrometrychemistry.chemical_compoundIsomerismESI-MS ionic kiquids oxadiazolylpyridiniumComputational chemistry0202 electrical engineering electronic engineering information engineeringDirect electron ionization liquid chromatography–mass spectrometry interfaceSpectroscopyChromatographySelected reaction monitoringExtractive electrospray ionizationGeneral MedicineAtomic and Molecular Physics and OpticschemistryModels ChemicalSpectrometry Mass Matrix-Assisted Laser Desorption-IonizationIonic liquidSalts

description

The mass spectrometric behavior of 1,2,4-oxadiazolyl- N-methylpyridinium salts has been investigated. These substances are of current interest as perspective ionic liquids, compounds used as green solvents for synthesis, and for their catalytic properties. The studies have been developed through electrospray ionization tandem mass spectrometry (ESI-MS/MS) experiments. The obtained results demonstrate a ready distinction between the two isomeric classes, 3- N-methylpyridinium- and 5- N-methylpyridinium-1,2,4-oxadiazoles, is possible through ESI-MS/MS experiments. A deeper investigation on the principal fragmentation pathways of characteristic ions has been also developed.

yearjournalcountryeditionlanguage
2007-06-01European journal of mass spectrometry (Chichester, England)
10.1255/ejms.877https://pubmed.ncbi.nlm.nih.gov/17881787