Decarboxylation of carnitine and alpha-cyano-4-hydroxycinnamic acid under particle bombardment - École polytechnique Accéder directement au contenu
Article Dans Une Revue European Journal of Mass Spectrometry Année : 2000

Decarboxylation of carnitine and alpha-cyano-4-hydroxycinnamic acid under particle bombardment

Résumé

Protonated carnitine and alpha -cyano-4-hydroxycinnamic acid were formed by laser photon irradiation, by MeV-ion bombardment and by electrospray. The spontaneous fragmentations of protonated molecules formed upon particle bombardment are compared with the decompositions induced by low- and high-energy collisions of molecules protonated by electrospray, The determination of fragmentation mechanisms was achieved using labelled compounds and by means of ab initio calculations. The most prominent fragmentation of protonated molecules formed under particle bombardment is an unexpected loss of carbon dioxide. More classical processes dominate the decomposition induced by collisions of electrosprayed species: loss of trimethylamine and 4-hydroxybutyrolactone from protonated carnitine, loss of water from protonated cinnamic acid but no loss of CO2. Decarboxylation occurring before or concomitant with protonation is proposed to interpret these results.
Fichier non déposé

Dates et versions

hal-00922241 , version 1 (27-12-2013)

Identifiants

Citer

Sophie Bourcier, Yannick Hoppilliard. Decarboxylation of carnitine and alpha-cyano-4-hydroxycinnamic acid under particle bombardment. European Journal of Mass Spectrometry, 2000, 6 (2), pp.175-185. ⟨10.1255/ejms.337⟩. ⟨hal-00922241⟩
112 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More