Spectrométrie de masse de triazolides et de leurs produits de transformation par pyrolyse?蟥?clair sous vide

A Maquestiau, FBB Abdelouahab…

Index: Maquestiau, Andre; Abdelouahab, Fouad Bachir Ben; Flammang, Robert Bulletin des Societes Chimiques Belges, 1990 , vol. 99, p. 89 - 101

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Abstract

Abstract Besides the formation of acylium ions, the molecular ions of 1-acyl-1, 2, 4-triazoles substituted (R) at position 3 lose competitively ketene and carbon monoxide after electron impact ionization, but the ketene loss dominates largely if R is a strong electron-donating substituent. This supports the occurrence of an ion-molecule complex which incorporates a substituted triazole and ionized ketene before the decarbonylation (methylene transfer) or ...