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Mass spectrometric studies of 2-aryl-5-acetylthiazole derivatives

✍ Scribed by Gianluca Giorgi; Laura Salvini; Orazio A. Attanasi; Barbara Guidi; Stefania Santeusanio

Publisher
John Wiley and Sons
Year
2002
Tongue
English
Weight
172 KB
Volume
37
Category
Article
ISSN
1076-5174

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✦ Synopsis

Abstract

Electron ionisation mass spectrometry was usefully used to characterize structurally 2‐aryl‐5‐acetylthiazole derivatives in the gas phase. The compounds show characteristic fragmentation pathways depending on the chemical nature of the substituent at position 2, consisting mainly in the cleavage of both the 1,2‐ and 3,4‐bonds of the thiazole ring. Liquid secondary ion mass spectrometry was applied to study the effects of protonation on the gas‐phase unimolecular reactions of this class of compound. Tandem mass spectrometric experiments, carried out on molecular and protonated molecular ions, and also on fragment ions produced in the source, allowed the elucidation of gas‐phase decompositions of low‐internal energy ions. Copyright © 2001 John Wiley & Sons, Ltd.

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