Unexpected matrix interactions in liquid secondary ion mass spectrometry of two pyranosyl mercaptans


A. Castellan, Université Bordeaux 1, Unité Sciences du Bois et des Biopolymères, UMR 5103, 351 cours de la Libération, 33405 Talence Cedex, France.

E-mail: a.castellan@us2b.u-bordeaux1.fr


An unexpected interaction with a thioglycerol matrix appeared in the liquid secondary ion mass spectrometry (LSIMS) spectra of two pyranosyl mercaptans [2,3,4,6-tetra-O-acetyl-1-thio-β-D-glucopyranose (1a) and 2,3,4,6-tetra-O-acetyl-1,5-dithio-β-D-glucopyranose (1b)] often used to prepare glucosinolates, important thiosaccharidic metabolites found in all plants of the order Brassicales. The reactions, probably occurring in the solvent cage, seem to involve radical mechanisms. Copyright © 2011 John Wiley & Sons, Ltd.