Mass spectrometric investigation of substituted 1,3-emthiolane S-oxides

The electron impact mass spectrometry of four model 2-phenyl-2-alkyl-l,3-dithiolane S-oxides is described and discussed with the aid of B/E mass-analysed ion kinetic energy collisional spectroscopy and labelling experiments, as well as of fast atom bombardment spectra. The mechanisms of the common fragmentation patterns are given.