Mass spectrometric study of some 2,3-diaryl-1,3-thiazolidin-4-ones under electron impact

The mass spectral fragmentations of some 2,3-diaryl-1,3-thiazolidin-4-ones were established by comparing spectra and by using exact mass measurements. The major fragment ions were identified and their relative importances related to substituent effects and bond strengths. Good correlations were observed between the relative abundances of some of the breakdown products and the Hammett σ constants of substituents in the aromatic rings.