Mass Spectrometric Studies of Some New Thiazole Derivatives

Abstract

The mass spectra of three new series of thiazole derivatives, II, IV, V, were examined. The first compounds were new spiro[1:2]cycloadduct compounds which were given by the reaction of thiazolium ylids and alkylisothiocyanates, the next compounds also have the same nucleus but have a group, C=NH instead of one of C=S groups. The final compounds were derived from the first compounds by heating in acetic acid solution. The fragmentation mechanisms were discussed with the aid of high resolution measurements and deuterium labelling.