G. Karminskizamola et al., ELECTRON-IMPACT MASS-SPECTRA OF SOME 1-(2-FURYL)2-(2-BENZOTHIAZOLYL)ETHENES AND 1-(2-THIENYL)2-(2-BENZOTHIAZOLYL)ETHENES, Rapid communications in mass spectrometry, 9(14), 1995, pp. 1345-1348
The electron impact mass spectra of some 1-(2-furyl)- and 1-(2-thienyl
)-2-(2-benzothiazolyl) ethenes have been recorded and the identity of
various ions in the mass spectra established. The compounds examined (
1-10) exhibit two main fragmentation routes. On one hand, fragmentatio
n of the furan and thiophene nuclei and the formation of cyclopropenyl
ethyne cations with very significant abundance and on the other hand,
fragmentation of the benzothiazole nuclei on characteristic pathways.
Compounds 6-10 also show two additional fragmentation routes.