STUDIES ON THE MASS-SPECTRA OF POSITIONAL ISOMERS OF DODECENYL ACETATE

The mass spectra of Delta(2) to Delta(11)-isomers of dodecenyl acetate were studied using electron impact ionization, high-resolution data a nd mass-analysed ion kinetic energy spectrometry. The principal fragme ntation processes of the positional isomerism are dominated by the rad ical-site rearrangement, double-bond migration and charge transfer alo ng the carbon chain with the aid of rearrangements of hydrogen atoms. The ions studied of dodecenyl acetates isomerize to a mixture of rapid ly interconverting structures prior to fragmentation.