Abstract
IONIZATION by electron impact of toluene1,2 and some other compounds containing the benzyl group3 leads to the formation of tropylium ions, as Meyerson and Rylander have shown by isotopic labelling1 and comparison of the energy data as well as of the mass spectra2 of toluene and cycloheptatriene. The discovery of this rearrangement is of importance for the verification of basic conceptions on factors determining ion fragmentation (cf. ref. 4). In this connexion we should like to direct attention to the mass spectrum of spiro-(2,4)-cycloheptadiene-(1,3).
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HANUŠ, V. Isomerization to the Tropylium Ion Induced by Electron Impact and its Significance. Nature 184, 1796 (1959). https://doi.org/10.1038/1841796a0
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DOI: https://doi.org/10.1038/1841796a0
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