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Fragmentation D'azoles Sous L'impact Electronique. V—Isomerisation Du Benzimidazole Avant Degradation |
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| Authors: | A. Maquestiau Y. van Haverbeke R. Flammang M. C. Pardo J. Elguero |
| Abstract: | The mass spectrum of benzimidazole is investigated using deuterium and carbon-13 labelling. The [M – HCN]+· ion is the result of two competitive reaction. Isomerisation into a cyanoaniline structure which eliminates HCN from the amino group and also from the nitrile group (by an ortho effect) is confirmed by ions abundance ratios. Hydrogen scrambling does not occur to a significant extent in the ions under consideration. |
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