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- W2027727105 abstract "Die elektronenstoßinduzierten Zerfälle Schiffscher Basen des DMD (Diaminomaleinsäuredinitril) werden durch Cyclisierungsreaktionen der Aminogruppe des DMD-Restes mit der Azomethingruppierung beherrscht. Die innerhalb der Zerfallsprozesse gebildeten Imidazolsysteme werden durch MI- und CA- Spektren unter positiven und negativen Ionisierungsbedingungen sowie durch Vergleich des kinetic energy release unter Hinzuziehung von Modellionen bewiesen. Deuterierungsexperimente zeigen, daß die für Anile charakteristische HCN-Eliminierung nicht unter Angriff der Azomethingruppierung sondern ausschließlich über den DMD- Rest ablaüft. The electron impact mass spectra of azomethines formed from diaminodicyanoethene are characterized by the formation of cyclic products involving the amino group of the diaminodicyanoethene and the azomethine group. The ions are shown to have imidazole structures by analysis of the metastable transitions and collisional activation spectra of both positive and negative ions and the kinetic energy release and by comparing these with authentic model ions. The source of the HCN lost, which is a characteristic process, was shown by deuterium labelling to be diaminocyanomethane residue and not the azomethine group, in contrast to other anils." @default.
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- W2027727105 date "1978-07-01" @default.
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- W2027727105 title "Umlagerungen Schiffscher Basen" @default.
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- W2027727105 doi "https://doi.org/10.1002/oms.1210130702" @default.
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