Conclusions
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1.
Under chemical ionization conditions, adamantane forms the ions M+. and [M-H]+, while 2,4-dehydroadamantane also gives protonated ([M + H]+) and alkylated ([M + Alk]+) ions.
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2.
Functional groups in the adamantane molecule undergo ready alkylation and protonation, and may be lost as the HX molecule. Protonation of the diazirine group results in the loss of a molecule of nitrogen. The diazirine group is protonated more readily than the hydroxyl group, but less readily than CN, CONH2, or COOCH3.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 9, pp. 2010–2016, September, 1987.
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Kadentsev, V.I., Chizhov, O.S., Kolotyrkina, N.G. et al. Behavior of adamantane and its functional derivatives on chemical ionization. Russ Chem Bull 36, 1862–1867 (1987). https://doi.org/10.1007/BF00958331
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DOI: https://doi.org/10.1007/BF00958331