Conclusions
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1.
Chemical ionization mass spectra (isobutane) of the positive ions of N-trifluoroacetylamines are characterized by intense peaks of molecular ions and also ions that are typical for the electron impact mass spectra.
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2.
With chemical ionization (reagent gas isobutane or helium) of N-trifluoroacetylamines, low-stability [M + F]− anions are formed. Specific for the primary amines are the anions [M-H]− and [M-alkyl]−. For the derivatives of secondary amines, the anions [M-alkyl]−, [M-alkane]−, and [M-alkyl s-alkene]−; for the derivatives of cyclic amines, the anions [M-H]− and ions formed as a result of ring cleavage.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 7, pp. 1526–1530, July, 1989.
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Zaikin, V.G., Ivanov, A.V., Kliger, G.A. et al. Reaction chromatography/mass spectrometry. 16. Chemical ionization mass spectra of certain N-trifluoroacetylamines. Russ Chem Bull 38, 1394–1398 (1989). https://doi.org/10.1007/BF00978425
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DOI: https://doi.org/10.1007/BF00978425