Conclusions
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1.
Decomposition under the influence of electron impact of 2-organyl-1,2-azaborolines (I)–(XIII) occurs selectively, in the mass spectra an intense peak of the [M-R4]+ ion dominates, explained by the loss of the substituent from C3, the remaining ions usually do not exceed 10% of its intensity.
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2.
The boron-containing ring in the bicyclic compounds (III)–(XIII) is more stable to the influence of electron impact.
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3.
Fragmentation with rupture of the C-O bond in the alkyloxy group on the boron atom is characteristic for 2-alkoxy-1,2-azaborolines.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 3, pp. 587–593, March 1989.
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Bleshinskaya, A.S., Boldyreva, O.G., Zolotarev, B.M. et al. Organoboron compounds and mass spectrometric study of derivatives of 2-amino- and 2-oxy-1,2-azaboroline. Russ Chem Bull 38, 517–522 (1989). https://doi.org/10.1007/BF00958043
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DOI: https://doi.org/10.1007/BF00958043