Abstract
The syntheses and mass spectra of 5,6-tetramethylenetetrahydro-1,3-oxazine-2-thione and its 4-mono- and 4,4-disubstituted analogs are reported. The primary decay processes under electron impact are loss of the 1,3-oxazine ring, formation of hydrocarbon ions, and rearrangement of the [M−C6H9]+ ion.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 12, pp. 1668–1672, December, 1989.
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Peretokin, A.V., Moskovkin, A.S., Miroshnichenko, I.V. et al. Synthesis and mass spectra of 4-mono- and 4,4-disubstituted 5,6-tetramethylenetetrahydro-1,3-oxazine-2-thiones. Chem Heterocycl Compd 25, 1390–1393 (1989). https://doi.org/10.1007/BF00473870
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DOI: https://doi.org/10.1007/BF00473870