✦ LIBER ✦

Synthesis and mass spectra of 4-mono- and 4,4-disubstituted 5,6-tetramethylenetetrahydro-1,3-oxazine-2-thiones

✍ Scribed by A. V. Peretokin; A. S. Moskovkin; I. V. Miroshnichenko; M. Ya. Botnikov; Yu. F. Malina; B. V. Unkovskii

Book ID: 104781639
Publisher: Springer US
Year: 1989
Tongue: English
Weight: 326 KB
Volume: 25
Category: Article
ISSN: 0009-3122
DOI: 10.1007/bf00473870

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✦ Synopsis

The syntheses and mass spectra of 5,6-tetramethylenetetrahydro-l,3-oxazine-2thione 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.

The present work is a continuation of earlier studies on the synthesis and decay under electron impact of substituted tetrahydro-l,3-oxazine-2-thiones [i-3]. We have now synthesized and examined the mass spectra of bicyclic analogs of these compounds, 5,6-tetramethylenetetrahydro-l,3-oxazine-2-thione(I) [4] and the previously unknown 4-mono-and 4,4-disubstituted 5,6-tetramethylenetetrahydro-l,3-oxazine-2-thiones (II-VI).

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