Stereostructure of condensed‐skeleton cis‐ and trans‐dihydro‐1,3‐thiazines and 1‐thia‐3‐azaspiroalkenes

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The stereostructures of some condensed‐skeleton cis‐ and trans‐dihydro‐1,3‐thiazines and 1‐thia‐2‐phenyl‐3‐azaspiro[4n + 1]alk‐2‐enes (n = 3–6) were established by 1H and 13C NMR spectroscopy. A comparative study indicated that the cis‐thiazines have greater conformational mobility than the corresponding oxazines, although the preferred conformer of the two types of cis compounds is the same, with the sulphur axial and the 4‐methylene group equatorial relative to the rings.

Original languageEnglish
Pages (from-to)597-602
Number of pages6
JournalMagnetic Resonance in Chemistry
Issue number9
Publication statusPublished - 1984


ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)

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