The title cation abstracts hydride from aliphatic amines yielding the corresponding thiopyran: with methylamine some pyridinium cation is also found. With aniline, and its N- and ring-substituted and hetero-analogues, fair yields of novel thiopyrylium dyes are obtained.
B. J. Graphakos, A. R. Katritzky, G. Lhommet and K. Reynolds, J. Chem. Soc., Perkin Trans. 1, 1980, 1345 DOI: 10.1039/P19800001345
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