Abstract
2-(2-Carbethoxy-1-amino-1-thio)ethylenepyradinium(isoqunolinium) ylids were obtained by the reaction of carbethoxycyanomethylpyridinium(isoquinolinium) ylids with hydrogen sulfide. In an alkaline medium they cyclize into 5-mercaptosubstituted imidazo[1,2-a]pyridines(isoquinolines). The structure of the latter compounds was confirmed by PMR and IR spectroscopy.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 12, pp. 1639–1643, December, 1989.
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Berseneva, V.S., Bakulev, V.A., Mokrushin, V.S. et al. Synthesis and properties of thiocarbamoylmethylpyridinium (isoquinolinium) ylids. Chem Heterocycl Compd 25, 1364–1368 (1989). https://doi.org/10.1007/BF00473865
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DOI: https://doi.org/10.1007/BF00473865