Abstract
The reaction of 2-alkylthio-1,3-dithiolium salts with Meldrum's acid gave 1,3-dithiol-2-ylideneisopropylidene malonates, which were converted successively to monoethyl esters of 1,3-dithiol-2-ylidenemalonic acids and esters of 1,3-dithiol-2-ylideneacetic acid. 2-Methyl-1,3-dithiolium salts are formed when 1,3-dithiol-2-ylideneisopropylidene malonates are heated with acids.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 12, pp. 1621–1624, December, 1988.
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Kreitsberga, Y.N., Vilyuma, é.V., Khodorkovskii, V.Y. et al. Synthesis and transformations of 1,3-dithiol-2-ylideneisopropylidene malonates. Chem Heterocycl Compd 24, 1339–1342 (1988). https://doi.org/10.1007/BF00486675
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DOI: https://doi.org/10.1007/BF00486675