Abstract
Reaction of 2-pyridine aldehyde or its methiodide in methanol solution in the presence of piperidine with rhodanine or 3-alkylrhodanines leads to crotenoid condensation and formation of 2-pyridinylidene-5-rhodanine and 2-pyridinylidene-5-(3-alkyl) rhodanines and their monomethiodides.
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Lugovkin, B.P. Reaction of 2-pyridine aldehyde with rhodanines. Chem Heterocycl Compd 1, 589–591 (1966). https://doi.org/10.1007/BF00472696
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DOI: https://doi.org/10.1007/BF00472696