Abstract
The condensation of cyclohexylidenemalononitrile or cyclohexylidenecyanoacetic ester with thioamidoethyl(methyl)malonate in the presence of sodium ethylate gave 6-amino-3-carbethoxy-5-cyano-4-spirocyclohexane-1,2,3,4-tetrahydropyridine-2-thione and 3-carbethoxy(methoxy)-5-cyano-6-oxo-4-spirocyclohexanepiperidine-2-thiones which were used in the synthesis of the corresponding substituted 2-alkylthiotetrahydropyridines. 5-Carbethoxy-3-cyano-3-methyl-6-methylthio-4-spiro-cyclohexane-3,4-dihydropyridine-2(1H)-one was studied by X-ray crystallography.
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Dyachenko, A.D., Desenko, S.M., Dyachenko, V.D. et al. Synthesis, Structure, and Some Properties of Substituted 3-Carbethoxy(methoxy)-5-cyano-1,2,3,4-tetrahydrospirocyclohexane-4-pyridine-2-thiones. Chemistry of Heterocyclic Compounds 40, 1009–1016 (2004). https://doi.org/10.1023/B:COHC.0000046690.75207.9b
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DOI: https://doi.org/10.1023/B:COHC.0000046690.75207.9b