Synthesis of 3-cyano-4-aryl-5-ethoxycarbonyl-6-methyl-3,4-dihydropyridine-2-thiones |
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Authors: | A. A. Krauze É. É. Liepin'sh Yu. É. Pelcher Z. A. Kalme I. V. Dipan G. Ya. Dubur |
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Affiliation: | (1) Institute of Organic Synthesis, Academy of Sciences of the Latvian SSR, Riga |
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Abstract: | The condensation of ethyl arylidenacetoacetate with cyanothioacetamide and of arylidenecyanothioacetamides with ethyl acetoacetate or of arylidenecyanothioacetamides with ethyl -aminocrotonate gave 3-cyano-4-aryl-5-ethoxycarbonyl-6-methyl-3,4-dihydropyridine-2-thiones. PMR spectroscopy showed that the 3-cyano-4-aryl-3,4-dihydropyridine-2-thiones are formed as a mixture of cis and trans isomers.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 1, pp. 95–102, January, 1985. |
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