Abstract
1-Unsubstituted 4-aryl-3,5-diethoxycarbonyl-1,4-dihydropyridines in the presence of NaH form anions that react with alkyl halides, acid chlorides, and halo acid esters to form the corresponding 1-substituted derivatives of 1,4-dihydropyridine Hydrolysis of one or both ethoxycarbonyl groups in the 3 and 5 positions, as well as hydrolysis of ethyl 4-phenyl-3,5-diethoxycarbonyl-1,4-dihydropyridinyl-1-acetate, occur upon reaction with alkali, but 1,3,5-triethoxycarbonyl-4-phenyl-l,4-dihydropyridine gives the corresponding unsubstituted 1,4-dihydropyridine.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 8, pp. 1067–1071, August, 1982.
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Lusis, V.K., Dubur, G.Y. Synthesis and properties of 1-substituted derivatives of diethyl 4-aryl-1,4-dihydrcpyridine-3,5-dicarboxylic acid esters. Chem Heterocycl Compd 18, 813–818 (1982). https://doi.org/10.1007/BF00506585
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DOI: https://doi.org/10.1007/BF00506585