Abstract
The reaction of glyoxylic acid with ethyl β-aminocrotonate or acetyl-acetone imine has given the corresponding derivatives of 1, 4-dihydro-isonicotinic acid and their water-soluble salts.
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Dubur, G.Y., Uldrikis, Y.R. Preparation of 3,5-diethoxycarbonyl-2,6-dimethyl-1,4-dihydro-isonicotinic acid and 3,5-diacetyl-2,6-dimethyl-1,4-dihydroisoni-cotinic acid and their salts. Chem Heterocycl Compd 5, 762–763 (1972). https://doi.org/10.1007/BF00475850
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DOI: https://doi.org/10.1007/BF00475850