Chemistry of Heterocyclic Compounds p. 1241 - 1245 (1984)
Update date:2022-08-03
Topics:
Krauze, A. A.
Liepin'sh, E. E.
Kalme, Z. A.
Pelcher, Yu. E.
Dubur, G. Ya.
The condensation of benzylideneacetoacetic ester with cyanoacetamide in the presence of triethylamine yielded 3-carbamoyl-3,4-dihydropyridin-2-one, while the condensation of arylidenecyanoacetamides with β-aminocrotonic ester in acetic acid yielded 3-cyano-3,4-dihydropyridin-2-ones.It was established by NMR spectroscopy that 3-cyano-4-R-5-ethoxycarbonyl-6-methyl-3,4-dihydropyridin-2-ones exist in solutions in the form of a mixture of cis- and trans-stereosiomers in a 10:1 ratio.
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