Synthesis of 4-alkyl-substituted 1,2,3,4-tetrahydropyrimidin-2-ones by the Biginelli reaction
Abstract
p-Toluenesulfinic acid is an effective catalyst for condensation of acetoacetic ester with urea and aliphatic or aromatic aldehydes, leading to formation of 4-substituted 6-methyl-5-ethoxycarbonyl-1,2,3,4-tetrahydropyrimidin-2-ones.
How to Cite
Shutalev, A. D.; Sivova, N. V. Chem. Heterocycl. Compd. 1998, 34, 848. [Khim. Geterotsikl. Soedin. 1998, 34, 979.]
For this article in the English edition, see DOI https://doi.org/10.1007/BF02251695