Abstract
The reactions of ethyl 3-amino-4-carbamoyl-5-methylthiophene-2-carboxylate with 1,3-dicarbonyl compounds were studied. During the reactions, the corresponding ketone is eliminated to give ethyl 5-methyl-4-oxo-3,4-dihydrothieno[3,4-d]pyrimidine-7-carboxylates.
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Ryndina, S.A., Kadushkin, A.V., Solov"eva, N.P. et al. Synthesis of thieno[3,4-d]pyrimidines by the reactions of 3-amino-4-carbamoylthiophene derivatives with 1,3-dicarbonyl compounds. Russian Chemical Bulletin 51, 1879–1885 (2002). https://doi.org/10.1023/A:1021356603146
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DOI: https://doi.org/10.1023/A:1021356603146