Abstract
A method has been developed for the preparation of 2-R-substituted 3-amino-6,6-dimethyl-5,6-dihydro-8H-pyrano[4'3':4,5]thieno[2,3-d]pyrimidin-4-ones based on 2-R-amino-3-ethoxycarbonylpyrano[2,3-c]thiophenes. It has been established that their cyclization with hydrazine hydrate requires vigorous conditions.
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REFERENCES
A. Sh. Oganisyan, G. O. Grigoryan, and A. S. Noravyan. Khim. Geterotsikl. Soedin., 1116 (2001).
A. P. Mkrtchyan, S. G. Kazaryan, A. S. Noravyan, S. A. Vartanyan, I. A. Dzhagatspanyan, N. E. Akopyan, and I. M. Nazaryan. Khim.-farm. Zh., 451 (1984).
A. P. Mkrtchyan, S. G. Kazaryan, A. S. Noravyan, R. A. Akopyan, I. A. Dzhagatspanyan, N. E. Akopyan, and A. G. Akopyan. Khim.-farm. Zh., 1321 (1986).
A. P. Mkrtchyan, S. G. Kazaryan, A. S. Noravyan, R. A. Akopyan, I. A. Dzhagatspanyan, N. E. Akopyan, and A. G. Akopyan. Khim.-farm. Zh., 557 (1985).
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Mkrtchyan, A.P., Noravyan, A.S. & Petrosyan, V.M. Derivatives of Condensed Thieno[2,3-d]pyrimidines. 15. Synthesis of 2-Substituted 3-Amino-6,6-dimethyl-5,6-dihydro-8H-pyrano[4'3':4,5]thieno[2,3-d]pyrimidin-4-ones. Chemistry of Heterocyclic Compounds 38, 238–241 (2002). https://doi.org/10.1023/A:1015355729220
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DOI: https://doi.org/10.1023/A:1015355729220