Synthesis of derivatives of a new heterocyclic system, 9-oxo-1,3,4-thiadiazolo[3,2-a]pyrido[3,2-e]pyrimidine |
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| Authors: | S. Sh. Shukurov M. A. Kukaniev M. I. Nasyrov |
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| Affiliation: | (1) V. I. Nikitin Institute of Chemistry, Academy of Sciences of the Republic of Tajikistan, 299 ul. Aini, 734063 Dushanbe, Tajikistan |
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| Abstract: | Reaction of 2-substituted 5-imino-7-oxo-1,3,4-thiadiazolo[3,2-a]pyrimidines with pentane-2,4-dione in polyphosphoric acid yields 9-oxo-1,3,4-thiadiazolo[3,2-a]pyrido[3,2-e]pyrimidines.Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 10, pp. 2037–2038, October, 1995.The authors are grateful to V. A. Dorokhov for the skilled preparation of the paper for publication. |
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| Keywords: | 5-imino-7-oxo-1,3,4-thiadiazolo[3,2-a]pyrimidine pentane-2,4-dione polyphosphoric acid cyclodehydration 9-oxo-1,3,4-thiadiazoio[3,2-a]pyrido[3,2-e]pyrimidines |
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