Heterocycles

Novel heterocyclic troponoids: Synthesis of pyridoimidazotropolones and related compounds by the reaction of 5-nitrosotropolone with several azines

O Sato, K Tsurumaki, S Tamaru, J Tsunetsugu

文献索引：Sato, Ohki; Tsurumaki, Kouichiro; Tamaru, Syunnichi; Tsunetsugu, Josuke Heterocycles, 2004 , vol. 62, p. 535 - 542

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被引用次数: 1

摘要

Résumé/Abstract Novel heterocyclic troponoids, such as pyridoimidazotropolones (3-4, 5- 11, 12-13, 14-15 and 16) were synthesized by the reaction of 5-nitrosotropolone (1) with azines as pyridine, m-and p-substituted pyridines, pyridazine, isoquinoline and phthalazine. Similarly, thiazol afforded 17. The reaction mechanism involves multi-step reactions; acetylation of 1, Michael addition of azines to nitrosotropolone acetate (2), cyclization and ...