Generation and dienophilic properties of 1??benzyl??1H??1, 2, 3??triazolo [4, 5??d] pyridazine??4, 7??dione

AB Theocharis, NE Alexandrou…

文献索引：Theocharis, A. B.; Alexandrou, N. E.; Terzis, A. Journal of Heterocyclic Chemistry, 1990 , vol. 27, # 6 p. 1741 - 1744

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被引用次数: 16

摘要

Abstract 1-Benzyl-5, 6-dihydro-1H, 2, 3-triazolo [4, 5-d] pyridazine-4, 7-dione (1) by oxidation with lead tetraacetate afforded the corresponding triazolopyridazine-4, 7-dione 2 as the intermediate, which was trapped with several dienes giving the hetero-Diels-Alder adducts 3 in good yields. The structure of the cycloadduct 3a was determined by X-ray analysis.