Tetrahedron

Photochemistry—xiii: The photokomerization of pyridazine 1, 2-dioxides: formation of 3a, 6a-dihydroisoxazolo [5, 4-d] isoxazole

A Ohsawa, H Arai, H Igeta, T Akimoto, A Tsuji, Y Iitaka

文献索引：Ohsawa,A. et al. Tetrahedron, 1979 , vol. 35, p. 1267 - 1271

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被引用次数: 5

摘要

Products, generated from a photolysis of 1, 2-dioxides (1) of unsubstituted (a), 3-Me-(b), 4- Me-(c), 3, 6-diMe (d), 3-Ph-(e), 3-Me-6-Ph-(f) and 3, 6-diPh-(g) pyridazines, have been investigated. Dioxides (1a–g) afforded 3a, 6a-dihydroisoxazolo [5, 4-d] isoxazoles (2a-g). Dioxides (1e and 1g) afforded 3-phenylisoxazole (7) besides 2. The structure of 2a was examined by X-ray crystallography. The compound 2d was also obtained by oxidation of ...