Reactivity of pyrazolo [4, 3??c][1, 2, 5] oxadiazin??3 (5H)??ones toward C??nucleophiles: Synthesis of pyrazolo [3, 4??b] pyrazines

P Giori, AC Veronese, T Poli…

文献索引：Giori; Veronese; Poli; et al. Journal of Heterocyclic Chemistry, 1986 , vol. 23, # 2 p. 585 - 588

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被引用次数: 9

摘要

Abstract The reaction of pyrazolo [4, 3-c][1, 2, 5] oxadiazin-3 (5H)-ones 1 with carbanions prepared in situ from compounds containing an activated methylene group afforded pyrazolo [3, 4-b] pyrazines 4–13 in good yields. The possible reaction mechanism is proposed and discussed.