Reactivity of pyrazolo[4,3-<i>c</i>][1,2,5]oxadiazin-3(5<i>H</i>)-ones toward<i>C</i>-nucleophiles: Synthesis of pyrazolo[3,4-<i>b</i>]pyrazines
作者:P. Giori、A. C. Veronese、T. Poli、C. B. Vicentini、M. Manfrini、M. Guarneri
DOI:10.1002/jhet.5570230255
日期:1986.3
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.
吡唑并[4,3- c ] [1,2,5]恶二嗪-3(5 H)-ones 1与由含活化亚甲基的化合物原位制备的碳负离子反应,得到吡唑并[3,4- b ]吡嗪4–13,丰产。提出并讨论了可能的反应机理。