Abstract 4-Substituted tetrahydro-3,6-pyridazinedione 3-hydrazones (2) (or their 3-hydrazino tautomers 3), useful intermediates in the synthesis of bicyclic pyridazine derivatives, were prepared in satisfactory yields in the reaction of the corresponding alkyl 3-substituted 3-cyanopropionates with hydrazine hydrate.
摘要 4-取代的四氢-3,6-
哒嗪二酮 3-腙 (2)(或它们的 3-
肼互变异构体 3)是合成双环
哒嗪衍
生物的有用中间体,在相应的烷基 3 反应中以令人满意的产率制备。用
水合
肼-取代的
3-氰基丙酸酯。