Direct Pyridazine Ring Synthesis from<i>β</i>-Cyano Esters. A Facile Synthesis of the Derivatives of Tetrahydro-3,6-pyridazinedione 3-Hydrazone
作者:Jerzy Lange、Hanna Tondys、Wałgorzata Koberda、Małgorzata Gniewosz
DOI:10.1080/00397919308011225
日期:1993.5
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。