The Synthesis of 7-Substituted-2,3-dihydropyrido [4,3-d]pyridazine-1,4-diones and 1,4-Dioxo-7-substituted- 1,2,3,4-tetrahydropyrido[4,3-d]pyridazine 6-Oxides from Methyl Ketones
作者:Benjamin Prek、Branko Stanovnik
DOI:10.17344/acsi.2017.3695
日期:2017.12.15
5-dicarboxylates and their N-oxides and final cyclization with hydrazine hydrate into of 7-substituted-2,3-dihydropyrido[3,4-d]pyridazine-1,4-diones and 1,4-dioxo-7-substituted-1,2,3,4-tetrahydropyrido[4,3-d]pyridazine 6-oxides is shown.
经由3-(二甲氨基)-1-取代-丙-2-烯-1-酮的烷基,环烷基,芳基和杂芳基甲基酮的一般四步转化,然后通过微波[2 + 2]环化加成乙炔二羧酸二甲酯氨或盐酸羟胺将(2E,3E)-2-[((二甲氨基)亚甲基] -3-(2-取代)琥珀酸酯环化成2-取代吡啶-4,5-二羧酸酯及其N-氧化物和最终与水合肼环合成7-取代的2,3-二氢吡啶并[3,4-d]哒嗪-1,4-二酮和1,4-二氧-7取代的1,2,3,4-四氢吡啶并[显示了4,3-d]哒嗪6-氧化物。