sodium alkoxide to give 2‐amino‐6‐alkoxy‐4‐arylpyridine‐3,5‐dicarbonitrile 4a–e instead of the reported pyrazolo[3,4‐b]pyridine‐5‐carbonitriles. The same products 4a–e were prepared via reaction of arylidenemalononitrile with sodium alkoxide in an appropriative alcohol. However, the new synthetic route for preparation of their positional isomer 4‐amino‐6‐alkoxy‐2‐arylpyridine‐3,5‐dicarbonitrile 7a–j has
在存在条件下,将5-甲基-2-4,2-二氢-3 H-
吡唑-3-酮和/或5-甲基-2-苯基-2,4-二氢-3 H-
吡唑-3-酮与芳基
丙二腈反应用醇
钠制得2-
氨基-6-烷氧基-4-芳基
吡啶-3,5-二甲腈4a-e,而不是已报道的
吡唑并[3,4- b ]
吡啶-5-腈。相同的产品4A-E中制备通过在专用的醇与醇
钠arylidenemalononitrile的反应。然而,对于制备的新合成路线其位置异构体的4-
氨基-6-烷氧基-2-芳基
吡啶-3,5-二腈7A-j中已实现通过 在相同条件下2-
氨基丙-1-烯-1,1,3-三碳腈与不同芳族醛的反应