Syntheses for preparing 1,4-diketopyrrolo [3,4-c]pyrroles
    4.
    发明授权
    Syntheses for preparing 1,4-diketopyrrolo [3,4-c]pyrroles 有权
    制备1,4-二酮吡咯并[3,4-c]吡咯的合成

    公开(公告)号:US06388093B1

    公开(公告)日:2002-05-14

    申请号:US09755566

    申请日:2001-01-05

    IPC分类号: C07D48706

    CPC分类号: C07D487/04 C09B57/004

    摘要: A synthesis for preparing asymmetrical 1,4-diketopyrrolo[3,4-c]pyrroles involving: (a) reacting a &bgr;-ketoamide with a strong base; (b) halogenating the same or a different &bgr;-ketoamide; (c) reacting the reaction products of step (a) and (b) to form a succinamide; and (d) heating the succinamide in the presence of a Lewis Acid. Symmetrical 1,4-diketopyrrolo [3,4-c]pyrroles are synthesized by oxidatively dimerizing the reaction product of step (b) to form a succinamide; and heating the succinamide in the presence of a Lewis Acid.

    摘要翻译: 制备不对称1,4-二酮吡咯并[3,4-c]吡咯的合成方法,其涉及:(a)使β-酮酰胺与强碱反应; (b)卤化相同或不同的β-酮酰胺; (c)使步骤(a)和(b)的反应产物反应形成琥珀酰胺; 和(d)在路易斯酸存在下加热琥珀酰胺。 通过将步骤(b)的反应产物氧化二聚形成琥珀酰胺合成对称的1,4-二酮吡咯并[3,4-c]吡咯; 并在路易斯酸存在下加热琥珀酰胺。