Process for the preparation of naphthalene-1,8-dicarboximides
    3.
    发明授权
    Process for the preparation of naphthalene-1,8-dicarboximides 失效
    萘-1,8-二羧酰亚胺的制备方法

    公开(公告)号:US4892950A

    公开(公告)日:1990-01-09

    申请号:US204468

    申请日:1988-06-09

    IPC分类号: C07D221/14

    CPC分类号: C07D221/14

    摘要: Process for the preparation of naphthalene-1,8-dicarboximide which is optionally substituted in the naphthalene ring, characterized in that naphthalene-1,8-dicarboxylic anhydride which is optionally substituted in the naphthalene ring is reacted with an ammonium salt in an aqueous medium at a pH near to the neutral point, the reaction mixture is then acidified to a pH of 1 to 4 and the pH is subsequently adjusted to a value near to the neutral point.

    摘要翻译: 在萘环中任选取代的萘-1,8-二羧酰亚胺的制备方法,其特征在于在萘环中任选取代的萘-1,8-二羧酸酐与含水介质中的铵盐反应 在接近中性点的pH下,将反应混合物酸化至1至4的pH,随后将pH调节至接近中性点的值。