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    Processes for preparing dianthranilate compounds and diazopyridone colorants
    6.
    发明授权
    Processes for preparing dianthranilate compounds and diazopyridone colorants 失效
    制备二邻氨基苯甲酸酯化合物和重氮吡啶酮着色剂的方法

    公开(公告)号：US06576747B1

    公开(公告)日：2003-06-10

    申请号：US10185261

    申请日：2002-06-27

    申请人： Rina Carlini ,  James M. Duff ,  Stephen G. Robinson ,  George Liebermann ,  Roger E. Gaynor ,  Tania Pereira ,  Jeffrey H. Banning ,  James D. Mayo

    发明人： Rina Carlini ,  James M. Duff ,  Stephen G. Robinson ,  George Liebermann ,  Roger E. Gaynor ,  Tania Pereira ,  Jeffrey H. Banning ,  James D. Mayo

    IPC分类号： C09B35031

    CPC分类号： C09B35/031 ,  C07C227/18 ,  C07C227/22 ,  C07C229/56 ,  C07D213/85 ,  Y10S534/02

    摘要： Disclosed is a process for preparing dianthranilate compounds which comprises (a) admixing reactants as follows: (1) a diol of the formula R1(OH)2, wherein R1 is an alkylene group having at least about 20 carbon atoms, and wherein the —OH groups are primary or secondary, (2) isatoic anhydride, present in an amount of at least, about 2 moles of isatoic anhydride per every one mole of diol, (3) a catalyst which is 1,4-diazabicyclo [2.2.2]octane, N,N,N′,N′-tetramethylethylene diamine, or a mixture thereof, said catalyst being present in an amount of at least about 0.2 mole of catalyst per every one mole of diol, and (4) a solvent; and (b) heating the mixture thus formed to form a dianthranilate compound of the formula Also disclosed is a process for preparing diazopyridone colorants which comprises (I) preparing a dianthranilate compound by the aforementioned method, (II) reacting the dianthranilate compound with nitrosylsulfuric acid to form a diazonium salt, and (III) reacting the, diazonium salt with a pyridone compound to form a diazopyridone compound.

    摘要翻译： 公开了一种制备二氨基甲酸盐化合物的方法，其包括（a）如下混合反应物：（1）式R 1（OH）2的二醇，其中R 1是具有至少约20个碳原子的亚烷基， OH基团是伯或仲，（2）丙酸酐，每1摩尔二醇存在量至少约2摩尔丙烯酸酐，（3）作为1,4-二氮杂双环[2.2.2 ]辛烷，N，N，N'，N'-四甲基乙二胺或其混合物，所述催化剂的存在量为每一摩尔二醇至少约0.2摩尔催化剂，和（4）溶剂; 和（b）加热由此形成的混合物以形成下式的二邻氨基苯甲酸酯化合物。另外公开的是一种制备重氮吡啶酮着色剂的方法，其包括（I）通过上述方法制备二氨基甲酸酯化合物，（II）使二邻氨基苯甲酸酯化合物与亚硝酰基磺酸反应 形成重氮盐，和（III）使重氮盐与吡啶酮化合物反应形成二叠氮基吡啶酮化合物。