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    • 2. 发明公开
    • Preparation of a N-substituted phenylenediamine
    • Herstellung eine N-取代的苯基。
    • EP0446554A1
    • 1991-09-18
    • EP90630234.4
    • 1990-12-18
    • THE GOODYEAR TIRE & RUBBER COMPANY
    • Cottmann, Kirkwood Storer
    • C07C209/24C07C213/02C07C217/08C07C211/55
    • C07C209/24C07C249/02
    • The present invention relates to a process for the preparation of a N-substituted phenylenediamine of the formula:

      comprising reacting N-phenylquinoneimine of the formula:

      with a primary amine of the formula:



              R-NH₂   (III)

      ,

      wherein the molar ratio of II to III in the reaction mixture ranges from about 1:1 to 1:10; and wherein R is selected from the group of radicals consisting of alkyls having 1 to 20 carbon atoms, cycloalkyls having 6 to 8 carbon atoms and radicals of the structural formula:

      wherein R² may be the same or different and is independently selected from the group of radicals consisting of hydrogen and an alkyl having 1 carbon atom, R³ is selected from the group of radicals consisting of an alkyl having 1 to 12 carbon atoms and n is an integer of from 0 to 6. The present process is characterized by its excellent yields of high purity N-substituted phenylenediamines.
    • 本发明涉及制备下式的N-取代苯二胺的方法:包括使下式的N-苯基醌亚胺与下式的伯胺反应:式中:R-NH 2(III), 其中反应混合物中II与III的摩尔比为约1:1至1:10; 并且其中R选自具有1至20个碳原子的烷基,具有6至8个碳原子的环烷基和具有以下结构式的基团的基团:CHEM,其中R 2可以相同或不同,并且为 独立地选自氢和具有1个碳原子的烷基组成的基团,R 3选自由具有1至12个碳原子的烷基和n是0至6的整数组成的基团。 本发明方法的特征在于其高纯度N-取代苯二胺的优异产率。