Preparation of n-phenylbenzoquinone-imine and converting same into
p-phenylenediamines
    1.
    发明授权
    Preparation of n-phenylbenzoquinone-imine and converting same into p-phenylenediamines 失效
    制备N-苯基苯醌 - 并将其转化为对苯二甲酸

    公开(公告)号:US5189218A

    公开(公告)日:1993-02-23

    申请号:US668637

    申请日:1991-03-13

    CPC分类号: C07C209/52 C07C249/02

    摘要: N-phenylbenzoquinone-imine is prepared by oxidizing N-(4-hydroxyphenyl)aniline in a liquid, at least partially organic reaction medium, in the presence of a basic compound and, advantageously, a catalytically effective amount of at least one manganese, copper, cobalt and/or nickel compound; this imine can be reacted with an aliphatic or cycloaliphatic amine to produce an N-phenyl-N'-cycloalkyl-para-phenylene-diamine and an N-phenyl-N'-cycloalkyl-2,5-cyclohexadiene-1,4-diimine, such 1,4-diimine itself being easily reduced to the corresponding p-phenylenediamine.

    摘要翻译: 通过在碱性化合物存在下,在液体,至少部分有机反应介质中氧化N-(4-羟基苯基)苯胺,有利地,催化有效量的至少一种锰,铜 ,钴和/或镍化合物; 该亚胺可与脂族或脂环族胺反应,生成N-苯基-N'-环烷基 - 对 - 亚苯基二胺和N-苯基-N'-环烷基-2,5-环己二烯-1,4-二亚胺 ,这种1,4-二亚胺本身容易还原成相应的对苯二胺。

    Esterification of hydroxybenzoic acids
    5.
    发明授权
    Esterification of hydroxybenzoic acids 失效
    羟基苯甲酸酯化

    公开(公告)号:US5260475A

    公开(公告)日:1993-11-09

    申请号:US719467

    申请日:1991-06-24

    IPC分类号: C07C67/11 C07C313/00 C07C9/02

    CPC分类号: C07C67/11

    摘要: The hydroxybenzoic acids, e.g., salicylic acid and parahydroxybenzoic acid, are esterified by reacting same with a halocarbon, advantageously a halogenated derivative of an aliphatic, cycloaliphatic, cyclo- or arylaliphatic hydrocarbon, in essentially homogeneous liquid phase and in the presence of a nonquaternizable tertiary amine.

    摘要翻译: 羟基苯甲酸例如水杨酸和对羟基苯甲酸通过与卤代烃有利地酯化,有利地是在基本上均匀的液相中并且在非共价叔碳酸酯存在下的脂族,脂环族,环 - 或芳基脂族烃的卤代衍生物 胺。

    Cosmetic composition including leucodopachrome derivative
    10.
    发明授权
    Cosmetic composition including leucodopachrome derivative 失效
    化妆品组合物,包括leucodopachrome衍生物

    公开(公告)号:US08703107B2

    公开(公告)日:2014-04-22

    申请号:US13496654

    申请日:2010-09-06

    IPC分类号: A61K8/49 A61Q19/02 C07D209/42

    CPC分类号: C07D209/42

    摘要: A cosmetic or dermatological composition contains, in a physiologically acceptable medium, at least one compound from Formula (I). A method of using the composition, for reducing or preventing pigmenting, and/or whitening and/or lightening of the skin is described, as well as novel compounds from Formula (I′) that are included in Formula (I).

    摘要翻译: 化妆品或皮肤病学组合物在生理学上可接受的培养基中含有至少一种式(I)化合物。 描述了使用该组合物用于减少或防止着色和/或增白和/或减轻皮肤的方法,以及式(I)所包括的式(I')的新化合物。