Chlorination of nitrophenols
    5.
    发明授权
    Chlorination of nitrophenols 失效
    硝基酚的氯化

    公开(公告)号:US4827047A

    公开(公告)日:1989-05-02

    申请号:US164894

    申请日:1988-03-07

    CPC分类号: C07C201/12

    摘要: The chloronitrophenols, e.g., 2,6-dichloro-4-nitrophenol (a known agrochemical/pharmaceutical intermediate), are efficiently prepared by chlorinating ortho- or para-nitrophenol with gaseous chlorine, characteristically in the molten state, and in the presence of a catalytically effective amount of a primary, secondary or tertiary amine.

    摘要翻译: 氯代苯酚,例如2,6-二氯-4-硝基苯酚(已知的农用化学品/药物中间体)通过用气态氯氯化邻苯二甲酸或对硝基苯酚而有效地制备,特征为熔融状态,并且在 催化有效量的伯,仲或叔胺。

    Cosmetic composition including leucodopachrome derivative
    9.
    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。

    Process for functionalising a phenolic compound carrying an electron-donating group
    10.
    发明申请
    Process for functionalising a phenolic compound carrying an electron-donating group 审中-公开
    功能化携带电子给予基团的酚类化合物的方法

    公开(公告)号:US20070049773A1

    公开(公告)日:2007-03-01

    申请号:US11592930

    申请日:2006-11-03

    IPC分类号: C07C39/24 C07C39/34 C07C45/90

    摘要: The invention concerns a method for functionalizing a phenolic compound bearing an electron-donor group, in said group para position, inter alia a method for the amidoalkylation of a phenolic compound bearing an electron-donor group, and more particularly, a phenolic compound bearing an electron-donor group preferably, in the hydroxyl group ortho position. The method for functionalizing in para position with respect to an electron-donor group carried by a phenolic compound is characterised in that the phenolic compound bearing an electron-donor group is subjected to the following steps: a first step which consists of protecting the hydroxyl group in the form of a sulphonic ester function; a second step which consists in reacting the protected phenolic compound with an electrophilic reagent; optionally, a third step deprotecting the hydroxyl group.

    摘要翻译: 本发明涉及一种用于官能化带有电子给体基团的酚类化合物的方法,尤其是具有电子给体基团的酚类化合物的酰胺基烷基化方法,更具体地说,涉及带有 电子给体基团优选在羟基邻位。 相对于由酚类化合物携带的电子给体基团在对位官能化的方法的特征在于具有电子给体基团的酚类化合物经受以下步骤:第一步,其保护羟基 呈磺酸酯官能团的形式; 第二步是使受保护的酚类化合物与亲电试剂反应; 任选地,第三步骤使羟基脱保护。