Preparation of n-phenylbenzoquinone-imine and converting same into
p-phenylenediamines
    2.
    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
    6.
    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。

    Selective chlorination of phenols
    8.
    发明授权
    Selective chlorination of phenols 失效
    苯酚的选择性氯化

    公开(公告)号:US4876396A

    公开(公告)日:1989-10-24

    申请号:US078771

    申请日:1987-07-28

    IPC分类号: C07C37/62 C07C39/32

    CPC分类号: C07C37/62

    摘要: Phenolic compounds and mixtures thereof, e.g., admixture of 2,4-dichlorophenol and 2,6-dichlorophenol, are selectively chlorinated at a position ortho to a hydroxyl function thereof, by reacting such phenolic compound with gaseous chlorine, in a molten reaction medium, in the presence of a catalytically effective amount of a primary, secondary or tertiary amine.

    摘要翻译: 酚醛化合物及其混合物,例如2,4-二氯苯酚和2,6-二氯苯酚的混合物,通过使这种酚类化合物与气态氯在熔融反应介质中反应,在其羟基官能团的邻位置选择性氯化, 在催化有效量的伯,仲或叔胺的存在下。

    Process for the preparation of secondary of tertiary dialkyl dicarbonate
    9.
    发明授权
    Process for the preparation of secondary of tertiary dialkyl dicarbonate 失效
    制备二硫酸二辛酯二次酸的方法

    公开(公告)号:US5206407A

    公开(公告)日:1993-04-27

    申请号:US594155

    申请日:1990-10-09

    IPC分类号: C07C68/06

    CPC分类号: C07C68/06

    摘要: A process for the preparation of a secondary or tertiary dialkyl dicarbonate. An alkali metal salt of an alkyl pyrocarbonate is contacted with (CO).sub.n X.sub.2 wherein X is defined as a leaving group and n is an integer from 1 to 2, in the presence of a complexing agent.

    摘要翻译: 一种二碳酸二烷基酯或二烷基二碳酸二烷基酯的制备方法。 使碳酸烷基酯的碱金属盐与络合剂存在下与(CO)n X 2接触,其中X定义为离去基团,n为1至2的整数。