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    • 53. 发明授权
    • Process for the preparation of para-nitroso-diphenylhydroxylamines
    • 对亚硝基二苯基羟胺的制备方法
    • US4129740A
    • 1978-12-12
    • US873327
    • 1978-01-30
    • Hans ZengelManfred Bergfeld
    • Hans ZengelManfred Bergfeld
    • C07B61/00B01J31/00B01J31/02C07C20060101C07C67/00C07C239/00C07C239/08C07C239/10C07C79/46C07C85/24C07C101/72
    • C07D211/46
    • An improved process for the preparation of para-nitroso-diphenylhydroxylamines is disclosed. One member of the group consisting of nitrosobenzene, ortho-substituted nitrosobenzenes, meta-substituted nitrosobenzenes, ortho-meta-disubstituted nitrosobenzenes and para-substituted nitrosobenzenes is reacted with one member selected from the group consisting of nitrosobenzene, ortho-substituted nitrosobenzenes, meta-substituted nitrosobenzenes, and ortho-meta-disubstituted nitrosobenzenes, in the presence of an acid catalyst. The improvement comprises utilizing as the acid catalyst an acid selected from the group consisting of aliphatic, cycloaliphatic, and aromatic sulfonic acids, having a pK.sub.a equal to or less than one, perchloric acid, and trifluoroacetic acid, in an amount equal to or greater than 0.5 mol of acid per mol of nitroso reactants, and performing the reaction at a temperature from about -20.degree. C to about 60.degree. C.
    • 公开了一种用于制备对 - 亚硝基 - 二苯基羟胺的改进方法。 由亚硝基苯,邻位取代的亚硝基苯,间位取代的亚硝基苯,邻 - 间二取代的亚硝基苯和对位取代的亚硝基苯组成的组中的一个成员与选自亚硝基苯,邻位取代的亚硝基苯, 取代的亚硝基苯和邻 - 间二取代的亚硝基苯,在酸催化剂的存在下。 该改进包括以等于或大于等于或等于3的量使用选自脂肪族,脂环族和芳族磺酸的酸,其中pKa等于或小于1的高氯酸和三氟乙酸作为酸催化剂 0.5摩尔酸/摩尔亚硝基反应物,并在约-20℃至约60℃的温度下进行反应。
    • 55. 发明专利
    • Platinum catalyst fixed on ion exchange resin
    • 铂离子固定在离子交换树脂上
    • JP2010214373A
    • 2010-09-30
    • JP2010115910
    • 2010-05-20
    • Wako Pure Chem Ind Ltd和光純薬工業株式会社
    • SATO MUTSUMIONO KEIJI
    • B01J31/08B01J23/42B01J31/10B01J31/30B01J31/40B01J37/16C07C239/08
    • B01J31/10B01J23/42B01J31/0238B01J31/0239B01J31/08B01J31/30B01J31/4038B01J2231/641B01J2531/828C07C239/08Y02P20/584
    • PROBLEM TO BE SOLVED: To provide a method for producing a hydroxylamine compound, characterized in that a nitro compound is contacted with a hydrogen source and optionally a catalyst poisoning agent in the presence of a platinum catalyst fixed on an ion-exchange resin. SOLUTION: The method, which uses a platinum catalyst fixed on an ion-exchange resin wherein a platinum metal is fixed on the matrix of an ion-exchange resin, allows the production of an objective hydroxylamine compound, with little formation of by-products, with good efficiency and with industrial safety. Further, the platinum catalyst fixed on an ion-exchange resin is less susceptible to the reduction of its activity even when repeatedly used for many times, since it has a platinum metal fixed on the matrix of an ion-exchange resin, and the catalyst has a very large particle size, which results in much easiness in its handling such as recovering and reuse. COPYRIGHT: (C)2010,JPO&INPIT
    • 待解决的问题:提供一种羟胺化合物的制造方法,其特征在于,在固定在离子交换树脂上的铂催化剂存在下,硝基化合物与氢源和任选的催化剂中和剂接触 。 解决方案:使用固定在离子交换树脂上的铂催化剂的方法,其中铂金属固定在离子交换树脂的基质上,允许生产目标羟胺化合物,几乎不形成 - 产品,效率高,工业安全。 此外,固定在离子交换树脂上的铂催化剂由于其具有固定在离子交换树脂的基质上的铂金属,因此即使重复使用多次也不易于降低其活性,并且催化剂具有 非常大的颗粒尺寸,这使得其处理容易得多,例如回收和再利用。 版权所有(C)2010,JPO&INPIT