Process for the production of aromatic halogen-amino compounds
    1.
    发明授权
    Process for the production of aromatic halogen-amino compounds 有权
    制备芳香族卤素 - 氨基化合物的方法

    公开(公告)号:US06197716B1

    公开(公告)日:2001-03-06

    申请号:US09185851

    申请日:1998-11-04

    IPC分类号: B01J3100

    CPC分类号: C07D213/73 C07C209/365

    摘要: The present invention relates to a hydrogenation process for the production of aromatic halogen-amino compounds by means of catalytic hydrogenation on noble metal catalysts of corresponding aromatic halonitro compounds, characterised in that a rhodium, ruthenium, iridium, platinum or palladium catalyst which is modified with an inorganic or organic phosphorus compound with a degree of oxidation of less than V, is used, in the presence of a vanadium compound.

    摘要翻译: 本发明涉及通过在相应的芳族卤代硝酸化合物的贵金属催化剂上通过催化氢化生产芳族卤代 - 氨基化合物的氢化方法,其特征在于将铑,钌,铱,铂或钯催化剂改性为 在钒化合物的存在下,使用氧化度小于V的无机或有机磷化合物。

    Process for the preparation of substituted aromatic amino compounds
    3.
    发明授权
    Process for the preparation of substituted aromatic amino compounds 有权
    取代芳香族氨基化合物的制备方法

    公开(公告)号:US06258982B1

    公开(公告)日:2001-07-10

    申请号:US09254586

    申请日:1999-03-10

    IPC分类号: C07C23300

    摘要: The present invention relates to a hydrogenation process for the preparation of aromatic amino compounds containing directly on the aryl ring or in a side chain one or more entities that may also undergo hydrogenation, such as carbon multiple bonds, nitrile groups, imino groups or carbonyl groups. The preparation is carried out by catalytic hydrogenation of the corresponding aromatic nitro compounds in the presence of a phosphorus-modified noble metal catalyst. The invention relates also to the use of modified noble metal catalysts for the hydrogenation of aromatic nitro compounds containing carbon multiple bonds and/or substituted by nitrile, imino or carbonyl groups.

    摘要翻译: 本发明涉及一种用于制备直接在芳环或侧链上的芳族氨基化合物的氢化方法,一个或多个也可能进行氢化的实体,如碳多重键,腈基,亚氨基或羰基 。 在磷改性贵金属催化剂存在下,通过相应的芳族硝基化合物的催化氢化进行制备。 本发明还涉及改性贵金属催化剂用于氢化包含碳多重键和/或被腈,亚氨基或羰基取代的芳族硝基化合物的用途。

    Process for the catalytic hydrogeneration of aromatic nitro compounds
    5.
    发明授权
    Process for the catalytic hydrogeneration of aromatic nitro compounds 失效
    芳香族硝基化合物的催化加氢方法

    公开(公告)号:US6096924A

    公开(公告)日:2000-08-01

    申请号:US952459

    申请日:1997-11-13

    摘要: One object of the invention is a process for the catalytic hydrogenation of aromatic nitro compounds in solution or in melt in the presence of hydrogen and at least one noble metal catalyst, nickel catalyst or cobalt catalyst, in which process a catalytic amount of at least one vanadium compound is present, wherein the vanadium has the oxidation state 0, II, IV or V. It has been found that in the catalytic hydrogenation of aromatic nitro compounds the accumulation of hydroxylamines can be almost completely prevented by the addition of catalytic amounts of vanadium compounds, which usually results in concentrations of

    摘要翻译: PCT No.PCT / EP96 / 01889第 371日期:1997年11月13日 102(e)日期1997年11月13日PCT提交1996年5月7日PCT公布。 第WO96 / 36597号公报 日期1996年11月21日本发明的一个目的是在氢气和至少一种贵金属催化剂,镍催化剂或钴催化剂存在下,溶液或熔体中芳族硝基化合物的催化氢化的方法,其中催化 存在至少一种钒化合物的量,其中钒具有0,II,IV或V的氧化态。已经发现,在芳族硝基化合物的催化氢化中,通过加入可以几乎完全防止羟胺的积聚 的催化量的钒化合物,其通常导致<1%羟胺的浓度。 所得到的氢化产物比没有添加钒化合物的氢化产物更纯(更纯),因为几乎没有偶氮或偶氮氧化合物得到。 氢化,特别是最后阶段比没有加入更快地进行。 因此,获得了质量稳定性和经济性方面的显着优点。

    Production of optically active &agr;-hydroxyacetals
    6.
    发明授权
    Production of optically active &agr;-hydroxyacetals 失效
    生产光学活性α-羟基缩醛

    公开(公告)号:US06660890B1

    公开(公告)日:2003-12-09

    申请号:US10018365

    申请日:2001-12-19

    申请人: Martin Studer

    发明人: Martin Studer

    IPC分类号: C07C4330

    摘要: A process for the heterogeneous and enantioselective hydrogenation of prochiral organic &agr;-keto compounds with platinum as the catalyst in the presence of a soluble or immobilized chiral aromatic nitrogen base with at least one basic nitrogen atom adjacent to stereogenic carbon atoms, whereby prochiral &agr;-ketoacetals are hydrogenated to optically active &agr;-hydroxyacetals.

    摘要翻译: 在具有与立体碳原子相邻的至少一个碱性氮原子的可溶性或固定的手性芳族氮碱的存在下,铂作为催化剂的前手性有机α-酮化合物的异构和对映选择性氢化的方法,其中前手性α-酮缩醛 被氢化成光学活性的α-羟基缩醛。