VERFAHREN ZUR HERSTELLUNG VON TRIOXIMDERIVATEN

    公开(公告)号:EP1296939A1

    公开(公告)日:2003-04-02

    申请号:EP01947442.8

    申请日:2001-07-04

    摘要: The invention relates to a method for the production of trioxime derivatives of formula (I): where R?1 and R2¿ = independently, cyano, alkyl, haloalkyl or cycloalkyl and R?3 and R4¿ = independently, alkyl, haloalkyl, cycloalkyl, alkylcarbonyl or arylalkyl. Said method comprises the following reaction steps, without isolation of the intermediate products: A) nitrosation of 1,3 diketones of formula (II), to give monooximes of formula (III): B) oximation of (III) with hydroxylamine derivatives of formula (IV): H¿2N-OR?3', where R3' = H or R3 to give bisoximes of formula (V): C) alkylation of (V) with alkylating agents, or acylation of (V) with acylating agents to give compounds of formula (VI) and D) finally, oximation of (VI) with hydroxylamine to give compounds of formula (I).

    摘要翻译: 本发明涉及制备式(I)三肟衍生物的方法:其中R 1和R 2独立地为氰基,烷基,卤代烷基或环烷基,R 3和R 4独立地为烷基,卤代烷基,环烷基 ,烷基羰基或芳基烷基。 所述方法包括以下反应步骤,不分离中间产物:A)式(II)的1,3-二酮的亚硝化,得到式(III)的单肟:B)用式(III)的羟胺衍生物 (V)的烷基化(C):用烷基化剂将(V)烷基化或用酰化剂将(V)酰化成(IV):其中R3'= H或R3以生成式(V)的双肟: 最后给出式(VI)化合物和D),用羟胺肟化(VI)得到式(I)化合物。

    Improved beta-diketones for the extraction of copper from aqueous ammoniacal solutions
    8.
    发明公开
    Improved beta-diketones for the extraction of copper from aqueous ammoniacal solutions 失效
    Verbesserte Beta-Diketonefürdie Extraktion von Kupfer aus ammoniakalischenLösungen

    公开(公告)号:EP1170389A2

    公开(公告)日:2002-01-09

    申请号:EP01116257.5

    申请日:1997-01-30

    IPC分类号: C22B3/26 C22B15/00 C07C49/12

    摘要: A process for recovery of copper from an aqueous ammoniacal solution containing copper values comprising:

    (A) contacting a copper pregnant aqueous ammoniacal solution containing copper values with a water insoluble beta-diketone copper extractant dissolved in a water-immiscible organic solvent to extract copper values from said aqueous ammoniacal solution into said organic solution thereby forming a copper pregnant organic phase and a copper depleted aqueous phase;
    (B) separating said aqueous phase and said organic phase;
    (C) contacting the copper pregnant organic phase with an aqueous acidic stripping solution;
    (D) separating said aqueous acidic stripping solution now containing the copper values from the organic phase; and
    (E) recovering the copper from said aqueous acidic stripping solution; characterized in that the beta-diketone extractant being a highly sterically hindered beta-diketone selected from beta-diketones of formula II:
    where R is phenyl or alkyl substituted phenyl, R' is alkyl having from above 1 to 8 carbon atoms, and R", R"' and R"" are the same or different and are chosen from the group consisting of H, alkyl having from 1 to 8 carbon atoms, and aralkyl having from 7 to 14 carbon atoms, with the proviso that (a) less than two of R", R"' and R"" are H and (b) the total number of carbons in all R groups is at least 13.

    摘要翻译: 一种从含有铜含量的氨水溶液中回收铜的方法,包括:(A)将含铜铜的怀孕的含水氨水溶液与溶解在与水不混溶的有机溶剂中的水不溶性β-二酮铜提取剂接触以提取铜值 从所述氨水溶液中加入所述有机溶液,从而形成铜怀孕的有机相和贫铜的水相; (B)分离所述水相和所述有机相; (C)将铜怀孕的有机相与含水酸性剥离溶液接触; (D)从有机相中分离现在含有铜值的酸性水溶液; 和(E)从所述酸性酸性剥离溶液中回收铜; 其特征在于β-二酮萃取剂是高度位阻的β-二酮,其选自式II的β-二酮:其中R是苯基或烷基取代的苯基,R'是具有1-8个碳原子的烷基, 并且R“,R”'和R“”相同或不同,并且选自H,具有1至8个碳原子的烷基和具有7至14个碳原子的芳烷基,条件是( a)R“,R”'和R“”中的少于两个为H,(b)所有R基团中的碳总数至少为13。

    Procédé de préparation de composés alfa, bêta-dicarbonylés acycliques
    9.
    发明公开
    Procédé de préparation de composés alfa, bêta-dicarbonylés acycliques 有权
    Verfahren zum Herstellen von acyclischen alpha,beta-Dicarbonylverbindungen

    公开(公告)号:EP0926127A1

    公开(公告)日:1999-06-30

    申请号:EP98403160.9

    申请日:1998-12-15

    摘要: Procédé de préparation de composés α,β-dicarbonylés acycliques de formule (I)
    dans laquelle R 2 = alkyl, phényl ou benzyl pouvant être diversement substitué sur le cycle, ou ester carboxylique et R 3 = alkyl, ou alkoxy ou ester carboxylique dans lequel on fait réagir dans un solvant de type nitrile un composé de formule (II)
    dans laquelle R 1 = alkyl, ou α-cétocarboxylate d'alkyle ou ester carboxylique et R 2 et R 3 ont les mêmes significations que précédemment, avec de l'oxygène moléculaire en présence de nitrate de cuivre II ou de chlorure ferrique comme catalyseur et application à l'obtention de l'α-cétobutyrate d'éthyle, du phénylpyruvate d'éthyle, du pyruvate d'éthyle, du phénylglyoxylate d'éthyle, de la butane-2,3-dione ou du mésoxalate de diéthyle.

    摘要翻译: 在硝酸铜或氯化铁作为催化剂的存在下,在腈溶剂中,通过α,γ-二羰基化合物(II)与分子氧的反应来制备α,β-二羰基非环化合物(I)。 原料(II)和产物(I)具有下式:R1 = 1-6C烷基,3-6C烷基α-酮羧酸酯或2-5C羧酸酯; R2 = 1-6C烷基,可被环取代的苯基或苄基或2-5C羧酸酯; R3 = 1-4C烷基或烷氧基或2-5C羧酸酯。