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    Process for the production of 2-hydroxy-4-methythiobutyric acid ammonium salt
    34.
    发明授权
    Process for the production of 2-hydroxy-4-methythiobutyric acid ammonium salt 有权
    2-羟基-4-亚甲基丁酸铵盐的制备方法

    公开(公告)号：US07485748B2

    公开(公告)日：2009-02-03

    申请号：US10547280

    申请日：2004-03-26

    申请人： Horst Weigel ,  Christoph Weckbecker ,  Klaus Huthmacher

    发明人： Horst Weigel ,  Christoph Weckbecker ,  Klaus Huthmacher

    IPC分类号： C07C315/00

    CPC分类号： C07C319/20 ,  C07C323/60 ,  C07C323/52

    摘要： A process for preparing 2-hydroxy-4-methylthiobutyric acid ammonium salt involves reacting 3-methylthiopropionaldehyde with hydrogen cyanide to form 2-hydroxy-4-methylthiobutyronitrile, and subsequently hydrolyzing the 2-hydroxy-4-methylthiobutyronitrile by catalytic hydrolysis to form the ammonium salt of the 2-hydroxy-4-methylthiobutyric acid in a single process step. One catalyst may be used in the hydrolysis for the whole reaction. The catalyst is preferably a solid containing a titanium compound such as, e.g., titanium nitride, titanium sulfide or titanium dioxide. The 2-hydroxy-4-methylthiobutyric acid ammonium salt produced by this process is nutritional and can be used as an additive in feedstuffs.

    摘要翻译： 制备2-羟基-4-甲硫基丁酸铵盐的方法包括使3-甲硫基丙醛与氰化氢反应形成2-羟基-4-甲硫基丁腈，随后通过催化水解将2-羟基-4-甲硫基丁腈水解形成铵 2-羟基-4-甲硫基丁酸的盐在单一工艺步骤中。 在整个反应的水解中可以使用一种催化剂。 催化剂优选为含有钛化合物例如氮化钛，硫化钛或二氧化钛的固体。 通过该方法生产的2-羟基-4-甲硫基丁酸铵盐是营养的，可用作饲料中的添加剂。

    Method for producing 6,10 and 6,9-dimethyl-5,10-undecadienyl-2-ones
    40.
    发明授权
    Method for producing 6,10 and 6,9-dimethyl-5,10-undecadienyl-2-ones 失效
    制备6,10和6,9-二甲基-5,10-十一二烯基-2-酮的方法

    公开(公告)号：US06310259B1

    公开(公告)日：2001-10-30

    申请号：US09446734

    申请日：2000-03-23

    申请人： Wilhelm Keim ,  Armin Kraus ,  Rainer Hahn ,  Klaus Huthmacher

    发明人： Wilhelm Keim ,  Armin Kraus ,  Rainer Hahn ,  Klaus Huthmacher

    IPC分类号： C07C4500

    CPC分类号： C07C45/676 ,  C07C49/203 ,  C07C67/347 ,  C07C69/738

    摘要： The present application refers to a process for preparing 6,10- and 6,9-dimethyl-5,10-undecadienyl-2-ones by telomerizing isoprene with alkyl acetoacetates in the presence of a catalyst system containing a transition metal compound catalyst and a phosphorus- or arsenic-containing compound cocatalyst, wherein the process is performed in the presence of a protic additive of the general formula in which: R1, R2, R3 represent an alkyl group with 1 to 9 carbon atoms, branched or unbranched, a cycloalkyl group with 6 to 8 carbon atoms, an aryl group, in particular phenyl, or an arylalkyl group, X(−) represents an inorganic or organic anion, y is 1 or 2, and the &bgr;-ketoester so obtained is saponified and decarboxylated in a manner known per se.

    摘要翻译： 本申请是指通过在含有过渡金属化合物催化剂的催化剂体系存在下将异戊二烯与乙酰乙酸烷基酯聚合来制备6,10-和6,9-二甲基-5,10-十一二烯基-2-酮的方法， 含磷或砷的化合物助催化剂，其中该方法在一般形式的质子添加剂存在下进行：其中R1，R2，R3代表具有1至9个碳原子的烷基，支链或非支链，环烷基 具有6至8个碳原子，芳基，特别是苯基或芳基烷基，X（ - ）表示无机或有机阴离子，y为1或2，所得到的β-酮酯被皂化并脱羧 本身已知的方式。