Racemization of optically active alkoxyamines
    1.
    发明授权
    Racemization of optically active alkoxyamines 失效
    光学活性烷氧基胺的外消旋化

    公开(公告)号:US06060624A

    公开(公告)日:2000-05-09

    申请号:US327656

    申请日:1999-06-08

    CPC分类号: C07C213/08 C07B2200/07

    摘要: A method for racemizing an enantiomer of an alkoxyamine represented by formula I ##STR1## in which R.sub.1 and R.sub.2 are the same or different C.sub.1 to C.sub.20 alkyl group. A feed containing an enantiomer of the alkoxyamine is passed over a nickel or cobalt catalyst in the presence of hydrogen and ammonia. The racemic mixture formed by this method contains substantially no by-products.

    摘要翻译: 由式I表示的烷氧基胺的对映异构体外消旋化的方法,其中R 1和R 2是相同或不同的C 1至C 20烷基。 含有烷氧基胺的对映体的进料在氢和氨的存在下通过镍或钴催化剂。 通过该方法形成的外消旋混合物基本上不含副产物。

    Aminopropylation of alcohols in the presence of amide or ether solvents
    3.
    发明授权
    Aminopropylation of alcohols in the presence of amide or ether solvents 失效
    在酰胺或醚溶剂存在下,醇的氨基丙基化

    公开(公告)号:US07399886B2

    公开(公告)日:2008-07-15

    申请号:US10655145

    申请日:2003-09-04

    IPC分类号: C07D209/30

    CPC分类号: C07C213/02 C07C217/08

    摘要: This invention relates to an improved hydrogenation process for the preparation of etheramines. In the process, cyanoethylated alcohols, i.e., the reaction product of an alcohol with (meth)acrylonitrile, are contacted with hydrogen in the presence of a sponge cobalt catalyst. The improvement in the process resides in effecting the hydrogenation process utilizing a cyanoethylated alcohol feedstock contaminated with byproduct acrylonitrile and utilizing a solvent that solubilizes byproduct (meth)acrylonitrile present in the feedstock. Specific classes of solvents employed are ethers and amides.

    摘要翻译: 本发明涉及一种用于制备醚胺的改进的氢化方法。 在此过程中,氰乙基化醇,即醇与(甲基)丙烯腈的反应产物在海绵钴催化剂存在下与氢接触。 该方法的改进在于利用被副产物丙烯腈污染的氰乙基化醇原料并利用溶解原料中存在的副产物(甲基)丙烯腈的溶剂来实现氢化过程。 使用的具体类别的溶剂是醚和酰胺。