Oxidation of alcohols mediated by nitroxyl derivatives
    71.
    发明公开
    Oxidation of alcohols mediated by nitroxyl derivatives 有权
    Durch硝基衍生Vermittelte氧化冯Alkoholen

    公开(公告)号:EP1086938A2

    公开(公告)日:2001-03-28

    申请号:EP00111244.0

    申请日:2000-05-25

    摘要: The invention is directed to a process of the oxidation of alcohols with the aid of a nitroxyl radical of the general formula (I)
    wherein R 1 , R 2 , R 3 , R 4 , R 5 , R 6 are independent of each other (C 1 -C 8 )-alkyl, (C 1 -C 8 )-alkoxy, (C 6 -C 18 )-aryl, (C 7 -C 19 )-aralkyl, (C 6 -C 18 )-aryl-(C 1 -C 8 )-alkyl, (C 3 -C 18 )-heteroaryl, (C 4 -C 19 )-heteroaralkyl, (C 3 -C 18 )-heteroaryl-(C 1 -C 8 )-alkyl, (C 3 -C 8 )-cycloalkyl, (C 3 -C 8 )-cycloalkyl-(C 1 -C 8 )-alkyl, (C 1 -C 8 )-alkyl-(C 3 -C 8 )-cycloalkyl,
    or R 5 and R 6 are bonded together via a (C 1 -C 3 )-alkyl chain, which can be substituted by one or more R 1 , N[(C 1 -C 8 )-alkyl] 2 , (C 1 -C 8 )-amido, (C 1 -C 8 )-alkyloxy carboxyl, (C 6 -C 18 )-aryloxy carboxyl, nitrile, Hal, =O, part of a polymer, and a co-oxidant. Primary alcohols are oxidised preferably compared to secondary ones.

    摘要翻译: 本发明涉及一种借助于通式(I)的酰氧基氧化醇的方法,其中R 1,R 2,R 3,R 4, (C 1 -C 8)烷基,(C 1 -C 8) - 烷氧基,(C 6 -C 18) - 芳基,(C 7 -C 19) - 芳烷基,(C 6 -C 18) (C 1 -C 8) - 杂芳基,(C 3 -C 18) - 杂芳基,(C 3 -C 18) - 杂芳基 - (C 1 -C 8) - 烷基,(C 3 -C 8) 环烷基,(C 3 -C 8) - 环烷基 - (C 1 -C 8) - 烷基,(C 1 -C 8) - 烷基 - (C 3 -C 8) - 环烷基或R 5和R 6通过( 可以被一个或多个R 1,C 1 -C 8烷基,(C 1 -C 8) - 酰氨基,(C 1 -C 8) - 烷氧基羧基,(C 6 -C 8) C18) - 芳氧基羧基,腈,Hal,= O,聚合物的一部分和共氧化剂。 伯醇优选与二级醇进行氧化。

    VERFAHREN ZUR HERSTELLUNG VON 1-FLUOR-GLYCORONSÄUREN UND DEREN SALZEN SOWIE SOLCHE NEUEN 1-FLUOR-GLYCURONSÄUREN UND DEREN SALZE
    78.
    发明授权
    VERFAHREN ZUR HERSTELLUNG VON 1-FLUOR-GLYCORONSÄUREN UND DEREN SALZEN SOWIE SOLCHE NEUEN 1-FLUOR-GLYCURONSÄUREN UND DEREN SALZE 失效
    用于生产1- FLUOR-GLYCORONSÄUREN及其盐,以及这些新的1-FLUOR-GLYCURONSÄUREN及其盐。

    公开(公告)号:EP0472556B1

    公开(公告)日:1994-11-02

    申请号:EP90906997.3

    申请日:1990-05-11

    IPC分类号: C07H7/033 C07H13/04

    摘要: A process for producing 1-fluoro-glycuronic acids which may contain protected amino groups and their salts, in which glycopyranosylfluorides of mono or oligo-saccharides with at least one primary OH function are oxidised in aqueous solution in the pH region of 6 to 9, using oxygen as the oxidising agent, in the presence of a catalyst containing at least one metal of the platinum group, the resultant 1-fluoro-glycuronic acids are at least partially neutralised. The invention also relates to compounds of general formula (I), in which M is hydrogen or a cation, especially an alkaline metal, X is oxygen or NH, mutually independently, where with X = oxygen, R is hydrogen or a glycosidically bonded monosaccharide and where with X = NH, R is an acyl, alkyl, aryl or aralkyl protective group radical with up to 10 C atoms, but where only one of the RX groups stands for anything other than OH.