Method for producing orthocarboxylic acid trialkyl esters
    6.
    发明授权
    Method for producing orthocarboxylic acid trialkyl esters 失效
    生产原酸三烷基酯的方法

    公开(公告)号:US07201835B2

    公开(公告)日:2007-04-10

    申请号:US10489257

    申请日:2002-09-05

    IPC分类号: C25B3/00

    CPC分类号: C25B3/02

    摘要: A process for the preparation of orthoesters of the general formula I, where the radicals have the following meaning R1: hydrogen, C1- to C20-alkyl, C2- to C20-alkenyl, C2- to C20-alkynyl, C3- to C12-cycloalkyl, C4- to C20-cycloalkylalkyl or C4- to C10-aryl R2, R3: C1- to C20-alkyl, C3- to C12-cycloalkyl, and C4- to C20-cycloalkylalkyl or R2 and R3 together form C2- to C10-alkylene R4: C1- to C4-alkyl, by electrochemically oxidizing a compound of the general formula II in which the radicals R1 to R3 have the same meaning as in the general formula I and R5 is a saturated or unsaturated 5- or 6-membered heterocycloalkyl radical or heterocycloaryl radical having up to 2 heteroatoms selected from the group consisting of N, O and S, where this radical is bonded to the remaining part of the molecule via a carbon atom which is situated in the adjacent position to a heteroatom, in the presence of C1- to C4-alcohols (alcohols A).

    摘要翻译: 一种制备通式I的原酸酯的方法,