PROCESS FOR PRODUCING OPTICALLY ACTIVE 2-HYDROXYBUTYRIC ESTER
    8.
    发明公开
    PROCESS FOR PRODUCING OPTICALLY ACTIVE 2-HYDROXYBUTYRIC ESTER 有权
    VERFAHREN ZUR HERSTELLUNG OPTISCH AKTIVER 2-HYDROXYBUTTERSÄUREESTER

    公开(公告)号:EP1908747A1

    公开(公告)日:2008-04-09

    申请号:EP06781793.2

    申请日:2006-07-27

    摘要: To provide a process for producing an optically active 2-hydroxybutyric ester at high yield and high optical purity.
    The process for producing an optically active 2-hydroxybutyric ester (1), characterized in that the process includes reacting an optically active 2,3-epoxypropionic ester (2) with a methyl Grignard reagent CH 3 MgX (wherein X represents a halogen atom) in the presence of a copper catalyst in an amount of 0.05 to 0.5 mol with respect to 1 mol of (2) through the following scheme:

    (wherein R represents a C1 to C6 alkyl group or a C7 or C8 aralkyl group; X represents a halogen atom; and * represents S- or R-absolute configuration).

    摘要翻译: 提供以高产率和高光学纯度制备光学活性2-羟基丁酸酯的方法。 制备光学活性2-羟基丁酸酯(1)的方法,其特征在于该方法包括使光学活性2,3-环氧丙酸酯(2)与格氏试剂CH 3 MgX(其中X表示卤素原子) 在相对于1摩尔(2)的0.05摩尔的铜催化剂的存在下,通过以下方案:(其中R表示C1至C6烷基或C7或C8芳烷基; X表示 卤原子;和*表示S-或R-绝对构型)。