Ester resolution process
    2.
    发明授权
    Ester resolution process 失效
    酯分解过程

    公开(公告)号:US4254279A

    公开(公告)日:1981-03-03

    申请号:US78412

    申请日:1979-09-24

    IPC分类号: C07C69/72

    CPC分类号: C07C67/313 C07B2200/07

    摘要: Optically active 1-Trichloromethyl-3-methyl-2-butenyl acetoacetate is prepared by resolving the racemic ester via a crystalline enamine derivative.

    摘要翻译: 通过结晶烯胺衍生物拆分外消旋酯制备光学活性的1-三氯甲基-3-甲基-2-丁烯基乙酰乙酸酯。

    Preparation of esters
    3.
    发明授权
    Preparation of esters 失效
    酯的制备

    公开(公告)号:US4299776A

    公开(公告)日:1981-11-10

    申请号:US162479

    申请日:1980-06-24

    CPC分类号: C07C255/00

    摘要: .alpha.-cyano esters are prepared by reacting an acyl halide with an aldehyde in a homogeneous mixture of substantially water-miscible aprotic solvent and an aqueous solution of water-soluble cyanide salt.

    摘要翻译: 通过酰基卤与醛在基本上可水混合的非质子溶剂和水溶性氰化物盐水溶液的均匀混合物中反应来制备α-氰基酯。