A PROCESS FOR PREPARING (R)-4-CYANO-3-HYDROXYBUTYRIC ACID ESTER
    7.
    发明申请
    A PROCESS FOR PREPARING (R)-4-CYANO-3-HYDROXYBUTYRIC ACID ESTER 审中-公开
    制备(R)-4-氰基-3-羟基丁酸酯的方法

    公开(公告)号:WO00046186A1

    公开(公告)日:2000-08-10

    申请号:PCT/KR2000/000052

    申请日:2000-01-24

    摘要: The present invention relates to a process for preparing (R)-4-cyano-3-hydroxybutyric acid ester derivatives and more particularly, to a process for preparing optically pure (R)-4-cyano-3-hydroxybutyric acid ester derivatives expressed by formula (1) in high yield by performing cyanation and sequential esterification of (S)-3,4-epoxybutyric acid salt as a starting material. In said formula, R represents linear or branched alkyl group with 1 SIMILAR 5 carbon atoms or benzyl group.

    摘要翻译: 本发明涉及一种制备(R)-4-氰基-3-羟基丁酸酯衍生物的方法,更具体地说,涉及一种制备光学纯的(R)-4-氰基-3-羟基丁酸酯衍生物的方法,由 通过(S)-3,4-环氧丁酸盐作为起始原料进行氰化和连续酯化,高产率的式(1)。 在所述式中,R表示具有1〜5个碳原子的直链或支链烷基或苄基。

    PROCESS FOR PRODUCING 6-CYANOMETHYL-1,3-DIOXANE-4-ACETIC ACID DERIVATIVES
    8.
    发明申请
    PROCESS FOR PRODUCING 6-CYANOMETHYL-1,3-DIOXANE-4-ACETIC ACID DERIVATIVES 审中-公开
    生产6-氰基-1,3-二氧戊环-4-乙酸衍生物的方法

    公开(公告)号:WO99057109A1

    公开(公告)日:1999-11-11

    申请号:PCT/JP1999/002272

    申请日:1999-04-28

    摘要: A process whereby 6-cyanomethyl-1,3-dioxane-4-acetic acid derivatives, which are important intermediates of an HMG coenzyme A reductase atorvastatin, can be industrially, easily and efficiently produced. This process comprises starting with a 3,5-dihydroxy-6-halohexane derivative, treating it with a cyaniding agent to thereby substitute the halogen atom with the cyano group (i.e., a cyanation reaction) and forming an acetal of a diol by using an acetal-forming agent in the presence of an acid catalyst (i.e., an acetal-formation reaction).

    摘要翻译: 作为HMG辅酶A还原酶阿托伐他汀的重要中间体的6-氰甲基-1,3-二恶烷-4-乙酸衍生物的方法可以在工业上容易且有效地制备。 该方法包括由3,5-二羟基-6-卤代己烷衍生物开始,用氰化物处理,由此用氰基代替卤素原子(即,氰化反应)并通过使用二羧酸形成二醇的缩醛 在酸催化剂(即,缩醛形成反应)的存在下的缩醛形成剂。

    INTERMEDIATES FOR THE PREPARATION OF POLY(CYANOACRYLATES) AND APPLICATIONS OF THE POLY(CYANOACRYLATES) SO PREPARED
    10.
    发明申请
    INTERMEDIATES FOR THE PREPARATION OF POLY(CYANOACRYLATES) AND APPLICATIONS OF THE POLY(CYANOACRYLATES) SO PREPARED 审中-公开
    制备聚(氰基丙烯酸酯)的中间体和制备的聚(氰基丙烯酸酯)的应用

    公开(公告)号:WO1995026371A1

    公开(公告)日:1995-10-05

    申请号:PCT/IE1994000018

    申请日:1994-03-28

    发明人: PATRIQUE LIMITED

    IPC分类号: C08F22/32

    摘要: A process is provided for the reversible coupling of weak nucleophiles to the carbon-carbon double bond of 2-cyanoacrylic acid or an ester thereof so as to reversibly protect the bond. Examples of weak nucleophiles include alcohols (including diols and polyols), phenols, sulfur nucleophiles such as thiols and thio acids, phosphorus nucleophiles such as dialkyl or diarylphosphites and phosphines, and carbon nucleophiles such as active methylene compounds. The process involves reacting 2-cyanoacrylic acid or an ester thereof with the weak nucleophile in the presence of an inert solvent under polymerisation inhibiting conditions and in the presence of an acidic catalyst. The compounds produced can be used as intermediates for the preparation of poly(cyanoacrylates), following elimination of the nucleophile added to give a 2-cyanoacrylate monomer which then polymerizes. The poly(cyanoacrylates) thereby produced have many applications, for example, in the preparation of films such as single- or multi-layer Langmuir-Blodgett films.

    摘要翻译: 提供了用于弱亲核试剂与2-氰基丙烯酸或其酯的碳 - 碳双键的可逆偶联的方法,以便可逆地保护该键。 弱亲核试剂的实例包括醇(包括二醇和多元醇),酚,硫亲核试剂如硫醇和硫代酸,磷亲核试剂如二烷基或二芳基亚磷酸酯和膦,以及碳亲核试剂如活性亚甲基化合物。 该方法包括在惰性溶剂存在下,在聚合抑制条件下和在酸性催化剂存在下,将2-氰基丙烯酸或其酯与弱亲核试剂反应。 所产生的化合物可以用作制备聚(氰基丙烯酸酯)的中间体,除去加入的亲核试剂后,得到聚合的2-氰基丙烯酸酯单体。 由此制备的聚(氰基丙烯酸酯)具有许多应用,例如在诸如单层或多层Langmuir-Blodgett膜的膜的制备中。