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    • 4. 发明申请
    • PROCESS FOR THE PREPARATION OF AN OPTICALLY ACTIVE ESTER
    • 制备光学活性酯的方法
    • WO2006105996A3
    • 2006-12-21
    • PCT/EP2006003479
    • 2006-04-06
    • DSM IP ASSETS BVHEISE ANDREASVERZIJL GERARDUS KAREL MARIARABANI GOUHERPALMANS ANJA RITA ALBERTAHILKER IRIS
    • HEISE ANDREASVERZIJL GERARDUS KAREL MARIARABANI GOUHERPALMANS ANJA RITA ALBERTAHILKER IRIS
    • C07B55/00C07C29/09C07C29/143C07C29/56C07C67/03C07C67/465C12P41/00
    • C08G63/16C07B2200/07C07C29/1285C07C29/143C07C67/03C08G63/82C12P7/625C12P41/004C07C69/007C07C69/28C07C33/26
    • The invention relates to a process for the preparation of an optically active compound from raw materials comprising a di-ester and a chiral hydroxy- compound according to formula (I), wherein: R 1 , R 2 , R 4 and R 5 each independently represent hydrogen or an alkyl group with 1-20 C-atoms, an alkenyl group with 2-20 C-atoms, an alkynyl group with 2-20 C- atoms, or an (hetero)aryl group with 4-20 C-atoms optionally containing one or more O, S or N atoms, R 3 represents an alkyl group with 1-20 C-atoms, an alkenyl group with 2-20 C- atoms, an alkynyl group with 2-20 C-atoms, or an (hetero)aryl group with 4-20 C- atoms optionally containing one or more O, S or N atoms, the compound according to formula (I) comprises at least one chiral centre that has an a-carbon relative to a secondary hydroxy group, comprising the steps of a) bringing the di-ester, optionally a solvent, and the chiral hydroxy-compound according to formula (I) together to form a reaction system; b) adding an asymmetric transesterification catalyst, a racemisation catalyst and optionally a racemisation catalyst re-activating compound to the reaction system; c) bringing the reaction system to conditions where racemisation and enantioselective transesterefication take place, whereby the optically active compound is formed, whereby steps a), b) and c) may be executed sequentially or simultaneously, and whereby the chiral hydroxy-compound according to formula (I) may in step a) be partially or wholly replaced by the combination of the corresponding ketone and a reducing agent.
    • 本发明涉及一种由包含二酯和式(I)的手性羟基化合物的原料制备光学活性化合物的方法,其中:R 1,R 2 R 2,R 4和R 5各自独立地表示氢或具有1-20个C原子的烷基,具有2-20C的链烯基 原子,具有2-20个C原子的炔基或具有任选含有一个或多个O,S或N原子的4-20个C原子的(杂)芳基,R 3表示 具有1-20个C原子的烷基,具有2-20个C原子的烯基,具有2-20个C原子的炔基或具有4-20个C-原子的(杂)芳基,任选地含有一个 或更多的O,S或N原子,根据式(I)的化合物包含相对于仲羟基具有a-碳的至少一个手性中心,包括以下步骤:a)将二酯,任选地 溶剂和根据式(I)的手性羟基化合物一起 形成反应体系; b)向反应体系中加入不对称酯交换催化剂,外消旋化催化剂和任选的外消旋催化剂再活化化合物; c)使反应体系进行发生外消旋化和对映选择性转移反应的条件,从而形成光学活性化合物,由此可以顺序或同时地进行步骤a),b)和c),由此根据 式(I)可以在步骤a)中被相应的酮和还原剂的组合部分或全部代替。