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    • 59. 发明公开
    • PROCESS FOR PREPARING 1,3-DIOXOLANE-4-METHANOL COMPOUNDS
    • VERFAHREN ZUR HERSTELLUNG VON 1,3-DIOXOLAN-4-METHANOL-VERBINDUNGEN
    • EP0926147A4
    • 2002-01-16
    • EP97939228
    • 1997-09-09
    • DAISO CO LTD
    • HINOUE KAZUMASAFURUKAWA YOSHIRO
    • C07D317/20C07D317/72
    • C07D317/20
    • A process for preparing 1,3-dioxolane-4-methanol compounds in a racemic modification form and an optically active form having a high purity in a high yield in a simple and cost-effective manner. The process comprises reacting a 3-halogeno-1,2-propanediol (1a) (wherein X represents a halogen atom) or a glycidol with an alcohol in the presence of a base, acetalating the resultant 3-alkoxy-1,2-propanediol in the presence of an acid catalyst, and further conducting hydrogenation in the presence of a reduction catalyst to prepare a 1,3-dioxolane-4-methanol compound (5) (wherein R?1 and R2¿ represent each hydrogen, an alkyl group having 1 to 4 carbon atoms, or a phenyl group, or R?1 and R2¿ together with the adjacent carbon atom may form a three- to six-membered ring).
    • 以简单和成本有效的方式以高产率制备外消旋改性形式的1,3-二氧戊环-4-甲醇化合物和高纯度光学活性形式的方法。 该方法包括使3-卤代-1,2-丙二醇(1a)(其中X代表卤原子)或缩水甘油与醇在碱存在下反应,将所得3-烷氧基-1,2-丙二醇 在酸催化剂存在下进一步在还原催化剂存在下进行氢化以制备1,3-二氧戊环-4-甲醇化合物(5)(其中R 1和R 2各自代表氢,烷基 具有1至4个碳原子或苯基,或R 1和R 2与相邻碳原子一起可形成三至六元环)。