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    • 3. 发明授权
    • Method for producing tetrahydropyran compound and intermediate thereof
    • 四氢吡喃化合物及其中间体的制备方法
    • US09018403B2
    • 2015-04-28
    • US14282584
    • 2014-05-20
    • Nissan Chemical Industries, Ltd.
    • Hirotaka KawanamiKana YamaguchiShota Murase
    • C07D317/00C07H9/04C07D317/72
    • C07H9/04C07D317/20C07D317/72C07D409/06C07D493/04
    • Disclosed is a method for producing a tetrahydropyran compound represented by general formula (5) shown in the scheme. Accordingly, a tetrahydropyran derivative is obtained in high yield and with high selectivity without using a highly toxic reagent, and an industrially useful method for producing a tetrahydropyran derivative and an intermediate thereof can be provided. In formulae (1) to (5), R1 and R2 each independently represent a hydrogen atom, a linear, branched, or cyclic alkyl group, or an aromatic group which may have a substituent, and R1 and R2 may be combined to form an alkylene group, thereby forming a ring; and R3 and R4 each independently represent a hydrogen atom or a linear, branched, or cyclic alkyl group, and R3 and R4 may be combined to form an alkylene group, thereby forming a ring.
    • 公开了一种制备方案中所示的由通式(5)表示的四氢吡喃化合物的方法。 因此,可以高收率,高选择性地得到四氢吡喃衍生物,而不使用高毒性试剂,可以提供工业上有用的四氢吡喃衍生物及其中间体的制造方法。 式(1)〜(5)中,R 1和R 2各自独立地表示氢原子,直链状,支链状或环状的烷基或可以具有取代基的芳香族基团,R1和R2可以组合形成 亚烷基,从而形成环; R 3和R 4各自独立地表示氢原子或直链状,支链状或环状的烷基,可以将R 3和R 4结合形成亚烷基,形成环。